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How to use createStub method in sinon

Best JavaScript code snippet using sinon

stub-test.js

Source:stub-test.js

...11var fail = referee.fail;12var Promise = require("native-promise-only"); // eslint-disable-line no-unused-vars13describe("stub", function () {14    beforeEach(function () {15        createStub(deprecated, "printWarning");16    });17    afterEach(function () {18        if (deprecated.printWarning.restore) {19            deprecated.printWarning.restore();20        }21    });22    it("is spy", function () {23        var stub = createStub.create();24        assert.isFalse(stub.called);25        assert.isFunction(stub.calledWith);26        assert.isFunction(stub.calledOn);27    });28    it("fails if stubbing property on null", function () {29        assert.exception(30            function () {31                createStub(null, "prop");32            },33            {34                message: "Trying to stub property 'prop' of null"35            }36        );37    });38    it("fails if called with an empty property descriptor", function () {39        var propertyKey = "ea762c6d-16ab-4ded-8bc2-3bc6f2de2925";40        var object = {};41        object[propertyKey] = "257b38d8-3c02-4353-82ab-b1b588be6990";42        assert.exception(43            function () {44                createStub(object, propertyKey, {});45            },46            {47                message: "Expected property descriptor to have at least one key"48            }49        );50    });51    it("throws a readable error if stubbing Symbol on null", function () {52        if (typeof Symbol === "function") {53            assert.exception(54                function () {55                    createStub(null, Symbol());56                },57                {58                    message: "Trying to stub property 'Symbol()' of null"59                }60            );61        }62    });63    it("should contain asynchronous versions of callsArg*, and yields* methods", function () {64        var stub = createStub.create();65        var syncVersions = 0;66        var asyncVersions = 0;67        for (var method in stub) {68            if (stub.hasOwnProperty(method) && method.match(/^(callsArg|yields)/)) {69                if (!method.match(/Async/)) {70                    syncVersions++;71                } else if (method.match(/Async/)) {72                    asyncVersions++;73                }74            }75        }76        assert.same(syncVersions, asyncVersions,77            "Stub prototype should contain same amount of synchronous and asynchronous methods");78    });79    it("should allow overriding async behavior with sync behavior", function () {80        var stub = createStub();81        var callback = createSpy();82        stub.callsArgAsync(1);83        stub.callsArg(1);84        stub(1, callback);85        assert(callback.called);86    });87    it("should works with combination of withArgs arguments", function () {88        var stub = createStub();89        stub.returns(0);90        stub.withArgs(1, 1).returns(2);91        stub.withArgs(1).returns(1);92        assert.equals(stub(), 0);93        assert.equals(stub(1), 1);94        assert.equals(stub(1, 1), 2);95        assert.equals(stub(1, 1, 1), 2);96        assert.equals(stub(2), 0);97    });98    it("should work with combination of withArgs arguments", function () {99        var stub = createStub();100        stub.withArgs(1).returns(42);101        stub(1);102        refute.isNull(stub.withArgs(1).firstCall);103    });104    describe(".returns", function () {105        it("returns specified value", function () {106            var stub = createStub.create();107            var object = {};108            stub.returns(object);109            assert.same(stub(), object);110        });111        it("returns should return stub", function () {112            var stub = createStub.create();113            assert.same(stub.returns(""), stub);114        });115        it("returns undefined", function () {116            var stub = createStub.create();117            refute.defined(stub());118        });119        it("supersedes previous throws", function () {120            var stub = createStub.create();121            stub.throws().returns(1);122            refute.exception(function () {123                stub();124            });125        });126    });127    describe(".resolves", function () {128        afterEach(function () {129            if (Promise.resolve.restore) {130                Promise.resolve.restore();131            }132        });133        it("returns a promise to the specified value", function () {134            var stub = createStub.create();135            var object = {};136            stub.resolves(object);137            return stub().then(function (actual) {138                assert.same(actual, object);139            });140        });141        it("should return the same stub", function () {142            var stub = createStub.create();143            assert.same(stub.resolves(""), stub);144        });145        it("supersedes previous throws", function () {146            var stub = createStub.create();147            stub.throws().resolves(1);148            refute.exception(function () {149                stub();150            });151        });152        it("supersedes previous rejects", function () {153            var stub = createStub.create();154            stub.rejects(Error("should be superseeded")).resolves(1);155            return stub().then();156        });157        it("can be superseded by returns", function () {158            var stub = createStub.create();159            stub.resolves(2).returns(1);160            assert.equals(stub(), 1);161        });162        it("does not invoke Promise.resolve when the behavior is added to the stub", function () {163            var resolveSpy = createSpy(Promise, "resolve");164            var stub = createStub.create();165            stub.resolves(2);166            assert.equals(resolveSpy.callCount, 0);167        });168    });169    describe(".rejects", function () {170        afterEach(function () {171            if (Promise.reject.restore) {172                Promise.reject.restore();173            }174        });175        it("returns a promise which rejects for the specified reason", function () {176            var stub = createStub.create();177            var reason = new Error();178            stub.rejects(reason);179            return stub().then(function () {180                referee.fail("this should not resolve");181            }).catch(function (actual) {182                assert.same(actual, reason);183            });184        });185        it("should return the same stub", function () {186            var stub = createStub.create();187            assert.same(stub.rejects({}), stub);188        });189        it("specifies exception message", function () {190            var stub = createStub.create();191            var message = "Oh no!";192            stub.rejects("Error", message);193            return stub().then(function () {194                referee.fail("Expected stub to reject");195            }).catch(function (reason) {196                assert.equals(reason.message, message);197            });198        });199        it("does not specify exception message if not provided", function () {200            var stub = createStub.create();201            stub.rejects("Error");202            return stub().then(function () {203                referee.fail("Expected stub to reject");204            }).catch(function (reason) {205                assert.equals(reason.message, "");206            });207        });208        it("rejects for a generic reason", function () {209            var stub = createStub.create();210            stub.rejects();211            return stub().then(function () {212                referee.fail("Expected stub to reject");213            }).catch(function (reason) {214                assert.equals(reason.name, "Error");215            });216        });217        it("can be superseded by returns", function () {218            var stub = createStub.create();219            stub.rejects(2).returns(1);220            assert.equals(stub(), 1);221        });222        it("does not invoke Promise.reject when the behavior is added to the stub", function () {223            var rejectSpy = createSpy(Promise, "reject");224            var stub = createStub.create();225            stub.rejects(2);226            assert.equals(rejectSpy.callCount, 0);227        });228    });229    describe(".returnsArg", function () {230        it("returns argument at specified index", function () {231            var stub = createStub.create();232            stub.returnsArg(0);233            var object = {};234            assert.same(stub(object), object);235        });236        it("returns stub", function () {237            var stub = createStub.create();238            assert.same(stub.returnsArg(0), stub);239        });240        it("throws if no index is specified", function () {241            var stub = createStub.create();242            assert.exception(function () {243                stub.returnsArg();244            }, "TypeError");245        });246    });247    describe(".throwsArg", function () {248        it("throws argument at specified index", function () {249            var stub = createStub.create();250            stub.throwsArg(0);251            var expectedError = new Error("The expected error message");252            assert.exception(function () {253                stub(expectedError);254            }, function (err) {255                return err.message === expectedError.message;256            });257        });258        it("returns stub", function () {259            var stub = createStub.create();260            assert.same(stub.throwsArg(0), stub);261        });262        it("throws TypeError if no index is specified", function () {263            var stub = createStub.create();264            assert.exception(function () {265                stub.throwsArg();266            }, "TypeError");267        });268        it("should throw without enough arguments", function () {269            var stub = createStub.create();270            stub.throwsArg(3);271            assert.exception(272                function () {273                    stub("only", "two arguments");274                },275                function (error) {276                    return error instanceof TypeError277                        && error.message ===278                        "throwArgs failed: 3 arguments required but only 2 present"279                    ;280                }281            );282        });283        it("should work with call-based behavior", function () {284            var stub = createStub.create();285            var expectedError = new Error("catpants");286            stub.returns(1);287            stub.onSecondCall().throwsArg(1);288            refute.exception(function () {289                assert.equals(1, stub(null, expectedError));290            });291            assert.exception(292                function () {293                    stub(null, expectedError);294                },295                function (error) {296                    return error.message === expectedError.message;297                }298            );299        });300        it("should be reset by .resetBeahvior", function () {301            var stub = createStub.create();302            stub.throwsArg(0);303            stub.resetBehavior();304            refute.exception(function () {305                stub(new Error("catpants"));306            });307        });308    });309    describe(".returnsThis", function () {310        it("stub returns this", function () {311            var instance = {};312            instance.stub = createStub.create();313            instance.stub.returnsThis();314            assert.same(instance.stub(), instance);315        });316        var strictMode = (function () {317            return this;318        }()) === undefined;319        if (strictMode) {320            it("stub returns undefined when detached", function () {321                var stub = createStub.create();322                stub.returnsThis();323                // Due to strict mode, would be `global` otherwise324                assert.same(stub(), undefined);325            });326        }327        it("stub respects call/apply", function () {328            var stub = createStub.create();329            stub.returnsThis();330            var object = {};331            assert.same(stub.call(object), object);332            assert.same(stub.apply(object), object);333        });334        it("returns stub", function () {335            var stub = createStub.create();336            assert.same(stub.returnsThis(), stub);337        });338    });339    describe(".usingPromise", function () {340        it("should exist and be a function", function () {341            var stub = createStub.create();342            assert(stub.usingPromise);343            assert.isFunction(stub.usingPromise);344        });345        it("should return the current stub", function () {346            var stub = createStub.create();347            assert.same(stub.usingPromise(Promise), stub);348        });349        it("should set the promise used by resolve", function () {350            var stub = createStub.create();351            var promise = {352                resolve: createStub.create().callsFake(function (value) {353                    return Promise.resolve(value);354                })355            };356            var object = {};357            stub.usingPromise(promise).resolves(object);358            return stub().then(function (actual) {359                assert.same(actual, object, "Same object resolved");360                assert.isTrue(promise.resolve.calledOnce, "Custom promise resolve called once");361                assert.isTrue(promise.resolve.calledWith(object), "Custom promise resolve called once with expected");362            });363        });364        it("should set the promise used by reject", function () {365            var stub = createStub.create();366            var promise = {367                reject: createStub.create().callsFake(function (err) {368                    return Promise.reject(err);369                })370            };371            var reason = new Error();372            stub.usingPromise(promise).rejects(reason);373            return stub().then(function () {374                referee.fail("this should not resolve");375            }).catch(function (actual) {376                assert.same(actual, reason, "Same object resolved");377                assert.isTrue(promise.reject.calledOnce, "Custom promise reject called once");378                assert.isTrue(promise.reject.calledWith(reason), "Custom promise reject called once with expected");379            });380        });381    });382    describe(".throws", function () {383        it("throws specified exception", function () {384            var stub = createStub.create();385            var error = new Error();386            stub.throws(error);387            assert.exception(stub, error);388        });389        it("returns stub", function () {390            var stub = createStub.create();391            assert.same(stub.throws({}), stub);392        });393        it("sets type of exception to throw", function () {394            var stub = createStub.create();395            var exceptionType = "TypeError";396            stub.throws(exceptionType);397            assert.exception(function () {398                stub();399            }, exceptionType);400        });401        it("specifies exception message", function () {402            var stub = createStub.create();403            var message = "Oh no!";404            stub.throws("Error", message);405            assert.exception(stub, {406                message: message407            });408        });409        it("does not specify exception message if not provided", function () {410            var stub = createStub.create();411            stub.throws("Error");412            assert.exception(stub, {413                message: ""414            });415        });416        it("throws generic error", function () {417            var stub = createStub.create();418            stub.throws();419            assert.exception(stub, "Error");420        });421        it("resets 'invoking' flag", function () {422            var stub = createStub.create();423            stub.throws();424            assert.exception(stub);425            refute.defined(stub.invoking);426        });427    });428    describe(".callsArg", function () {429        beforeEach(function () {430            this.stub = createStub.create();431        });432        it("calls argument at specified index", function () {433            this.stub.callsArg(2);434            var callback = createStub.create();435            this.stub(1, 2, callback);436            assert(callback.called);437        });438        it("returns stub", function () {439            assert.isFunction(this.stub.callsArg(2));440        });441        it("throws if argument at specified index is not callable", function () {442            this.stub.callsArg(0);443            assert.exception(function () {444                this.stub(1);445            }, "TypeError");446        });447        it("throws if no index is specified", function () {448            var stub = this.stub;449            assert.exception(function () {450                stub.callsArg();451            }, "TypeError");452        });453        it("throws if index is not number", function () {454            var stub = this.stub;455            assert.exception(function () {456                stub.callsArg({});457            }, "TypeError");458        });459    });460    describe(".callsArgWith", function () {461        beforeEach(function () {462            this.stub = createStub.create();463        });464        it("calls argument at specified index with provided args", function () {465            var object = {};466            this.stub.callsArgWith(1, object);467            var callback = createStub.create();468            this.stub(1, callback);469            assert(callback.calledWith(object));470        });471        it("returns function", function () {472            var stub = this.stub.callsArgWith(2, 3);473            assert.isFunction(stub);474        });475        it("calls callback without args", function () {476            this.stub.callsArgWith(1);477            var callback = createStub.create();478            this.stub(1, callback);479            assert(callback.calledWith());480        });481        it("calls callback with multiple args", function () {482            var object = {};483            var array = [];484            this.stub.callsArgWith(1, object, array);485            var callback = createStub.create();486            this.stub(1, callback);487            assert(callback.calledWith(object, array));488        });489        it("throws if no index is specified", function () {490            var stub = this.stub;491            assert.exception(function () {492                stub.callsArgWith();493            }, "TypeError");494        });495        it("throws if index is not number", function () {496            var stub = this.stub;497            assert.exception(function () {498                stub.callsArgWith({});499            }, "TypeError");500        });501    });502    describe(".callsArgOn", function () {503        beforeEach(function () {504            this.stub = createStub.create();505            this.fakeContext = {506                foo: "bar"507            };508        });509        it("calls argument at specified index", function () {510            this.stub.callsArgOn(2, this.fakeContext);511            var callback = createStub.create();512            this.stub(1, 2, callback);513            assert(callback.called);514            assert(callback.calledOn(this.fakeContext));515        });516        it("calls argument at specified index with undefined context", function () {517            this.stub.callsArgOn(2, undefined);518            var callback = createStub.create();519            this.stub(1, 2, callback);520            assert(callback.called);521            assert(callback.calledOn(undefined));522        });523        it("calls argument at specified index with number context", function () {524            this.stub.callsArgOn(2, 5);525            var callback = createStub.create();526            this.stub(1, 2, callback);527            assert(callback.called);528            assert(callback.calledOn(5));529        });530        it("returns stub", function () {531            var stub = this.stub.callsArgOn(2, this.fakeContext);532            assert.isFunction(stub);533        });534        it("throws if argument at specified index is not callable", function () {535            this.stub.callsArgOn(0, this.fakeContext);536            assert.exception(function () {537                this.stub(1);538            }, "TypeError");539        });540        it("throws if no index is specified", function () {541            var stub = this.stub;542            assert.exception(function () {543                stub.callsArgOn();544            }, "TypeError");545        });546        it("throws if index is not number", function () {547            var stub = this.stub;548            assert.exception(function () {549                stub.callsArgOn(this.fakeContext, 2);550            }, "TypeError");551        });552    });553    describe(".callsArgOnWith", function () {554        beforeEach(function () {555            this.stub = createStub.create();556            this.fakeContext = { foo: "bar" };557        });558        it("calls argument at specified index with provided args", function () {559            var object = {};560            this.stub.callsArgOnWith(1, this.fakeContext, object);561            var callback = createStub.create();562            this.stub(1, callback);563            assert(callback.calledWith(object));564            assert(callback.calledOn(this.fakeContext));565        });566        it("calls argument at specified index with provided args and undefined context", function () {567            var object = {};568            this.stub.callsArgOnWith(1, undefined, object);569            var callback = createStub.create();570            this.stub(1, callback);571            assert(callback.calledWith(object));572            assert(callback.calledOn(undefined));573        });574        it("calls argument at specified index with provided args and number context", function () {575            var object = {};576            this.stub.callsArgOnWith(1, 5, object);577            var callback = createStub.create();578            this.stub(1, callback);579            assert(callback.calledWith(object));580            assert(callback.calledOn(5));581        });582        it("calls argument at specified index with provided args with undefined context", function () {583            var object = {};584            this.stub.callsArgOnWith(1, undefined, object);585            var callback = createStub.create();586            this.stub(1, callback);587            assert(callback.calledWith(object));588            assert(callback.calledOn(undefined));589        });590        it("calls argument at specified index with provided args with number context", function () {591            var object = {};592            this.stub.callsArgOnWith(1, 5, object);593            var callback = createStub.create();594            this.stub(1, callback);595            assert(callback.calledWith(object));596            assert(callback.calledOn(5));597        });598        it("returns function", function () {599            var stub = this.stub.callsArgOnWith(2, this.fakeContext, 3);600            assert.isFunction(stub);601        });602        it("calls callback without args", function () {603            this.stub.callsArgOnWith(1, this.fakeContext);604            var callback = createStub.create();605            this.stub(1, callback);606            assert(callback.calledWith());607            assert(callback.calledOn(this.fakeContext));608        });609        it("calls callback with multiple args", function () {610            var object = {};611            var array = [];612            this.stub.callsArgOnWith(1, this.fakeContext, object, array);613            var callback = createStub.create();614            this.stub(1, callback);615            assert(callback.calledWith(object, array));616            assert(callback.calledOn(this.fakeContext));617        });618        it("throws if no index is specified", function () {619            var stub = this.stub;620            assert.exception(function () {621                stub.callsArgOnWith();622            }, "TypeError");623        });624        it("throws if index is not number", function () {625            var stub = this.stub;626            assert.exception(function () {627                stub.callsArgOnWith({});628            }, "TypeError");629        });630    });631    describe(".callsFake", function () {632        beforeEach(function () {633            this.method = function () { throw new Error("Should be stubbed"); };634            this.object = {method: this.method};635        });636        it("uses provided function as stub", function () {637            var fakeFn = createStub.create();638            this.stub = createStub(this.object, "method");639            this.stub.callsFake(fakeFn);640            this.object.method(1, 2);641            assert(fakeFn.calledWith(1, 2));642            assert(fakeFn.calledOn(this.object));643        });644        it("is overwritten by subsequent stub behavior", function () {645            var fakeFn = createStub.create();646            this.stub = createStub(this.object, "method");647            this.stub.callsFake(fakeFn).returns(3);648            var returned = this.object.method(1, 2);649            refute(fakeFn.called);650            assert(returned === 3);651        });652    });653    describe(".objectMethod", function () {654        beforeEach(function () {655            this.method = function () {};656            this.object = { method: this.method };657        });658        afterEach(function () {659            if (global.console.info.restore) {660                global.console.info.restore();661            }662        });663        it("warns provided function as stub, recommending callsFake instead", function () {664            deprecated.printWarning.restore();665            var called = false;666            var infoStub = createStub(console, "info");667            var stub = createStub(this.object, "method", function () {668                called = true;669            });670            stub();671            assert(called);672            assert(infoStub.called);673        });674        it("throws if third argument is provided but not a proprety descriptor", function () {675            var object = this.object;676            assert.exception(function () {677                createStub(object, "method", 1);678            }, "TypeError");679        });680        it("stubbed method should be proper stub", function () {681            var stub = createStub(this.object, "method");682            assert.isFunction(stub.returns);683            assert.isFunction(stub.throws);684        });685        it("stub should be spy", function () {686            var stub = createStub(this.object, "method");687            this.object.method();688            assert(stub.called);689            assert(stub.calledOn(this.object));690        });691        it("stub should affect spy", function () {692            var stub = createStub(this.object, "method");693            stub.throws("TypeError");694            assert.exception(this.object.method);695            assert(stub.threw("TypeError"));696        });697        it("returns standalone stub without arguments", function () {698            var stub = createStub();699            assert.isFunction(stub);700            assert.isFalse(stub.called);701        });702        it("successfully stubs falsey properties", function () {703            var obj = { 0: function () { } };704            createStub(obj, 0).callsFake(function () {705                return "stubbed value";706            });707            assert.equals(obj[0](), "stubbed value");708        });709        it("does not stub function object", function () {710            assert.exception(function () {711                createStub(function () {});712            });713        });714    });715    describe("everything", function () {716        it("stubs all methods of object without property", function () {717            var obj = {718                func1: function () {},719                func2: function () {},720                func3: function () {}721            };722            createStub(obj);723            assert.isFunction(obj.func1.restore);724            assert.isFunction(obj.func2.restore);725            assert.isFunction(obj.func3.restore);726        });727        it("stubs prototype methods", function () {728            function Obj() {}729            Obj.prototype.func1 = function () {};730            var obj = new Obj();731            createStub(obj);732            assert.isFunction(obj.func1.restore);733        });734        it("returns object", function () {735            var object = {};736            assert.same(createStub(object), object);737        });738        it("only stubs functions", function () {739            var object = { foo: "bar" };740            createStub(object);741            assert.equals(object.foo, "bar");742        });743        it("handles non-enumerable properties", function () {744            var obj = {745                func1: function () {},746                func2: function () {}747            };748            Object.defineProperty(obj, "func3", {749                value: function () {},750                writable: true,751                configurable: true752            });753            createStub(obj);754            assert.isFunction(obj.func1.restore);755            assert.isFunction(obj.func2.restore);756            assert.isFunction(obj.func3.restore);757        });758        it("handles non-enumerable properties on prototypes", function () {759            function Obj() {}760            Object.defineProperty(Obj.prototype, "func1", {761                value: function () {},762                writable: true,763                configurable: true764            });765            var obj = new Obj();766            createStub(obj);767            assert.isFunction(obj.func1.restore);768        });769        it("does not stub non-enumerable properties from Object.prototype", function () {770            var obj = {};771            createStub(obj);772            refute.isFunction(obj.toString.restore);773            refute.isFunction(obj.toLocaleString.restore);774            refute.isFunction(obj.propertyIsEnumerable.restore);775        });776        it("does not fail on overrides", function () {777            var parent = {778                func: function () {}779            };780            var child = Object.create(parent);781            child.func = function () {};782            refute.exception(function () {783                createStub(child);784            });785        });786        it("does not call getter during restore", function () {787            var obj = {788                get prop() {789                    fail("should not call getter");790                }791            };792            var stub = createStub(obj, "prop", {get: function () {793                return 43;794            }});795            assert.equals(obj.prop, 43);796            stub.restore();797        });798    });799    describe("stubbed function", function () {800        it("has toString method", function () {801            var obj = { meth: function () {} };802            createStub(obj, "meth");803            assert.equals(obj.meth.toString(), "meth");804        });805        it("toString should say 'stub' when unable to infer name", function () {806            var stub = createStub();807            assert.equals(stub.toString(), "stub");808        });809        it("toString should prefer property name if possible", function () {810            var obj = {};811            obj.meth = createStub();812            obj.meth();813            assert.equals(obj.meth.toString(), "meth");814        });815    });816    describe(".yields", function () {817        it("invokes only argument as callback", function () {818            var stub = createStub().yields();819            var spy = createSpy();820            stub(spy);821            assert(spy.calledOnce);822            assert.equals(spy.args[0].length, 0);823        });824        it("throws understandable error if no callback is passed", function () {825            var stub = createStub().yields();826            assert.exception(stub, {827                message: "stub expected to yield, but no callback was passed."828            });829        });830        it("includes stub name and actual arguments in error", function () {831            var myObj = { somethingAwesome: function () {} };832            var stub = createStub(myObj, "somethingAwesome").yields();833            assert.exception(834                function () {835                    stub(23, 42);836                },837                {838                    message: "somethingAwesome expected to yield, but no callback " +839                            "was passed. Received [23, 42]"840                }841            );842        });843        it("invokes last argument as callback", function () {844            var stub = createStub().yields();845            var spy = createSpy();846            stub(24, {}, spy);847            assert(spy.calledOnce);848            assert.equals(spy.args[0].length, 0);849        });850        it("invokes first of two callbacks", function () {851            var stub = createStub().yields();852            var spy = createSpy();853            var spy2 = createSpy();854            stub(24, {}, spy, spy2);855            assert(spy.calledOnce);856            assert(!spy2.called);857        });858        it("invokes callback with arguments", function () {859            var obj = { id: 42 };860            var stub = createStub().yields(obj, "Crazy");861            var spy = createSpy();862            stub(spy);863            assert(spy.calledWith(obj, "Crazy"));864        });865        it("throws if callback throws", function () {866            var obj = { id: 42 };867            var stub = createStub().yields(obj, "Crazy");868            var callback = createStub().throws();869            assert.exception(function () {870                stub(callback);871            });872        });873        it("plays nice with throws", function () {874            var stub = createStub().throws().yields();875            var spy = createSpy();876            assert.exception(function () {877                stub(spy);878            });879            assert(spy.calledOnce);880        });881        it("plays nice with returns", function () {882            var obj = {};883            var stub = createStub().returns(obj).yields();884            var spy = createSpy();885            assert.same(stub(spy), obj);886            assert(spy.calledOnce);887        });888        it("plays nice with returnsArg", function () {889            var stub = createStub().returnsArg(0).yields();890            var spy = createSpy();891            assert.same(stub(spy), spy);892            assert(spy.calledOnce);893        });894        it("plays nice with returnsThis", function () {895            var obj = {};896            var stub = createStub().returnsThis().yields();897            var spy = createSpy();898            assert.same(stub.call(obj, spy), obj);899            assert(spy.calledOnce);900        });901    });902    describe(".yieldsRight", function () {903        it("invokes only argument as callback", function () {904            var stub = createStub().yieldsRight();905            var spy = createSpy();906            stub(spy);907            assert(spy.calledOnce);908            assert.equals(spy.args[0].length, 0);909        });910        it("throws understandable error if no callback is passed", function () {911            var stub = createStub().yieldsRight();912            assert.exception(stub, {913                message: "stub expected to yield, but no callback was passed."914            });915        });916        it("includes stub name and actual arguments in error", function () {917            var myObj = { somethingAwesome: function () {} };918            var stub = createStub(myObj, "somethingAwesome").yieldsRight();919            assert.exception(920                function () {921                    stub(23, 42);922                },923                {924                    message: "somethingAwesome expected to yield, but no callback " +925                             "was passed. Received [23, 42]"926                }927            );928        });929        it("invokes last argument as callback", function () {930            var stub = createStub().yieldsRight();931            var spy = createSpy();932            stub(24, {}, spy);933            assert(spy.calledOnce);934            assert.equals(spy.args[0].length, 0);935        });936        it("invokes the last of two callbacks", function () {937            var stub = createStub().yieldsRight();938            var spy = createSpy();939            var spy2 = createSpy();940            stub(24, {}, spy, spy2);941            assert(!spy.called);942            assert(spy2.calledOnce);943        });944        it("invokes callback with arguments", function () {945            var obj = { id: 42 };946            var stub = createStub().yieldsRight(obj, "Crazy");947            var spy = createSpy();948            stub(spy);949            assert(spy.calledWith(obj, "Crazy"));950        });951        it("throws if callback throws", function () {952            var obj = { id: 42 };953            var stub = createStub().yieldsRight(obj, "Crazy");954            var callback = createStub().throws();955            assert.exception(function () {956                stub(callback);957            });958        });959        it("plays nice with throws", function () {960            var stub = createStub().throws().yieldsRight();961            var spy = createSpy();962            assert.exception(function () {963                stub(spy);964            });965            assert(spy.calledOnce);966        });967        it("plays nice with returns", function () {968            var obj = {};969            var stub = createStub().returns(obj).yieldsRight();970            var spy = createSpy();971            assert.same(stub(spy), obj);972            assert(spy.calledOnce);973        });974        it("plays nice with returnsArg", function () {975            var stub = createStub().returnsArg(0).yieldsRight();976            var spy = createSpy();977            assert.same(stub(spy), spy);978            assert(spy.calledOnce);979        });980        it("plays nice with returnsThis", function () {981            var obj = {};982            var stub = createStub().returnsThis().yieldsRight();983            var spy = createSpy();984            assert.same(stub.call(obj, spy), obj);985            assert(spy.calledOnce);986        });987    });988    describe(".yieldsOn", function () {989        beforeEach(function () {990            this.stub = createStub.create();991            this.fakeContext = { foo: "bar" };992        });993        it("invokes only argument as callback", function () {994            var spy = createSpy();995            this.stub.yieldsOn(this.fakeContext);996            this.stub(spy);997            assert(spy.calledOnce);998            assert(spy.calledOn(this.fakeContext));999            assert.equals(spy.args[0].length, 0);1000        });1001        it("throws if no context is specified", function () {1002            assert.exception(function () {1003                this.stub.yieldsOn();1004            }, "TypeError");1005        });1006        it("throws understandable error if no callback is passed", function () {1007            this.stub.yieldsOn(this.fakeContext);1008            assert.exception(this.stub, {1009                message: "stub expected to yield, but no callback was passed."1010            });1011        });1012        it("includes stub name and actual arguments in error", function () {1013            var myObj = { somethingAwesome: function () {} };1014            var stub = createStub(myObj, "somethingAwesome").yieldsOn(this.fakeContext);1015            assert.exception(1016                function () {1017                    stub(23, 42);1018                },1019                {1020                    message: "somethingAwesome expected to yield, but no callback " +1021                             "was passed. Received [23, 42]"1022                }1023            );1024        });1025        it("invokes last argument as callback", function () {1026            var spy = createSpy();1027            this.stub.yieldsOn(this.fakeContext);1028            this.stub(24, {}, spy);1029            assert(spy.calledOnce);1030            assert(spy.calledOn(this.fakeContext));1031            assert.equals(spy.args[0].length, 0);1032        });1033        it("invokes first of two callbacks", function () {1034            var spy = createSpy();1035            var spy2 = createSpy();1036            this.stub.yieldsOn(this.fakeContext);1037            this.stub(24, {}, spy, spy2);1038            assert(spy.calledOnce);1039            assert(spy.calledOn(this.fakeContext));1040            assert(!spy2.called);1041        });1042        it("invokes callback with arguments", function () {1043            var obj = { id: 42 };1044            var spy = createSpy();1045            this.stub.yieldsOn(this.fakeContext, obj, "Crazy");1046            this.stub(spy);1047            assert(spy.calledWith(obj, "Crazy"));1048            assert(spy.calledOn(this.fakeContext));1049        });1050        it("throws if callback throws", function () {1051            var obj = { id: 42 };1052            var callback = createStub().throws();1053            this.stub.yieldsOn(this.fakeContext, obj, "Crazy");1054            assert.exception(function () {1055                this.stub(callback);1056            });1057        });1058    });1059    describe(".yieldsTo", function () {1060        it("yields to property of object argument", function () {1061            var stub = createStub().yieldsTo("success");1062            var callback = createSpy();1063            stub({ success: callback });1064            assert(callback.calledOnce);1065            assert.equals(callback.args[0].length, 0);1066        });1067        it("throws understandable error if no object with callback is passed", function () {1068            var stub = createStub().yieldsTo("success");1069            assert.exception(stub, {1070                message: "stub expected to yield to 'success', but no object " +1071                         "with such a property was passed."1072            });1073        });1074        it("throws understandable error if failing to yield callback by symbol", function () {1075            if (typeof Symbol === "function") {1076                var symbol = Symbol();1077                var stub = createStub().yieldsTo(symbol);1078                assert.exception(stub, {1079                    message: "stub expected to yield to 'Symbol()', but no object with " +1080                             "such a property was passed."1081                });1082            }1083        });1084        it("includes stub name and actual arguments in error", function () {1085            var myObj = { somethingAwesome: function () {} };1086            var stub = createStub(myObj, "somethingAwesome").yieldsTo("success");1087            assert.exception(1088                function () {1089                    stub(23, 42);1090                },1091                {1092                    message: "somethingAwesome expected to yield to 'success', but " +1093                             "no object with such a property was passed. " +1094                             "Received [23, 42]"1095                }1096            );1097        });1098        it("invokes property on last argument as callback", function () {1099            var stub = createStub().yieldsTo("success");1100            var callback = createSpy();1101            stub(24, {}, { success: callback });1102            assert(callback.calledOnce);1103            assert.equals(callback.args[0].length, 0);1104        });1105        it("invokes first of two possible callbacks", function () {1106            var stub = createStub().yieldsTo("error");1107            var callback = createSpy();1108            var callback2 = createSpy();1109            stub(24, {}, { error: callback }, { error: callback2 });1110            assert(callback.calledOnce);1111            assert(!callback2.called);1112        });1113        it("invokes callback with arguments", function () {1114            var obj = { id: 42 };1115            var stub = createStub().yieldsTo("success", obj, "Crazy");1116            var callback = createSpy();1117            stub({ success: callback });1118            assert(callback.calledWith(obj, "Crazy"));1119        });1120        it("throws if callback throws", function () {1121            var obj = { id: 42 };1122            var stub = createStub().yieldsTo("error", obj, "Crazy");1123            var callback = createStub().throws();1124            assert.exception(function () {1125                stub({ error: callback });1126            });1127        });1128    });1129    describe(".yieldsToOn", function () {1130        beforeEach(function () {1131            this.stub = createStub.create();1132            this.fakeContext = { foo: "bar" };1133        });1134        it("yields to property of object argument", function () {1135            this.stub.yieldsToOn("success", this.fakeContext);1136            var callback = createSpy();1137            this.stub({ success: callback });1138            assert(callback.calledOnce);1139            assert(callback.calledOn(this.fakeContext));1140            assert.equals(callback.args[0].length, 0);1141        });1142        it("yields to property of object argument with undefined context", function () {1143            this.stub.yieldsToOn("success", undefined);1144            var callback = createSpy();1145            this.stub({ success: callback });1146            assert(callback.calledOnce);1147            assert(callback.calledOn(undefined));1148            assert.equals(callback.args[0].length, 0);1149        });1150        it("yields to property of object argument with number context", function () {1151            this.stub.yieldsToOn("success", 5);1152            var callback = createSpy();1153            this.stub({ success: callback });1154            assert(callback.calledOnce);1155            assert(callback.calledOn(5));1156            assert.equals(callback.args[0].length, 0);1157        });1158        it("throws understandable error if no object with callback is passed", function () {1159            this.stub.yieldsToOn("success", this.fakeContext);1160            assert.exception(this.stub, {1161                message: "stub expected to yield to 'success', but no object " +1162                         "with such a property was passed."1163            });1164        });1165        it("includes stub name and actual arguments in error", function () {1166            var myObj = { somethingAwesome: function () {} };1167            var stub = createStub(myObj, "somethingAwesome").yieldsToOn("success", this.fakeContext);1168            assert.exception(1169                function () {1170                    stub(23, 42);1171                },1172                {1173                    message: "somethingAwesome expected to yield to 'success', but " +1174                             "no object with such a property was passed. " +1175                             "Received [23, 42]"1176                }1177            );1178        });1179        it("invokes property on last argument as callback", function () {1180            var callback = createSpy();1181            this.stub.yieldsToOn("success", this.fakeContext);1182            this.stub(24, {}, { success: callback });1183            assert(callback.calledOnce);1184            assert(callback.calledOn(this.fakeContext));1185            assert.equals(callback.args[0].length, 0);1186        });1187        it("invokes first of two possible callbacks", function () {1188            var callback = createSpy();1189            var callback2 = createSpy();1190            this.stub.yieldsToOn("error", this.fakeContext);1191            this.stub(24, {}, { error: callback }, { error: callback2 });1192            assert(callback.calledOnce);1193            assert(callback.calledOn(this.fakeContext));1194            assert(!callback2.called);1195        });1196        it("invokes callback with arguments", function () {1197            var obj = { id: 42 };1198            var callback = createSpy();1199            this.stub.yieldsToOn("success", this.fakeContext, obj, "Crazy");1200            this.stub({ success: callback });1201            assert(callback.calledOn(this.fakeContext));1202            assert(callback.calledWith(obj, "Crazy"));1203        });1204        it("throws if callback throws", function () {1205            var obj = { id: 42 };1206            var callback = createStub().throws();1207            this.stub.yieldsToOn("error", this.fakeContext, obj, "Crazy");1208            assert.exception(function () {1209                this.stub({ error: callback });1210            });1211        });1212    });1213    describe(".withArgs", function () {1214        it("defines withArgs method", function () {1215            var stub = createStub();1216            assert.isFunction(stub.withArgs);1217        });1218        it("creates filtered stub", function () {1219            var stub = createStub();1220            var other = stub.withArgs(23);1221            refute.same(other, stub);1222            assert.isFunction(stub.returns);1223            assert.isFunction(other.returns);1224        });1225        it("filters return values based on arguments", function () {1226            var stub = createStub().returns(23);1227            stub.withArgs(42).returns(99);1228            assert.equals(stub(), 23);1229            assert.equals(stub(42), 99);1230        });1231        it("filters exceptions based on arguments", function () {1232            var stub = createStub().returns(23);1233            stub.withArgs(42).throws();1234            refute.exception(stub);1235            assert.exception(function () {1236                stub(42);1237            });1238        });1239        it("ensure stub recognizes sinonMatch fuzzy arguments", function () {1240            var stub = createStub().returns(23);1241            stub.withArgs(sinonMatch({ foo: "bar" })).returns(99);1242            assert.equals(stub(), 23);1243            assert.equals(stub({ foo: "bar", bar: "foo" }), 99);1244        });1245        it("ensure stub uses last matching arguments", function () {1246            var unmatchedValue = "d3ada6a0-8dac-4136-956d-033b5f23eadf";1247            var firstMatchedValue = "68128619-a639-4b32-a4a0-6519165bf301";1248            var secondMatchedValue = "4ac2dc8f-3f3f-4648-9838-a2825fd94c9a";1249            var expectedArgument = "3e1ed1ec-c377-4432-a33e-3c937f1406d1";1250            var stub = createStub().returns(unmatchedValue);1251            stub.withArgs(expectedArgument).returns(firstMatchedValue);1252            stub.withArgs(expectedArgument).returns(secondMatchedValue);1253            assert.equals(stub(), unmatchedValue);1254            assert.equals(stub(expectedArgument), secondMatchedValue);1255        });1256        it("ensure stub uses last matching sinonMatch arguments", function () {1257            var unmatchedValue = "0aa66a7d-3c50-49ef-8365-bdcab637b2dd";1258            var firstMatchedValue = "1ab2c601-7602-4658-9377-3346f6814caa";1259            var secondMatchedValue = "e2e31518-c4c4-4012-a61f-31942f603ffa";1260            var expectedArgument = "90dc4a22-ef53-4c62-8e05-4cf4b4bf42fa";1261            var stub = createStub().returns(unmatchedValue);1262            stub.withArgs(expectedArgument).returns(firstMatchedValue);1263            stub.withArgs(sinonMatch(expectedArgument)).returns(secondMatchedValue);1264            assert.equals(stub(), unmatchedValue);1265            assert.equals(stub(expectedArgument), secondMatchedValue);1266        });1267    });1268    describe(".callsArgAsync", function () {1269        beforeEach(function () {1270            this.stub = createStub.create();1271        });1272        it("asynchronously calls argument at specified index", function (done) {1273            this.stub.callsArgAsync(2);1274            var callback = createSpy(done);1275            this.stub(1, 2, callback);1276            assert(!callback.called);1277        });1278    });1279    describe(".callsArgWithAsync", function () {1280        beforeEach(function () {1281            this.stub = createStub.create();1282        });1283        it("asynchronously calls callback at specified index with multiple args", function (done) {1284            var object = {};1285            var array = [];1286            this.stub.callsArgWithAsync(1, object, array);1287            var callback = createSpy(function () {1288                assert(callback.calledWith(object, array));1289                done();1290            });1291            this.stub(1, callback);1292            assert(!callback.called);1293        });1294    });1295    describe(".callsArgOnAsync", function () {1296        beforeEach(function () {1297            this.stub = createStub.create();1298            this.fakeContext = {1299                foo: "bar"1300            };1301        });1302        it("asynchronously calls argument at specified index with specified context", function (done) {1303            var context = this.fakeContext;1304            this.stub.callsArgOnAsync(2, context);1305            var callback = createSpy(function () {1306                assert(callback.calledOn(context));1307                done();1308            });1309            this.stub(1, 2, callback);1310            assert(!callback.called);1311        });1312    });1313    describe(".callsArgOnWithAsync", function () {1314        beforeEach(function () {1315            this.stub = createStub.create();1316            this.fakeContext = { foo: "bar" };1317        });1318        it("asynchronously calls argument at specified index with provided context and args", function (done) {1319            var object = {};1320            var context = this.fakeContext;1321            this.stub.callsArgOnWithAsync(1, context, object);1322            var callback = createSpy(function () {1323                assert(callback.calledOn(context));1324                assert(callback.calledWith(object));1325                done();1326            });1327            this.stub(1, callback);1328            assert(!callback.called);1329        });1330    });1331    describe(".yieldsAsync", function () {1332        it("asynchronously invokes only argument as callback", function (done) {1333            var stub = createStub().yieldsAsync();1334            var spy = createSpy(done);1335            stub(spy);1336            assert(!spy.called);1337        });1338    });1339    describe(".yieldsOnAsync", function () {1340        beforeEach(function () {1341            this.stub = createStub.create();1342            this.fakeContext = { foo: "bar" };1343        });1344        it("asynchronously invokes only argument as callback with given context", function (done) {1345            var context = this.fakeContext;1346            this.stub.yieldsOnAsync(context);1347            var spy = createSpy(function () {1348                assert(spy.calledOnce);1349                assert(spy.calledOn(context));1350                assert.equals(spy.args[0].length, 0);1351                done();1352            });1353            this.stub(spy);1354            assert(!spy.called);1355        });1356    });1357    describe(".yieldsToAsync", function () {1358        it("asynchronously yields to property of object argument", function (done) {1359            var stub = createStub().yieldsToAsync("success");1360            var callback = createSpy(function () {1361                assert(callback.calledOnce);1362                assert.equals(callback.args[0].length, 0);1363                done();1364            });1365            stub({ success: callback });1366            assert(!callback.called);1367        });1368    });1369    describe(".yieldsToOnAsync", function () {1370        beforeEach(function () {1371            this.stub = createStub.create();1372            this.fakeContext = { foo: "bar" };1373        });1374        it("asynchronously yields to property of object argument with given context", function (done) {1375            var context = this.fakeContext;1376            this.stub.yieldsToOnAsync("success", context);1377            var callback = createSpy(function () {1378                assert(callback.calledOnce);1379                assert(callback.calledOn(context));1380                assert.equals(callback.args[0].length, 0);1381                done();1382            });1383            this.stub({ success: callback });1384            assert(!callback.called);1385        });1386    });1387    describe(".onCall", function () {1388        it("can be used with returns to produce sequence", function () {1389            var stub = createStub().returns(3);1390            stub.onFirstCall().returns(1)1391                .onCall(2).returns(2);1392            assert.same(stub(), 1);1393            assert.same(stub(), 3);1394            assert.same(stub(), 2);1395            assert.same(stub(), 3);1396        });1397        it("can be used with returnsArg to produce sequence", function () {1398            var stub = createStub().returns("default");1399            stub.onSecondCall().returnsArg(0);1400            assert.same(stub(1), "default");1401            assert.same(stub(2), 2);1402            assert.same(stub(3), "default");1403        });1404        it("can be used with returnsThis to produce sequence", function () {1405            var instance = {};1406            instance.stub = createStub().returns("default");1407            instance.stub.onSecondCall().returnsThis();1408            assert.same(instance.stub(), "default");1409            assert.same(instance.stub(), instance);1410            assert.same(instance.stub(), "default");1411        });1412        it("can be used with throwsException to produce sequence", function () {1413            var stub = createStub();1414            var error = new Error();1415            stub.onSecondCall().throwsException(error);1416            stub();1417            assert.exception(stub, function (e) {1418                return e === error;1419            });1420        });1421        it("supports chained declaration of behavior", function () {1422            var stub = createStub()1423                    .onCall(0).returns(1)1424                    .onCall(1).returns(2)1425                    .onCall(2).returns(3);1426            assert.same(stub(), 1);1427            assert.same(stub(), 2);1428            assert.same(stub(), 3);1429        });1430        describe("in combination with withArgs", function () {1431            it("can produce a sequence for a fake", function () {1432                var stub = createStub().returns(0);1433                stub.withArgs(5).returns(-1)1434                    .onFirstCall().returns(1)1435                    .onSecondCall().returns(2);1436                assert.same(stub(0), 0);1437                assert.same(stub(5), 1);1438                assert.same(stub(0), 0);1439                assert.same(stub(5), 2);1440                assert.same(stub(5), -1);1441            });1442            it("falls back to stub default behaviour if fake does not have its own default behaviour", function () {1443                var stub = createStub().returns(0);1444                stub.withArgs(5)1445                    .onFirstCall().returns(1);1446                assert.same(stub(5), 1);1447                assert.same(stub(5), 0);1448            });1449            it("falls back to stub behaviour for call if fake does not have its own behaviour for call", function () {1450                var stub = createStub().returns(0);1451                stub.withArgs(5).onFirstCall().returns(1);1452                stub.onSecondCall().returns(2);1453                assert.same(stub(5), 1);1454                assert.same(stub(5), 2);1455                assert.same(stub(4), 0);1456            });1457            it("defaults to undefined behaviour once no more calls have been defined", function () {1458                var stub = createStub();1459                stub.withArgs(5).onFirstCall().returns(1)1460                    .onSecondCall().returns(2);1461                assert.same(stub(5), 1);1462                assert.same(stub(5), 2);1463                refute.defined(stub(5));1464            });1465            it("does not create undefined behaviour just by calling onCall", function () {1466                var stub = createStub().returns(2);1467                stub.onFirstCall();1468                assert.same(stub(6), 2);1469            });1470            it("works with fakes and reset", function () {1471                var stub = createStub();1472                stub.withArgs(5).onFirstCall().returns(1);1473                stub.withArgs(5).onSecondCall().returns(2);1474                assert.same(stub(5), 1);1475                assert.same(stub(5), 2);1476                refute.defined(stub(5));1477                stub.reset();1478                assert.same(stub(5), undefined);1479                assert.same(stub(5), undefined);1480                refute.defined(stub(5));1481            });1482            it("throws an understandable error when trying to use withArgs on behavior", function () {1483                assert.exception(1484                    function () {1485                        createStub().onFirstCall().withArgs(1);1486                    },1487                    {1488                        message: /not supported/1489                    }1490                );1491            });1492        });1493        it("can be used with yields* to produce a sequence", function () {1494            var context = { foo: "bar" };1495            var obj = { method1: createSpy(), method2: createSpy() };1496            var obj2 = { method2: createSpy() };1497            var stub = createStub().yieldsToOn("method2", context, 7, 8);1498            stub.onFirstCall().yields(1, 2)1499                .onSecondCall().yieldsOn(context, 3, 4)1500                .onThirdCall().yieldsTo("method1", 5, 6)1501                .onCall(3).yieldsToOn("method2", context, 7, 8);1502            var spy1 = createSpy();1503            var spy2 = createSpy();1504            stub(spy1);1505            stub(spy2);1506            stub(obj);1507            stub(obj);1508            stub(obj2); // should continue with default behavior1509            assert(spy1.calledOnce);1510            assert(spy1.calledWithExactly(1, 2));1511            assert(spy2.calledOnce);1512            assert(spy2.calledAfter(spy1));1513            assert(spy2.calledOn(context));1514            assert(spy2.calledWithExactly(3, 4));1515            assert(obj.method1.calledOnce);1516            assert(obj.method1.calledAfter(spy2));1517            assert(obj.method1.calledWithExactly(5, 6));1518            assert(obj.method2.calledOnce);1519            assert(obj.method2.calledAfter(obj.method1));1520            assert(obj.method2.calledOn(context));1521            assert(obj.method2.calledWithExactly(7, 8));1522            assert(obj2.method2.calledOnce);1523            assert(obj2.method2.calledAfter(obj.method2));1524            assert(obj2.method2.calledOn(context));1525            assert(obj2.method2.calledWithExactly(7, 8));1526        });1527        it("can be used with callsArg* to produce a sequence", function () {1528            var spy1 = createSpy();1529            var spy2 = createSpy();1530            var spy3 = createSpy();1531            var spy4 = createSpy();1532            var spy5 = createSpy();1533            var decoy = createSpy();1534            var context = { foo: "bar" };1535            var stub = createStub().callsArgOnWith(3, context, "c", "d");1536            stub.onFirstCall().callsArg(0)1537                .onSecondCall().callsArgWith(1, "a", "b")1538                .onThirdCall().callsArgOn(2, context)1539                .onCall(3).callsArgOnWith(3, context, "c", "d");1540            stub(spy1);1541            stub(decoy, spy2);1542            stub(decoy, decoy, spy3);1543            stub(decoy, decoy, decoy, spy4);1544            stub(decoy, decoy, decoy, spy5); // should continue with default behavior1545            assert(spy1.calledOnce);1546            assert(spy2.calledOnce);1547            assert(spy2.calledAfter(spy1));1548            assert(spy2.calledWithExactly("a", "b"));1549            assert(spy3.calledOnce);1550            assert(spy3.calledAfter(spy2));1551            assert(spy3.calledOn(context));1552            assert(spy4.calledOnce);1553            assert(spy4.calledAfter(spy3));1554            assert(spy4.calledOn(context));1555            assert(spy4.calledWithExactly("c", "d"));1556            assert(spy5.calledOnce);1557            assert(spy5.calledAfter(spy4));1558            assert(spy5.calledOn(context));1559            assert(spy5.calledWithExactly("c", "d"));1560            assert(decoy.notCalled);1561        });1562        it("can be used with yields* and callsArg* in combination to produce a sequence", function () {1563            var stub = createStub().yields(1, 2);1564            stub.onSecondCall().callsArg(1)1565                .onThirdCall().yieldsTo("method")1566                .onCall(3).callsArgWith(2, "a", "b");1567            var obj = { method: createSpy() };1568            var spy1 = createSpy();1569            var spy2 = createSpy();1570            var spy3 = createSpy();1571            var decoy = createSpy();1572            stub(spy1);1573            stub(decoy, spy2);1574            stub(obj);1575            stub(decoy, decoy, spy3);1576            assert(spy1.calledOnce);1577            assert(spy2.calledOnce);1578            assert(spy2.calledAfter(spy1));1579            assert(obj.method.calledOnce);1580            assert(obj.method.calledAfter(spy2));1581            assert(spy3.calledOnce);1582            assert(spy3.calledAfter(obj.method));1583            assert(spy3.calledWithExactly("a", "b"));1584            assert(decoy.notCalled);1585        });1586        it("should interact correctly with assertions (GH-231)", function () {1587            var stub = createStub();1588            var spy = createSpy();1589            stub.callsArgWith(0, "a");1590            stub(spy);1591            assert(spy.calledWith("a"));1592            stub(spy);1593            assert(spy.calledWith("a"));1594            stub.onThirdCall().callsArgWith(0, "b");1595            stub(spy);1596            assert(spy.calledWith("b"));1597        });1598    });1599    describe(".reset", function () {1600        it("resets behavior", function () {1601            var obj = { a: function () {} };1602            var spy = createSpy();1603            createStub(obj, "a").callsArg(1);1604            obj.a(null, spy);1605            obj.a.reset();1606            obj.a(null, spy);1607            assert(spy.calledOnce);1608        });1609        it("resets call history", function () {1610            var stub = createStub();1611            stub(1);1612            stub.reset();1613            stub(2);1614            assert(stub.calledOnce);1615            assert.equals(stub.getCall(0).args[0], 2);1616        });1617    });1618    describe(".resetHistory", function () {1619        it("resets history", function () {1620            var stub = createStub();1621            stub(1);1622            stub.reset();1623            stub(2);1624            assert(stub.calledOnce);1625            assert.equals(stub.getCall(0).args[0], 2);1626        });1627        it("doesn't reset behavior defined using withArgs", function () {1628            var stub = createStub();1629            stub.withArgs("test").returns(10);1630            stub.resetHistory();1631            assert.equals(stub("test"), 10);1632        });1633        it("doesn't reset behavior", function () {1634            var stub = createStub();1635            stub.returns(10);1636            stub.resetHistory();1637            assert.equals(stub("test"), 10);1638        });1639    });1640    describe(".resetBehavior", function () {1641        it("clears yields* and callsArg* sequence", function () {1642            var stub = createStub().yields(1);1643            stub.onFirstCall().callsArg(1);1644            stub.resetBehavior();1645            stub.yields(3);1646            var spyWanted = createSpy();1647            var spyNotWanted = createSpy();1648            stub(spyWanted, spyNotWanted);1649            assert(spyNotWanted.notCalled);1650            assert(spyWanted.calledOnce);1651            assert(spyWanted.calledWithExactly(3));1652        });1653        it("cleans 'returns' behavior", function () {1654            var stub = createStub().returns(1);1655            stub.resetBehavior();1656            refute.defined(stub());1657        });1658        it("cleans behavior of fakes returned by withArgs", function () {1659            var stub = createStub();1660            stub.withArgs("lolz").returns(2);1661            stub.resetBehavior();1662            refute.defined(stub("lolz"));1663        });1664        it("does not clean parents' behavior when called on a fake returned by withArgs", function () {1665            var parentStub = createStub().returns(false);1666            var childStub = parentStub.withArgs("lolz").returns(true);1667            childStub.resetBehavior();1668            assert.same(parentStub("lolz"), false);1669            assert.same(parentStub(), false);1670        });1671        it("cleans 'returnsArg' behavior", function () {1672            var stub = createStub().returnsArg(0);1673            stub.resetBehavior();1674            refute.defined(stub("defined"));1675        });1676        it("cleans 'returnsThis' behavior", function () {1677            var instance = {};1678            instance.stub = createStub.create();1679            instance.stub.returnsThis();1680            instance.stub.resetBehavior();1681            refute.defined(instance.stub());1682        });1683        describe("does not touch properties that are reset by 'reset'", function () {1684            it(".calledOnce", function () {1685                var stub = createStub();1686                stub(1);1687                stub.resetBehavior();1688                assert(stub.calledOnce);1689            });1690            it("called multiple times", function () {1691                var stub = createStub();1692                stub(1);1693                stub(2);1694                stub(3);1695                stub.resetBehavior();1696                assert(stub.called);1697                assert.equals(stub.args.length, 3);1698                assert.equals(stub.returnValues.length, 3);1699                assert.equals(stub.exceptions.length, 3);1700                assert.equals(stub.thisValues.length, 3);1701                assert.defined(stub.firstCall);1702                assert.defined(stub.secondCall);1703                assert.defined(stub.thirdCall);1704                assert.defined(stub.lastCall);1705            });1706            it("call order state", function () {1707                var stubs = [createStub(), createStub()];1708                stubs[0]();1709                stubs[1]();1710                stubs[0].resetBehavior();1711                assert(stubs[0].calledBefore(stubs[1]));1712            });1713            it("fakes returned by withArgs", function () {1714                var stub = createStub();1715                var fakeA = stub.withArgs("a");1716                var fakeB = stub.withArgs("b");1717                stub("a");1718                stub("b");1719                stub("c");1720                var fakeC = stub.withArgs("c");1721                stub.resetBehavior();1722                assert(fakeA.calledOnce);1723                assert(fakeB.calledOnce);1724                assert(fakeC.calledOnce);1725            });1726        });1727    });1728    describe(".length", function () {1729        it("is zero by default", function () {1730            var stub = createStub();1731            assert.equals(stub.length, 0);1732        });1733        it("matches the function length", function () {1734            var api = { someMethod: function (a, b, c) {} }; // eslint-disable-line no-unused-vars1735            var stub = createStub(api, "someMethod");1736            assert.equals(stub.length, 3);1737        });1738    });1739    describe(".createStubInstance", function () {1740        it("stubs existing methods", function () {1741            var Class = function () {};1742            Class.prototype.method = function () {};1743            var stub = createStubInstance(Class);1744            stub.method.returns(3);1745            assert.equals(3, stub.method());1746        });1747        it("doesn't stub fake methods", function () {1748            var Class = function () {};1749            var stub = createStubInstance(Class);1750            assert.exception(function () {1751                stub.method.returns(3);1752            });1753        });1754        it("doesn't call the constructor", function () {1755            var Class = function (a, b) {1756                var c = a + b;1757                throw c;1758            };1759            Class.prototype.method = function () {};1760            var stub = createStubInstance(Class);1761            refute.exception(function () {1762                stub.method(3);1763            });1764        });1765        it("retains non function values", function () {1766            var TYPE = "some-value";1767            var Class = function () {};1768            Class.prototype.type = TYPE;1769            var stub = createStubInstance(Class);1770            assert.equals(TYPE, stub.type);1771        });1772        it("has no side effects on the prototype", function () {1773            var proto = {1774                method: function () {1775                    throw "error";1776                }1777            };1778            var Class = function () {};1779            Class.prototype = proto;1780            var stub = createStubInstance(Class);1781            refute.exception(stub.method);1782            assert.exception(proto.method);1783        });1784        it("throws exception for non function params", function () {1785            var types = [{}, 3, "hi!"];1786            for (var i = 0; i < types.length; i++) {1787                // yes, it's silly to create functions in a loop, it's also a test1788                assert.exception(function () { // eslint-disable-line no-loop-func1789                    createStubInstance(types[i]);1790                });1791            }1792        });1793    });1794    describe(".callThrough", function () {1795        it("does not call original function when arguments match conditional stub", function () {1796            // We need a function here because we can't wrap properties that are already stubs1797            var callCount = 0;1798            var originalFunc = function increaseCallCount() {1799                callCount++;1800            };1801            var myObj = {1802                prop: originalFunc1803            };1804            var propStub = createStub(myObj, "prop");1805            propStub.withArgs("foo").returns("bar");1806            propStub.callThrough();1807            var result = myObj.prop("foo");1808            assert.equals(result, "bar");1809            assert.equals(callCount, 0);1810        });1811        it("calls original function when arguments do not match conditional stub", function () {1812            // We need a function here because we can't wrap properties that are already stubs1813            var callCount = 0;1814            var originalFunc = function increaseCallCount() {1815                callCount++;1816                return 1337;1817            };1818            var myObj = {1819                prop: originalFunc1820            };1821            var propStub = createStub(myObj, "prop");1822            propStub.withArgs("foo").returns("bar");1823            propStub.callThrough(propStub);1824            var result = myObj.prop("not foo");1825            assert.equals(result, 1337);1826            assert.equals(callCount, 1);1827        });1828        it("calls original function with same arguments when call does not match conditional stub", function () {1829            // We need a function here because we can't wrap properties that are already stubs1830            var callArgs = [];1831            var originalFunc = function increaseCallCount() {1832                callArgs = arguments;1833            };1834            var myObj = {1835                prop: originalFunc1836            };1837            var propStub = createStub(myObj, "prop");1838            propStub.withArgs("foo").returns("bar");1839            propStub.callThrough();1840            myObj.prop("not foo");1841            assert.equals(callArgs.length, 1);1842            assert.equals(callArgs[0], "not foo");1843        });1844        it("calls original function with same `this` reference when call does not match conditional stub", function () {1845            // We need a function here because we can't wrap properties that are already stubs1846            var reference = {};1847            var originalFunc = function increaseCallCount() {1848                reference = this;1849            };1850            var myObj = {1851                prop: originalFunc1852            };1853            var propStub = createStub(myObj, "prop");1854            propStub.withArgs("foo").returns("bar");1855            propStub.callThrough();1856            myObj.prop("not foo");1857            assert.equals(reference, myObj);1858        });1859    });1860    describe(".get", function () {1861        it("allows users to stub getter functions for properties", function () {1862            var myObj = {1863                prop: "foo"1864            };1865            createStub(myObj, "prop").get(function getterFn() {1866                return "bar";1867            });1868            assert.equals(myObj.prop, "bar");1869        });1870        it("allows users to stub getter functions for functions", function () {1871            var myObj = {1872                prop: function propGetter() {1873                    return "foo";1874                }1875            };1876            createStub(myObj, "prop").get(function getterFn() {1877                return "bar";1878            });1879            assert.equals(myObj.prop, "bar");1880        });1881        it("replaces old getters", function () {1882            var myObj = {1883                get prop() {1884                    fail("should not call the old getter");1885                }1886            };1887            createStub(myObj, "prop").get(function getterFn() {1888                return "bar";1889            });1890            assert.equals(myObj.prop, "bar");1891        });1892        it("can set getters for non-existing properties", function () {1893            var myObj = {};1894            createStub(myObj, "prop").get(function getterFn() {1895                return "bar";1896            });1897            assert.equals(myObj.prop, "bar");1898        });1899        it("can restore stubbed setters for functions", function () {1900            var propFn = function propFn() {1901                return "bar";1902            };1903            var myObj = {1904                prop: propFn1905            };1906            var stub = createStub(myObj, "prop");1907            stub.get(function getterFn() {1908                return "baz";1909            });1910            stub.restore();1911            assert.equals(myObj.prop, propFn);1912        });1913        it("can restore stubbed getters for properties", function () {1914            var myObj = {1915                get prop() {1916                    return "bar";1917                }1918            };1919            var stub = createStub(myObj, "prop");1920            stub.get(function getterFn() {1921                return "baz";1922            });1923            stub.restore();1924            assert.equals(myObj.prop, "bar");1925        });1926        it("can restore stubbed getters for previously undefined properties", function () {1927            var myObj = {};1928            var stub = createStub(myObj, "nonExisting");1929            stub.get(function getterFn() {1930                return "baz";1931            });1932            stub.restore();1933            assert.equals(getPropertyDescriptor(myObj, "nonExisting"), undefined);1934        });1935    });1936    describe(".set", function () {1937        it("allows users to stub setter functions for properties", function () {1938            var myObj = {1939                prop: "foo"1940            };1941            createStub(myObj, "prop").set(function setterFn() {1942                myObj.example = "bar";1943            });1944            myObj.prop = "baz";1945            assert.equals(myObj.example, "bar");1946        });1947        it("allows users to stub setter functions for functions", function () {1948            var myObj = {1949                prop: function propSetter() {1950                    return "foo";1951                }1952            };1953            createStub(myObj, "prop").set(function setterFn() {1954                myObj.example = "bar";1955            });1956            myObj.prop = "baz";1957            assert.equals(myObj.example, "bar");1958        });1959        it("replaces old setters", function () {1960            var myObj = { // eslint-disable-line accessor-pairs1961                set prop(val) {1962                    fail("should not call the old setter");1963                }1964            };1965            createStub(myObj, "prop").set(function setterFn() {1966                myObj.example = "bar";1967            });1968            myObj.prop = "foo";1969            assert.equals(myObj.example, "bar");1970        });1971        it("can set setters for non-existing properties", function () {1972            var myObj = {};1973            createStub(myObj, "prop").set(function setterFn() {1974                myObj.example = "bar";1975            });1976            myObj.prop = "foo";1977            assert.equals(myObj.example, "bar");1978        });1979        it("can restore stubbed setters for functions", function () {1980            var propFn = function propFn() {1981                return "bar";1982            };1983            var myObj = {1984                prop: propFn1985            };1986            var stub = createStub(myObj, "prop");1987            stub.set(function setterFn() {1988                myObj.otherProp = "baz";1989            });1990            stub.restore();1991            assert.equals(myObj.prop, propFn);1992        });1993        it("can restore stubbed setters for properties", function () {1994            var myObj = { // eslint-disable-line accessor-pairs1995                set prop(val) {1996                    this.otherProp = "bar";1997                    return "bar";1998                }1999            };2000            var stub = createStub(myObj, "prop");2001            stub.set(function setterFn() {2002                myObj.otherProp = "baz";2003            });2004            stub.restore();2005            myObj.prop = "foo";2006            assert.equals(myObj.otherProp, "bar");2007        });2008        it("can restore stubbed setters for previously undefined properties", function () {2009            var myObj = {};2010            var stub = createStub(myObj, "nonExisting");2011            stub.set(function setterFn() {2012                myObj.otherProp = "baz";2013            });2014            stub.restore();2015            assert.equals(getPropertyDescriptor(myObj, "nonExisting"), undefined);2016        });2017    });2018    describe(".value", function () {2019        it("allows stubbing property descriptor values", function () {2020            var myObj = {2021                prop: "rawString"2022            };2023            createStub(myObj, "prop").value("newString");2024            assert.equals(myObj.prop, "newString");2025        });2026        it("allows restoring stubbed property descriptor values", function () {2027            var myObj = {2028                prop: "rawString"2029            };2030            var stub = createStub(myObj, "prop").value("newString");2031            stub.restore();2032            assert.equals(myObj.prop, "rawString");2033        });2034        it("allows restoring previously undefined properties", function () {2035            var obj = {};2036            var stub = createStub(obj, "nonExisting").value(2);2037            stub.restore();2038            assert.equals(getPropertyDescriptor(obj, "nonExisting"), undefined);2039        });2040        it("allows stubbing function static properties", function () {2041            var myFunc = function () {};2042            myFunc.prop = "rawString";2043            createStub(myFunc, "prop").value("newString");2044            assert.equals(myFunc.prop, "newString");2045        });2046        it("allows restoring function static properties", function () {2047            var myFunc = function () {};2048            myFunc.prop = "rawString";2049            var stub = createStub(myFunc, "prop").value("newString");2050            stub.restore();2051            assert.equals(myFunc.prop, "rawString");2052        });2053        it("allows stubbing object props with configurable false", function () {2054            var myObj = {};2055            Object.defineProperty(myObj, "prop", {2056                configurable: false,2057                enumerable: true,2058                writable: true,2059                value: "static"2060            });2061            createStub(myObj, "prop").value("newString");2062            assert.equals(myObj.prop, "newString");2063        });2064    });...

resources-handle-pull-request.js

Source:resources-handle-pull-request.js

1'use strict';2const _ = require('lodash');3const expect = require('chai').expect;4const injectr = require('injectr');5const sinon = require('sinon');6const testData = require('./testData');7describe('resources.handlePullRequest()', () => {8  const emitter = testData.emitterMock;9  const config = testData.configMock;10  const mockedHandlePr = (createStub, updateStub) =>11    injectr('../../src/resources/handle-pull-request.js', {12      '../services/github': () => ({13        createPullRequest: createStub,14        updatePullRequest: updateStub15      })16    })({ emitter, config });17  const repository = testData.postPullRequestFetchInfoRepository;18  describe('when pr not found', () => {19    let err, createStub, updateStub;20    beforeEach(done => {21      createStub = sinon.stub().yields(null, 'ok');22      updateStub = sinon.stub().yields(null, 'ok');23      mockedHandlePr(createStub, updateStub)(_.cloneDeep(repository), error => {24        err = error;25        done();26      });27    });28    it('should not error', () => {29      expect(err).to.be.null;30    });31    it('should create pr', () => {32      expect(createStub.called).to.be.true;33      expect(updateStub.called).to.be.false;34    });35  });36  describe('when pr not found and workingBranch=develop', () => {37    let err, createStub, updateStub;38    beforeEach(done => {39      createStub = sinon.stub().yields(null, 'ok');40      updateStub = sinon.stub().yields(null, 'ok');41      const repo = _.cloneDeep(repository);42      repo.manifestContent.workingBranch = 'develop';43      mockedHandlePr(createStub, updateStub)(repo, error => {44        err = error;45        done();46      });47    });48    it('should not error', () => {49      expect(err).to.be.null;50    });51    it('should create pr to develop branch', () => {52      expect(createStub.args[0][0].base).to.equal('develop');53      expect(createStub.called).to.be.true;54      expect(updateStub.called).to.be.false;55    });56  });57  describe('when pr found but outdated and closed', () => {58    let err, createStub, updateStub;59    beforeEach(done => {60      const repo = _.cloneDeep(repository);61      repo.prInfo = {62        found: true,63        number: 13,64        createdAt: '2017-02-15T15:29:05Z',65        outdated: true,66        closed: true67      };68      createStub = sinon.stub().yields(null, 'ok');69      updateStub = sinon.stub().yields(null, 'ok');70      mockedHandlePr(createStub, updateStub)(repo, error => {71        err = error;72        done();73      });74    });75    it('should not error', () => {76      expect(err).to.be.null;77    });78    it('should create pr', () => {79      expect(createStub.called).to.be.true;80      expect(updateStub.called).to.be.false;81    });82  });83  describe('when pr found and valid', () => {84    let err, createStub, updateStub;85    beforeEach(done => {86      const repo = _.cloneDeep(repository);87      repo.prInfo = {88        found: true,89        number: 13,90        createdAt: '2017-02-15T15:29:05Z',91        outdated: false92      };93      createStub = sinon.stub().yields(null, 'ok');94      updateStub = sinon.stub().yields(null, 'ok');95      mockedHandlePr(createStub, updateStub)(repo, error => {96        err = error;97        done();98      });99    });100    it('should not error', () => {101      expect(err).to.be.null;102    });103    it('should update pr', () => {104      expect(createStub.called).to.be.false;105      expect(updateStub.called).to.be.true;106      expect(updateStub.args[0][0].pull_number).to.equal(13);107    });108  });109  describe('when pr found and valid and workingBranch=develop', () => {110    let err, createStub, updateStub;111    beforeEach(done => {112      const repo = _.cloneDeep(repository);113      repo.prInfo = {114        found: true,115        number: 13,116        createdAt: '2017-02-15T15:29:05Z',117        outdated: false118      };119      repo.manifestContent.workingBranch = 'develop';120      createStub = sinon.stub().yields(null, 'ok');121      updateStub = sinon.stub().yields(null, 'ok');122      mockedHandlePr(createStub, updateStub)(repo, error => {123        err = error;124        done();125      });126    });127    it('should not error', () => {128      expect(err).to.be.null;129    });130    it('should update pr to develop branch', () => {131      expect(createStub.called).to.be.false;132      expect(updateStub.called).to.be.true;133      expect(updateStub.args[0][0].base).to.equal('develop');134      expect(updateStub.args[0][0].pull_number).to.equal(13);135    });136  });137  describe('when pr create fails', () => {138    let err, createStub, updateStub;139    beforeEach(done => {140      const repo = _.cloneDeep(repository);141      repo.prInfo = {142        found: true,143        number: 13,144        createdAt: '2017-02-15T15:29:05Z',145        outdated: true,146        closed: true147      };148      createStub = sinon.stub().yields('an error');149      updateStub = sinon.stub().yields(null, 'ok');150      mockedHandlePr(createStub, updateStub)(repo, error => {151        err = error;152        done();153      });154    });155    it('should show an error', () => {156      expect(err.toString()).to.contain('Failed while creating pull request');157    });158  });159  describe('when pr update fails', () => {160    let err, createStub, updateStub;161    beforeEach(done => {162      const repo = _.cloneDeep(repository);163      repo.prInfo = {164        found: true,165        number: 13,166        createdAt: '2017-02-15T15:29:05Z',167        outdated: false168      };169      createStub = sinon.stub().yields(null, 'ok');170      updateStub = sinon.stub().yields('an error');171      mockedHandlePr(createStub, updateStub)(repo, error => {172        err = error;173        done();174      });175    });176    it('should show an error', () => {177      expect(err.toString()).to.contain('Failed while updating pull request');178    });179  });180  describe('when the skipPullRequest flag is true', () => {181    let err, createStub, updateStub;182    beforeEach(done => {183      const repo = _.cloneDeep(repository);184      repo.skipPullRequest = true;185      createStub = sinon.stub().yields(null, 'ok');186      updateStub = sinon.stub().yields(null, 'ok');187      mockedHandlePr(createStub, updateStub)(repo, error => {188        err = error;189        done();190      });191    });192    it('should not error', () => {193      expect(err).to.be.null;194    });195    it('should not create or update any pr', () => {196      expect(createStub.called).to.be.false;197      expect(updateStub.called).to.be.false;198    });199  });...

Using AI Code Generation

1var sinon = require('sinon');2var stub = sinon.createStub();3stub();4console.log(stub.called);5var sinon = require('sinon');6var stub = sinon.createStubInstance(Date);7stub.toUTCString();8console.log(stub.toUTCString.called);9var sinon = require('sinon');10var fake = sinon.fake();11fake();12console.log(fake.called);13var sinon = require('sinon');14var server = sinon.fakeServer.create();15server.respondWith(16  [200, { "Content-Type": "application/json" }, '{ "foo": "bar" }']17);18server.respond();19console.log(server.requests[0].url);20console.log(server.requests[0].method);21var sinon = require('sinon');22var clock = sinon.useFakeTimers();23var server = sinon.fakeServer.create();24server.respondWith(25  [200, { "Content-Type": "application/json" }, '{ "foo": "bar" }']26);27server.respond();28console.log(server.requests[0].url);29console.log(server.requests[0].method);30var sinon = require('sinon');31var clock = sinon.useFakeTimers();32console.log(Date.now());33clock.tick(100);34console.log(Date.now());35var sinon = require('sinon');36var fake = sinon.fake.yieldsTo("callback", "arg1", "arg2");37fake(function callback(arg1, arg2){38});39var sinon = require('sinon');40var fake = sinon.fake.yields("arg1", "arg2");41fake(function callback(arg1, arg2){42});

Using AI Code Generation

1var sinon = require('sinon');2var foo = { 3    setName: function(name) { 4        this.name = name;5    }, 6    setAge: function(age) { 7        this.age = age;8    }9};10var stub = sinon.createStubInstance(foo);11stub.setName('foo');12stub.setAge(25);13var sinon = require('sinon');14var foo = function(name, age) { 15    this.name = name;16    this.age = age;17};18var stub = sinon.createStubInstance(foo);19stub.setName('foo');20stub.setAge(25);21var sinon = require('sinon');22var foo = { 23    setName: function(name) { 24        this.name = name;25    }, 26    setAge: function(age) { 27        this.age = age;28    }29};30var stub = sinon.createStubInstance(foo);31stub.setName('foo');32stub.setAge(25);33console.log(stub

Using AI Code Generation

1var sinon = require('sinon');2var stub = sinon.stub();3stub('foo');4var sinon = require('sinon');5var stub = sinon.createStubInstance(Bar);6stub.foo('foo');7var sinon = require('sinon');8var stub = sinon.createStubInstance(Bar);9stub.foo('foo');10var sinon = require('sinon');11var stub = sinon.createStubInstance(Bar);12stub.foo('foo');13var sinon = require('sinon');14var stub = sinon.createStubInstance(Bar);15stub.foo('foo');16var sinon = require('sinon');17var stub = sinon.createStubInstance(Bar);18stub.foo('foo');19var sinon = require('sinon');20var stub = sinon.createStubInstance(Bar);21stub.foo('foo');22var sinon = require('sinon');23var stub = sinon.createStubInstance(Bar);24stub.foo('foo');25var sinon = require('sinon');26var stub = sinon.createStubInstance(Bar);27stub.foo('foo');28var sinon = require('sinon');29var stub = sinon.createStubInstance(Bar);30stub.foo('foo');31var sinon = require('sinon');32var stub = sinon.createStubInstance(Bar);33stub.foo('foo');34var sinon = require('sinon');35var stub = sinon.createStubInstance(Bar);36stub.foo('

Using AI Code Generation

1var sinon = require('sinon');2var obj = {3  method: function() {4    console.log('real method');5  }6};7var stub = sinon.stub(obj, 'method');8stub.returns(42);9var sinon = require('sinon');10var obj = sinon.createStubInstance(MyConstructor);11obj.myMethod.returns(42);12var sinon = require('sinon');13var obj = {14  method: function() {15    console.log('real method');16  }17};18var stub = sinon.stub(obj, 'method', function() {19  console.log('stub method');20});21var sinon = require('sinon');22var obj = {23  method: function() {24    console.log('real method');25  }26};27var stub = sinon.stub(obj, 'method', function() {28  console.log('stub method');29});30var sinon = require('sinon');31var obj = {32  method: function() {33    console.log('real method');34  }35};36var stub = sinon.stub(obj, 'method', function() {37  console.log('stub method');38});39var sinon = require('sinon');40var obj = {41  method: function() {42    console.log('real method');43  }44};45var stub = sinon.stub(obj, 'method', function() {46  console.log('stub method');47});48var sinon = require('sinon');49var obj = {50  method: function() {51    console.log('real method');52  }53};54var stub = sinon.stub(obj, 'method', function() {55  console.log('stub method');56});57var sinon = require('sinon');58var obj = {59  method: function() {60    console.log('real method');61  }62};63var stub = sinon.stub(obj, 'method', function() {64  console.log('stub

Using AI Code Generation

1var sinon = require('sinon');2var assert = require('assert');3var fs = require('fs');4var stub = sinon.stub(fs, 'readFile');5stub.yields(null, 'hello world');6fs.readFile('foo.txt', function(err, data) {7  assert.equal(data, 'hello world');8});9stub.restore();10fs.readFile('foo.txt', function(err, data) {11  assert.equal(data, 'foo');12});

Using AI Code Generation

1var stub = sinon.createStubInstance(object);2var stub = sinon.createStubInstance(object);3var stub = sinon.createStubInstance(object);4var stub = sinon.createStubInstance(object);5var stub = sinon.createStubInstance(object);6var stub = sinon.createStubInstance(object);7var stub = sinon.createStubInstance(object);8var stub = sinon.createStubInstance(object);9var stub = sinon.createStubInstance(object);10var stub = sinon.createStubInstance(object);11var stub = sinon.createStubInstance(object);12var stub = sinon.createStubInstance(object);13var stub = sinon.createStubInstance(object);14var stub = sinon.createStubInstance(object);15var stub = sinon.createStubInstance(object);16var stub = sinon.createStubInstance(object);17var stub = sinon.createStubInstance(object);18var stub = sinon.createStubInstance(object);19var stub = sinon.createStubInstance(object);20var stub = sinon.createStubInstance(object);21var stub = sinon.createStubInstance(object);

Using AI Code Generation

1var sinon = require('sinon');2var myObj = {3    myMethod: function() {4        console.log("myMethod called");5    }6};7var stub = sinon.stub(myObj, "myMethod");8myObj.myMethod();9stub.restore();10myObj.myMethod();11var sinon = require('sinon');12var myObj = function() {13    this.myMethod = function() {14        console.log("myMethod called");15    };16};17var stub = sinon.createStubInstance(myObj);18stub.myMethod();19stub.restore();20stub.myMethod();21var sinon = require('sinon');22var myObj = {23    myMethod: function() {24        console.log("myMethod called");25    }26};27var stub = sinon.stub(myObj);28stub.myMethod();29stub.restore();30stub.myMethod();

Using AI Code Generation

1var sinon = require('sinon');2var assert = require('assert');3var myModule = require('./myModule');4describe('myModule', function() {5    it('should return value from stub', function() {6        var stub = sinon.stub(myModule, 'myMethod');7        stub.onCall(0).returns(1);8        stub.onCall(1).returns(2);9        stub.onCall(2).returns(3);10        assert.equal(myModule.myMethod(), 1);11        assert.equal(myModule.myMethod(), 2);12        assert.equal(myModule.myMethod(), 3);13    });14});15exports.myMethod = function() {16    return 1;17}18  1 passing (8ms)19We have tested the myMethod() function of myModule.js. We have also used the onCall() method to return different values on different calls. We can also use the onCall() method to throw an error on a specific call. Here is an example:20var sinon = require('sinon');21var assert = require('assert');22var myModule = require('./myModule');23describe('myModule', function() {24    it('should return value from stub', function() {25        var stub = sinon.stub(myModule, 'myMethod');26        stub.onCall(0).returns(1);27        stub.onCall(1).returns(2);28        stub.onCall(2).throws(new Error('Error thrown by myMethod'));29        assert.equal(myModule.myMethod(), 1);30        assert.equal(myModule.myMethod(), 2);31        assert.throws(function() {32            myModule.myMethod();33        }, Error, 'Error thrown by myMethod');34    });35});36exports.myMethod = function() {

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.