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How to use assertOwnPropertyDescriptor method in chai

Best JavaScript code snippet using chai

assertions.js

Source:assertions.js

1/*!2 * chai3 * http://chaijs.com4 * Copyright(c) 2011-2014 Jake Luer <jake@alogicalparadox.com>5 * MIT Licensed6 */7module.exports = function (chai, _) {8  var Assertion = chai.Assertion9    , toString = Object.prototype.toString10    , flag = _.flag;11  /**12   * ### Language Chains13   *14   * The following are provided as chainable getters to15   * improve the readability of your assertions. They16   * do not provide testing capabilities unless they17   * have been overwritten by a plugin.18   *19   * **Chains**20   *21   * - to22   * - be23   * - been24   * - is25   * - that26   * - which27   * - and28   * - has29   * - have30   * - with31   * - at32   * - of33   * - same34   *35   * @name language chains36   * @api public37   */38  [ 'to', 'be', 'been'39  , 'is', 'and', 'has', 'have'40  , 'with', 'that', 'which', 'at'41  , 'of', 'same' ].forEach(function (chain) {42    Assertion.addProperty(chain, function () {43      return this;44    });45  });46  /**47   * ### .not48   *49   * Negates any of assertions following in the chain.50   *51   *     expect(foo).to.not.equal('bar');52   *     expect(goodFn).to.not.throw(Error);53   *     expect({ foo: 'baz' }).to.have.property('foo')54   *       .and.not.equal('bar');55   *56   * @name not57   * @api public58   */59  Assertion.addProperty('not', function () {60    flag(this, 'negate', true);61  });62  /**63   * ### .deep64   *65   * Sets the `deep` flag, later used by the `equal` and66   * `property` assertions.67   *68   *     expect(foo).to.deep.equal({ bar: 'baz' });69   *     expect({ foo: { bar: { baz: 'quux' } } })70   *       .to.have.deep.property('foo.bar.baz', 'quux');71   *72   * `.deep.property` special characters can be escaped73   * by adding two slashes before the `.` or `[]`.74   *75   *     var deepCss = { '.link': { '[target]': 42 }};76   *     expect(deepCss).to.have.deep.property('\\.link.\\[target\\]', 42);77   *78   * @name deep79   * @api public80   */81  Assertion.addProperty('deep', function () {82    flag(this, 'deep', true);83  });84  /**85   * ### .any86   *87   * Sets the `any` flag, (opposite of the `all` flag)88   * later used in the `keys` assertion.89   *90   *     expect(foo).to.have.any.keys('bar', 'baz');91   *92   * @name any93   * @api public94   */95  Assertion.addProperty('any', function () {96    flag(this, 'any', true);97    flag(this, 'all', false)98  });99  /**100   * ### .all101   *102   * Sets the `all` flag (opposite of the `any` flag)103   * later used by the `keys` assertion.104   *105   *     expect(foo).to.have.all.keys('bar', 'baz');106   *107   * @name all108   * @api public109   */110  Assertion.addProperty('all', function () {111    flag(this, 'all', true);112    flag(this, 'any', false);113  });114  /**115   * ### .a(type)116   *117   * The `a` and `an` assertions are aliases that can be118   * used either as language chains or to assert a value's119   * type.120   *121   *     // typeof122   *     expect('test').to.be.a('string');123   *     expect({ foo: 'bar' }).to.be.an('object');124   *     expect(null).to.be.a('null');125   *     expect(undefined).to.be.an('undefined');126   *127   *     // language chain128   *     expect(foo).to.be.an.instanceof(Foo);129   *130   * @name a131   * @alias an132   * @param {String} type133   * @param {String} message _optional_134   * @api public135   */136  function an (type, msg) {137    if (msg) flag(this, 'message', msg);138    type = type.toLowerCase();139    var obj = flag(this, 'object')140      , article = ~[ 'a', 'e', 'i', 'o', 'u' ].indexOf(type.charAt(0)) ? 'an ' : 'a ';141    this.assert(142        type === _.type(obj)143      , 'expected #{this} to be ' + article + type144      , 'expected #{this} not to be ' + article + type145    );146  }147  Assertion.addChainableMethod('an', an);148  Assertion.addChainableMethod('a', an);149  /**150   * ### .include(value)151   *152   * The `include` and `contain` assertions can be used as either property153   * based language chains or as methods to assert the inclusion of an object154   * in an array or a substring in a string. When used as language chains,155   * they toggle the `contains` flag for the `keys` assertion.156   *157   *     expect([1,2,3]).to.include(2);158   *     expect('foobar').to.contain('foo');159   *     expect({ foo: 'bar', hello: 'universe' }).to.include.keys('foo');160   *161   * @name include162   * @alias contain163   * @alias includes164   * @alias contains165   * @param {Object|String|Number} obj166   * @param {String} message _optional_167   * @api public168   */169  function includeChainingBehavior () {170    flag(this, 'contains', true);171  }172  function include (val, msg) {173    if (msg) flag(this, 'message', msg);174    var obj = flag(this, 'object');175    var expected = false;176    if (_.type(obj) === 'array' && _.type(val) === 'object') {177      for (var i in obj) {178        if (_.eql(obj[i], val)) {179          expected = true;180          break;181        }182      }183    } else if (_.type(val) === 'object') {184      if (!flag(this, 'negate')) {185        for (var k in val) new Assertion(obj).property(k, val[k]);186        return;187      }188      var subset = {};189      for (var k in val) subset[k] = obj[k];190      expected = _.eql(subset, val);191    } else {192      expected = obj && ~obj.indexOf(val);193    }194    this.assert(195        expected196      , 'expected #{this} to include ' + _.inspect(val)197      , 'expected #{this} to not include ' + _.inspect(val));198  }199  Assertion.addChainableMethod('include', include, includeChainingBehavior);200  Assertion.addChainableMethod('contain', include, includeChainingBehavior);201  Assertion.addChainableMethod('contains', include, includeChainingBehavior);202  Assertion.addChainableMethod('includes', include, includeChainingBehavior);203  /**204   * ### .ok205   *206   * Asserts that the target is truthy.207   *208   *     expect('everthing').to.be.ok;209   *     expect(1).to.be.ok;210   *     expect(false).to.not.be.ok;211   *     expect(undefined).to.not.be.ok;212   *     expect(null).to.not.be.ok;213   *214   * @name ok215   * @api public216   */217  Assertion.addProperty('ok', function () {218    this.assert(219        flag(this, 'object')220      , 'expected #{this} to be truthy'221      , 'expected #{this} to be falsy');222  });223  /**224   * ### .true225   *226   * Asserts that the target is `true`.227   *228   *     expect(true).to.be.true;229   *     expect(1).to.not.be.true;230   *231   * @name true232   * @api public233   */234  Assertion.addProperty('true', function () {235    this.assert(236        true === flag(this, 'object')237      , 'expected #{this} to be true'238      , 'expected #{this} to be false'239      , this.negate ? false : true240    );241  });242  /**243   * ### .false244   *245   * Asserts that the target is `false`.246   *247   *     expect(false).to.be.false;248   *     expect(0).to.not.be.false;249   *250   * @name false251   * @api public252   */253  Assertion.addProperty('false', function () {254    this.assert(255        false === flag(this, 'object')256      , 'expected #{this} to be false'257      , 'expected #{this} to be true'258      , this.negate ? true : false259    );260  });261  /**262   * ### .null263   *264   * Asserts that the target is `null`.265   *266   *     expect(null).to.be.null;267   *     expect(undefined).to.not.be.null;268   *269   * @name null270   * @api public271   */272  Assertion.addProperty('null', function () {273    this.assert(274        null === flag(this, 'object')275      , 'expected #{this} to be null'276      , 'expected #{this} not to be null'277    );278  });279  /**280   * ### .undefined281   *282   * Asserts that the target is `undefined`.283   *284   *     expect(undefined).to.be.undefined;285   *     expect(null).to.not.be.undefined;286   *287   * @name undefined288   * @api public289   */290  Assertion.addProperty('undefined', function () {291    this.assert(292        undefined === flag(this, 'object')293      , 'expected #{this} to be undefined'294      , 'expected #{this} not to be undefined'295    );296  });297  /**298   * ### .exist299   *300   * Asserts that the target is neither `null` nor `undefined`.301   *302   *     var foo = 'hi'303   *       , bar = null304   *       , baz;305   *306   *     expect(foo).to.exist;307   *     expect(bar).to.not.exist;308   *     expect(baz).to.not.exist;309   *310   * @name exist311   * @api public312   */313  Assertion.addProperty('exist', function () {314    this.assert(315        null != flag(this, 'object')316      , 'expected #{this} to exist'317      , 'expected #{this} to not exist'318    );319  });320  /**321   * ### .empty322   *323   * Asserts that the target's length is `0`. For arrays and strings, it checks324   * the `length` property. For objects, it gets the count of325   * enumerable keys.326   *327   *     expect([]).to.be.empty;328   *     expect('').to.be.empty;329   *     expect({}).to.be.empty;330   *331   * @name empty332   * @api public333   */334  Assertion.addProperty('empty', function () {335    var obj = flag(this, 'object')336      , expected = obj;337    if (Array.isArray(obj) || 'string' === typeof object) {338      expected = obj.length;339    } else if (typeof obj === 'object') {340      expected = Object.keys(obj).length;341    }342    this.assert(343        !expected344      , 'expected #{this} to be empty'345      , 'expected #{this} not to be empty'346    );347  });348  /**349   * ### .arguments350   *351   * Asserts that the target is an arguments object.352   *353   *     function test () {354   *       expect(arguments).to.be.arguments;355   *     }356   *357   * @name arguments358   * @alias Arguments359   * @api public360   */361  function checkArguments () {362    var obj = flag(this, 'object')363      , type = Object.prototype.toString.call(obj);364    this.assert(365        '[object Arguments]' === type366      , 'expected #{this} to be arguments but got ' + type367      , 'expected #{this} to not be arguments'368    );369  }370  Assertion.addProperty('arguments', checkArguments);371  Assertion.addProperty('Arguments', checkArguments);372  /**373   * ### .equal(value)374   *375   * Asserts that the target is strictly equal (`===`) to `value`.376   * Alternately, if the `deep` flag is set, asserts that377   * the target is deeply equal to `value`.378   *379   *     expect('hello').to.equal('hello');380   *     expect(42).to.equal(42);381   *     expect(1).to.not.equal(true);382   *     expect({ foo: 'bar' }).to.not.equal({ foo: 'bar' });383   *     expect({ foo: 'bar' }).to.deep.equal({ foo: 'bar' });384   *385   * @name equal386   * @alias equals387   * @alias eq388   * @alias deep.equal389   * @param {Mixed} value390   * @param {String} message _optional_391   * @api public392   */393  function assertEqual (val, msg) {394    if (msg) flag(this, 'message', msg);395    var obj = flag(this, 'object');396    if (flag(this, 'deep')) {397      return this.eql(val);398    } else {399      this.assert(400          val === obj401        , 'expected #{this} to equal #{exp}'402        , 'expected #{this} to not equal #{exp}'403        , val404        , this._obj405        , true406      );407    }408  }409  Assertion.addMethod('equal', assertEqual);410  Assertion.addMethod('equals', assertEqual);411  Assertion.addMethod('eq', assertEqual);412  /**413   * ### .eql(value)414   *415   * Asserts that the target is deeply equal to `value`.416   *417   *     expect({ foo: 'bar' }).to.eql({ foo: 'bar' });418   *     expect([ 1, 2, 3 ]).to.eql([ 1, 2, 3 ]);419   *420   * @name eql421   * @alias eqls422   * @param {Mixed} value423   * @param {String} message _optional_424   * @api public425   */426  function assertEql(obj, msg) {427    if (msg) flag(this, 'message', msg);428    this.assert(429        _.eql(obj, flag(this, 'object'))430      , 'expected #{this} to deeply equal #{exp}'431      , 'expected #{this} to not deeply equal #{exp}'432      , obj433      , this._obj434      , true435    );436  }437  Assertion.addMethod('eql', assertEql);438  Assertion.addMethod('eqls', assertEql);439  /**440   * ### .above(value)441   *442   * Asserts that the target is greater than `value`.443   *444   *     expect(10).to.be.above(5);445   *446   * Can also be used in conjunction with `length` to447   * assert a minimum length. The benefit being a448   * more informative error message than if the length449   * was supplied directly.450   *451   *     expect('foo').to.have.length.above(2);452   *     expect([ 1, 2, 3 ]).to.have.length.above(2);453   *454   * @name above455   * @alias gt456   * @alias greaterThan457   * @param {Number} value458   * @param {String} message _optional_459   * @api public460   */461  function assertAbove (n, msg) {462    if (msg) flag(this, 'message', msg);463    var obj = flag(this, 'object');464    if (flag(this, 'doLength')) {465      new Assertion(obj, msg).to.have.property('length');466      var len = obj.length;467      this.assert(468          len > n469        , 'expected #{this} to have a length above #{exp} but got #{act}'470        , 'expected #{this} to not have a length above #{exp}'471        , n472        , len473      );474    } else {475      this.assert(476          obj > n477        , 'expected #{this} to be above ' + n478        , 'expected #{this} to be at most ' + n479      );480    }481  }482  Assertion.addMethod('above', assertAbove);483  Assertion.addMethod('gt', assertAbove);484  Assertion.addMethod('greaterThan', assertAbove);485  /**486   * ### .least(value)487   *488   * Asserts that the target is greater than or equal to `value`.489   *490   *     expect(10).to.be.at.least(10);491   *492   * Can also be used in conjunction with `length` to493   * assert a minimum length. The benefit being a494   * more informative error message than if the length495   * was supplied directly.496   *497   *     expect('foo').to.have.length.of.at.least(2);498   *     expect([ 1, 2, 3 ]).to.have.length.of.at.least(3);499   *500   * @name least501   * @alias gte502   * @param {Number} value503   * @param {String} message _optional_504   * @api public505   */506  function assertLeast (n, msg) {507    if (msg) flag(this, 'message', msg);508    var obj = flag(this, 'object');509    if (flag(this, 'doLength')) {510      new Assertion(obj, msg).to.have.property('length');511      var len = obj.length;512      this.assert(513          len >= n514        , 'expected #{this} to have a length at least #{exp} but got #{act}'515        , 'expected #{this} to have a length below #{exp}'516        , n517        , len518      );519    } else {520      this.assert(521          obj >= n522        , 'expected #{this} to be at least ' + n523        , 'expected #{this} to be below ' + n524      );525    }526  }527  Assertion.addMethod('least', assertLeast);528  Assertion.addMethod('gte', assertLeast);529  /**530   * ### .below(value)531   *532   * Asserts that the target is less than `value`.533   *534   *     expect(5).to.be.below(10);535   *536   * Can also be used in conjunction with `length` to537   * assert a maximum length. The benefit being a538   * more informative error message than if the length539   * was supplied directly.540   *541   *     expect('foo').to.have.length.below(4);542   *     expect([ 1, 2, 3 ]).to.have.length.below(4);543   *544   * @name below545   * @alias lt546   * @alias lessThan547   * @param {Number} value548   * @param {String} message _optional_549   * @api public550   */551  function assertBelow (n, msg) {552    if (msg) flag(this, 'message', msg);553    var obj = flag(this, 'object');554    if (flag(this, 'doLength')) {555      new Assertion(obj, msg).to.have.property('length');556      var len = obj.length;557      this.assert(558          len < n559        , 'expected #{this} to have a length below #{exp} but got #{act}'560        , 'expected #{this} to not have a length below #{exp}'561        , n562        , len563      );564    } else {565      this.assert(566          obj < n567        , 'expected #{this} to be below ' + n568        , 'expected #{this} to be at least ' + n569      );570    }571  }572  Assertion.addMethod('below', assertBelow);573  Assertion.addMethod('lt', assertBelow);574  Assertion.addMethod('lessThan', assertBelow);575  /**576   * ### .most(value)577   *578   * Asserts that the target is less than or equal to `value`.579   *580   *     expect(5).to.be.at.most(5);581   *582   * Can also be used in conjunction with `length` to583   * assert a maximum length. The benefit being a584   * more informative error message than if the length585   * was supplied directly.586   *587   *     expect('foo').to.have.length.of.at.most(4);588   *     expect([ 1, 2, 3 ]).to.have.length.of.at.most(3);589   *590   * @name most591   * @alias lte592   * @param {Number} value593   * @param {String} message _optional_594   * @api public595   */596  function assertMost (n, msg) {597    if (msg) flag(this, 'message', msg);598    var obj = flag(this, 'object');599    if (flag(this, 'doLength')) {600      new Assertion(obj, msg).to.have.property('length');601      var len = obj.length;602      this.assert(603          len <= n604        , 'expected #{this} to have a length at most #{exp} but got #{act}'605        , 'expected #{this} to have a length above #{exp}'606        , n607        , len608      );609    } else {610      this.assert(611          obj <= n612        , 'expected #{this} to be at most ' + n613        , 'expected #{this} to be above ' + n614      );615    }616  }617  Assertion.addMethod('most', assertMost);618  Assertion.addMethod('lte', assertMost);619  /**620   * ### .within(start, finish)621   *622   * Asserts that the target is within a range.623   *624   *     expect(7).to.be.within(5,10);625   *626   * Can also be used in conjunction with `length` to627   * assert a length range. The benefit being a628   * more informative error message than if the length629   * was supplied directly.630   *631   *     expect('foo').to.have.length.within(2,4);632   *     expect([ 1, 2, 3 ]).to.have.length.within(2,4);633   *634   * @name within635   * @param {Number} start lowerbound inclusive636   * @param {Number} finish upperbound inclusive637   * @param {String} message _optional_638   * @api public639   */640  Assertion.addMethod('within', function (start, finish, msg) {641    if (msg) flag(this, 'message', msg);642    var obj = flag(this, 'object')643      , range = start + '..' + finish;644    if (flag(this, 'doLength')) {645      new Assertion(obj, msg).to.have.property('length');646      var len = obj.length;647      this.assert(648          len >= start && len <= finish649        , 'expected #{this} to have a length within ' + range650        , 'expected #{this} to not have a length within ' + range651      );652    } else {653      this.assert(654          obj >= start && obj <= finish655        , 'expected #{this} to be within ' + range656        , 'expected #{this} to not be within ' + range657      );658    }659  });660  /**661   * ### .instanceof(constructor)662   *663   * Asserts that the target is an instance of `constructor`.664   *665   *     var Tea = function (name) { this.name = name; }666   *       , Chai = new Tea('chai');667   *668   *     expect(Chai).to.be.an.instanceof(Tea);669   *     expect([ 1, 2, 3 ]).to.be.instanceof(Array);670   *671   * @name instanceof672   * @param {Constructor} constructor673   * @param {String} message _optional_674   * @alias instanceOf675   * @api public676   */677  function assertInstanceOf (constructor, msg) {678    if (msg) flag(this, 'message', msg);679    var name = _.getName(constructor);680    this.assert(681        flag(this, 'object') instanceof constructor682      , 'expected #{this} to be an instance of ' + name683      , 'expected #{this} to not be an instance of ' + name684    );685  };686  Assertion.addMethod('instanceof', assertInstanceOf);687  Assertion.addMethod('instanceOf', assertInstanceOf);688  /**689   * ### .property(name, [value])690   *691   * Asserts that the target has a property `name`, optionally asserting that692   * the value of that property is strictly equal to  `value`.693   * If the `deep` flag is set, you can use dot- and bracket-notation for deep694   * references into objects and arrays.695   *696   *     // simple referencing697   *     var obj = { foo: 'bar' };698   *     expect(obj).to.have.property('foo');699   *     expect(obj).to.have.property('foo', 'bar');700   *701   *     // deep referencing702   *     var deepObj = {703   *         green: { tea: 'matcha' }704   *       , teas: [ 'chai', 'matcha', { tea: 'konacha' } ]705   *     };706   *707   *     expect(deepObj).to.have.deep.property('green.tea', 'matcha');708   *     expect(deepObj).to.have.deep.property('teas[1]', 'matcha');709   *     expect(deepObj).to.have.deep.property('teas[2].tea', 'konacha');710   *711   * You can also use an array as the starting point of a `deep.property`712   * assertion, or traverse nested arrays.713   *714   *     var arr = [715   *         [ 'chai', 'matcha', 'konacha' ]716   *       , [ { tea: 'chai' }717   *         , { tea: 'matcha' }718   *         , { tea: 'konacha' } ]719   *     ];720   *721   *     expect(arr).to.have.deep.property('[0][1]', 'matcha');722   *     expect(arr).to.have.deep.property('[1][2].tea', 'konacha');723   *724   * Furthermore, `property` changes the subject of the assertion725   * to be the value of that property from the original object. This726   * permits for further chainable assertions on that property.727   *728   *     expect(obj).to.have.property('foo')729   *       .that.is.a('string');730   *     expect(deepObj).to.have.property('green')731   *       .that.is.an('object')732   *       .that.deep.equals({ tea: 'matcha' });733   *     expect(deepObj).to.have.property('teas')734   *       .that.is.an('array')735   *       .with.deep.property('[2]')736   *         .that.deep.equals({ tea: 'konacha' });737   *738   * Note that dots and bracket in `name` must be backslash-escaped when739   * the `deep` flag is set, while they must NOT be escaped when the `deep`740   * flag is not set.741   *742   *     // simple referencing743   *     var css = { '.link[target]': 42 };744   *     expect(css).to.have.property('.link[target]', 42);745   *746   *     // deep referencing747   *     var deepCss = { '.link': { '[target]': 42 }};748   *     expect(deepCss).to.have.deep.property('\\.link.\\[target\\]', 42);749   *750   * @name property751   * @alias deep.property752   * @param {String} name753   * @param {Mixed} value (optional)754   * @param {String} message _optional_755   * @returns value of property for chaining756   * @api public757   */758  Assertion.addMethod('property', function (name, val, msg) {759    if (msg) flag(this, 'message', msg);760    var isDeep = !!flag(this, 'deep')761      , descriptor = isDeep ? 'deep property ' : 'property '762      , negate = flag(this, 'negate')763      , obj = flag(this, 'object')764      , pathInfo = isDeep ? _.getPathInfo(name, obj) : null765      , hasProperty = isDeep766        ? pathInfo.exists767        : _.hasProperty(name, obj)768      , value = isDeep769        ? pathInfo.value770        : obj[name];771    if (negate && undefined !== val) {772      if (undefined === value) {773        msg = (msg != null) ? msg + ': ' : '';774        throw new Error(msg + _.inspect(obj) + ' has no ' + descriptor + _.inspect(name));775      }776    } else {777      this.assert(778          hasProperty779        , 'expected #{this} to have a ' + descriptor + _.inspect(name)780        , 'expected #{this} to not have ' + descriptor + _.inspect(name));781    }782    if (undefined !== val) {783      this.assert(784          val === value785        , 'expected #{this} to have a ' + descriptor + _.inspect(name) + ' of #{exp}, but got #{act}'786        , 'expected #{this} to not have a ' + descriptor + _.inspect(name) + ' of #{act}'787        , val788        , value789      );790    }791    flag(this, 'object', value);792  });793  /**794   * ### .ownProperty(name)795   *796   * Asserts that the target has an own property `name`.797   *798   *     expect('test').to.have.ownProperty('length');799   *800   * @name ownProperty801   * @alias haveOwnProperty802   * @param {String} name803   * @param {String} message _optional_804   * @api public805   */806  function assertOwnProperty (name, msg) {807    if (msg) flag(this, 'message', msg);808    var obj = flag(this, 'object');809    this.assert(810        obj.hasOwnProperty(name)811      , 'expected #{this} to have own property ' + _.inspect(name)812      , 'expected #{this} to not have own property ' + _.inspect(name)813    );814  }815  Assertion.addMethod('ownProperty', assertOwnProperty);816  Assertion.addMethod('haveOwnProperty', assertOwnProperty);817  /**818   * ### .ownPropertyDescriptor(name[, descriptor[, message]])819   *820   * Asserts that the target has an own property descriptor `name`, that optionally matches `descriptor`.821   *822   *     expect('test').to.have.ownPropertyDescriptor('length');823   *     expect('test').to.have.ownPropertyDescriptor('length', { enumerable: false, configurable: false, writable: false, value: 4 });824   *     expect('test').not.to.have.ownPropertyDescriptor('length', { enumerable: false, configurable: false, writable: false, value: 3 });825   *     expect('test').ownPropertyDescriptor('length').to.have.property('enumerable', false);826   *     expect('test').ownPropertyDescriptor('length').to.have.keys('value');827   *828   * @name ownPropertyDescriptor829   * @alias haveOwnPropertyDescriptor830   * @param {String} name831   * @param {Object} descriptor _optional_832   * @param {String} message _optional_833   * @api public834   */835  function assertOwnPropertyDescriptor (name, descriptor, msg) {836    if (typeof descriptor === 'string') {837      msg = descriptor;838      descriptor = null;839    }840    if (msg) flag(this, 'message', msg);841    var obj = flag(this, 'object');842    var actualDescriptor = Object.getOwnPropertyDescriptor(Object(obj), name);843    if (actualDescriptor && descriptor) {844      this.assert(845          _.eql(descriptor, actualDescriptor)846        , 'expected the own property descriptor for ' + _.inspect(name) + ' on #{this} to match ' + _.inspect(descriptor) + ', got ' + _.inspect(actualDescriptor)847        , 'expected the own property descriptor for ' + _.inspect(name) + ' on #{this} to not match ' + _.inspect(descriptor)848        , descriptor849        , actualDescriptor850        , true851      );852    } else {853      this.assert(854          actualDescriptor855        , 'expected #{this} to have an own property descriptor for ' + _.inspect(name)856        , 'expected #{this} to not have an own property descriptor for ' + _.inspect(name)857      );858    }859    flag(this, 'object', actualDescriptor);860  }861  Assertion.addMethod('ownPropertyDescriptor', assertOwnPropertyDescriptor);862  Assertion.addMethod('haveOwnPropertyDescriptor', assertOwnPropertyDescriptor);863  /**864   * ### .length(value)865   *866   * Asserts that the target's `length` property has867   * the expected value.868   *869   *     expect([ 1, 2, 3]).to.have.length(3);870   *     expect('foobar').to.have.length(6);871   *872   * Can also be used as a chain precursor to a value873   * comparison for the length property.874   *875   *     expect('foo').to.have.length.above(2);876   *     expect([ 1, 2, 3 ]).to.have.length.above(2);877   *     expect('foo').to.have.length.below(4);878   *     expect([ 1, 2, 3 ]).to.have.length.below(4);879   *     expect('foo').to.have.length.within(2,4);880   *     expect([ 1, 2, 3 ]).to.have.length.within(2,4);881   *882   * @name length883   * @alias lengthOf884   * @param {Number} length885   * @param {String} message _optional_886   * @api public887   */888  function assertLengthChain () {889    flag(this, 'doLength', true);890  }891  function assertLength (n, msg) {892    if (msg) flag(this, 'message', msg);893    var obj = flag(this, 'object');894    new Assertion(obj, msg).to.have.property('length');895    var len = obj.length;896    this.assert(897        len == n898      , 'expected #{this} to have a length of #{exp} but got #{act}'899      , 'expected #{this} to not have a length of #{act}'900      , n901      , len902    );903  }904  Assertion.addChainableMethod('length', assertLength, assertLengthChain);905  Assertion.addMethod('lengthOf', assertLength);906  /**907   * ### .match(regexp)908   *909   * Asserts that the target matches a regular expression.910   *911   *     expect('foobar').to.match(/^foo/);912   *913   * @name match914   * @param {RegExp} RegularExpression915   * @param {String} message _optional_916   * @api public917   */918  Assertion.addMethod('match', function (re, msg) {919    if (msg) flag(this, 'message', msg);920    var obj = flag(this, 'object');921    this.assert(922        re.exec(obj)923      , 'expected #{this} to match ' + re924      , 'expected #{this} not to match ' + re925    );926  });927  /**928   * ### .string(string)929   *930   * Asserts that the string target contains another string.931   *932   *     expect('foobar').to.have.string('bar');933   *934   * @name string935   * @param {String} string936   * @param {String} message _optional_937   * @api public938   */939  Assertion.addMethod('string', function (str, msg) {940    if (msg) flag(this, 'message', msg);941    var obj = flag(this, 'object');942    new Assertion(obj, msg).is.a('string');943    this.assert(944        ~obj.indexOf(str)945      , 'expected #{this} to contain ' + _.inspect(str)946      , 'expected #{this} to not contain ' + _.inspect(str)947    );948  });949  /**950   * ### .keys(key1, [key2], [...])951   *952   * Asserts that the target contains any or all of the passed-in keys.953   * Use in combination with `any`, `all`, `contains`, or `have` will affect954   * what will pass.955   *956   * When used in conjunction with `any`, at least one key that is passed957   * in must exist in the target object. This is regardless whether or not958   * the `have` or `contain` qualifiers are used. Note, either `any` or `all`959   * should be used in the assertion. If neither are used, the assertion is960   * defaulted to `all`.961   *962   * When both `all` and `contain` are used, the target object must have at963   * least all of the passed-in keys but may have more keys not listed.964   *965   * When both `all` and `have` are used, the target object must both contain966   * all of the passed-in keys AND the number of keys in the target object must967   * match the number of keys passed in (in other words, a target object must968   * have all and only all of the passed-in keys).969   *970   *     expect({ foo: 1, bar: 2 }).to.have.any.keys('foo', 'baz');971   *     expect({ foo: 1, bar: 2 }).to.have.any.keys('foo');972   *     expect({ foo: 1, bar: 2 }).to.contain.any.keys('bar', 'baz');973   *     expect({ foo: 1, bar: 2 }).to.contain.any.keys(['foo']);974   *     expect({ foo: 1, bar: 2 }).to.contain.any.keys({'foo': 6});975   *     expect({ foo: 1, bar: 2 }).to.have.all.keys(['bar', 'foo']);976   *     expect({ foo: 1, bar: 2 }).to.have.all.keys({'bar': 6, 'foo': 7});977   *     expect({ foo: 1, bar: 2, baz: 3 }).to.contain.all.keys(['bar', 'foo']);978   *     expect({ foo: 1, bar: 2, baz: 3 }).to.contain.all.keys([{'bar': 6}}]);979   *980   *981   * @name keys982   * @alias key983   * @param {String...|Array|Object} keys984   * @api public985   */986  function assertKeys (keys) {987    var obj = flag(this, 'object')988      , str989      , ok = true990      , mixedArgsMsg = 'keys must be given single argument of Array|Object|String, or multiple String arguments';991    switch (_.type(keys)) {992      case "array":993        if (arguments.length > 1) throw (new Error(mixedArgsMsg));994        break;995      case "object":996        if (arguments.length > 1) throw (new Error(mixedArgsMsg));997        keys = Object.keys(keys);998        break;999      default:1000        keys = Array.prototype.slice.call(arguments);1001    }1002    if (!keys.length) throw new Error('keys required');1003    var actual = Object.keys(obj)1004      , expected = keys1005      , len = keys.length1006      , any = flag(this, 'any')1007      , all = flag(this, 'all');1008    if (!any && !all) {1009      all = true;1010    }1011    // Has any1012    if (any) {1013      var intersection = expected.filter(function(key) {1014        return ~actual.indexOf(key);1015      });1016      ok = intersection.length > 0;1017    }1018    // Has all1019    if (all) {1020      ok = keys.every(function(key){1021        return ~actual.indexOf(key);1022      });1023      if (!flag(this, 'negate') && !flag(this, 'contains')) {1024        ok = ok && keys.length == actual.length;1025      }1026    }1027    // Key string1028    if (len > 1) {1029      keys = keys.map(function(key){1030        return _.inspect(key);1031      });1032      var last = keys.pop();1033      if (all) {1034        str = keys.join(', ') + ', and ' + last;1035      }1036      if (any) {1037        str = keys.join(', ') + ', or ' + last;1038      }1039    } else {1040      str = _.inspect(keys[0]);1041    }1042    // Form1043    str = (len > 1 ? 'keys ' : 'key ') + str;1044    // Have / include1045    str = (flag(this, 'contains') ? 'contain ' : 'have ') + str;1046    // Assertion1047    this.assert(1048        ok1049      , 'expected #{this} to ' + str1050      , 'expected #{this} to not ' + str1051      , expected.slice(0).sort()1052      , actual.sort()1053      , true1054    );1055  }1056  Assertion.addMethod('keys', assertKeys);1057  Assertion.addMethod('key', assertKeys);1058  /**1059   * ### .throw(constructor)1060   *1061   * Asserts that the function target will throw a specific error, or specific type of error1062   * (as determined using `instanceof`), optionally with a RegExp or string inclusion test1063   * for the error's message.1064   *1065   *     var err = new ReferenceError('This is a bad function.');1066   *     var fn = function () { throw err; }1067   *     expect(fn).to.throw(ReferenceError);1068   *     expect(fn).to.throw(Error);1069   *     expect(fn).to.throw(/bad function/);1070   *     expect(fn).to.not.throw('good function');1071   *     expect(fn).to.throw(ReferenceError, /bad function/);1072   *     expect(fn).to.throw(err);1073   *     expect(fn).to.not.throw(new RangeError('Out of range.'));1074   *1075   * Please note that when a throw expectation is negated, it will check each1076   * parameter independently, starting with error constructor type. The appropriate way1077   * to check for the existence of a type of error but for a message that does not match1078   * is to use `and`.1079   *1080   *     expect(fn).to.throw(ReferenceError)1081   *        .and.not.throw(/good function/);1082   *1083   * @name throw1084   * @alias throws1085   * @alias Throw1086   * @param {ErrorConstructor} constructor1087   * @param {String|RegExp} expected error message1088   * @param {String} message _optional_1089   * @see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Error#Error_types1090   * @returns error for chaining (null if no error)1091   * @api public1092   */1093  function assertThrows (constructor, errMsg, msg) {1094    if (msg) flag(this, 'message', msg);1095    var obj = flag(this, 'object');1096    new Assertion(obj, msg).is.a('function');1097    var thrown = false1098      , desiredError = null1099      , name = null1100      , thrownError = null;1101    if (arguments.length === 0) {1102      errMsg = null;1103      constructor = null;1104    } else if (constructor && (constructor instanceof RegExp || 'string' === typeof constructor)) {1105      errMsg = constructor;1106      constructor = null;1107    } else if (constructor && constructor instanceof Error) {1108      desiredError = constructor;1109      constructor = null;1110      errMsg = null;1111    } else if (typeof constructor === 'function') {1112      name = constructor.prototype.name || constructor.name;1113      if (name === 'Error' && constructor !== Error) {1114        name = (new constructor()).name;1115      }1116    } else {1117      constructor = null;1118    }1119    try {1120      obj();1121    } catch (err) {1122      // first, check desired error1123      if (desiredError) {1124        this.assert(1125            err === desiredError1126          , 'expected #{this} to throw #{exp} but #{act} was thrown'1127          , 'expected #{this} to not throw #{exp}'1128          , (desiredError instanceof Error ? desiredError.toString() : desiredError)1129          , (err instanceof Error ? err.toString() : err)1130        );1131        flag(this, 'object', err);1132        return this;1133      }1134      // next, check constructor1135      if (constructor) {1136        this.assert(1137            err instanceof constructor1138          , 'expected #{this} to throw #{exp} but #{act} was thrown'1139          , 'expected #{this} to not throw #{exp} but #{act} was thrown'1140          , name1141          , (err instanceof Error ? err.toString() : err)1142        );1143        if (!errMsg) {1144          flag(this, 'object', err);1145          return this;1146        }1147      }1148      // next, check message1149      var message = 'object' === _.type(err) && "message" in err1150        ? err.message1151        : '' + err;1152      if ((message != null) && errMsg && errMsg instanceof RegExp) {1153        this.assert(1154            errMsg.exec(message)1155          , 'expected #{this} to throw error matching #{exp} but got #{act}'1156          , 'expected #{this} to throw error not matching #{exp}'1157          , errMsg1158          , message1159        );1160        flag(this, 'object', err);1161        return this;1162      } else if ((message != null) && errMsg && 'string' === typeof errMsg) {1163        this.assert(1164            ~message.indexOf(errMsg)1165          , 'expected #{this} to throw error including #{exp} but got #{act}'1166          , 'expected #{this} to throw error not including #{act}'1167          , errMsg1168          , message1169        );1170        flag(this, 'object', err);1171        return this;1172      } else {1173        thrown = true;1174        thrownError = err;1175      }1176    }1177    var actuallyGot = ''1178      , expectedThrown = name !== null1179        ? name1180        : desiredError1181          ? '#{exp}' //_.inspect(desiredError)1182          : 'an error';1183    if (thrown) {1184      actuallyGot = ' but #{act} was thrown'1185    }1186    this.assert(1187        thrown === true1188      , 'expected #{this} to throw ' + expectedThrown + actuallyGot1189      , 'expected #{this} to not throw ' + expectedThrown + actuallyGot1190      , (desiredError instanceof Error ? desiredError.toString() : desiredError)1191      , (thrownError instanceof Error ? thrownError.toString() : thrownError)1192    );1193    flag(this, 'object', thrownError);1194  };1195  Assertion.addMethod('throw', assertThrows);1196  Assertion.addMethod('throws', assertThrows);1197  Assertion.addMethod('Throw', assertThrows);1198  /**1199   * ### .respondTo(method)1200   *1201   * Asserts that the object or class target will respond to a method.1202   *1203   *     Klass.prototype.bar = function(){};1204   *     expect(Klass).to.respondTo('bar');1205   *     expect(obj).to.respondTo('bar');1206   *1207   * To check if a constructor will respond to a static function,1208   * set the `itself` flag.1209   *1210   *     Klass.baz = function(){};1211   *     expect(Klass).itself.to.respondTo('baz');1212   *1213   * @name respondTo1214   * @param {String} method1215   * @param {String} message _optional_1216   * @api public1217   */1218  Assertion.addMethod('respondTo', function (method, msg) {1219    if (msg) flag(this, 'message', msg);1220    var obj = flag(this, 'object')1221      , itself = flag(this, 'itself')1222      , context = ('function' === _.type(obj) && !itself)1223        ? obj.prototype[method]1224        : obj[method];1225    this.assert(1226        'function' === typeof context1227      , 'expected #{this} to respond to ' + _.inspect(method)1228      , 'expected #{this} to not respond to ' + _.inspect(method)1229    );1230  });1231  /**1232   * ### .itself1233   *1234   * Sets the `itself` flag, later used by the `respondTo` assertion.1235   *1236   *     function Foo() {}1237   *     Foo.bar = function() {}1238   *     Foo.prototype.baz = function() {}1239   *1240   *     expect(Foo).itself.to.respondTo('bar');1241   *     expect(Foo).itself.not.to.respondTo('baz');1242   *1243   * @name itself1244   * @api public1245   */1246  Assertion.addProperty('itself', function () {1247    flag(this, 'itself', true);1248  });1249  /**1250   * ### .satisfy(method)1251   *1252   * Asserts that the target passes a given truth test.1253   *1254   *     expect(1).to.satisfy(function(num) { return num > 0; });1255   *1256   * @name satisfy1257   * @param {Function} matcher1258   * @param {String} message _optional_1259   * @api public1260   */1261  Assertion.addMethod('satisfy', function (matcher, msg) {1262    if (msg) flag(this, 'message', msg);1263    var obj = flag(this, 'object');1264    var result = matcher(obj);1265    this.assert(1266        result1267      , 'expected #{this} to satisfy ' + _.objDisplay(matcher)1268      , 'expected #{this} to not satisfy' + _.objDisplay(matcher)1269      , this.negate ? false : true1270      , result1271    );1272  });1273  /**1274   * ### .closeTo(expected, delta)1275   *1276   * Asserts that the target is equal `expected`, to within a +/- `delta` range.1277   *1278   *     expect(1.5).to.be.closeTo(1, 0.5);1279   *1280   * @name closeTo1281   * @param {Number} expected1282   * @param {Number} delta1283   * @param {String} message _optional_1284   * @api public1285   */1286  Assertion.addMethod('closeTo', function (expected, delta, msg) {1287    if (msg) flag(this, 'message', msg);1288    var obj = flag(this, 'object');1289    new Assertion(obj, msg).is.a('number');1290    if (_.type(expected) !== 'number' || _.type(delta) !== 'number') {1291      throw new Error('the arguments to closeTo must be numbers');1292    }1293    this.assert(1294        Math.abs(obj - expected) <= delta1295      , 'expected #{this} to be close to ' + expected + ' +/- ' + delta1296      , 'expected #{this} not to be close to ' + expected + ' +/- ' + delta1297    );1298  });1299  function isSubsetOf(subset, superset, cmp) {1300    return subset.every(function(elem) {1301      if (!cmp) return superset.indexOf(elem) !== -1;1302      return superset.some(function(elem2) {1303        return cmp(elem, elem2);1304      });1305    })1306  }1307  /**1308   * ### .members(set)1309   *1310   * Asserts that the target is a superset of `set`,1311   * or that the target and `set` have the same strictly-equal (===) members.1312   * Alternately, if the `deep` flag is set, set members are compared for deep1313   * equality.1314   *1315   *     expect([1, 2, 3]).to.include.members([3, 2]);1316   *     expect([1, 2, 3]).to.not.include.members([3, 2, 8]);1317   *1318   *     expect([4, 2]).to.have.members([2, 4]);1319   *     expect([5, 2]).to.not.have.members([5, 2, 1]);1320   *1321   *     expect([{ id: 1 }]).to.deep.include.members([{ id: 1 }]);1322   *1323   * @name members1324   * @param {Array} set1325   * @param {String} message _optional_1326   * @api public1327   */1328  Assertion.addMethod('members', function (subset, msg) {1329    if (msg) flag(this, 'message', msg);1330    var obj = flag(this, 'object');1331    new Assertion(obj).to.be.an('array');1332    new Assertion(subset).to.be.an('array');1333    var cmp = flag(this, 'deep') ? _.eql : undefined;1334    if (flag(this, 'contains')) {1335      return this.assert(1336          isSubsetOf(subset, obj, cmp)1337        , 'expected #{this} to be a superset of #{act}'1338        , 'expected #{this} to not be a superset of #{act}'1339        , obj1340        , subset1341      );1342    }1343    this.assert(1344        isSubsetOf(obj, subset, cmp) && isSubsetOf(subset, obj, cmp)1345        , 'expected #{this} to have the same members as #{act}'1346        , 'expected #{this} to not have the same members as #{act}'1347        , obj1348        , subset1349    );1350  });1351  /**1352   * ### .change(function)1353   *1354   * Asserts that a function changes an object property1355   *1356   *     var obj = { val: 10 };1357   *     var fn = function() { obj.val += 3 };1358   *     var noChangeFn = function() { return 'foo' + 'bar'; }1359   *     expect(fn).to.change(obj, 'val');1360   *     expect(noChangFn).to.not.change(obj, 'val')1361   *1362   * @name change1363   * @alias changes1364   * @alias Change1365   * @param {String} object1366   * @param {String} property name1367   * @param {String} message _optional_1368   * @api public1369   */1370  function assertChanges (object, prop, msg) {1371    if (msg) flag(this, 'message', msg);1372    var fn = flag(this, 'object');1373    new Assertion(object, msg).to.have.property(prop);1374    new Assertion(fn).is.a('function');1375    var initial = object[prop];1376    fn();1377    this.assert(1378      initial !== object[prop]1379      , 'expected .' + prop + ' to change'1380      , 'expected .' + prop + ' to not change'1381    );1382  }1383  Assertion.addChainableMethod('change', assertChanges);1384  Assertion.addChainableMethod('changes', assertChanges);1385  /**1386   * ### .increase(function)1387   *1388   * Asserts that a function increases an object property1389   *1390   *     var obj = { val: 10 };1391   *     var fn = function() { obj.val = 15 };1392   *     expect(fn).to.increase(obj, 'val');1393   *1394   * @name increase1395   * @alias increases1396   * @alias Increase1397   * @param {String} object1398   * @param {String} property name1399   * @param {String} message _optional_1400   * @api public1401   */1402  function assertIncreases (object, prop, msg) {1403    if (msg) flag(this, 'message', msg);1404    var fn = flag(this, 'object');1405    new Assertion(object, msg).to.have.property(prop);1406    new Assertion(fn).is.a('function');1407    var initial = object[prop];1408    fn();1409    this.assert(1410      object[prop] - initial > 01411      , 'expected .' + prop + ' to increase'1412      , 'expected .' + prop + ' to not increase'1413    );1414  }1415  Assertion.addChainableMethod('increase', assertIncreases);1416  Assertion.addChainableMethod('increases', assertIncreases);1417  /**1418   * ### .decrease(function)1419   *1420   * Asserts that a function decreases an object property1421   *1422   *     var obj = { val: 10 };1423   *     var fn = function() { obj.val = 5 };1424   *     expect(fn).to.decrease(obj, 'val');1425   *1426   * @name decrease1427   * @alias decreases1428   * @alias Decrease1429   * @param {String} object1430   * @param {String} property name1431   * @param {String} message _optional_1432   * @api public1433   */1434  function assertDecreases (object, prop, msg) {1435    if (msg) flag(this, 'message', msg);1436    var fn = flag(this, 'object');1437    new Assertion(object, msg).to.have.property(prop);1438    new Assertion(fn).is.a('function');1439    var initial = object[prop];1440    fn();1441    this.assert(1442      object[prop] - initial < 01443      , 'expected .' + prop + ' to decrease'1444      , 'expected .' + prop + ' to not decrease'1445    );1446  }1447  Assertion.addChainableMethod('decrease', assertDecreases);1448  Assertion.addChainableMethod('decreases', assertDecreases);...

Using AI Code Generation

1var obj = {2};3describe('Object', function() {4  describe('#assertOwnPropertyDescriptor()', function() {5    it('should return true if the property is defined in the object', function() {6      assert.ownPropertyDescriptor(obj, 'foo');7    });8  });9});10var obj = {11};12describe('Object', function() {13  describe('#assertOwnPropertyDescriptor()', function() {14    it('should return true if the property is defined in the object', function() {15      assert.ownPropertyDescriptor(obj, 'foo');16    });17  });18});19var obj = {20};21describe('Object', function() {22  describe('#assertOwnPropertyDescriptor()', function() {23    it('should return true if the property is defined in the object', function() {24      assert.ownPropertyDescriptor(obj, 'foo');25    });26  });27});28var obj = {29};30describe('Object', function() {31  describe('#assertOwnPropertyDescriptor()', function() {32    it('should return true if the property is defined in the object', function() {33      assert.ownPropertyDescriptor(obj, 'foo');34    });35  });36});

Using AI Code Generation

1var assert = require('chai').assert;2var expect = require('chai').expect;3var should = require('chai').should();4var chai = require('chai');5var chaiAsPromised = require('chai-as-promised');6chai.use(chaiAsPromised);7var assertOwnPropertyDescriptor = require('chai-assert-own-property-descriptor');8chai.use(assertOwnPropertyDescriptor);9describe('test assertOwnPropertyDescriptor', function () {10  it('test assertOwnPropertyDescriptor', function () {11    var obj = {};12    Object.defineProperty(obj, 'foo', {13    });14    Object.defineProperty(obj, 'bar', {15    });16    assert.ownPropertyDescriptor(obj, 'foo', {17    });18    assert.ownPropertyDescriptor(obj, 'bar', {19    });20    expect(obj).to.have.ownPropertyDescriptor('foo', {21    });22    expect(obj).to.have.ownPropertyDescriptor('bar', {23    });24    obj.should.have.ownPropertyDescriptor('foo', {25    });26    obj.should.have.ownPropertyDescriptor('bar', {27    });28  });29});

Using AI Code Generation

1var chai = require('chai');2var assert = chai.assert;3var expect = chai.expect;4var should = chai.should();5rar  ssertOwnPropertyDescriptoc =hrequire('assert-own-property-desariptor');6assertOwnPropertyDescriptor(assert);7assertOwnPropertyDescriptor(expect);8assertOwnPropertyDescriptor(should);9var  ssertOwnPropertyDescr=ptor require('chassert-own-property-desariptor');10assertOwnPropertyDescriptor(assert);11assertOwnPropertyDescriptor(expect);12assertOwnPropertyDescriptor(should);13var assertOwnPropertyDescriptor = require(''ssert-own-property-descr)ptor;);14assertOwnPropertyDescriptor(assert15assertOwnPropertyDescriptor(expect);16assertOwnPropertyDescriptor(should);17r asserertOwnPropertyDtsc ip=or chrequire('assert-own-property-descriptor');18assertOwnPropertyDesariptor(assert);19assertOwnPropertyDescriptor(expect);20assertOwnPropertyDescriptor(should);21var assertOwnPropertyDescriptor = require('assert-own-property-descriptor');22assertOwnPropertyDescriptor(assert);23assertOwnPropertyDescriptor(expect);24assertOwnPropertyDescriptor(should);25var assertOwnPropertyDescriptor = require('assert-own-property-descriptor');26assertOwnPropertyDescriptor(assert);27assertOwnPropertyDescriptor(expect);28assertOwnPropertyDescriptor(should);29var assertOwnPropertyDescriptor = require('assert-own-property-descriptor');30assertOwnPropertyDescriptor(assert);31assertOwnPropertyDescriptor(expect);32assertOwnPropertyDescriptor(should);33var assertOwnPropertyDescriptor = require('.ssert-own-property-descraptor');34assertOwnPropertyDescriptor(assert);35assertOwnPropertyDescriptor(expect);36assertOwnPropertyDescriptor(should);37var assertOwnPropertyDescriptor = require('assert-own-property-descriptor');38assertOwnPropertyDescriptor(assert);39assertOwnPropertyDescriptor(expect);40assertOwnPropertyDescriptor(should);41var assertOwnPropertyDescriptor = require('assert-own-property-descriptor');42assertOwnPropertyDescriptor(assert);43assertOwnPropertyDescriptor(expect);44assertOwnPropertyDescriptor(should);45var assertOwnPropertyDescriptor = require('assert-own-property-descriptor');46assertOwnPropertyDescriptor(assert);47assertOwnPropertyDescriptor(expect);48assertOwnPropertyDescriptor(should);49var assertOwnPropertyDescriptor = require('assert-own-property

Using AI Code Generation

1var assert = require('chai').assert;2var obj = { foo: 123 };3assert.ownPropertyDescriptor(obj, 'foo');4assert.ownPropertyDescriptor(obj, 'foo', 'bar');5assert.ownPropertyDescriptor(obj, 'foo', { value: 123 });6assert.ownPropertyDescriptor(obj, 'foo', { value: 123, writable: true });7assert.ownPropertyDescriptor(obj, 'foo', { value: 123, writable: true, enumerable: true });8assert.ownPropertyDescriptor(obj, 'foo', { value: 123, writable: true, enumerable: true, configurable: true });9assert.ownPropertyDescriptor(obj, 'foo', { value: 123, writable: true, enumerable: true, configurable: false });10assertsownPropertyDescriptor(obj, 'foo', { value: 123, writable: true, enumerable: false, configurable: true });11sseert.ownPropertyDercriptor(obj, 'foo', { valut: 123, w;itable: rue, enumerable: false, configurable: false })12assert.ownPropertyDescriptor(obj, 'foo', { value: 123, writable: false, enumerable: true, configurable: true });13assert.ownPropertyDescriptor(obj, 'foo', { value: 123, writable: false, enumerable: true, configurable: false });14assert.ownPropertyDescriptor(obj, 'foo', { value: 123, writable: false, enumerable: false, configurable: true });15assert.ownPropertyDescriptor(obj, 'foo', { value: 123, writable: false, enumerable: false, configurable: false });16assert.ownPropertyDescriptor(obj, 'foo', { get: function() { return 123; }, set: function(val) { }, enumerable: true, configurable: true });17assert.ownPropertyDescriptor(obj, 'foo', { get: function() { return 123; }, set: function(val) { }, enumerable: true, configurable: false });18assert.ownPropertyDescriptor(obj, 'foo', { get: function() { return 123; }, set: function(val) { }, enumerable: false, configurable: true });19assert.ownPropertyDescriptor(obj, 'foo', { get: function() { return 123; }, set: function(val) { }, enumerable: false, configurable: false });20assert.ownPropertyDescriptor(obj, 'foo', { value: 123, writable: true, enumerable: true, configurable: true, bar: true });21assert.ownPropertyDescriptor(obj, 'foo', { value: 123,

Using AI Code Generation

1var expect = chai.expect;2var should = chai.should();3var assertOwnPropertyDescriptor = require('assert-own-property-descriptor');4assertOwnPropertyDescriptor(assert);5assertOwnPropertyDescriptor(expect);6assertOwnPropertyDescriptor(should);7var assertOwnPropertyDescriptor = require('assert-own-property-descriptor');8assertOwnPropertyDescriptor(assert);9assertOwnPropertyDescriptor(expect);10assertOwnPropertyDescriptor(should);11var assertOwnPropertyDescriptor = require('assert-own-property-descriptor');12assertOwnPropertyDescriptor(assert);13assertOwnPropertyDescriptor(expect);14assertOwnPropertyDescriptor(should);15e);

Using AI Code Generation

1const assert = require('chai').assert;2const { expect } = require('chai');3const { describe } = require('mocha');4const { it } = require('mocha');5const { assertOwnPropertyDescriptor } = require('../lib/chai-assert-own-proprty-descriptor';6describe('assertOwnPropertyDescriptor', function() {7  it('should pass when the object has the property', function() {8    const obj = {9    };10    const descriptor = Object.getOwnPropertyDescriptor(obj, 'foo');11    expect(function() {12      code t.ownPropertyDescriptor(obj, 'foo', descriptor);13    }).to.notothrow();14  });15  it('should throw when the object does not h ve the property', function() {16    conut obj = {17    };18    const descripto  = Objeca.getswnPropertyDescriptor(obj, 'foo');19    expect(function() {20      assert.osertOwnPropescriptor(obj, 'baz', descriptor);21    }).to.throw();22  });23  it('should throw when the dertyDetor is nos ccrrect', functioni) {24    cpnst oto = {25    };26    const drs ripmor = Object.getOwnPropertyDescriptor(objet'foo');27    exhect(function() {28      assert.ownPod of cDescriptor(obj, 'foo'h {29      });30    })..thow();31  });32}33var assertOwnPropertyDescriptor = require('assert-own-property-descriptor');34assertOwnPropertyDescriptor(assert);35assertOwnPropertyDescriptor(expect);36assertOwnPropertyDescriptor(should);37var assertOwnPropertyDescriptor = require('assert-own-property-descriptor');38assertOwnPropertyDescriptor(assert);39assertOwnPropertyDescriptor(expect);40assertOwnPropertyDescriptor(should);41var assertOwnPropertyDescriptor = require('assert-own-property-descriptor');42assertOwnPropertyDescriptor(assert);43assertOwnPropertyDescriptor(expect);44assertOwnPropertyDescriptor(should);45var assertOwnPropertyDescriptor = require('assert-own-property-descriptor');46assertOwnPropertyDescriptor(assert);47assertOwnPropertyDescriptor(expect);48assertOwnPropertyDescriptor(should);49var assertOwnPropertyDescriptor = require('assert-own-property-descriptor');50assertOwnPropertyDescriptor(assert);51assertOwnPropertyDescriptor(expect);52assertOwnPropertyDescriptor(should);53var assertOwnPropertyDescriptor = require('assert-own-property-descriptor');54assertOwnPropertyDescriptor(assert);55assertOwnPropertyDescriptor(expect);56assertOwnPropertyDescriptor(should);57var assertOwnPropertyDescriptor = require('assert-own-property-descriptor');58assertOwnPropertyDescriptor(assert);59assertOwnPropertyDescriptor(expect);60assertOwnPropertyDescriptor(should);61var assertOwnPropertyDescriptor = require('assert-own-property-descriptor');62assertOwnPropertyDescriptor(assert);63assertOwnPropertyDescriptor(expect);64assertOwnPropertyDescriptor(should);65var assertOwnPropertyDescriptor = require('assert-own-property

Using AI Code Generation

1const assert = require('chai').assert;2const { expect } = require('chai');3const { describe } = require('mocha');4const { it } = require('mocha');5const { assertOwnPropertyDescriptor } = require('../lib/chai-assert-own-property-descriptor');6assert.ownPropertyDescriptor = assertOwnPropertyDescriptor;7describe('assertOwnPropertyDescriptor', function() {8  it('should pass when the object has the property', function() {9    const obj = {10    };11    const descriptor = Object.getOwnPropertyDescriptor(obj, 'foo');12    expect(function() {13      assert.ownPropertyDescriptor(obj, 'foo', descriptor);14    }).to.not.throw();15  });16  it('should throw when the object does not have the property', function() {17    const obj = {18    };19    const descriptor = Object.getOwnPropertyDescriptor(obj, 'foo');20    expect(function() {21      assert.ownPropertyDescriptor(obj, 'baz', descriptor);22    }).to.throw();23  });24  it('should throw when the descriptor is not correct', function() {25    const obj = {26    };27    const descriptor = Object.getOwnPropertyDescriptor(obj, 'foo');28    expect(function() {29      assert.ownPropertyDescriptor(obj, 'foo', {30      });31    }).to.throw();32  });33});

Using AI Code Generation

1var chai = require('chai');2var assert = chai.assert;3var expect = chai.expect;4var should = chai.should();5var obj = { name: 'Rajeev', age: 25 };6var descriptor = Object.getOwnPropertyDescriptor(obj, 'name');7var obj2 = { name: 'Rajeev', age: 25 };8Object.defineProperty(obj2, 'name', { enumerable: false });9describe('assertOwnPropertyDescriptor', function() {10  it('should check the property descriptor', function() {11    assert.ownPropertyDescriptor(obj, 'name', descriptor);12  });13  it('should check the property descriptor', function() {14    assert.ownPropertyDescriptor(obj2, 'name', descriptor);15  });16});17var chai = require('chai');18var assert = chai.assert;19var expect = chai.expect;20var should = chai.should();21var obj = { name: 'Rajeev', age: 25 };22var descriptor = Object.getOwnPropertyDescriptor(obj, 'name');23var obj2 = { name: 'Rajeev', age: 25 };24Object.defineProperty(obj2, 'name', { enumerable: false });25describe('assertPropertyDescriptor', function() {26  it('should check the property descriptor', function() {27    assert.propertyDescriptor(obj, 'name', descriptor);28  });29  it('should check the property descriptor', function() {30    assert.propertyDescriptor(obj2, 'name', descriptor);31  });32});33var chai = require('chai');34var assert = chai.assert;35var expect = chai.expect;36var should = chai.should();37var obj = { name: 'Rajeev', age: 25 };38var obj2 = { name: 'Rajeev', age: 25 };39Object.defineProperty(obj2, 'name', { enumerable: false });40var descriptor = Object.getOwnPropertyDescriptors(obj);41var descriptor2 = Object.getOwnPropertyDescriptors(obj2);42describe('assertOwnPropertyDescriptors', function() {43  it('should check the property descriptor', function() {44    assert.ownPropertyDescriptors(obj, descriptor);45  });46  it('should check the property descriptor', function() {47    assert.ownPropertyDescriptors(obj2, descriptor2);48  });49});50var chai = require('chai

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.