How to use setPrototypeOf method in unexpected

Best JavaScript code snippet using unexpected

setPrototypeOf.js

Source:setPrototypeOf.js Github

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...30p = rev.proxy;31var originalProto = Reflect.getPrototypeOf(p);32assertEq(originalProto, Object.prototype);33rev.revoke();34assertThrowsInstanceOf(() => Reflect.setPrototypeOf(p, originalProto),35 TypeError);36assertThrowsInstanceOf(() => Reflect.setPrototypeOf(p, null),37 TypeError);38// 6. Let trap be ? GetMethod(handler, "setPrototypeOf").39// handler has uncallable (and not null/undefined) property40p = new Proxy({}, { setPrototypeOf: 9 });41assertThrowsInstanceOf(() => Reflect.setPrototypeOf(p, null),42 TypeError);43p = new Proxy({}, { setPrototypeOf: -3.7 });44assertThrowsInstanceOf(() => Reflect.setPrototypeOf(p, null),45 TypeError);46p = new Proxy({}, { setPrototypeOf: NaN });47assertThrowsInstanceOf(() => Reflect.setPrototypeOf(p, null),48 TypeError);49p = new Proxy({}, { setPrototypeOf: Infinity });50assertThrowsInstanceOf(() => Reflect.setPrototypeOf(p, null),51 TypeError);52p = new Proxy({}, { setPrototypeOf: true });53assertThrowsInstanceOf(() => Reflect.setPrototypeOf(p, null),54 TypeError);55p = new Proxy({}, { setPrototypeOf: /x/ });56assertThrowsInstanceOf(() => Reflect.setPrototypeOf(p, null),57 TypeError);58p = new Proxy({}, { setPrototypeOf: Symbol(42) });59assertThrowsInstanceOf(() => Reflect.setPrototypeOf(p, null),60 TypeError);61p = new Proxy({}, { setPrototypeOf: class X {} });62assertThrowsInstanceOf(() => Reflect.setPrototypeOf(p, null),63 TypeError);64p = new Proxy({}, observe({}));65assertEq(Reflect.setPrototypeOf(p, Object.prototype), true);66assertEq(log.length, 1);67assertEq(log[0], "get");68h = observe({ setPrototypeOf() { throw 3.14; } });69p = new Proxy(Object.create(Object.prototype), h);70// "setting" without change71log.length = 0;72assertThrowsValue(() => Reflect.setPrototypeOf(p, Object.prototype),73 3.14);74assertEq(log.length, 1);75assertEq(log[0], "get");76// "setting" with change77log.length = 0;78assertThrowsValue(() => Reflect.setPrototypeOf(p, /foo/),79 3.14);80assertEq(log.length, 1);81assertEq(log[0], "get");82// 7. If trap is undefined, then83// a. Return ? target.[[SetPrototypeOf]](V).84var settingProtoThrows =85 new Proxy({}, { setPrototypeOf() { throw "agnizes"; } });86p = new Proxy(settingProtoThrows, { setPrototypeOf: undefined });87assertThrowsValue(() => Reflect.setPrototypeOf(p, null),88 "agnizes");89p = new Proxy(settingProtoThrows, { setPrototypeOf: null });90assertThrowsValue(() => Reflect.setPrototypeOf(p, null),91 "agnizes");92var anotherProto =93 new Proxy({},94 { setPrototypeOf(t, p) {95 log.push("reached");96 return Reflect.setPrototypeOf(t, p);97 } });98p = new Proxy(anotherProto, { setPrototypeOf: undefined });99log.length = 0;100assertEq(Reflect.setPrototypeOf(p, null), true);101assertEq(log.length, 1);102assertEq(log[0], "reached");103p = new Proxy(anotherProto, { setPrototypeOf: null });104log.length = 0;105assertEq(Reflect.setPrototypeOf(p, null), true);106assertEq(log.length, 1);107assertEq(log[0], "reached");108// 8. Let booleanTrapResult be ToBoolean(? Call(trap, handler, « target, V »)).109// The trap callable might throw.110p = new Proxy({}, { setPrototypeOf() { throw "ohai"; } });111assertThrowsValue(() => Reflect.setPrototypeOf(p, /x/),112 "ohai");113var throwingTrap =114 new Proxy(function() { throw "not called"; },115 { apply() { throw 37; } });116p = new Proxy({}, { setPrototypeOf: throwingTrap });117assertThrowsValue(() => Reflect.setPrototypeOf(p, Object.prototype),118 37);119// The trap callable must *only* be called.120p = new Proxy({},121 {122 setPrototypeOf: observe(function() { throw "boo-urns"; })123 });124log.length = 0;125assertThrowsValue(() => Reflect.setPrototypeOf(p, Object.prototype),126 "boo-urns");127assertEq(log.length, 1);128assertEq(log[0], "apply");129// 9. If booleanTrapResult is false, return false.130p = new Proxy({}, { setPrototypeOf() { return false; } });131assertEq(Reflect.setPrototypeOf(p, Object.prototype), false);132p = new Proxy({}, { setPrototypeOf() { return +0; } });133assertEq(Reflect.setPrototypeOf(p, Object.prototype), false);134p = new Proxy({}, { setPrototypeOf() { return -0; } });135assertEq(Reflect.setPrototypeOf(p, Object.prototype), false);136p = new Proxy({}, { setPrototypeOf() { return NaN; } });137assertEq(Reflect.setPrototypeOf(p, Object.prototype), false);138p = new Proxy({}, { setPrototypeOf() { return ""; } });139assertEq(Reflect.setPrototypeOf(p, Object.prototype), false);140p = new Proxy({}, { setPrototypeOf() { return undefined; } });141assertEq(Reflect.setPrototypeOf(p, Object.prototype), false);142// 10. Let extensibleTarget be ? IsExtensible(target).143var targetThrowIsExtensible =144 new Proxy({}, { isExtensible() { throw "psych!"; } });145p = new Proxy(targetThrowIsExtensible, { setPrototypeOf() { return true; } });146assertThrowsValue(() => Reflect.setPrototypeOf(p, Object.prototype),147 "psych!");148// 11. If extensibleTarget is true, return true.149var targ = {};150p = new Proxy(targ, { setPrototypeOf() { return true; } });151assertEq(Reflect.setPrototypeOf(p, /x/), true);152assertEq(Reflect.getPrototypeOf(targ), Object.prototype);153assertEq(Reflect.getPrototypeOf(p), Object.prototype);154p = new Proxy(targ, { setPrototypeOf() { return /x/; } });155assertEq(Reflect.setPrototypeOf(p, /x/), true);156assertEq(Reflect.getPrototypeOf(targ), Object.prototype);157assertEq(Reflect.getPrototypeOf(p), Object.prototype);158p = new Proxy(targ, { setPrototypeOf() { return Infinity; } });159assertEq(Reflect.setPrototypeOf(p, /x/), true);160assertEq(Reflect.getPrototypeOf(targ), Object.prototype);161assertEq(Reflect.getPrototypeOf(p), Object.prototype);162p = new Proxy(targ, { setPrototypeOf() { return Symbol(true); } });163assertEq(Reflect.setPrototypeOf(p, /x/), true);164assertEq(Reflect.getPrototypeOf(targ), Object.prototype);165assertEq(Reflect.getPrototypeOf(p), Object.prototype);166// 12. Let targetProto be ? target.[[GetPrototypeOf]]().167var targetNotExtensibleGetProtoThrows =168 new Proxy(Object.preventExtensions({}),169 { getPrototypeOf() { throw NaN; } });170p = new Proxy(targetNotExtensibleGetProtoThrows,171 { setPrototypeOf() { log.push("goober"); return true; } });172log.length = 0;173assertThrowsValue(() => Reflect.setPrototypeOf(p, /abcd/),174 NaN);175// 13. If SameValue(V, targetProto) is false, throw a TypeError exception.176var newProto;177p = new Proxy(Object.preventExtensions(Object.create(Math)),178 { setPrototypeOf(t, p) { return true; } });179assertThrowsInstanceOf(() => Reflect.setPrototypeOf(p, null),180 TypeError);181// 14. Return true.182assertEq(Reflect.setPrototypeOf(p, Math), true);183/******************************************************************************/184if (typeof reportCompare === "function")185 reportCompare(true, true);...

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proxies-set-prototype-of.js

Source:proxies-set-prototype-of.js Github

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...5target.__proto__ = {};6var handler = { handler: 1 };7var proxy = new Proxy(target, handler);8assertSame(Object.getPrototypeOf(proxy), target.__proto__ );9assertThrows(function() { Object.setPrototypeOf(proxy, undefined) }, TypeError);10assertThrows(function() { Object.setPrototypeOf(proxy, 1) }, TypeError);11var prototype = [1];12assertSame(proxy, Object.setPrototypeOf(proxy, prototype));13assertSame(prototype, Object.getPrototypeOf(proxy));14assertSame(prototype, Object.getPrototypeOf(target));15var pair = Proxy.revocable(target, handler);16assertSame(pair.proxy, Object.setPrototypeOf(pair.proxy, prototype));17assertSame(prototype, Object.getPrototypeOf(pair.proxy));18pair.revoke();19assertThrows('Object.setPrototypeOf(pair.proxy, prototype)', TypeError);20handler.setPrototypeOf = function(target, proto) {21 return false;22};23assertThrows(function() { Object.setPrototypeOf(proxy, {a:1}) }, TypeError);24handler.setPrototypeOf = function(target, proto) {25 return undefined;26};27assertThrows(function() { Object.setPrototypeOf(proxy, {a:2}) }, TypeError);28handler.setPrototypeOf = function(proto) {};29assertThrows(function() { Object.setPrototypeOf(proxy, {a:3}) }, TypeError);30handler.setPrototypeOf = function(target, proto) {31 throw Error();32};33assertThrows(function() { Object.setPrototypeOf(proxy, {a:4}) }, Error);34var seen_prototype;35var seen_target;36handler.setPrototypeOf = function(target, proto) {37 seen_target = target;38 seen_prototype = proto;39 return true;40}41assertSame(Object.setPrototypeOf(proxy, {a:5}), proxy);42assertSame(target, seen_target);43assertEquals({a:5}, seen_prototype);44(function setPrototypeProxyTarget() {45 var target = { target: 1 };46 target.__proto__ = {};47 var handler = {};48 var handler2 = {};49 var target2 = new Proxy(target, handler2);50 var proxy2 = new Proxy(target2, handler);51 assertSame(Object.getPrototypeOf(proxy2), target.__proto__ );52 var prototype = [2,3];53 assertSame(proxy2, Object.setPrototypeOf(proxy2, prototype));54 assertSame(prototype, Object.getPrototypeOf(proxy2));55 assertSame(prototype, Object.getPrototypeOf(target));56})();57(function testProxyTrapInconsistent() {58 var target = { target: 1 };59 target.__proto__ = {};60 var handler = {};61 var handler2 = {62 };63 var target2 = new Proxy(target, handler);64 var proxy2 = new Proxy(target2, handler2);65 // If the final target is extensible we can set any prototype.66 var prototype = [1];67 Reflect.setPrototypeOf(proxy2, prototype);68 assertSame(prototype, Reflect.getPrototypeOf(target));69 handler2.setPrototypeOf = function(target, value) {70 Reflect.setPrototypeOf(target, value);71 return true;72 };73 prototype = [2];74 Reflect.setPrototypeOf(proxy2, prototype);75 assertSame(prototype, Reflect.getPrototypeOf(target));76 // Prevent getting the target's prototype used to check the invariant.77 var gotPrototype = false;78 handler.getPrototypeOf = function() {79 gotPrototype = true;80 throw TypeError()81 };82 // If the target is extensible we do not check the invariant.83 prototype = [3];84 Reflect.setPrototypeOf(proxy2, prototype);85 assertFalse(gotPrototype);86 assertSame(prototype, Reflect.getPrototypeOf(target));87 // Changing the prototype of a non-extensible target will trigger the88 // invariant-check and throw in the above handler.89 Reflect.preventExtensions(target);90 assertThrows(() => {Reflect.setPrototypeOf(proxy2, [4])}, TypeError);91 assertTrue(gotPrototype);92 assertEquals([3], Reflect.getPrototypeOf(target));93 // Setting the prototype of a non-extensible target is fine if the prototype94 // doesn't change.95 delete handler.getPrototypeOf;96 Reflect.setPrototypeOf(proxy2, prototype);97 // Changing the prototype will throw.98 prototype = [5];99 assertThrows(() => {Reflect.setPrototypeOf(proxy2, prototype)}, TypeError);100})();101(function testProxyTrapReturnsFalse() {102 var handler = {};103 handler.setPrototypeOf = () => false;104 var target = new Proxy({}, {isExtensible: () => assertUnreachable()});105 var object = new Proxy(target, handler);106 assertFalse(Reflect.setPrototypeOf(object, {}));...

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Using AI Code Generation

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1const unexpected = require('unexpected');2const unexpectedReact = require('unexpected-react');3const unexpectedSinon = require('unexpected-sinon');4const unexpectedImmutable = require('unexpected-immutable');5const unexpectedDom = require('unexpected-dom');6const unexpectedRedux = require('unexpected-redux');7const unexpectedInstance = unexpected.clone();8unexpectedInstance.use(unexpectedReact);9unexpectedInstance.use(unexpectedSinon);10unexpectedInstance.use(unexpectedImmutable);11unexpectedInstance.use(unexpectedDom);12unexpectedInstance.use(unexpectedRedux);13unexpectedInstance.output.preferredWidth = 120;14module.exports = unexpectedInstance;15const expect = require('./test');16describe('Test', () => {17 it('should pass', () => {18 expect(1, 'to equal', 1);19 });20});21 at Object.<anonymous> (/Users/username/Projects/projectname/test.js:8:12)22 at Module._compile (internal/modules/cjs/loader.js:1138:30)23 at Object.Module._extensions..js (internal/modules/cjs/loader.js:1158:10)24 at Module.load (internal/modules/cjs/loader.js:986:32)25 at Function.Module._load (internal/modules/cjs/loader.js:879:14)26 at Module.require (internal/modules/cjs/loader.js:1026:19)27 at require (internal/modules/cjs/helpers.js:72:18)28 at Object.<anonymous> (/Users/username/Projects/projectname/test.spec.js:1:16)29 at Module._compile (internal/modules/cjs/loader.js:1138:30)30 at Object.Module._extensions..js (internal/modules/cjs/loader.js:1158:10)31 at Module.load (internal/modules/cjs/loader.js:986:32)32 at Function.Module._load (internal/modules/cjs/loader.js:879:14)33 at Module.require (internal/modules/cjs/loader.js:1026:19)34 at require (internal/modules/cjs/helpers.js:72:18)35 at Array.forEach (<anonymous>)36 at Mocha.loadFiles (/Users/username/Projects/project

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1var unexpected = require('unexpected');2var unexpectedSinon = require('unexpected-sinon');3var sinon = require('sinon');4var expect = unexpected.clone().use(unexpectedSinon);5var obj = {};6var spy = sinon.spy();7Object.setPrototypeOf(obj, spy);8expect(obj, 'to have a call count of', 0);9expect(obj, 'was not called');10expect(obj, 'was not called with', 'foo');11expect(obj, 'was not called with', 'foo', 'bar');12expect(obj, 'was not called with', 'foo', 'bar', 'baz');13expect(obj, 'was not called with match', 'foo');14expect(obj, 'was not called with match', 'foo', 'bar');15expect(obj, 'was not called with match', 'foo', 'bar', 'baz');16expect(obj, 'was not called with exact args', 'foo');17expect(obj, 'was not called with exact args', 'foo', 'bar');18expect(obj, 'was not called with exact args', 'foo', 'bar', 'baz');19expect(obj, 'was not called with new');20expect(obj, 'was not called with new', 'foo');21expect(obj, 'was not called with new', 'foo', 'bar');22expect(obj, 'was not called with new', 'foo', 'bar', 'baz');23expect(obj, 'was not called with new match', 'foo');24expect(obj, 'was not called with new match', 'foo', 'bar');25expect(obj, 'was not called with new match', 'foo', 'bar', 'baz');26expect(obj, 'was not called with new exact args', 'foo');27expect(obj, 'was not called with new exact args', 'foo', 'bar');28expect(obj, 'was not called with new exact args', 'foo', 'bar', 'baz');

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Using AI Code Generation

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1var unexpected = require('unexpected');2var unexpectedReact = require('unexpected-react');3var unexpectedSinon = require('unexpected-sinon');4var unexpectedImmutable = require('unexpected-immutable');5var unexpectedInstance = unexpected.clone()6 .use(unexpectedReact)7 .use(unexpectedSinon)8 .use(unexpectedImmutable);9module.exports = unexpectedInstance;10var React = require('react');11var TestUtils = require('react-addons-test-utils');12var expect = require('./test').clone();13var Button = require('../src/components/Button');14describe('Button', function () {15 it('should render a button', function () {16 var component = TestUtils.renderIntoDocument(17 );18 expect(component, 'to have rendered',19 );20 });21});22var React = require('react');23var TestUtils = require('react-addons-test-utils');24var expect = require('./test').clone();25var Button = require('../src/components/Button');26var Immutable = require('immutable');27describe('Button', function () {28 it('should render a button', function () {29 var component = TestUtils.renderIntoDocument(30 );31 expect(component, 'to have rendered',32 );33 });34 it('should render a button with class', function () {35 var component = TestUtils.renderIntoDocument(36 );37 expect(component, 'to have rendered',38 );39 });40 it('should render a button with text', function () {41 var component = TestUtils.renderIntoDocument(42 );43 expect(component, 'to have rendered',44 );45 });46 it('should render a button with children', function () {47 var component = TestUtils.renderIntoDocument(48 );49 expect(component, 'to have rendered',50 );51 });52 it('should render a button with children and props', function () {

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1const obj = {};2Object.setPrototypeOf(obj, { x: 1 });3const obj = {};4Object.setPrototypeOf(obj, { x: 1 });5const obj = {};6Object.setPrototypeOf(obj, { x: 1 });7const obj = {};8Object.setPrototypeOf(obj, { x: 1 });9const obj = {};10Object.setPrototypeOf(obj, { x: 1 });11const obj = {};12Object.setPrototypeOf(obj, { x: 1 });13const obj = {};14Object.setPrototypeOf(obj, { x: 1 });15const obj = {};16Object.setPrototypeOf(obj, { x: 1 });17const obj = {};18Object.setPrototypeOf(obj, { x: 1 });19const obj = {};20Object.setPrototypeOf(obj, { x: 1 });21const obj = {};22Object.setPrototypeOf(obj, { x: 1 });23const obj = {};24Object.setPrototypeOf(obj, { x: 1 });25const obj = {};26Object.setPrototypeOf(obj, { x: 1 });27const obj = {};28Object.setPrototypeOf(obj, { x: 1 });29console.log(obj.x);

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Using AI Code Generation

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1var obj = {a:1};2var obj2 = Object.setPrototypeOf(obj, {b:2});3var obj = {a:1};4var obj2 = Object.setPrototypeOf(obj, {b:2});5var obj = {a:1};6var obj2 = Object.setPrototypeOf(obj, {b:2});7var obj = {a:1};8var obj2 = Object.setPrototypeOf(obj, {b:2});9var obj = {a:1};10var obj2 = Object.setPrototypeOf(obj, {b:2});11var obj = {a:1};12var obj2 = Object.setPrototypeOf(obj, {b:2});13var obj = {a:1};14var obj2 = Object.setPrototypeOf(obj, {b:2});15var obj = {a:1};16var obj2 = Object.setPrototypeOf(obj, {b:2});17var obj = {a:1};18var obj2 = Object.setPrototypeOf(obj, {b:2});19var obj = {a:1};20var obj2 = Object.setPrototypeOf(obj, {b:2});

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Using AI Code Generation

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1var obj = { a: 1 };2var obj2 = Object.setPrototypeOf({ b: 2 }, obj);3obj2.a = 3;4var obj = { a: 1 };5var obj2 = Object.setPrototypeOf({ b: 2 }, obj);6var obj = { a: 1 };7var obj2 = Object.setPrototypeOf({ b: 2 }, obj);8var obj = { a: 1 };9var obj2 = Object.setPrototypeOf({ b: 2 }, obj);10var obj = { a: 1 };11var obj2 = Object.setPrototypeOf({ b: 2 }, obj);12var obj = { a: 1 };13var obj2 = Object.setPrototypeOf({ b: 2 }, obj);14Object.defineProperty(obj2, 'c', { value: 3 });15var obj = { a: 1 };16var obj2 = Object.setPrototypeOf({ b: 2 }, obj);17Object.defineProperties(obj2, {18 c: { value: 3 },19 d: { value: 4 }20});21var obj = { a: 1 };22var obj2 = Object.setPrototypeOf({ b: 2 }, obj);23var obj = { a: 1 };

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Using AI Code Generation

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1const expect = require('unexpected').clone();2const child = require('./child');3expect.addAssertion('<object> to be a child', (expect, subject) => {4 expect(subject, 'to be a', child);5});6expect(child, 'to be a child');7const child = {};8module.exports = child;9const chai = require('chai');10chai.use(require('chai-as-promised'));11const expect = chai.expect;12const { testFunction } = require('./testFunction');13describe('testFunction', () => {14 it('should return a child object', () => {15 expect(testFunction()).to.eventually.be.a('object');16 });17});18const child = require('./child');19const testFunction = () => {20 return new Promise((resolve, reject) => {21 resolve(child);22 });23};24module.exports = { testFunction };25const child = {};26module.exports = child;27const chai = require('chai');28chai.use(require('chai-as-promised'));29const expect = chai.expect;30const { testFunction } = require('./testFunction');31describe('testFunction', () => {32 it('should return a child object', () => {33 expect(testFunction()).to.eventually.be.a('object');

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1var unexpected = require('unexpected');2var unexpected = unexpected.clone();3unexpected.addAssertion('<string> to be a string', function(expect, subject){4 expect(subject, 'to be a', 'string');5});6var obj = { name: 'John', age: 25 };7var obj2 = { name: 'John', age: 25 };8unexpected(obj, 'to be a string');9unexpected.addAssertion('<string> to be a string', function(expect, subject){10 expect(subject, 'to be a', 'string');11});12var obj = { name: 'John', age: 25 };13var obj2 = { name: 'John', age: 25 };14unexpected(obj, 'to be a string');

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1var unexpected = require('unexpected');2var obj = {};3var proto = { a: 1 };4unexpected.setPrototype(obj, proto);5var unexpected = require('unexpected');6var obj = {};7var proto = { a: 1 };8unexpected.setPrototype(obj, proto);9var unexpected = require('unexpected');10var obj = {};11var proto = { a: 1 };12unexpected.setPrototype(obj, proto);13var unexpected = require('unexpected');14var obj = {};15var proto = { a: 1 };16unexpected.setPrototype(obj, proto);17var unexpected = require('unexpected');18var obj = {};19var proto = { a: 1 };20unexpected.setPrototype(obj, proto);21var unexpected = require('unexpected');22var obj = {};23var proto = { a: 1 };24unexpected.setPrototype(obj, proto);25var unexpected = require('unexpected');26var obj = {};27var proto = { a: 1 };28unexpected.setPrototype(obj, proto);29var unexpected = require('unexpected');30var obj = {};31var proto = { a: 1 };32unexpected.setPrototype(obj, proto);

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