Best JavaScript code snippet using sinon
assert.js
Source:assert.js  
...40            object = object || global;41            var failMethod = object.fail || assert.fail;42            failMethod.call(object, msg);43        }44        function mirrorPropAsAssertion(name, method, message) {45            if (arguments.length == 2) {46                message = method;47                method = name;48            }49            assert[name] = function (fake) {50                verifyIsStub(fake);51                var args = slice.call(arguments, 1);52                var failed = false;53                if (typeof method == "function") {54                    failed = !method(fake);55                } else {56                    failed = typeof fake[method] == "function" ?57                        !fake[method].apply(fake, args) : !fake[method];58                }59                if (failed) {60                    failAssertion(this, (fake.printf || fake.proxy.printf).apply(fake, [message].concat(args)));61                } else {62                    assert.pass(name);63                }64            };65        }66        function exposedName(prefix, prop) {67            return !prefix || /^fail/.test(prop) ? prop :68                prefix + prop.slice(0, 1).toUpperCase() + prop.slice(1);69        }70        assert = {71            failException: "AssertError",72            fail: function fail(message) {73                var error = new Error(message);74                error.name = this.failException || assert.failException;75                throw error;76            },77            pass: function pass(assertion) {},78            callOrder: function assertCallOrder() {79                verifyIsStub.apply(null, arguments);80                var expected = "", actual = "";81                if (!sinon.calledInOrder(arguments)) {82                    try {83                        expected = [].join.call(arguments, ", ");84                        var calls = slice.call(arguments);85                        var i = calls.length;86                        while (i) {87                            if (!calls[--i].called) {88                                calls.splice(i, 1);89                            }90                        }91                        actual = sinon.orderByFirstCall(calls).join(", ");92                    } catch (e) {93                        // If this fails, we'll just fall back to the blank string94                    }95                    failAssertion(this, "expected " + expected + " to be " +96                                "called in order but were called as " + actual);97                } else {98                    assert.pass("callOrder");99                }100            },101            callCount: function assertCallCount(method, count) {102                verifyIsStub(method);103                if (method.callCount != count) {104                    var msg = "expected %n to be called " + sinon.timesInWords(count) +105                        " but was called %c%C";106                    failAssertion(this, method.printf(msg));107                } else {108                    assert.pass("callCount");109                }110            },111            expose: function expose(target, options) {112                if (!target) {113                    throw new TypeError("target is null or undefined");114                }115                var o = options || {};116                var prefix = typeof o.prefix == "undefined" && "assert" || o.prefix;117                var includeFail = typeof o.includeFail == "undefined" || !!o.includeFail;118                for (var method in this) {119                    if (method != "expose" && (includeFail || !/^(fail)/.test(method))) {120                        target[exposedName(prefix, method)] = this[method];121                    }122                }123                return target;124            },125            match: function match(actual, expectation) {126                var matcher = sinon.match(expectation);127                if (matcher.test(actual)) {128                    assert.pass("match");129                } else {130                    var formatted = [131                        "expected value to match",132                        "    expected = " + sinon.format(expectation),133                        "    actual = " + sinon.format(actual)134                    ]135                    failAssertion(this, formatted.join("\n"));136                }137            }138        };139        mirrorPropAsAssertion("called", "expected %n to have been called at least once but was never called");140        mirrorPropAsAssertion("notCalled", function (spy) {141            return !spy.called;142        }, "expected %n to not have been called but was called %c%C");143        mirrorPropAsAssertion("calledOnce", "expected %n to be called once but was called %c%C");144        mirrorPropAsAssertion("calledTwice", "expected %n to be called twice but was called %c%C");145        mirrorPropAsAssertion("calledThrice", "expected %n to be called thrice but was called %c%C");146        mirrorPropAsAssertion("calledOn", "expected %n to be called with %1 as this but was called with %t");147        mirrorPropAsAssertion("alwaysCalledOn", "expected %n to always be called with %1 as this but was called with %t");148        mirrorPropAsAssertion("calledWithNew", "expected %n to be called with new");149        mirrorPropAsAssertion("alwaysCalledWithNew", "expected %n to always be called with new");150        mirrorPropAsAssertion("calledWith", "expected %n to be called with arguments %*%C");151        mirrorPropAsAssertion("calledWithMatch", "expected %n to be called with match %*%C");152        mirrorPropAsAssertion("alwaysCalledWith", "expected %n to always be called with arguments %*%C");153        mirrorPropAsAssertion("alwaysCalledWithMatch", "expected %n to always be called with match %*%C");154        mirrorPropAsAssertion("calledWithExactly", "expected %n to be called with exact arguments %*%C");155        mirrorPropAsAssertion("alwaysCalledWithExactly", "expected %n to always be called with exact arguments %*%C");156        mirrorPropAsAssertion("neverCalledWith", "expected %n to never be called with arguments %*%C");157        mirrorPropAsAssertion("neverCalledWithMatch", "expected %n to never be called with match %*%C");158        mirrorPropAsAssertion("threw", "%n did not throw exception%C");159        mirrorPropAsAssertion("alwaysThrew", "%n did not always throw exception%C");160        sinon.assert = assert;161        return assert;162    }163    var isNode = typeof module !== "undefined" && module.exports && typeof require == "function";164    var isAMD = typeof define === "function" && typeof define.amd === "object" && define.amd;165    function loadDependencies(require, exports, module) {166        var sinon = require("./util/core");167        require("./match");168        require("./format");169        module.exports = makeApi(sinon);170    }171    if (isAMD) {172        define(loadDependencies);173    } else if (isNode) {...Using AI Code Generation
1var sinonChai = require('sinon-chai');2chai.use(sinonChai);3var chaiAsPromised = require('chai-as-promised');4chai.use(chaiAsPromised);5describe('test', function() {6    it('test', function() {7        var promise = Promise.resolve(1);8        return expect(promise).to.become(1);9    });10});11var sinonChai = require('sinon-chai');12chai.use(sinonChai);13var chaiAsPromised = require('chai-as-promised');14chai.use(chaiAsPromised);15describe('test', function() {16    it('test', function() {17        var promise = Promise.resolve(1);18        return expect(promise).to.become(1);19    });20});21    at Object.<anonymous> (node_modules/chai-as-promised/lib/chai-as-promised.js:15:20)22    at Module._compile (module.js:556:32)23    at Object.Module._extensions..js (module.js:565:10)24    at Module.load (module.js:473:32)25    at tryModuleLoad (module.js:432:12)26    at Function.Module._load (module.js:424:3)27    at Module.require (module.js:483:17)28    at require (internal/module.js:20:19)29    at Object.<anonymous> (test/test.js:4:13)30    at Module._compile (module.js:556:32)31    at Object.Module._extensions..js (module.js:565:10)32    at Module.load (module.js:473:32)33    at tryModuleLoad (module.js:432:12)34    at Function.Module._load (module.js:424:3)35    at Module.require (module.js:483:17)36    at require (internal/module.js:20:19)Using AI Code Generation
1var chai = require('chai');2var sinon = require('sinon');3var sinonChai = require('sinon-chai');4chai.use(sinonChai);5var expect = chai.expect;6var obj = {7  method: function() {}8};9var spy = sinon.spy(obj, 'method');10obj.method(42);11expect(spy).to.have.been.calledWith(42);12var chai = require('chai');13var sinon = require('sinon');14var sinonChai = require('sinon-chai');15chai.use(sinonChai);16var expect = chai.expect;17var obj = {18  method: function() {}19};20var spy = sinon.spy(obj, 'method');21obj.method(42);22expect(spy).to.have.been.calledWith(42);23var assert = require('assert');24var sinon = require('sinon');25function forEach(items, callback) {26  for (var index = 0; index < items.length; index++) {27    callback(items[index]);28  }29}30describe('forEach', function() {31  it('should call the callback on each element', function() {32    var spy = sinon.spy();33    forEach([1, 2, 3], spy);34    assert(spy.calledWith(1));35    assert(spy.calledWith(2));36    assert(spy.calledWith(3));37    assert(spy.callCount === 3);38  });39});40var assert = require('assert');41var sinon = require('sinon');42function forEach(items, callback) {43  for (var index = 0; index < items.length; index++) {44    callback(items[index]);45  }46}47describe('forEach', function() {48  it('should call the callback on each element', function() {49    var spy = sinon.spy();50    forEach([1, 2, 3], spy);51    assert(spy.calledWith(1));52    assert(spy.calledWith(2));53    assert(spy.calledWith(3));54    assert(spy.callCount === 3);55  });56});57var assert = require('assert');58var sinon = require('sinon');59function forEach(items, callback) {60  for (var index = 0; index < items.length; index++) {61    callback(items[index]);62  }63}64describe('forEach', function() {65  it('should call the callback on each element', function() {Using AI Code Generation
1var chai = require('chai');2var sinonChai = require('sinon-chai');3chai.use(sinonChai);4var sinon = require('sinon');5var expect = chai.expect;6var obj = {7  method: function(){},8};9var spy = sinon.spy(obj, 'method');10spy.should.have.been.called;11obj.should.have.mirrorPropAsAssertion('prop');12obj.prop.should.be.equal('value');13function mirrorPropAsAssertion (chai, utils, obj, prop) {14  utils.addProperty(chai.Assertion.prototype, prop, function () {15    var obj = this._obj;16    var prop = this.__flags.property;17    this.assert(18      'expected #{this} to have property #{exp} with value #{act}',19      'expected #{this} to not have property #{exp} with value #{act}',20    );21  });22}23var chai = require('chai');24var sinonChai = require('sinon-chai');25chai.use(sinonChai);26var sinon = require('sinon');27var expect = chai.expect;28var obj = {29  method: function(){},30};31var spy = sinon.spy(obj, 'method');32spy.should.have.been.called;33mirrorPropAsAssertion(chai, chai.util, obj, 'prop');34obj.prop.should.be.equal('value');Using AI Code Generation
1var chai = require('chai');2var sinon = require('sinon');3var sinonChai = require('sinon-chai');4chai.use(sinonChai);5var expect = chai.expect;6var myLib = {7    doSomething: function() {8        console.log('Doing Something');9    }10}11var spy = sinon.spy();12myLib.doSomething = spy;13myLib.doSomething();14expect(spy).to.have.been.calledOnce;15var myLib = {16    doSomething: function() {17        console.log('Doing Something');18    }19}20var stub = sinon.stub();21myLib.doSomething = stub;22myLib.doSomething();23expect(stub).to.have.been.calledOnce;24var myLib = {25    doSomething: function() {26        console.log('Doing Something');27    }28}29var spy = sinon.spy();30myLib.doSomething = spy;31myLib.doSomething();32expect(spy).to.have.been.calledOnce;33var myLib = {34    doSomething: function() {35        console.log('Doing Something');36    }37}38var stub = sinon.stub();39myLib.doSomething = stub;40myLib.doSomething();41expect(stub).to.have.been.calledOnce;42var myLib = {43    doSomething: function() {44        console.log('Doing Something');45    }46}47var spy = sinon.spy();48myLib.doSomething = spy;49myLib.doSomething();50expect(spy).to.have.been.calledOnce;51var myLib = {52    doSomething: function() {53        console.log('Doing Something');54    }55}56var stub = sinon.stub();57myLib.doSomething = stub;58myLib.doSomething();59expect(stub).to.have.been.calledOnce;60var myLib = {61    doSomething: function() {62        console.log('Doing Something');63    }64}65var spy = sinon.spy();66myLib.doSomething = spy;67myLib.doSomething();68expect(spy).to.have.been.calledOnce;69var myLib = {70    doSomething: function() {71        console.log('Doing Something');72    }73}74var stub = sinon.stub();Using AI Code Generation
1import chai from 'chai';2import sinon from 'sinon';3import sinonChai from 'sinon-chai';4chai.should();5chai.use(sinonChai);6describe('test', () => {7    it('should call stub', () => {8        const stub = sinon.stub();9        stub();10        stub.should.have.been.called;11    });12});13import chai from 'chai';14import sinon from 'sinon';15import sinonChai from 'chai-sinon';16chai.should();17chai.use(sinonChai);18describe('test', () => {19    it('should call stub', () => {20        const stub = sinon.stub();21        stub();22        stub.should.have.been.called;23    });24});25PhantomJS 2.1.1 (Windows 8 0.0.0) ERRORUsing AI Code Generation
1sinon.assert.mirrorPropAsAssertion(sinon.assert, "calledOnce", "calledOnce");2sinon.assert.mirrorPropAsAssertion(sinon.assert, "calledTwice", "calledTwice");3sinon.assert.mirrorPropAsAssertion(sinon.assert, "calledThrice", "calledThrice");4sinon.assert.mirrorPropAsAssertion(sinon.assert, "calledOn", "calledOn");5sinon.assert.mirrorPropAsAssertion(sinon.assert, "calledWith", "calledWith");6sinon.assert.mirrorPropAsAssertion(sinon.assert, "calledWithMatch", "calledWithMatch");7sinon.assert.mirrorPropAsAssertion(sinon.assert, "alwaysCalledOn", "alwaysCalledOn");8sinon.assert.mirrorPropAsAssertion(sinon.assert, "alwaysCalledWith", "alwaysCalledWith");9sinon.assert.mirrorPropAsAssertion(sinon.assert, "alwaysCalledWithMatch", "alwaysCalledWithMatch");10sinon.assert.alwaysCalledWithMatch(spy, 1,Using AI Code Generation
1var sinon = require('sinon');2var obj = { prop: "value" };3sinon.assert.mirrorPropAsAssertion("prop", sinon.assert.match, "assertionName");4sinon.assert.assertionName(obj, "value");5var chai = require('chai');6var sinonChai = require('sinon-chai');7chai.use(sinonChai);8var obj = { prop: "value" };9chai.assert.mirrorPropAsAssertion("prop", sinon.assert.match, "assertionName");10chai.assert.assertionName(obj, "value");Using AI Code Generation
1var sinon = require('sinon');2var assert = require('assert');3var myObj = {4    myMethod: function () {5        return 'hello';6    }7};8var spy = sinon.spy(myObj, 'myMethod');9spy();10assert(spy.called);11assert(myObj.myMethod.called);12    at Object.<anonymous> (test.js:12:15)13var sinon = require('sinon');14var assert = require('assert');15var myObj = {16    myMethod: function () {17        return 'hello';18    }19};20var spy = sinon.spy(myObj, 'myMethod');21sinon.assert.expose(myObj);22spy();23assert(myObj.myMethod.called);24var sinon = require('sinon');25var assert = require('assert');26var myObj = {27    myMethod: function () {28        return 'hello';29    }30};31var spy = sinon.spy(myObj, 'myMethod');32sinon.assert.expose(myObj, {prefix: ''});33spy();34assert(myObj.called);Using AI Code Generation
1import sinon from "sinon";2import { mirrorPropAsAssertion } from "sinon";3import { expect } from "chai";4sinon.assert.calledWithExactly = mirrorPropAsAssertion(5);6sinon.assert.notCalledWithExactly = mirrorPropAsAssertion(7);8describe("Test", function() {9  it("test", function() {10    const spy = sinon.spy();11    spy("foo", "bar");12    expect(spy).to.have.been.calledWithExactly("foo", "bar");13  });14});15sinon.assert.calledWithExactly(spy, "foo", "bar");16sinon.assert.calledWithExactly(spy, "foo", "bar");17sinon.assert.calledWithExactly(spy, "foo", "bar");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.
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