Best JavaScript code snippet using sinon
spy-test.js
Source:spy-test.js  
...1551                var spy = sinon.spy();1552                var callback = sinon.spy();1553                spy(1, 2, { success: callback });1554                spy(3, 4, { success: callback });1555                spy.yieldTo("success");1556                assert(callback.calledTwice);1557                assert(callback.alwaysCalledWith());1558            },1559            "throws if spy was not yet invoked": function () {1560                var spy = sinon.spy();1561                try {1562                    spy.yieldTo("success");1563                    throw new Error();1564                } catch (e) {1565                    assert.equals(e.message, "spy cannot yield to 'success' since it was not yet invoked.");1566                }1567            },1568            "includes spy name in error message": function () {1569                var api = { someMethod: function () {} };1570                var spy = sinon.spy(api, "someMethod");1571                try {1572                    spy.yieldTo("success");1573                    throw new Error();1574                } catch (e) {1575                    assert.equals(e.message, "someMethod cannot yield to 'success' since it was not yet invoked.");1576                }1577            },1578            "pass additional arguments": function () {1579                var spy = sinon.spy();1580                var callback = sinon.spy();1581                var array = [];1582                var object = {};1583                spy({ test: callback });1584                spy.yieldTo("test", "abc", 123, array, object);1585                assert(callback.calledWith("abc", 123, array, object));1586            }1587        },1588        ".yieldToOn": {1589            "is function": function () {1590                var spy = sinon.spy();1591                assert.isFunction(spy.yieldToOn);1592            },1593            "invokes first function arg for all calls": function () {1594                var spy = sinon.spy();1595                var callback = sinon.spy();1596                var thisObj = { name1: "value1", name2: "value2" };1597                spy(1, 2, { success: callback });1598                spy(3, 4, { success: callback });...spy_test.js
Source:spy_test.js  
...1424                var spy = sinon.spy();1425                var callback = sinon.spy();1426                spy(1, 2, { success: callback });1427                spy(3, 4, { success: callback });1428                spy.yieldTo("success");1429                assert(callback.calledTwice);1430                assert(callback.alwaysCalledWith());1431            },1432            "throws if spy was not yet invoked": function () {1433                var spy = sinon.spy();1434                try {1435                    spy.yieldTo("success");1436                    throw new Error();1437                } catch (e) {1438                    assert.equals(e.message, "spy cannot yield to 'success' since it was not yet invoked.");1439                }1440            },1441            "includes spy name in error message": function () {1442                var api = { someMethod: function () {} };1443                var spy = sinon.spy(api, "someMethod");1444                try {1445                    spy.yieldTo("success");1446                    throw new Error();1447                } catch (e) {1448                    assert.equals(e.message, "someMethod cannot yield to 'success' since it was not yet invoked.");1449                }1450            },1451        "passs additional arguments": function () {1452                var spy = sinon.spy();1453                var callback = sinon.spy();1454                var array = [];1455                var object = {};1456                spy({ test: callback });1457                spy.yieldTo("test", "abc", 123, array, object);1458                assert(callback.calledWith("abc", 123, array, object));1459            }1460        },1461        "yieldToOn": {1462            "is function": function () {1463                var spy = sinon.spy();1464                assert.isFunction(spy.yieldToOn);1465            },1466            "invokes first function arg for all calls": function () {1467                var spy = sinon.spy();1468                var callback = sinon.spy();1469                var thisObj = { name1: "value1", name2: "value2" };1470                spy(1, 2, { success: callback });1471                spy(3, 4, { success: callback });...Using AI Code Generation
1var sinon = require('sinon');2var spy = sinon.spy();3spy.yieldTo('callback', 'hello');4spy.yieldTo('callback', 'world');5spy.yieldTo('callback', 'foo');6spy.yieldTo('callback', 'bar');7spy.yieldTo('callback', 'baz');8spy.yieldTo('callback', 'qux');9spy.yieldTo('callback', 'quux');10spy.yieldTo('callback', 'corge');11spy.yieldTo('callback', 'grault');12spy.yieldTo('callback', 'garply');13spy.yieldTo('callback', 'waldo');14spy.yieldTo('callback', 'fred');15spy.yieldTo('callback', 'plugh');16spy.yieldTo('Using AI Code Generation
1var sinon = require('sinon');2var sinonTest = require('sinon-test');3sinon.test = sinonTest.configureTest(sinon);4var assert = require('assert');5var myObj = {6    myMethod: function (callback) {7        callback();8    }9};10describe('myMethod', function () {11    it('should call the callback', sinon.test(function () {12        var spy = this.spy();13        myObj.myMethod(spy);14        assert(spy.called);15    }));16});17var sinon = require('sinon');18var sinonTest = require('sinon-test');19sinon.test = sinonTest.configureTest(sinon);20var assert = require('assert');21var myObj = {22    myMethod: function (callback) {23        callback();24    }25};26describe('myMethod', function () {27    it('should call the callback', sinon.test(function () {28        var spy = this.spy();29        this.spy.yieldTo('callback');30        myObj.myMethod(spy);31        assert(spy.called);32    }));33});34var sinon = require('sinon');35var sinonTest = require('sinon-test');36sinon.test = sinonTest.configureTest(sinon);37var assert = require('assert');38var myObj = {39    myMethod: function (callback) {40        callback();41    }42};43describe('myMethod', function () {44    it('should call the callback', sinon.test(function () {45        var spy = this.spy();46        this.sandbox.spy.yieldTo('callback');47        myObj.myMethod(spy);48        assert(spy.called);49    }));50});Using AI Code Generation
1var sinon = require('sinon');2var myObject = {3    myMethod: function (callback) {4        callback();5    }6};7var spy = sinon.spy(myObject, "myMethod");8spy.yieldTo("callback");9assert(spy.calledWith("callback"));Using AI Code Generation
1var spy = sinon.spy();2spy.yieldTo('success', 'hello world');3spy.yieldTo('error', 'error');4spy.yieldTo('complete', 'complete');5spy.yieldTo('progress', 'progress');6var stub = sinon.stub();7stub.yieldsTo('success', 'hello world');8stub.yieldsTo('error', 'error');9stub.yieldsTo('complete', 'complete');10stub.yieldsTo('progress', 'progress');11var mock = sinon.mock();12mock.expects('success').withArgs('hello world');13mock.expects('error').withArgs('error');14mock.expects('complete').withArgs('complete');15mock.expects('progress').withArgs('progress');16var expectation = sinon.expectation.create('success');17expectation.withArgs('hello world');18expectation('success', 'hello world');19sinon.assert.calledWith('success', 'hello world');20sinon.assert.calledWith('error', 'error');21sinon.assert.calledWith('complete', 'complete');22sinon.assert.calledWith('progress', 'progress');23sinon.assert.calledWith('success', 'hello world');24sinon.assert.calledWith('error', 'error');25sinon.assert.calledWith('complete', 'complete');26sinon.assert.calledWith('progress', 'progress');27sinon.assert.calledWith('success', 'hello world');28sinon.assert.calledWith('error', 'error');29sinon.assert.calledWith('complete', 'complete');30sinon.assert.calledWith('progress', 'progress');31sinon.assert.calledWith('success', 'hello world');32sinon.assert.calledWith('error', 'error');33sinon.assert.calledWith('complete', 'complete');34sinon.assert.calledWith('progress', 'progress');35sinon.assert.calledWith('Using AI Code Generation
1var sinon = require('sinon');2var myObject = {3    myMethod: function() {4    }5};6var spy = sinon.spy(myObject, "myMethod");Using AI Code Generation
1describe('test', function() {2    it('should call callback', function() {3        var callback = sinon.spy();4        var stub = sinon.stub(myObj, 'myMethod', function(param, callback) {5            callback();6        });7        myObj.myMethod('param', callback);8        sinon.assert.calledOnce(callback);9        stub.restore();10    });11});12exports.myMethod = function(param, callback) {13    callback();14};15exports.myMethod = function(param, callback) {16    callback();17};18describe('test', function() {19    it('should call callback', function(done) {20        var callback = sinon.spy();21        var stub = sinon.stub(myObj, 'myMethod', function(param, callback) {22            callback();23        });24        myObj.myMethod('param', callback);25        sinon.assert.calledOnce(callback);26        stub.restore();27        done();28    });29});30exports.myMethod = function(param, callback) {31    callback();32};33describe('test', function() {34    it('should call callback', function(done) {35        var callback = sinon.spy();36        var stub = sinon.stub(myObj, 'myMethod', function(param, callback) {37            callback();38        });39        myObj.myMethod('param', callback);40        sinon.assert.calledOnce(callback);41        stub.restore();42        done();43    });44});45exports.myMethod = function(param, callback) {46    callback();47};48describe('test', function() {49    it('should call callback', function(done) {50        var callback = sinon.spy();51        var stub = sinon.stub(myObj, 'myMethod', function(param, callback) {52            callback();53        });54        myObj.myMethod('param', callback);55        sinon.assert.calledOnce(callback);56        stub.restore();57        done();58    });59});60exports.myMethod = function(param, callback) {61    callback();62};Using AI Code Generation
1var spy = sinon.spy();2spy(function (err, data) {3  console.log(data);4});5spy.yieldTo('success', 'hello world');6var spy = sinon.spy();7spy(function (err, data) {8  console.log(data);9});10spy.yieldToAsync('success', 'hello world');11var spy = sinon.spy();12spy(function (err, data) {13  console.log(data);14});15spy.yieldToAsync('success', 'hello world');16var spy = sinon.spy();17spy(function (err, data) {18  console.log(data);19});20spy.yieldToOn('success', {name: 'test'}, 'hello world');21var spy = sinon.spy();22spy(function (err, data) {23  console.log(data);24});25spy.yieldToOnAsync('success', {name: 'test'}, 'hello world');26var spy = sinon.spy();27spy(function (err, data) {28  console.log(data);29});30spy.yieldToOnAsync('success', {name: 'test'}, 'hello world');31var spy = sinon.spy();32spy(function (err, data) {33  console.log(data);34});35spy.yieldOn({name: 'test'}, 'hello world');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.
You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.
Get 100 minutes of automation test minutes FREE!!
