Best JavaScript code snippet using sinon
spy-test.js
Source:spy-test.js  
...1595                var callback = sinon.spy();1596                var thisObj = { name1: "value1", name2: "value2" };1597                spy(1, 2, { success: callback });1598                spy(3, 4, { success: callback });1599                spy.yieldToOn("success", thisObj);1600                assert(callback.calledTwice);1601                assert(callback.alwaysCalledWith());1602                assert(callback.alwaysCalledOn(thisObj));1603            },1604            "throws if spy was not yet invoked": function () {1605                var spy = sinon.spy();1606                var thisObj = { name1: "value1", name2: "value2" };1607                try {1608                    spy.yieldToOn("success", thisObj);1609                    throw new Error();1610                } catch (e) {1611                    assert.equals(e.message, "spy cannot yield to 'success' since it was not yet invoked.");1612                }1613            },1614            "includes spy name in error message": function () {1615                var api = { someMethod: function () {} };1616                var spy = sinon.spy(api, "someMethod");1617                var thisObj = { name1: "value1", name2: "value2" };1618                try {1619                    spy.yieldToOn("success", thisObj);1620                    throw new Error();1621                } catch (e) {1622                    assert.equals(e.message, "someMethod cannot yield to 'success' since it was not yet invoked.");1623                }1624            },1625            "pass additional arguments": function () {1626                var spy = sinon.spy();1627                var callback = sinon.spy();1628                var array = [];1629                var object = {};1630                var thisObj = { name1: "value1", name2: "value2" };1631                spy({ test: callback });1632                spy.yieldToOn("test", thisObj, "abc", 123, array, object);1633                assert(callback.calledWith("abc", 123, array, object));1634                assert(callback.calledOn(thisObj));1635            }1636        },1637        ".reset": {1638            "return same object": function () {1639                var spy = sinon.spy();1640                var reset = spy.reset();1641                assert(reset === spy);1642            },1643            "throws if called during spy invocation": function () {1644                var spy = sinon.spy(function () {1645                    spy.reset();1646                });...spy_test.js
Source:spy_test.js  
...1468                var callback = sinon.spy();1469                var thisObj = { name1: "value1", name2: "value2" };1470                spy(1, 2, { success: callback });1471                spy(3, 4, { success: callback });1472                spy.yieldToOn("success", thisObj);1473                assert(callback.calledTwice);1474                assert(callback.alwaysCalledWith());1475                assert(callback.alwaysCalledOn(thisObj));1476            },1477            "throws if spy was not yet invoked": function () {1478                var spy = sinon.spy();1479                var thisObj = { name1: "value1", name2: "value2" };1480                try {1481                    spy.yieldToOn("success", thisObj);1482                    throw new Error();1483                } catch (e) {1484                    assert.equals(e.message, "spy cannot yield to 'success' since it was not yet invoked.");1485                }1486            },1487            "includes spy name in error message": function () {1488                var api = { someMethod: function () {} };1489                var spy = sinon.spy(api, "someMethod");1490                var thisObj = { name1: "value1", name2: "value2" };1491                try {1492                    spy.yieldToOn("success", thisObj);1493                    throw new Error();1494                } catch (e) {1495                    assert.equals(e.message, "someMethod cannot yield to 'success' since it was not yet invoked.");1496                }1497            },1498            "pass additional arguments": function () {1499                var spy = sinon.spy();1500                var callback = sinon.spy();1501                var array = [];1502                var object = {};1503                var thisObj = { name1: "value1", name2: "value2" };1504                spy({ test: callback });1505                spy.yieldToOn("test", thisObj, "abc", 123, array, object);1506                assert(callback.calledWith("abc", 123, array, object));1507                assert(callback.calledOn(thisObj));1508            }1509        }1510    });...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.yieldToOn('callback');9var sinon = require('sinon');10var myObject = {11    myMethod: function (callback) {12        callback();13    }14};15var spy = sinon.spy(myObject, 'myMethod');16spy.yieldOn('callback');17var sinon = require('sinon');18var myObject = {19    myMethod: function (callback) {20        callback();21    }22};23var spy = sinon.spy(myObject, 'myMethod');24spy.yieldTo('callback');25var sinon = require('sinon');26var myObject = {27    myMethod: function (callback) {28        callback();29    }30};31var spy = sinon.spy(myObject, 'myMethod');32spy.yield();33var sinon = require('sinon');34var myObject = {35    myMethod: function (callback) {36        callback();37    }38};39var spy = sinon.spy(myObject, 'myMethod');40spy.withArgs('callback');41var sinon = require('sinon');42var myObject = {43    myMethod: function (callback) {44        callback();45    }46};47var spy = sinon.spy(myObject, 'myMethod');48spy.withArgs('callback');49var sinon = require('sinon');50var myObject = {51    myMethod: function (callback) {52        callback();53    }54};55var spy = sinon.spy(myObject, 'myMethod');56spy.withArgs('callback');Using AI Code Generation
1var sinon = require('sinon');2var fs = require('fs');3var EventEmitter = require('events').EventEmitter;4var spy = sinon.spy();5spy.yieldToOn('data', 'test');6spy.yieldToOn('end', 'test');7spy.on('data', function(data){8  console.log('data: ' + data);9});10spy.on('end', function(){11  console.log('end');12});13var sinon = require('sinon');14var fs = require('fs');15var EventEmitter = require('events').EventEmitter;16var spy = sinon.spy();17spy.yieldOn('data', 'test');18spy.yieldOn('end', 'test');19spy.on('data', function(data){20  console.log('data: ' + data);21});22spy.on('end', function(){23  console.log('end');24});25var sinon = require('sinon');26var fs = require('fs');27var EventEmitter = require('events').EventEmitter;28var spy = sinon.spy();29spy.yield('data', 'test');30spy.yield('end', 'test');31spy.on('data', function(data){32  console.log('data: ' + data);33});34spy.on('end', function(){35  console.log('end');36});37var sinon = require('sinon');38var fs = require('fs');39var EventEmitter = require('events').EventEmitter;40var spy = sinon.spy();41spy.yield('test');42spy.on('data', function(data){43  console.log('data: ' + data);44});45spy.on('end', function(){46  console.log('end');47});Using AI Code Generation
1var sinon = require('sinon');2var fs = require('fs');3var assert = require('assert');4var file = fs.readFileSync('test.txt', 'utf8');5var spy = sinon.spy(fs, 'readFileSync');6spy.withArgs('test.txt', 'utf8').yieldsToOn('data', 'utf8');7spy.withArgs('test.txt', 'utf8').yieldsToOn('end', 'utf8');8spy.withArgs('test.txt', 'utf8').yieldsToOn('error', 'utf8');9{10  "scripts": {11  },12  "devDependencies": {13  }14}Using AI Code Generation
1var sinon = require('sinon');2var obj = {3  test: function() {4    console.log('test');5  }6};7var spy = sinon.spy(obj, 'test');8spy.yieldToOn('test', 'test');9console.log('test');10var sinon = require('sinon');11var obj = {12  test: function() {13    console.log('test');14  }15};16var spy = sinon.spy(obj, 'test');17spy.yieldToOn('test', 'test');18console.log('test');19var sinon = require('sinon');20var obj = {21  test: function() {22    console.log('test');23  }24};25var spy = sinon.spy(obj, 'test');26spy.yieldToOn('test', 'test');27console.log('test');28var sinon = require('sinon');29var obj = {30  test: function() {31    console.log('test');32  }33};34var spy = sinon.spy(obj, 'test');35spy.yieldToOn('test', 'test');36console.log('test');37var sinon = require('sinon');38var obj = {39  test: function() {40    console.log('test');41  }42};43var spy = sinon.spy(obj, 'test');44spy.yieldToOn('test', 'test');45console.log('test');46var sinon = require('sinon');47var obj = {48  test: function() {49    console.log('test');50  }51};52var spy = sinon.spy(obj, 'test');53spy.yieldToOn('test', 'test');Using AI Code Generation
1var sinon = require('sinon');2var spy = sinon.spy();3spy.yieldToOn('error', 'my error');4var sinon = require('sinon');5var spy = sinon.spy();6spy.yieldTo('error', 'my error');Using AI Code Generation
1var sinon = require('sinon');2var assert = require('assert');3var MyClass = require('./myclass');4var myObj = new MyClass();5describe('MyClass', function() {6  describe('method', function() {7    it('should call the callback function', function() {8      var spy = sinon.spy();9      myObj.method(spy);10      assert(spy.calledOnce);11    });12  });13});14var MyClass = function() {15  this.method = function(callback) {16    if (typeof callback === 'function') {17      callback();18    }19  }20}21module.exports = MyClass;Using AI Code Generation
1var spy = sinon.spy();2var obj = {foo: spy};3obj.foo(1,2,3);4spy.yieldToOn('foo', obj, 1,2,3);5var spy = sinon.spy();6var obj = {foo: spy};7obj.foo(1,2,3);8spy.yieldTo('foo', 1,2,3);Using AI Code Generation
1var myModule = require('myModule');2var sinon = require('sinon');3var assert = require('assert');4describe('myModule', function () {5    it('should call callback function', function () {6        var callback = sinon.spy();7        var stub = sinon.stub(myModule, 'myFunction', function (cb) {8            cb();9        });10        myModule.myFunction(callback);11        assert(callback.called);12        stub.restore();13    });14});15module.exports = {16    myFunction: function (cb) {17        cb();18    }19};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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