Best JavaScript code snippet using sinon
spy-test.js
Source:spy-test.js  
...1377                var callback = sinon.spy();1378                var thisObj = { name1: "value1", name2: "value2" };1379                spy(1, 2, callback);1380                spy(3, 4, callback);1381                spy.callArgOn(2, thisObj);1382                assert(callback.calledTwice);1383                assert(callback.alwaysCalledWith());1384                assert(callback.alwaysCalledOn(thisObj));1385            },1386            "throws if argument at index is not a function": function () {1387                var spy = sinon.spy();1388                var thisObj = { name1: "value1", name2: "value2" };1389                spy();1390                assert.exception(function () {1391                    spy.callArgOn(1, thisObj);1392                }, "TypeError");1393            },1394            "throws if spy was not yet invoked": function () {1395                var spy = sinon.spy();1396                var thisObj = { name1: "value1", name2: "value2" };1397                try {1398                    spy.callArgOn(0, thisObj);1399                    throw new Error();1400                } catch (e) {1401                    assert.equals(e.message, "spy cannot call arg since it was not yet invoked.");1402                }1403            },1404            "includes spy name in error message": function () {1405                var api = { someMethod: function () {} };1406                var spy = sinon.spy(api, "someMethod");1407                var thisObj = { name1: "value1", name2: "value2" };1408                try {1409                    spy.callArgOn(0, thisObj);1410                    throw new Error();1411                } catch (e) {1412                    assert.equals(e.message, "someMethod cannot call arg since it was not yet invoked.");1413                }1414            },1415            "throws if index is not a number": function () {1416                var spy = sinon.spy();1417                var thisObj = { name1: "value1", name2: "value2" };1418                spy();1419                assert.exception(function () {1420                    spy.callArg("", thisObj);1421                }, "TypeError");1422            },1423            "pass additional arguments": function () {1424                var spy = sinon.spy();1425                var callback = sinon.spy();1426                var array = [];1427                var object = {};1428                var thisObj = { name1: "value1", name2: "value2" };1429                spy(callback);1430                spy.callArgOn(0, thisObj, "abc", 123, array, object);1431                assert(callback.calledWith("abc", 123, array, object));1432                assert(callback.calledOn(thisObj));1433            }1434        },1435        ".callArgWith": {1436            "is alias for callArg": function () {1437                var spy = sinon.spy();1438                assert.same(spy.callArgWith, spy.callArg);1439            }1440        },1441        ".callArgOnWith": {1442            "is alias for callArgOn": function () {1443                var spy = sinon.spy();1444                assert.same(spy.callArgOnWith, spy.callArgOn);...spy_test.js
Source:spy_test.js  
...1250                var callback = sinon.spy();1251                var thisObj = { name1: "value1", name2: "value2" };1252                spy(1, 2, callback);1253                spy(3, 4, callback);1254                spy.callArgOn(2, thisObj);1255                assert(callback.calledTwice);1256                assert(callback.alwaysCalledWith());1257                assert(callback.alwaysCalledOn(thisObj));1258            },1259            "throws if argument at index is not a function": function () {1260                var spy = sinon.spy();1261                var thisObj = { name1: "value1", name2: "value2" };1262                spy();1263                assert.exception(function () {1264                    spy.callArgOn(1, thisObj);1265                }, "TypeError");1266            },1267            "throws if spy was not yet invoked": function () {1268                var spy = sinon.spy();1269                var thisObj = { name1: "value1", name2: "value2" };1270                try {1271                    spy.callArgOn(0, thisObj);1272                    throw new Error();1273                } catch (e) {1274                    assert.equals(e.message, "spy cannot call arg since it was not yet invoked.");1275                }1276            },1277            "includes spy name in error message": function () {1278                var api = { someMethod: function () {} };1279                var spy = sinon.spy(api, "someMethod");1280                var thisObj = { name1: "value1", name2: "value2" };1281                try {1282                    spy.callArgOn(0, thisObj);1283                    throw new Error();1284                } catch (e) {1285                    assert.equals(e.message, "someMethod cannot call arg since it was not yet invoked.");1286                }1287            },1288            "throws if index is not a number": function () {1289                var spy = sinon.spy();1290                var thisObj = { name1: "value1", name2: "value2" };1291                spy();1292                assert.exception(function () {1293                    spy.callArg("", thisObj);1294                }, "TypeError");1295            },1296            "pass additional arguments": function () {1297                var spy = sinon.spy();1298                var callback = sinon.spy();1299                var array = [];1300                var object = {};1301                var thisObj = { name1: "value1", name2: "value2" };1302                spy(callback);1303                spy.callArgOn(0, thisObj, "abc", 123, array, object);1304                assert(callback.calledWith("abc", 123, array, object));1305                assert(callback.calledOn(thisObj));1306            }1307        },1308        "callArgWith": {1309            "is alias for callArg": function () {1310                var spy = sinon.spy();1311                assert.same(spy.callArgWith, spy.callArg);1312            }1313        },1314        "callArgOnWith": {1315            "is alias for callArgOn": function () {1316                var spy = sinon.spy();1317                assert.same(spy.callArgOnWith, spy.callArgOn);...Using AI Code Generation
1var spy = sinon.spy();2spy(1, 2, 3);3spy.callArgOn(0, {foo: 'bar'}, 4, 5, 6);4var spy = sinon.spy();5spy(1, 2, 3);6spy.callArgOn(0, {foo: 'bar'}, 4, 5, 6);7var spy = sinon.spy();8spy(1, 2, 3);9spy.callArgOn(0, {foo: 'bar'}, 4, 5, 6);10var spy = sinon.spy();11spy(1, 2, 3);12spy.callArgOn(0, {foo: 'bar'}, 4, 5, 6);13var spy = sinon.spy();14spy(1, 2, 3);15spy.callArgOn(0, {foo: 'bar'}, 4, 5, 6);16var spy = sinon.spy();17spy(1, 2, 3);18spy.callArgOn(0, {foo: 'bar'}, 4, 5, 6);19var spy = sinon.spy();20spy(1, 2, 3);21spy.callArgOn(0, {foo: 'bar'}, 4, 5, 6);22var spy = sinon.spy();23spy(1, 2, 3);24spy.callArgOn(0, {foo: 'bar'}, 4, 5, 6);25var spy = sinon.spy();26spy(1, 2, 3);27spy.callArgOn(0, {foo: 'bar'}, 4, 5, 6);Using AI Code Generation
1var spy = sinon.spy();2var obj = { foo: spy };3obj.foo(1, 2, 3);4spy.callArgOn(0, obj, 4, 5, 6);5var spy = sinon.spy();6var obj = { foo: spy };7obj.foo(1, 2, 3);8spy.callArgOn(0, obj, 4, 5, 6);9var spy = sinon.spy();10var obj = { foo: spy };11obj.foo(1, 2, 3);12spy.callArgOn(0, obj, 4, 5, 6);13var spy = sinon.spy();14var obj = { foo: spy };15obj.foo(1, 2, 3);16spy.callArgOn(0, obj, 4, 5, 6);17var spy = sinon.spy();18var obj = { foo: spy };19obj.foo(1, 2, 3);20spy.callArgOn(0, obj, 4, 5, 6);21var spy = sinon.spy();22var obj = { foo: spy };23obj.foo(1, 2, 3);24spy.callArgOn(0, obj, 4, 5, 6);25var spy = sinon.spy();26var obj = { foo: spy };27obj.foo(1, 2, 3);28spy.callArgOn(0, obj, 4, 5, 6);Using AI Code Generation
1var sinon = require('sinon');2var assert = require('assert');3var sandbox = sinon.sandbox.create();4var obj = {5    foo: function() {6        console.log('foo');7    }8};9var spy = sandbox.spy(obj, 'foo');10spy.callArgOn(0, obj);11assert(spy.calledOnce);12console.log('done');Using AI Code Generation
1var sinon = require('sinon');2var should = require('should');3describe('test', function() {4    it('test', function() {5        var callback = sinon.spy();6        var obj = {7            test: function() {8                callback();9            }10        };11        var spy = sinon.spy(obj, 'test');12        spy.callArgOn(0, obj);13        spy.called.should.be.true;14        spy.callCount.should.equal(1);15        spy.calledOn(obj).should.be.true;16    });17});Using AI Code Generation
1var sinon = require('sinon');2var spy = sinon.spy();3var obj = {name: 'foo'};4spy.callArgOn(0, obj);5var sinon = require('sinon');6var spy = sinon.spy();7spy.callArgWith(0, 42, 'hello', 'world');8var sinon = require('sinon');9var spy = sinon.spy();10var obj = {name: 'foo'};11spy.callArgOnWith(0, obj, 42, 'hello', 'world');12var sinon = require('sinon');13var spy = sinon.spy();14spy.callArg(0);15var sinon = require('sinon');16var spy = sinon.spy();17var obj = {name: 'foo'};18spy.callArgOn(0, obj);19var sinon = require('sinon');20var spy = sinon.spy();21spy.callArgWith(0, 42, 'hello', 'world');Using AI Code Generation
1var spy = sinon.spy();2var obj = { method: spy };3var callback = function() {};4spy.callArgOn(0, obj, callback);5var spy = sinon.spy();6spy.withArgs(42).returns(1);7spy.withArgs(43).returns(2);8spy.withArgs(44).returns(3);Using AI Code Generation
1var sinon = require('sinon');2var myModule = require('./myModule');3var myModuleInstance = new myModule();4var myStub = sinon.stub(myModule.prototype, 'myMethod').callsArgOn(0, myModuleInstance);5var mySpy = sinon.spy(myModule.prototype, 'myMethod');6myModuleInstance.myMethod(function () {7    console.log('callback called');8});9module.exports = function () {10    this.myMethod = function (callback) {11        callback();12    };13};Using AI Code Generation
1var sinon = require('sinon');2var EventEmitter = require('events').EventEmitter;3var emitter = new EventEmitter();4var callback = sinon.spy();5emitter.on('event', callback);6emitter.emit('event');7console.log(callback.neverCalledWithUsing AI Code Generation
1var spy = sinon.spy();2var stub = sinon.stub();3spy.callArgOn(0, stub);4spy.callArgOn(0, stub, 'arg1', 'arg2');5spy.callArgOn(0, stub, 'arg1', 'arg2', 'arg3');6var spy = sinon.spy();7var stub = sinon.stub();8spy.callArgWith(0);9spy.callArgWith(0, 'arg1', 'arg2');10spy.callArgWith(0, 'arg1', 'arg2', 'arg3');11var spy = sinon.spy();12var stub = sinon.stub();13spy.callArg(0);14spy.callArg(0, 'arg1', 'arg2');15spy.callArg(0, 'arg1', 'arg2', 'arg3');16var spy = sinon.spy();17var stub = sinon.stub();18spy.callArgOnWith(0, stub);19spy.callArgOnWith(0, stub, 'arg1', 'arg2');20spy.callArgOnWith(0, stub, 'arg1', 'arg2', 'arg3');21var spy = sinon.spy();22var stub = sinon.stub();23spy.callArgOn(0, stub);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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