Best JavaScript code snippet using sinon
spy-test.js
Source:spy-test.js  
...1503                var callback = sinon.spy();1504                var thisObj = { name1: "value1", name2: "value2" };1505                spy(1, 2, callback);1506                spy(3, 4, callback);1507                spy.yieldOn(thisObj);1508                assert(callback.calledTwice);1509                assert(callback.alwaysCalledWith());1510                assert(callback.alwaysCalledOn(thisObj));1511            },1512            "throws if spy was not yet invoked": function () {1513                var spy = sinon.spy();1514                var thisObj = { name1: "value1", name2: "value2" };1515                try {1516                    spy.yieldOn(thisObj);1517                    throw new Error();1518                } catch (e) {1519                    assert.equals(e.message, "spy cannot yield since it was not yet invoked.");1520                }1521            },1522            "includes spy name in error message": function () {1523                var api = { someMethod: function () {} };1524                var spy = sinon.spy(api, "someMethod");1525                var thisObj = { name1: "value1", name2: "value2" };1526                try {1527                    spy.yieldOn(thisObj);1528                    throw new Error();1529                } catch (e) {1530                    assert.equals(e.message, "someMethod cannot yield since it was not yet invoked.");1531                }1532            },1533            "pass additional arguments": function () {1534                var spy = sinon.spy();1535                var callback = sinon.spy();1536                var array = [];1537                var object = {};1538                var thisObj = { name1: "value1", name2: "value2" };1539                spy(callback);1540                spy.yieldOn(thisObj, "abc", 123, array, object);1541                assert(callback.calledWith("abc", 123, array, object));1542                assert(callback.calledOn(thisObj));1543            }1544        },1545        ".yieldTo": {1546            "is function": function () {1547                var spy = sinon.spy();1548                assert.isFunction(spy.yieldTo);1549            },1550            "invokes first function arg for all calls": function () {1551                var spy = sinon.spy();1552                var callback = sinon.spy();1553                spy(1, 2, { success: callback });1554                spy(3, 4, { success: callback });...spy_test.js
Source:spy_test.js  
...1376                var callback = sinon.spy();1377                var thisObj = { name1: "value1", name2: "value2" };1378                spy(1, 2, callback);1379                spy(3, 4, callback);1380                spy.yieldOn(thisObj);1381                assert(callback.calledTwice);1382                assert(callback.alwaysCalledWith());1383                assert(callback.alwaysCalledOn(thisObj));1384            },1385            "throws if spy was not yet invoked": function () {1386                var spy = sinon.spy();1387                var thisObj = { name1: "value1", name2: "value2" };1388                try {1389                    spy.yieldOn(thisObj);1390                    throw new Error();1391                } catch (e) {1392                    assert.equals(e.message, "spy cannot yield since it was not yet invoked.");1393                }1394            },1395            "includes spy name in error message": function () {1396                var api = { someMethod: function () {} };1397                var spy = sinon.spy(api, "someMethod");1398                var thisObj = { name1: "value1", name2: "value2" };1399                try {1400                    spy.yieldOn(thisObj);1401                    throw new Error();1402                } catch (e) {1403                    assert.equals(e.message, "someMethod cannot yield since it was not yet invoked.");1404                }1405            },1406            "pass additional arguments": function () {1407                var spy = sinon.spy();1408                var callback = sinon.spy();1409                var array = [];1410                var object = {};1411                var thisObj = { name1: "value1", name2: "value2" };1412                spy(callback);1413                spy.yieldOn(thisObj, "abc", 123, array, object);1414                assert(callback.calledWith("abc", 123, array, object));1415                assert(callback.calledOn(thisObj));1416            }1417        },1418        "yieldTo": {1419            "is function": function () {1420                var spy = sinon.spy();1421                assert.isFunction(spy.yieldTo);1422            },1423            "invokes first function arg for all calls": function () {1424                var spy = sinon.spy();1425                var callback = sinon.spy();1426                spy(1, 2, { success: callback });1427                spy(3, 4, { success: callback });...Using AI Code Generation
1var spy = sinon.spy();2spy.yieldOn(this, 1, 2, 3);3assert(spy.calledWith(1, 2, 3));4var spy = sinon.spy();5spy.yieldTo('success', 1, 2, 3);6assert(spy.calledWith(1, 2, 3));7var spy = sinon.spy();8spy.yieldToOn('success', this, 1, 2, 3);9assert(spy.calledWith(1, 2, 3));10var spy = sinon.spy();11spy.yieldToAsync('success', 1, 2, 3);12assert(spy.calledWith(1, 2, 3));13var spy = sinon.spy();14spy.yieldToOnAsync('success', this, 1, 2, 3);15assert(spy.calledWith(1, 2, 3));16var spy = sinon.spy();17spy.callArg(0, 1, 2, 3);18assert(spy.calledWith(1, 2, 3));19var spy = sinon.spy();20spy.callArgOn(0, this, 1, 2, 3);21assert(spy.calledWith(1, 2, 3));22var spy = sinon.spy();23spy.callArgWith(0, 1, 2, 3);24assert(spy.calledWith(1, 2, 3));25var spy = sinon.spy();26spy.callArgOnWith(0, this, 1, 2, 3);27assert(spy.calledWith(1, 2, 3));28var spy = sinon.spy();29spy.callArgAsync(0, 1, 2, 3);30assert(spy.calledWith(1, 2, 3));Using AI Code Generation
1var sinon = require('sinon');2var fs = require('fs');3var spy = sinon.spy(fs, 'readFile');4spy.yieldOn('error', 'error');5spy.yieldOn('data', 'data');6spy.yieldOn('end', 'end');7var obj = {8    readFile: function (callback) {9        callback('error', 'data', 'end');10    }11};12var spy = sinon.spy(obj, 'readFile');13spy.yieldTo('error', 'error');14spy.yieldTo('data', 'data');15spy.yieldTo('end', 'end');16var sinon = require('sinon');17var fs = require('fs');18var stub = sinon.stub(fs, 'readFile');19stub.yieldsOn('error', 'error');20stub.yieldsOn('data', 'data');21stub.yieldsOn('end', 'end');22var obj = {23    readFile: function (callback) {24        callback('error', 'data', 'end');25    }26};27var stub = sinon.stub(obj, 'readFile');28stub.yieldsTo('error', 'error');29stub.yieldsTo('data', 'data');30stub.yieldsTo('end', 'end');31var sinon = require('sinon');32var fs = require('fs');33var spy = sinon.spy(fs, 'readFile');34spy.yieldOn('error', 'error');35spy.yieldOn('data', 'data');36spy.yieldOn('end', 'end');37var obj = {38    readFile: function (callback) {39        callback('error', 'data', 'end');40    }41};42var spy = sinon.spy(obj, 'readFile');43spy.yieldTo('error', 'error');44spy.yieldTo('data', 'data');45spy.yieldTo('end', 'end');46var sinon = require('sinon');47var fs = require('fs');48var stub = sinon.stub(fs, 'readFile');49stub.yieldsOn('error',Using AI Code Generation
1var callback = sinon.spy();2var obj = { method: function(arg, callback) { callback(arg); } };3var spy = sinon.spy(obj, "method");4obj.method(42, callback);5assert(spy.calledWith(42));6assert(callback.calledWith(42));Using AI Code Generation
1var sinon = require('sinon');2var assert = require('assert');3var myModule = require('./myModule');4describe('myModule', function() {5  it('should do something', function() {6    var callback = sinon.spy();7    myModule.doSomething(callback);8    assert(callback.called);9    callback.yieldOn(callback, 'hello world');10    assert(callback.calledWith('hello world'));11  });12});13module.exports = {14  doSomething: function(callback) {15    return callback('hello world');16  }17};18var sinon = require('sinon');19var assert = require('assert');20var myModule = require('./myModule');21describe('myModule', function() {22  it('should do something', function() {23    var callback = sinon.spy();24    myModule.doSomething(callback);25    assert(callback.called);26    callback.yieldTo('onSuccess', 'hello world');27    assert(callback.calledWith('hello world'));28  });29});30module.exports = {31  doSomething: function(callback) {32    return callback.onSuccess('hello world');33  }34};35var sinon = require('sinon');36var assert = require('assert');37var myModule = require('./myModule');38describe('myModule', function() {39  it('should do something', function() {40    var callback = sinon.spy();41    myModule.doSomething(callback);42    assert(callback.called);Using AI Code Generation
1var sinon = require('sinon');2var assert = require('assert');3var spy = sinon.spy(function (arg, callback) {4    callback(arg);5});6var stub = sinon.stub().callsArgWith(1, 42);7spy('foo', stub);8assert(spy.calledOnce);9assert(stub.calledOnce);10assert(stub.calledWith('foo'));11assert(stub.calledWith(42));12var sinon = require('sinon');13var assert = require('assert');14var spy = sinon.spy(function (arg, callback) {15    callback(arg);16});17var stub = sinon.stub().callsArgWith(1, 42);18spy('foo', stub);19assert(spy.calledOnce);20assert(stub.calledOnce);21assert(stub.calledWith('foo'));22assert(stub.calledWith(42));23var sinon = require('sinon');24var assert = require('assert');25var spy = sinon.spy(function (arg, callback) {26    callback(arg);27});28var stub = sinon.stub().callsArgWith(1, 42);29spy('foo', stub);30assert(spy.calledOnce);31assert(stub.calledOnce);32assert(stub.calledWith('foo'));33assert(stub.calledWith(42));34var sinon = require('sinon');35var assert = require('assert');36var spy = sinon.spy(function (arg, callback) {37    callback(arg);38});39var stub = sinon.stub().callsArgWith(1, 42);40spy('foo', stub);41assert(spy.calledOnce);42assert(stub.calledOnce);43assert(stub.calledWith('foo'));44assert(stub.calledWith(42));45var sinon = require('sinon');46var assert = require('assert');47var spy = sinon.spy(function (arg, callback) {48    callback(arg);49});50var stub = sinon.stub().callsArgWith(1, 42);51spy('foo', stub);52assert(spy.calledOnce);Using AI Code Generation
1var test = require('test.js');2describe('test', function() {3  it('should call the callback', function() {4    var callback = sinon.spy();5    test(callback);6    expect(callback).to.be.calledOnce;7  });8});9var test = require('test.js');10describe('test', function() {11  it('should call the callback', function() {12    var callback = sinon.spy();13    test(callback);14    expect(callback).to.be.calledOnce;15  });16});17var test = require('test.js');18describe('test', function() {19  it('should call the callback', function() {20    var callback = sinon.spy();21    test(callback);22    expect(callback).to.be.calledOnce;23  });24});25var test = require('test.js');26describe('test', function() {27  it('should call the callback', function() {28    var callback = sinon.spy();29    test(callback);30    expect(callback).to.be.calledOnce;31  });32});33var test = require('test.js');34describe('test', function() {35  it('should call the callback', function() {36    var callback = sinon.spy();37    test(callback);38    expect(callback).to.be.calledOnce;39  });40});41var test = require('test.js');42describe('test', function() {43  it('should call the callback', function() {44    var callback = sinon.spy();45    test(callback);46    expect(callback).to.be.calledOnce;47  });48});Using AI Code Generation
1var sinon = require('sinon');2var assert = require('chai').assert;3var myObj = {4    myFunc: function(callback) {5        callback();6    }7};8describe('myFunc', function() {9    it('should call the callback', function() {10        var spy = sinon.spy();11        myObj.myFunc(spy);12        assert(spy.calledOnce);13    });14});15describe('myFunc', function() {16    it('should call the callback', function() {17        var spy = sinon.spy();18        myObj.myFunc(spy);19        spy.yieldOn(myObj);20        assert(spy.calledOnce);21    });22});23var spy = sinon.spy();24myObj.myFunc(spy);25spy.yieldOn(myObj);26assert(spy.calledOnce);27var myObj = {28    myFunc: function(callback) {29        callback();30    }31};32describe('myFunc', function() {33    it('should call the callback', function() {34        var spy = sinon.spy();35        myObj.myFunc(spy);36        spy.yieldOn(myObj);37        assert(spy.calledOnce);38    });39});40var spy = sinon.spy();41myObj.myFunc(spy);42spy.yieldOn(myObj);43assert(spy.calledOnce);44var spy = sinon.spy();45myObj.myFunc(spy);46spy.yieldOn(myObj);47assert(spy.calledOnce);Using AI Code Generation
1var sinon = require('sinon');2var assert = require('assert');3var test = require('./test.js');4describe('test', function() {5  it('should return 2', function() {6    var spy = sinon.spy();7    test(spy);8    spy.yieldOn(spy, 1);9    assert.equal(spy.returned(2), true);10  });11});12module.exports = function(callback) {13  callback(1, function(err, result) {14    callback(result + 1);15  });16};17var sinon = require('sinon');18var assert = require('assert');19var test = require('./test.js');20describe('test', function() {21  it('should return 2', function() {22    var spy = sinon.spy();23    test(spy);24    spy.yieldOn(spy, 1);25    assert.equal(spy.returned(2), true);26  });27});28module.exports = function(callback) {29  callback(1, function(err, result) {30    callback(result + 1);31  });32};33var sinon = require('sinon');34var assert = require('assert');35var test = require('./test.js');36describe('test', function() {37  it('should return 2', function() {38    var spy = sinon.spy();39    test(spy);40    spy.yieldOn(spy, 1);41    assert.equal(spy.returned(2), true);42  });43});44module.exports = function(callback) {45  callback(1, function(err, result) {46    callback(result + 1);47  });48};Using AI Code Generation
1var sinon = require('sinon');2var assert = require('assert');3var myModule = require('./myModule.js');4describe('myModule', function() {5  it('should call the callback with the expected arguments', function() {6    var callback = sinon.spy();7    var spy = sinon.spy(myModule, 'myMethod');8    spy.yieldOn(spy, 'error', 'result');9    myModule.myMethod(callback);10    assert(callback.calledWith('error', 'result'));11  });12});13module.exports = {14  myMethod: function(callback) {15    callback('error', 'result');16  }17};18{19  "scripts": {20  },21  "dependencies": {22  },23  "devDependencies": {24  }25}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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