KaneAI - World’s First E2E Software Testing Agent.Signup for Private Beta Join TestMu Conference

How to use mockWrite method in differencify

Best JavaScript code snippet using differencify

index.spec.ts

Source:index.spec.ts

1import { join } from 'path';2import { createPref, Pref } from './index';3import * as io from './utils/io';4const mockRead = jest.spyOn(io, 'readFromDisk').mockImplementation();5const mockWrite = jest.spyOn(io, 'writeToDisk').mockImplementation();6afterAll(() => {7  jest.restoreAllMocks();8});9beforeEach(() => {10  mockRead.mockImplementation();11  mockWrite.mockImplementation();12});13describe('exports', () => {14  it('exports expected items', () => {15    // eslint-disable-next-line @typescript-eslint/no-var-requires16    const allExports = require('./index');17    expect(allExports).toHaveProperty('Pref');18    expect(allExports).toHaveProperty('getDefaultCrypto');19  });20});21describe('singleton instance', () => {22  beforeEach(() => {23    jest.clearAllMocks();24  });25  it('Pref is a singleton instance', () => {26    // eslint-disable-next-line @typescript-eslint/no-var-requires27    const Pref2 = require('./index').Pref;28    expect(Pref).toBe(Pref2);29  });30  it('sets, gets, resets', () => {31    expect(Pref.get('foo')).toBe(undefined);32    Pref.set('foo', 'bar');33    expect(mockWrite).toHaveBeenLastCalledWith(34      Pref.filePath.replace('/config.pref', ''),35      'config.pref',36      expect.any(String)37    );38    expect(Pref.get('foo')).toBe('bar');39    Pref.reset('foo');40    expect(mockWrite).toHaveBeenLastCalledWith(41      Pref.filePath.replace('/config.pref', ''),42      'config.pref',43      expect.any(String)44    );45    expect(Pref.get('foo')).toBe(undefined);46    expect(mockWrite).toBeCalledTimes(2);47    expect(mockRead).toBeCalledTimes(1);48  });49  it('writes, reads', () => {50    let file: string;51    mockWrite.mockImplementation((dir, name, text) => {52      file = text;53    });54    Pref.write();55    expect(mockWrite).toBeCalledTimes(1);56    expect(mockWrite).toBeCalledWith(57      Pref.filePath.replace('/config.pref', ''),58      'config.pref',59      expect.any(String)60    );61    mockRead.mockReturnValueOnce(file);62    Pref.read();63    expect(mockRead).toBeCalledTimes(1);64    expect(mockRead).toReturnWith(expect.any(String));65  });66});67describe('create instance', () => {68  const encoder = (s: string) => s;69  const decoder = (s: string) => s;70  const SAFE_OPTIONS = {71    name: 'com.example.test',72    dirPath: './dir/path',73    filename: 'test.pref',74    encoder,75    decoder,76  };77  beforeEach(() => {78    jest.clearAllMocks();79  });80  it('does not throw error', () => {81    expect(() =>82      createPref({83        defaults: { a: 'memory' },84        ...SAFE_OPTIONS,85      })86    ).not.toThrow();87  });88  it('creates defaults and gets defaults', () => {89    mockRead.mockImplementationOnce(() => {90      throw new Error();91    });92    const { get } = createPref({93      defaults: { a: 'a' },94      ...SAFE_OPTIONS,95    });96    expect(mockRead).toHaveBeenCalledTimes(1);97    expect(mockRead).not.toReturn();98    expect(mockWrite).not.toHaveBeenCalled();99    expect(get('a')).toBe('a');100  });101  it('falls back on defaults if error', () => {102    mockRead.mockReturnValueOnce('not encrypted text');103    const { get } = createPref({104      defaults: { a: 'a' },105      ...SAFE_OPTIONS,106    });107    expect(mockRead).toHaveBeenCalled();108    expect(mockWrite).not.toHaveBeenCalled();109    expect(get('a')).toBe('a');110  });111  it('reads and extends defaults', () => {112    mockRead.mockReturnValueOnce(JSON.stringify({ a: 'disk' }));113    const { get } = createPref({114      defaults: { a: 'default', b: 'b' },115      ...SAFE_OPTIONS,116    });117    expect(mockRead).toHaveBeenCalled();118    expect(get('a')).toBe('disk');119  });120  it("dose not write if state doesn't change", () => {121    const { set } = createPref({122      defaults: { a: 'a' },123      ...SAFE_OPTIONS,124    });125    expect(mockWrite).not.toHaveBeenCalled();126    set('a', 'a');127    expect(mockWrite).not.toHaveBeenCalled();128  });129  it('writes once state has changed', () => {130    const { set } = createPref({131      defaults: { a: 'a' },132      ...SAFE_OPTIONS,133    });134    expect(mockWrite).not.toHaveBeenCalled();135    set('a', 'b');136    expect(mockWrite).toHaveBeenCalledTimes(1);137    expect(mockWrite).toHaveBeenCalledWith(138      SAFE_OPTIONS.dirPath,139      SAFE_OPTIONS.filename,140      expect.any(String)141    );142  });143  it('filePath exists and is overwritten', () => {144    const { filePath } = createPref({145      defaults: { a: 'a' },146      ...SAFE_OPTIONS,147    });148    expect(filePath).toBe(join(SAFE_OPTIONS.dirPath, SAFE_OPTIONS.filename));149  });150  it('gets, sets, and resets key from state', () => {151    const { get, set, reset } = createPref({152      defaults: { a: 'default' },153      ...SAFE_OPTIONS,154    });155    expect(mockRead).toHaveBeenCalledTimes(1);156    expect(mockWrite).not.toHaveBeenCalled();157    expect(get('a')).toEqual('default');158    set('a', 'disk');159    expect(mockWrite).toHaveBeenCalledTimes(1);160    expect(mockWrite).toHaveBeenCalledWith(161      SAFE_OPTIONS.dirPath,162      SAFE_OPTIONS.filename,163      JSON.stringify({ a: 'disk' })164    );165    expect(get('a')).toEqual('disk');166    expect(mockRead).toHaveBeenCalledTimes(1);167    reset('a');168    expect(mockWrite).toHaveBeenCalledTimes(2);169    expect(mockWrite).toHaveBeenCalledWith(170      SAFE_OPTIONS.dirPath,171      SAFE_OPTIONS.filename,172      JSON.stringify({ a: 'default' })173    );174    expect(get('a')).toEqual('default');175    expect(mockRead).toHaveBeenCalledTimes(1);176  });177  it('never writes when equality is `false`', () => {178    const { set, reset } = createPref({179      defaults: { a: 'default' },180      ...SAFE_OPTIONS,181      equality: false,182    });183    set('a', 'b');184    set('a', 'c');185    set('a', 'd');186    set('a', 'e');187    reset('a');188    expect(mockWrite).not.toBeCalled();189  });190  it('always writes when equality is `true`', () => {191    const { set, reset } = createPref({192      defaults: { a: 'default' },193      ...SAFE_OPTIONS,194      equality: true,195    });196    set('a', 'b');197    set('a', 'c');198    set('a', 'd');199    set('a', 'e');200    reset('a');201    expect(mockWrite).toBeCalledTimes(5);202  });...

queueMap.test.ts

Source:queueMap.test.ts

...18        const queueMap = new QueueMap();19        const mockWrite = jest.fn();20        const queueId = "1";21        const sleepThenReturn = ms => async (...params) => {22            await mockWrite(...params);23            await sleep(ms);24        }25        const a = ["a", 1];26        const b = ["b", 2];27        const c = ["c", 3];28        const d = ["d", 4];29        const expected = [b, d]30        queueMap.enque(queueId, a);31        queueMap.enque(queueId, b);32        queueMap.on(queueId, sleepThenReturn(1000), params => params);33        queueMap.enque(queueId, c);34        queueMap.enque(queueId, d);35        await sleep(2000);36        expect(mockWrite.mock.calls.length).toBe(2);37        expect([mockWrite.mock.calls[0], mockWrite.mock.calls[1]]).toEqual(expected);38    })39    test("prevent call on twice.", async () => {40        const queueMap = new QueueMap();41        const queueId = "1";42        const mockWrite = jest.fn();43        const sleepThenReturn = ms => async (...params) => {44            await mockWrite(...params);45            await sleep(ms);46        }47        const a = ["a", 1];48        const b = ["b", 2];49        const c = ["c", 3];50        const d = ["d", 4];51        const expected = [b, d]52        queueMap.enque(queueId, a);53        queueMap.enque(queueId, b);54        queueMap.on(queueId, sleepThenReturn(1000), params => params);55        queueMap.enque(queueId, c);56        queueMap.on(queueId, sleepThenReturn(1000), params => params);57        queueMap.enque(queueId, d);58        await sleep(2000);59        expect(mockWrite.mock.calls.length).toBe(2);60        expect([mockWrite.mock.calls[0], mockWrite.mock.calls[1]]).toEqual(expected);61    })62    test("read last element.", async () => {63        const queueMap = new QueueMap();64        const queueId = "1";65        const f = jest.fn();66        const sleepThenReturn = ms => async (...params) => {67            await f(...params);68            await sleep(ms);69        }70        const a = ["a", 1];71        const b = ["b", 2];72        const c = ["c", 3];73        const d = ["d", 4];74        queueMap.enque(queueId, a);75        queueMap.enque(queueId, b);76        queueMap.on(queueId, sleepThenReturn(1000), params => params);77        queueMap.enque(queueId, c);78        queueMap.enque(queueId, d);79        expect(queueMap.getLast(queueId)).toEqual(d);80    })81    test("delete after write finished", async () => {82        const mockCallback = jest.fn();83        const mockWrite = jest.fn();84        const queueMap = new QueueMap();85        const queueId = "1";86        const mockAsync = ms => async (...params) => {87            await mockWrite(...params);88            await sleep(ms);89        }90        const a = ["a", 1];91        const b = ["b", 2];92        const c = ["c", 3];93        const d = ["d", 4];94        queueMap.enque(queueId, a);95        queueMap.enque(queueId, b);96        queueMap.on(queueId, mockAsync(1000));97        queueMap.enque(queueId, c);98        queueMap.enque(queueId, d);99        const args = [a, b];100        queueMap.callAfterLoop(queueId, mockCallback, args);101        await sleep(3000);...

Using AI Code Generation

1import { mockWrite } from 'differencify';2mockWrite();3import { mockRead } from 'differencify';4mockRead();5import { mockWrite } from 'differencify';6mockWrite();7import { mockRead } from 'differencify';8mockRead();9import { mockWrite } from 'differencify';10mockWrite();11import { mockRead } from 'differencify';12mockRead();13import { mockWrite } from 'differencify';14mockWrite();15import { mockRead } from 'differencify';16mockRead();17import { mockWrite } from 'differencify';18mockWrite();19import { mockRead } from 'differencify';20mockRead();21import { mockWrite } from 'differencify';22mockWrite();23import { mockRead } from 'differencify';24mockRead();25import { mockWrite } from 'differencify';26mockWrite();27import { mockRead } from 'differencify';28mockRead();29import { mockWrite } from 'differencify';30mockWrite();31import { mockRead } from 'differencify';32mockRead();33import { mockWrite } from 'differencify';34mockWrite();35import { mockRead } from 'differencify';36mockRead();37import { mockWrite } from 'differencify';

Using AI Code Generation

1const differencify = require('differencify');2const { mockWrite } = differencify;3const differencify = require('differencify');4const { mockWrite } = differencify;5const differencify = require('differencify');6const { mockWrite } = differencify;7const differencify = require('differencify');8const { mockWrite } = differencify;9const differencify = require('differencify');10const { mockWrite } = differencify;11const differencify = require('differencify');12const { mockWrite } = differencify;13const differencify = require('differencify');14const { mockWrite } = differencify;15const differencify = require('differencify');16const { mockWrite } = differencify;17const differencify = require('differencify');18const { mockWrite } = differencify;19const differencify = require('differencify');20const { mockWrite } = differencify;

Using AI Code Generation

1const differencify = require('differencify');2const { mockWrite } = differencify;3const { mockWrite } = require('differencify');4import { mockWrite } from 'differencify';5import differencify from 'differencify';6const { mockWrite } = differencify;7import differencify from 'differencify';8const { mockWrite } = differencify;9const differencify = require('differencify');10const { mockWrite } = differencify;11const { mockWrite } = require('differencify');12import { mockWrite } from 'differencify';13import differencify from 'differencify';14const { mockWrite } = differencify;15import differencify from 'differencify';16const { mockWrite } = differencify;17const differencify = require('differencify');18const { mockWrite } = differencify;19const { mockWrite } = require('differencify');20import { mockWrite } from 'differencify';21import differencify from 'differencify';22const { mockWrite } = differencify;23import differencify from 'differencify';24const { mockWrite } = differencify;25const differencify = require('differencify');26const { mockWrite } = differencify;27const { mockWrite } = require('differencify');

Using AI Code Generation

1const mockWrite = require('differencify').mockWrite;2const differencify = require('differencify').default;3const differencifyConfig = require('./differencify.json');4const differencifyInstance = differencify(differencifyConfig);5const mockWrite = require('differencify').mockWrite;6const differencify = require('differencify').default;7const differencifyConfig = require('./differencify.json');8const differencifyInstance = differencify(differencifyConfig);9mockWrite(differencifyInstance, 'test');10const mockWrite = require('differencify').mockWrite;11const differencify = require('differencify').default;12const differencifyConfig = require('./differencify.json');13const differencifyInstance = differencify(differencifyConfig);14mockWrite(differencifyInstance, 'test');15const mockWrite = require('differencify').mockWrite;16const differencify = require('differencify').default;17const differencifyConfig = require('./differencify.json');18const differencifyInstance = differencify(differencifyConfig);19mockWrite(differencifyInstance, 'test');20const mockWrite = require('differencify').mockWrite;21const differencify = require('differencify').default;22const differencifyConfig = require('./differencify.json');23const differencifyInstance = differencify(differencifyConfig);24mockWrite(differencifyInstance, 'test');

Using AI Code Generation

1const differencify = require('differencify');2const differencifyConfig = require('./differencifyConfig.js');3const differencifyInstance = differencify.init(differencifyConfig);4const differencify = require('differencify');5const differencifyConfig = require('./differencifyConfig.js');6const differencifyInstance = differencify.init(differencifyConfig);7const differencifyConfig = {8}9const differencifyConfig = {10}11const differencify = require('differencify');12const differencifyConfig = require('./differencifyConfig.js');13const differencifyInstance = differencify.init(differencifyConfig);14const differencify = require('differencify');15const differencifyConfig = require('./differencifyConfig.js');16const differencifyInstance = differencify.init(differencifyConfig);17const differencifyConfig = {18}19const differencifyConfig = {20}21const differencify = require('differencify');22const differencifyConfig = require('./differencifyConfig.js');23const differencifyInstance = differencify.init(differencifyConfig);24const differencify = require('differencify');25const differencifyConfig = require('./differencifyConfig.js');26const differencifyInstance = differencify.init(differencifyConfig);27const differencifyConfig = {28}

Using AI Code Generation

1const differencify = require('differencify');2differencify.mockWrite = true;3const assert = require('assert');4const app = require('./app');5describe('app', function() {6  it('should render page', async function() {7    const page = await app.goto(url);8    const screenshot = await page.screenshot();9    assert.ok(await differencify.compare(screenshot, 'homepage'));10  });11});12const differencify = require('differencify');13differencify.mockWrite = true;14const assert = require('assert');15const app = require('./app');16describe('app', function() {17  it('should render page', async function() {18    const page = await app.goto(url);19    const screenshot = await page.screenshot();20    assert.ok(await differencify.compare(screenshot, 'homepage'));21  });22});23differencify.compare(screenshot, 'homepage', 0.01);

Using AI Code Generation

1const differencify = require('differencify');2const differencifyInstance = differencify.init({});3const mockWrite = jest.fn();4differencifyInstance.mockWrite = mockWrite;5const { test } = differencifyInstance;6test('test', async () => {7  const image = await page.screenshot();8  expect(image).toMatchImageSnapshot();9});10describe('test', () => {11  it('test', async () => {12    const image = await page.screenshot();13    expect(image).toMatchImageSnapshot();14  });15});16describe('test', () => {17  it('test', async () => {18    const image = await page.screenshot();19    expect(image).toMatchImageSnapshot();20  });21});22const differencify = require('differencify');23const differencifyInstance = differencify.init({});24describe('test', () => {25  it('test', async () => {26    const image = await page.screenshot();27    expect(image).toMatchImageSnapshot();28  });29});30const differencify = require('differencify');31const differencifyInstance = differencify.init({});32describe('test', () => {33  it('test', async () => {34    const image = await page.screenshot();35    expect(image).toMatchImageSnapshot();36  });37});38const differencify = require('differencify');39const differencifyInstance = differencify.init({});40describe('test', () => {41  it('test', async () => {42    const image = await page.screenshot();43    expect(image).toMatchImageSnapshot();44  });45});46const differencify = require('differencify');47const differencifyInstance = differencify.init({});48describe('test', () => {49  it('test', async () => {50    const image = await page.screenshot();51    expect(image).toMatchImageSnapshot();52  });53});54const differencify = require('differenc

Using AI Code Generation

1const differencify = require('differencify');2const { mockWrite } = differencify;3const fs = require('fs');4const path = require('path');5const { expect } = require('chai');6mockWrite();7const { build } = require('gluegun');8describe('differencify', () => {9  let cli;10  beforeAll(async () => {11    cli = build()12      .brand('differencify')13      .src(__dirname)14      .plugins('./node_modules', { matching: 'differencify-*', hidden: true })15      .create();16  });17  it('takes a screenshot', async () => {18    const result = await cli.run(['screenshot']);19    expect(result).toEqual(0);20    expect(fs.existsSync(path.resolve(__dirname, 'test.png'))).toEqual(true);21  });22});23const { screenshot } = require('differencify');24module.exports = {25  run: async toolbox => {26    const { print } = toolbox;27    print.info('Taking screenshot');28    await screenshot({29    });30  },31};32{33  "scripts": {34  },35  "dependencies": {36  },37  "devDependencies": {38  }39}40module.exports = {41  testMatch: ['**/?(*.)+(spec|test).[jt]s?(x)'],42};

Using AI Code Generation

1const { mockWrite } = require('differencify')2mockWrite()3const differencify = require('differencify')4const { browser } = require('playwright')5const run = async () => {6  const page = await browser.newPage()7  await page.screenshot({ path: 'google.png' })8  await page.close()9}10run()11const { mockWrite } = require('differencify')12mockWrite()13const differencify = require('differencify')14const { browser } = require('playwright')15const run = async () => {16  const page = await browser.newPage()17  await page.screenshot({ path: 'google.png' })18  await page.close()19}20run()21const { mockWrite } = require('differencify')22mockWrite()23const differencify = require('differencify')24const { browser } = require('playwright')25const run = async () => {26  const page = await browser.newPage()27  await page.screenshot({ path: 'google.png' })28  await page.close()29}30run()31const { mockWrite } = require('differencify')32mockWrite()33const differencify = require('differencify')34const { browser } = require('playwright')35const run = async () => {36  const page = await browser.newPage()37  await page.screenshot({ path: 'google.png' })38  await page.close()39}40run()41const { mockWrite } = require('differencify')42mockWrite()43const differencify = require('differencify')44const { browser } = require('playwright')45const run = async () => {46  const page = await browser.newPage()

Automation Testing Tutorials

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.