Initial commit

Author: Carlos Fernandez Cabrero

.editorconfig

@@ -0,0 +1,12 @@
+# EditorConfig is awesome: https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = false
+insert_final_newline = false

.eslintrc.js

@@ -0,0 +1,22 @@
+module.exports = {
+  env: {
+    browser: true,
+    es2021: true
+  },
+  extends: [
+    'plugin:cypress/recommended',
+    'plugin:react/recommended',
+    'standard'
+  ],
+  parserOptions: {
+    ecmaFeatures: {
+      jsx: true
+    },
+    ecmaVersion: 'latest',
+    sourceType: 'module'
+  },
+  plugins: ['react', 'cypress'],
+  rules: {
+    'react/react-in-jsx-scope': 'off'
+  }
+}

.gitignore

@@ -0,0 +1,26 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+package-lock.json
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?

.prettierrc

@@ -0,0 +1,5 @@
+{
+  "singleQuote": true,
+  "trailingComma": "none",
+  "semi": false
+}

__test__/integration/components/App.test.jsx

@@ -0,0 +1,55 @@
+import { cleanup, render, screen } from '@testing-library/react'
+import userEvent from '@testing-library/user-event'
+import App from 'components/App'
+import { beforeEach, describe, expect, test, vi } from 'vitest'
+
+const mockIncrement = vi.fn()
+const mockDecrement = vi.fn()
+const mockReset = vi.fn()
+
+vi.mock('hooks/useCounter', () => ({
+  useCounter: () => ({
+    counterValue: 0,
+    increment: mockIncrement,
+    decrement: mockDecrement,
+    reset: mockReset
+  })
+}))
+
+describe('Pruebas sobre el componente <App/>', () => {
+  beforeEach(() => {
+    cleanup()
+  })
+
+  test('debe incrementar el valor del contador en 1 cuando se pulsa el botón de Incrementar', () => {
+    render(<App />)
+
+    const button = screen.getByRole('button', { name: /increment/i })
+
+    userEvent.click(button)
+
+    expect(mockIncrement).toBeCalledTimes(1)
+    expect(mockIncrement).toBeCalledWith(1)
+  })
+
+  test('debe decrementar el valor del contador en 1 cuando se pulsa el botón de Decrement', () => {
+    render(<App />)
+
+    const button = screen.getByRole('button', { name: /decrement/i })
+
+    userEvent.click(button)
+
+    expect(mockDecrement).toBeCalledTimes(1)
+    expect(mockDecrement).toBeCalledWith(1)
+  })
+
+  test('debe resetear el valor del contador a 0 cuando se pulsa el botón de Reset', () => {
+    render(<App />)
+
+    const resetButton = screen.getByRole('button', { name: /reset/i })
+
+    userEvent.click(resetButton)
+
+    expect(mockReset).toBeCalledTimes(1)
+  })
+})

__test__/unitary/components/App.test.jsx

@@ -0,0 +1,20 @@
+import { render, screen } from '@testing-library/react'
+import App from 'components/App'
+import { describe, test, vi } from 'vitest'
+
+vi.mock('components/CounterButton', () => ({
+  __esModule: true,
+  default: () => <></>
+}))
+
+vi.mock('hooks/useCounter', () => ({
+  useCounter: () => ({ counterValue: 0 })
+}))
+
+describe('Pruebas sobre el componente <App/>', () => {
+  test('debe mostrar por defecto el valor inicial pasado al hook useCounter', () => {
+    render(<App/>)
+
+    screen.getByText(0)
+  })
+})

__test__/unitary/components/CounterButton.test.jsx

@@ -0,0 +1,28 @@
+import { randText } from '@ngneat/falso'
+import { render, screen } from '@testing-library/react'
+import userEvent from '@testing-library/user-event'
+import CounterButton from 'components/CounterButton'
+import { describe, expect, test, vi } from 'vitest'
+
+describe('Pruebas sobre el componente <CounterButton/>', () => {
+  test('debe llamar a la función que se le pasa en la props cuando se hace click', () => {
+    const mockAction = vi.fn()
+    const text = randText()
+
+    render(<CounterButton text={text} action={mockAction} />)
+
+    const button = screen.getByRole('button', { name: text })
+
+    userEvent.click(button)
+
+    expect(mockAction).toBeCalledTimes(1)
+  })
+
+  test('debe mostrar el texto que recibe en las props', () => {
+    const text = randText()
+
+    render(<CounterButton text={text} action={vi.fn()} />)
+
+    screen.getByText(text)
+  })
+})

cypress.json

@@ -0,0 +1,3 @@
+{
+  "baseUrl": "http://localhost:3000"
+}

cypress/fixtures/example.json

@@ -0,0 +1,5 @@
+{
+  "name": "Using fixtures to represent data",
+  "email": "hello@cypress.io",
+  "body": "Fixtures are a great way to mock data for responses to routes"
+}

cypress/integration/App.test.js

@@ -0,0 +1,24 @@
+describe('Pruebas sobre la APP', () => {
+  beforeEach(() => {
+    cy.visit('/')
+  })
+
+  it('debe mostrar por defecto el valor 0 en el contador', () => {
+    cy.get('[data-test-id=counter-value]').should('have.text', '0')
+  })
+
+  it('debe incrementar el valor en 1 cuando se pulsa el botón Increment', () => {
+    cy.get('[data-test-id=btn-increment]').click()
+    cy.get('[data-test-id=counter-value]').should('have.text', '1')
+  })
+
+  it('debe decrementar el valor en 1 cuando se pulsa el botón Decrement', () => {
+    cy.get('[data-test-id=btn-decrement]').click()
+    cy.get('[data-test-id=counter-value]').should('have.text', '-1')
+  })
+
+  it('debe resetear el valor en 1 cuando se pulsa el botón Reset', () => {
+    cy.get('[data-test-id=btn-reset]').click()
+    cy.get('[data-test-id=counter-value]').should('have.text', '0')
+  })
+})

cypress/plugins/index.js

@@ -0,0 +1,22 @@
+/// <reference types="cypress" />
+// ***********************************************************
+// This example plugins/index.js can be used to load plugins
+//
+// You can change the location of this file or turn off loading
+// the plugins file with the 'pluginsFile' configuration option.
+//
+// You can read more here:
+// https://on.cypress.io/plugins-guide
+// ***********************************************************
+
+// This function is called when a project is opened or re-opened (e.g. due to
+// the project's config changing)
+
+/**
+ * @type {Cypress.PluginConfig}
+ */
+// eslint-disable-next-line no-unused-vars
+module.exports = (on, config) => {
+  // `on` is used to hook into various events Cypress emits
+  // `config` is the resolved Cypress config
+}

cypress/support/commands.js

@@ -0,0 +1,25 @@
+// ***********************************************
+// This example commands.js shows you how to
+// create various custom commands and overwrite
+// existing commands.
+//
+// For more comprehensive examples of custom
+// commands please read more here:
+// https://on.cypress.io/custom-commands
+// ***********************************************
+//
+//
+// -- This is a parent command --
+// Cypress.Commands.add('login', (email, password) => { ... })
+//
+//
+// -- This is a child command --
+// Cypress.Commands.add('drag', { prevSubject: 'element'}, (subject, options) => { ... })
+//
+//
+// -- This is a dual command --
+// Cypress.Commands.add('dismiss', { prevSubject: 'optional'}, (subject, options) => { ... })
+//
+//
+// -- This will overwrite an existing command --
+// Cypress.Commands.overwrite('visit', (originalFn, url, options) => { ... })

cypress/support/index.js

@@ -0,0 +1,20 @@
+// ***********************************************************
+// This example support/index.js is processed and
+// loaded automatically before your test files.
+//
+// This is a great place to put global configuration and
+// behavior that modifies Cypress.
+//
+// You can change the location of this file or turn off
+// automatically serving support files with the
+// 'supportFile' configuration option.
+//
+// You can read more here:
+// https://on.cypress.io/configuration
+// ***********************************************************
+
+// Import commands.js using ES2015 syntax:
+import './commands'
+
+// Alternatively you can use CommonJS syntax:
+// require('./commands')

cypress/videos/App.test.js.mp4

@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/svg+xml" href="/src/favicon.svg" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Vite App</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.jsx"></script>
+  </body>
+</html>

index.html

@@ -0,0 +1,5 @@
+{
+  "compilerOptions": {
+    "baseUrl": "src"
+  }
+}

jsconfig.json

@@ -0,0 +1,36 @@
+{
+  "name": "react-counter-app",
+  "private": true,
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "test": "vitest",
+    "cy:open": "cypress open",
+    "cy:run": "cypress run",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "react": "^17.0.2",
+    "react-dom": "^17.0.2",
+    "tailwindcss": "3.0.23"
+  },
+  "devDependencies": {
+    "@ngneat/falso": "2.26.1",
+    "@testing-library/react": "12.1.3",
+    "@testing-library/react-hooks": "7.0.2",
+    "@testing-library/user-event": "13.5.0",
+    "@vitejs/plugin-react": "^1.0.7",
+    "cypress": "9.5.0",
+    "eslint": "^7.32.0",
+    "eslint-config-standard": "^16.0.3",
+    "eslint-plugin-cypress": "2.12.1",
+    "eslint-plugin-import": "^2.25.4",
+    "eslint-plugin-node": "^11.1.0",
+    "eslint-plugin-promise": "^5.2.0",
+    "eslint-plugin-react": "^7.28.0",
+    "jsdom": "^19.0.0",
+    "prop-types": "15.8.1",
+    "vite": "^2.8.0",
+    "vitest": "0.4.2"
+  }
+}

package.json

@@ -0,0 +1,6 @@
+module.exports = {
+  plugins: {
+    tailwindcss: {},
+    autoprefixer: {}
+  }
+}

postcss.config.js

@@ -0,0 +1,35 @@
+import CounterButton from 'components/CounterButton'
+import { useCounter } from 'hooks/useCounter'
+
+const App = () => {
+  const { counterValue, increment, decrement, reset } = useCounter(0)
+
+  function handleIncrement () {
+    increment(1)
+  }
+
+  function handleDecrement () {
+    decrement(1)
+  }
+
+  function handleReset () {
+    reset()
+  }
+
+  return (
+    <div className="bg-gray-800 text-white h-screen px-6 pb-6 pt-40 text-center">
+      <p className="text-4xl mb-12">Counter App</p>
+      <p data-test-id="counter-value" className="text-8xl mb-8">
+        {counterValue}
+      </p>
+
+      <div className="flex items-center gap-6 justify-center">
+        <CounterButton text="Increment" action={handleIncrement} />
+        <CounterButton text="Reset" action={handleReset} />
+        <CounterButton text="Decrement" action={handleDecrement} />
+      </div>
+    </div>
+  )
+}
+
+export default App