updated

Author: webmasterdevlin

chapter-4/finished-installing-libraries-boilerplate/.env.production

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+GENERATE_SOURCEMAP=false

chapter-4/finished-installing-libraries-boilerplate/.eslintignore

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+cypress

chapter-4/finished-installing-libraries-boilerplate/.npmrc

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+save-exact = true

chapter-4/finished-installing-libraries-boilerplate/cypress/fixtures/example.json

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+{
+  "name": "Using fixtures to represent data",
+  "email": "[email protected]",
+  "body": "Fixtures are a great way to mock data for responses to routes"
+}

chapter-4/finished-installing-libraries-boilerplate/cypress/integration/examples/querying.spec.js

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+/// <reference types="cypress" />
+
+context('Querying', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/commands/querying')
+  })
+
+  // The most commonly used query is 'cy.get()', you can
+  // think of this like the '$' in jQuery
+
+  it('cy.get() - query DOM elements', () => {
+    // https://on.cypress.io/get
+
+    cy.get('#query-btn').should('contain', 'Button')
+
+    cy.get('.query-btn').should('contain', 'Button')
+
+    cy.get('#querying .well>button:first').should('contain', 'Button')
+    //              ↲
+    // Use CSS selectors just like jQuery
+
+    cy.get('[data-test-id="test-example"]').should('have.class', 'example')
+
+    // 'cy.get()' yields jQuery object, you can get its attribute
+    // by invoking `.attr()` method
+    cy.get('[data-test-id="test-example"]')
+      .invoke('attr', 'data-test-id')
+      .should('equal', 'test-example')
+
+    // or you can get element's CSS property
+    cy.get('[data-test-id="test-example"]')
+      .invoke('css', 'position')
+      .should('equal', 'static')
+
+    // or use assertions directly during 'cy.get()'
+    // https://on.cypress.io/assertions
+    cy.get('[data-test-id="test-example"]')
+      .should('have.attr', 'data-test-id', 'test-example')
+      .and('have.css', 'position', 'static')
+  })
+
+  it('cy.contains() - query DOM elements with matching content', () => {
+    // https://on.cypress.io/contains
+    cy.get('.query-list')
+      .contains('bananas')
+      .should('have.class', 'third')
+
+    // we can pass a regexp to `.contains()`
+    cy.get('.query-list')
+      .contains(/^b\w+/)
+      .should('have.class', 'third')
+
+    cy.get('.query-list')
+      .contains('apples')
+      .should('have.class', 'first')
+
+    // passing a selector to contains will
+    // yield the selector containing the text
+    cy.get('#querying')
+      .contains('ul', 'oranges')
+      .should('have.class', 'query-list')
+
+    cy.get('.query-button')
+      .contains('Save Form')
+      .should('have.class', 'btn')
+  })
+
+  it('.within() - query DOM elements within a specific element', () => {
+    // https://on.cypress.io/within
+    cy.get('.query-form').within(() => {
+      cy.get('input:first').should('have.attr', 'placeholder', 'Email')
+      cy.get('input:last').should('have.attr', 'placeholder', 'Password')
+    })
+  })
+
+  it('cy.root() - query the root DOM element', () => {
+    // https://on.cypress.io/root
+
+    // By default, root is the document
+    cy.root().should('match', 'html')
+
+    cy.get('.query-ul').within(() => {
+      // In this within, the root is now the ul DOM element
+      cy.root().should('have.class', 'query-ul')
+    })
+  })
+
+  it('best practices - selecting elements', () => {
+    // https://on.cypress.io/best-practices#Selecting-Elements
+    cy.get('[data-cy=best-practices-selecting-elements]').within(() => {
+      // Worst - too generic, no context
+      cy.get('button').click()
+
+      // Bad. Coupled to styling. Highly subject to change.
+      cy.get('.btn.btn-large').click()
+
+      // Average. Coupled to the `name` attribute which has HTML semantics.
+      cy.get('[name=submission]').click()
+
+      // Better. But still coupled to styling or JS event listeners.
+      cy.get('#main').click()
+
+      // Slightly better. Uses an ID but also ensures the element
+      // has an ARIA role attribute
+      cy.get('#main[role=button]').click()
+
+      // Much better. But still coupled to text content that may change.
+      cy.contains('Submit').click()
+
+      // Best. Insulated from all changes.
+      cy.get('[data-cy=submit]').click()
+    })
+  })
+})

chapter-4/finished-installing-libraries-boilerplate/cypress/integration/examples/viewport.spec.js

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+/// <reference types="cypress" />
+
+context('Viewport', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/commands/viewport')
+  })
+
+  it('cy.viewport() - set the viewport size and dimension', () => {
+    // https://on.cypress.io/viewport
+
+    cy.get('#navbar').should('be.visible')
+    cy.viewport(320, 480)
+
+    // the navbar should have collapse since our screen is smaller
+    cy.get('#navbar').should('not.be.visible')
+    cy.get('.navbar-toggle').should('be.visible').click()
+    cy.get('.nav').find('a').should('be.visible')
+
+    // lets see what our app looks like on a super large screen
+    cy.viewport(2999, 2999)
+
+    // cy.viewport() accepts a set of preset sizes
+    // to easily set the screen to a device's width and height
+
+    // We added a cy.wait() between each viewport change so you can see
+    // the change otherwise it is a little too fast to see :)
+
+    cy.viewport('macbook-15')
+    cy.wait(200)
+    cy.viewport('macbook-13')
+    cy.wait(200)
+    cy.viewport('macbook-11')
+    cy.wait(200)
+    cy.viewport('ipad-2')
+    cy.wait(200)
+    cy.viewport('ipad-mini')
+    cy.wait(200)
+    cy.viewport('iphone-6+')
+    cy.wait(200)
+    cy.viewport('iphone-6')
+    cy.wait(200)
+    cy.viewport('iphone-5')
+    cy.wait(200)
+    cy.viewport('iphone-4')
+    cy.wait(200)
+    cy.viewport('iphone-3')
+    cy.wait(200)
+
+    // cy.viewport() accepts an orientation for all presets
+    // the default orientation is 'portrait'
+    cy.viewport('ipad-2', 'portrait')
+    cy.wait(200)
+    cy.viewport('iphone-4', 'landscape')
+    cy.wait(200)
+
+    // The viewport will be reset back to the default dimensions
+    // in between tests (the  default can be set in cypress.json)
+  })
+})

chapter-4/finished-installing-libraries-boilerplate/internals/generators/container/selectors.ts.hbs

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+import { createSelector } from '@reduxjs/toolkit';
+
+import { RootState } from 'types';
+import { initialState } from './slice';
+
+const selectDomain = (state: RootState) => state.{{ camelCase ComponentName }} || initialState;
+
+export const select{{ properCase ComponentName }} = createSelector(
+  [selectDomain],
+  {{ camelCase ComponentName }}State => {{ camelCase ComponentName }}State,
+);

chapter-4/finished-installing-libraries-boilerplate/src/app/containers/HomePage/Loadable.tsx

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+/**
+ * Asynchronously loads the component for HomePage
+ */
+
+import { lazyLoad } from 'utils/loadable';
+
+export const HomePage = lazyLoad(
+  () => import('./index'),
+  module => module.HomePage,
+);

chapter-4/finished-installing-libraries-boilerplate/src/setupTests.ts

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+// jest-dom adds custom jest matchers for asserting on DOM nodes.
+// allows you to do things like:
+// expect(element).toHaveTextContent(/react/i)
+// learn more: https://github.com/testing-library/jest-dom
+import '@testing-library/jest-dom/extend-expect';
+
+import 'react-app-polyfill/ie11';
+import 'react-app-polyfill/stable';
+
+import 'jest-styled-components';

chapter-4/starter-boilerplate/src/styles/theme/__tests__/utils.test.ts

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+import * as utils from '../utils';
+
+describe('theme utils', () => {
+  it('should get storage item', () => {
+    utils.saveTheme('system');
+    expect(utils.getThemeFromStorage()).toBe('system');
+  });
+  it('should check system theme', () => {
+    expect(utils.isSystemDark).toBeUndefined();
+  });
+});