feat(test): add challenge 18 and 19 avout testing

apps/testing-nested/.eslintrc.json

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+{
+  "extends": ["../../.eslintrc.json"],
+  "ignorePatterns": ["!**/*"],
+  "overrides": [
+    {
+      "files": ["*.ts"],
+      "rules": {},
+      "extends": [
+        "plugin:@nrwl/nx/angular",
+        "plugin:@angular-eslint/template/process-inline-templates"
+      ]
+    },
+    {
+      "files": ["*.html"],
+      "extends": ["plugin:@nrwl/nx/angular-template"],
+      "rules": {}
+    }
+  ]
+}

apps/testing-nested/README.md

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+<h1>Nested component testing</h1>
+
+> Author: Thomas Laforge
+
+### Statement:
+
+We have a small application that send a title to a fake backend that you type inside a input.
+If the title is correctly typed, you can send the request otherwise you get a nice error and the request is not sent.
+You can play with it by running : `npx nx serve testing-nested`.
+
+The goal is to test this behavior with Testing library and Cypress
+
+The file named `child.component.spec.ts` will let test your application using Testing Library. To run the test suits, you need to run `npx nx test testing-nested`. You can also install [Jest Runner](https://marketplace.visualstudio.com/items?itemName=firsttris.vscode-jest-runner) to execute your test by clicking on the `Run` button above each `describe` or `it` blocks.
+
+For testing cypress, you will execute your test inside the `child.component.cy.ts` and run `npx nx component-test testing-nested` to execute your test suits. You can add the `--watch` flag to execute your test in watch mode.
+
+I created some `it` blocks but feel free to add more test if you like to.
+
+### Submitting your work
+
+1. Fork the project
+2. clone it
+3. npm install
+4. `npx nx serve testing-nested` to play with the application
+5. `npx nx test testing-nested` to test your application with Testing Library
+6. `npx nx component-test testing-nested --watch` to test your application with Cypress
+7. _...work on it_
+8. Commit your work
+9. Submit a PR with a title beginning with **Answer:18** that I will review and other dev can review.
+
+<a href="https://github.com/tomalaforge/angular-challenges/pulls?q=label%3A18+label%3Aanswer"><img src="https://img.shields.io/badge/-Solutions-green" alt="nested testing"/></a>
+
+<!-- <a href='https://github.com/tomalaforge/angular-challenges/pulls?q=label%3A18+label%3A"answer+author"'><img src="https://img.shields.io/badge/-Author solution-important" alt="nested testing solution author"/></a>
+<a href="{Blog post url}" target="_blank" rel="noopener noreferrer"><img src="https://img.shields.io/badge/-Blog post explanation-blue" alt="nested testing blog article"/></a> -->
+
+_You can ask any question on_ <a href="https://twitter.com/laforge_toma" target="_blank" rel="noopener noreferrer"><img src="./../../logo/twitter.svg" height=20px alt="twitter"/></a>

apps/testing-nested/cypress.config.ts

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+import { defineConfig } from 'cypress';
+import { nxComponentTestingPreset } from '@nrwl/angular/plugins/component-testing';
+
+export default defineConfig({
+  component: nxComponentTestingPreset(__filename),
+});

apps/testing-nested/cypress/fixtures/example.json

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

apps/testing-nested/cypress/support/commands.ts

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+/// <reference types="cypress" />
+import { mount } from 'cypress/angular';
+
+// ***********************************************
+// This example commands.ts 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
+// ***********************************************
+
+declare global {
+  // eslint-disable-next-line @typescript-eslint/no-namespace
+  namespace Cypress {
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
+    interface Chainable<Subject> {
+      login(email: string, password: string): void;
+      mount: typeof mount;
+    }
+  }
+}
+
+Cypress.Commands.add('mount', mount);
+
+//
+// -- This is a parent command --
+Cypress.Commands.add('login', (email, password) => {
+  console.log('Custom command example: 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) => { ... })

apps/testing-nested/cypress/support/component-index.html

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+<!DOCTYPE html>
+<html>
+<head>
+  <meta charset="utf-8">
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <meta name="viewport" content="width=device-width,initial-scale=1.0">
+  <title>testing-nested Components App</title>
+
+</head>
+<body>
+  <div data-cy-root></div>
+</body>
+</html>

apps/testing-nested/cypress/support/component.ts

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+// ***********************************************************
+// This example support/component.ts 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.ts using ES2015 syntax:
+import './commands';

apps/testing-nested/cypress/tsconfig.cy.json

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+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "outDir": "../../../dist/out-tsc",
+    "module": "commonjs",
+    "types": ["cypress", "node"]
+  },
+  "include": [
+    "support/**/*.ts",
+    "../cypress.config.ts",
+    "../**/*.cy.ts",
+    "../**/*.cy.tsx",
+    "../**/*.cy.js",
+    "../**/*.cy.jsx",
+    "../**/*.d.ts"
+  ]
+}

apps/testing-nested/jest.config.ts

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+/* eslint-disable */
+export default {
+  displayName: 'testing-nested',
+  preset: '../../jest.preset.js',
+  setupFilesAfterEnv: ['<rootDir>/src/test-setup.ts'],
+  coverageDirectory: '../../coverage/apps/testing-nested',
+  transform: {
+    '^.+\\.(ts|mjs|js|html)$': [
+      'jest-preset-angular',
+      {
+        tsconfig: '<rootDir>/tsconfig.spec.json',
+        stringifyContentPathRegex: '\\.(html|svg)$',
+      },
+    ],
+  },
+  transformIgnorePatterns: ['node_modules/(?!.*\\.mjs$)'],
+  snapshotSerializers: [
+    'jest-preset-angular/build/serializers/no-ng-attributes',
+    'jest-preset-angular/build/serializers/ng-snapshot',
+    'jest-preset-angular/build/serializers/html-comment',
+  ],
+};

apps/testing-nested/project.json

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+{
+  "name": "testing-nested",
+  "$schema": "../node_modules/nx/schemas/project-schema.json",
+  "projectType": "application",
+  "sourceRoot": "apps/testing-nested/src",
+  "prefix": "app",
+  "targets": {
+    "build": {
+      "executor": "@angular-devkit/build-angular:browser",
+      "outputs": ["{options.outputPath}"],
+      "options": {
+        "outputPath": "dist/apps/testing-nested",
+        "index": "apps/testing-nested/src/index.html",
+        "main": "apps/testing-nested/src/main.ts",
+        "polyfills": ["zone.js"],
+        "tsConfig": "apps/testing-nested/tsconfig.app.json",
+        "inlineStyleLanguage": "scss",
+        "assets": [
+          "apps/testing-nested/src/favicon.ico",
+          "apps/testing-nested/src/assets"
+        ],
+        "styles": ["apps/testing-nested/src/styles.scss"],
+        "scripts": []
+      },
+      "configurations": {
+        "production": {
+          "budgets": [
+            {
+              "type": "initial",
+              "maximumWarning": "500kb",
+              "maximumError": "1mb"
+            },
+            {
+              "type": "anyComponentStyle",
+              "maximumWarning": "2kb",
+              "maximumError": "4kb"
+            }
+          ],
+          "outputHashing": "all"
+        },
+        "development": {
+          "buildOptimizer": false,
+          "optimization": false,
+          "vendorChunk": true,
+          "extractLicenses": false,
+          "sourceMap": true,
+          "namedChunks": true
+        }
+      },
+      "defaultConfiguration": "production"
+    },
+    "serve": {
+      "executor": "@angular-devkit/build-angular:dev-server",
+      "configurations": {
+        "production": {
+          "browserTarget": "testing-nested:build:production"
+        },
+        "development": {
+          "browserTarget": "testing-nested:build:development"
+        }
+      },
+      "defaultConfiguration": "development"
+    },
+    "extract-i18n": {
+      "executor": "@angular-devkit/build-angular:extract-i18n",
+      "options": {
+        "browserTarget": "testing-nested:build"
+      }
+    },
+    "lint": {
+      "executor": "@nrwl/linter:eslint",
+      "outputs": ["{options.outputFile}"],
+      "options": {
+        "lintFilePatterns": [
+          "apps/testing-nested/**/*.ts",
+          "apps/testing-nested/**/*.html"
+        ]
+      }
+    },
+    "test": {
+      "executor": "@nrwl/jest:jest",
+      "outputs": ["{workspaceRoot}/coverage/{projectRoot}"],
+      "options": {
+        "jestConfig": "apps/testing-nested/jest.config.ts",
+        "passWithNoTests": true
+      },
+      "configurations": {
+        "ci": {
+          "ci": true,
+          "codeCoverage": true
+        }
+      }
+    },
+    "component-test": {
+      "executor": "@nrwl/cypress:cypress",
+      "options": {
+        "cypressConfig": "apps/testing-nested/cypress.config.ts",
+        "testingType": "component",
+        "skipServe": true,
+        "devServerTarget": "testing-nested:build"
+      }
+    }
+  },
+  "tags": []
+}

apps/testing-nested/src/app/app.component.ts

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+import { Component } from '@angular/core';
+import { ChildComponent } from './child.component';
+
+@Component({
+  standalone: true,
+  imports: [ChildComponent],
+  selector: 'app-root',
+  template: ` <app-child></app-child> `,
+})
+export class AppComponent {}

apps/testing-nested/src/app/child.component.cy.ts

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+import { ChildComponent } from './child.component';
+
+describe(ChildComponent.name, () => {
+  const setup = () => {
+    cy.mount(ChildComponent);
+  };
+
+  test('add Good title and send request title with no error', () => {
+    setup();
+  });
+
+  test('fail validating title because no title were typed', () => {
+    setup();
+  });
+});

apps/testing-nested/src/app/child.component.spec.ts

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+import { render } from '@testing-library/angular';
+import { ChildComponent } from './child.component';
+
+describe('ChildComponent', () => {
+  test('add Good title and send request title with no error', async () => {
+    await render(ChildComponent);
+  });
+
+  test('fail validating title because no title were typed', async () => {
+    await render(ChildComponent);
+  });
+});

apps/testing-nested/src/app/child.component.ts

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+import { NgIf } from '@angular/common';
+import {
+  ChangeDetectionStrategy,
+  Component,
+  EventEmitter,
+  Input,
+  Output,
+  inject,
+} from '@angular/core';
+import { FormControl, ReactiveFormsModule } from '@angular/forms';
+import { HttpService } from './http.service';
+
+@Component({
+  selector: 'app-input',
+  standalone: true,
+  imports: [ReactiveFormsModule],
+  template: ` <input type="text" [formControl]="title" /> `,
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class InputComponent {
+  title = new FormControl('', { nonNullable: true });
+}
+
+@Component({
+  selector: 'result',
+  standalone: true,
+  template: ` <p>Title is {{ title }}</p> `,
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class ResultComponent {
+  @Input() title = '';
+}
+
+@Component({
+  selector: 'app-button',
+  standalone: true,
+  template: `<button (click)="validate.emit()">Validate</button>`,
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class ButtonComponent {
+  @Output() validate = new EventEmitter();
+}
+
+@Component({
+  selector: 'app-error',
+  standalone: true,
+  template: `<p>Title is required !!!</p>`,
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class ErrorComponent {
+  @Output() validate = new EventEmitter();
+}
+
+@Component({
+  selector: 'app-child',
+  standalone: true,
+  imports: [
+    ResultComponent,
+    ButtonComponent,
+    InputComponent,
+    ErrorComponent,
+    NgIf,
+  ],
+  template: `
+    <app-input #input></app-input>
+    <result [title]="input.title.value"></result>
+    <app-button (validate)="submit(input.title.value)"></app-button>
+    <app-error *ngIf="showError"></app-error>
+  `,
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class ChildComponent {
+  http = inject(HttpService);
+
+  showError = false;
+
+  submit(title: string) {
+    this.showError = false;
+    if (title === '') {
+      this.showError = true;
+      return;
+    }
+
+    this.http.sendTitle(title);
+  }
+}

apps/testing-nested/src/app/http.service.ts

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+import { Injectable } from '@angular/core';
+
+@Injectable({ providedIn: 'root' })
+export class HttpService {
+  sendTitle(title: string) {
+    console.log(`${title} has been sent !!!`);
+  }
+}

apps/testing-nested/src/index.html

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+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <title>TestingNested</title>
+    <base href="/" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <link rel="icon" type="image/x-icon" href="favicon.ico" />
+  </head>
+  <body>
+    <app-root></app-root>
+  </body>
+</html>

apps/testing-nested/src/main.ts

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+import { bootstrapApplication } from '@angular/platform-browser';
+import { AppComponent } from './app/app.component';
+
+bootstrapApplication(AppComponent).catch((err) => console.error(err));

apps/testing-nested/src/styles.scss

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+/* You can add global styles to this file, and also import other style files */

apps/testing-nested/src/test-setup.ts

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+import '@testing-library/jest-dom';
+import 'jest-preset-angular/setup-jest';

apps/testing-nested/tsconfig.app.json

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+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "outDir": "../../dist/out-tsc",
+    "types": []
+  },
+  "files": ["src/main.ts"],
+  "include": ["src/**/*.d.ts"],
+  "exclude": [
+    "jest.config.ts",
+    "src/**/*.test.ts",
+    "src/**/*.spec.ts",
+    "cypress/**/*",
+    "cypress.config.ts",
+    "**/*.cy.ts",
+    "**/*.cy.js",
+    "**/*.cy.tsx",
+    "**/*.cy.jsx"
+  ]
+}

apps/testing-nested/tsconfig.editor.json

@@ -0,0 +1,7 @@
+{
+  "extends": "./tsconfig.json",
+  "include": ["src/**/*.ts"],
+  "compilerOptions": {
+    "types": ["jest", "node"]
+  }
+}

apps/testing-nested/tsconfig.json

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+{
+  "compilerOptions": {
+    "target": "es2022",
+    "useDefineForClassFields": false,
+    "forceConsistentCasingInFileNames": true,
+    "strict": true,
+    "noImplicitOverride": true,
+    "noPropertyAccessFromIndexSignature": true,
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true
+  },
+  "files": [],
+  "include": [],
+  "references": [
+    {
+      "path": "./tsconfig.app.json"
+    },
+    {
+      "path": "./tsconfig.spec.json"
+    },
+    {
+      "path": "./tsconfig.editor.json"
+    },
+    {
+      "path": "./cypress/tsconfig.cy.json"
+    }
+  ],
+  "extends": "../../tsconfig.base.json",
+  "angularCompilerOptions": {
+    "enableI18nLegacyMessageIdFormat": false,
+    "strictInjectionParameters": true,
+    "strictInputAccessModifiers": true,
+    "strictTemplates": true
+  }
+}

apps/testing-nested/tsconfig.spec.json

@@ -0,0 +1,15 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "outDir": "../../dist/out-tsc",
+    "module": "commonjs",
+    "types": ["jest", "node", "@testing-library/jest-dom"]
+  },
+  "files": ["src/test-setup.ts"],
+  "include": [
+    "jest.config.ts",
+    "src/**/*.test.ts",
+    "src/**/*.spec.ts",
+    "src/**/*.d.ts"
+  ]
+}