feat(challenge24): create test harness

.gitignore

@@ -39,3 +39,5 @@ testem.log
 Thumbs.db
 
 .angular
+
+TODO.md

apps/create-harness/.eslintrc.json

@@ -0,0 +1,36 @@
+{
+  "extends": ["../../.eslintrc.json"],
+  "ignorePatterns": ["!**/*"],
+  "overrides": [
+    {
+      "files": ["*.ts"],
+      "rules": {
+        "@angular-eslint/directive-selector": [
+          "error",
+          {
+            "type": "attribute",
+            "prefix": "app",
+            "style": "camelCase"
+          }
+        ],
+        "@angular-eslint/component-selector": [
+          "error",
+          {
+            "type": "element",
+            "prefix": "app",
+            "style": "kebab-case"
+          }
+        ]
+      },
+      "extends": [
+        "plugin:@nx/angular",
+        "plugin:@angular-eslint/template/process-inline-templates"
+      ]
+    },
+    {
+      "files": ["*.html"],
+      "extends": ["plugin:@nx/angular-template"],
+      "rules": {}
+    }
+  ]
+}

apps/create-harness/jest.config.ts

@@ -0,0 +1,21 @@
+/* eslint-disable */
+export default {
+  displayName: 'create-harness',
+  preset: '../../jest.preset.js',
+  setupFilesAfterEnv: ['<rootDir>/src/test-setup.ts'],
+  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/create-harness/project.json

@@ -0,0 +1,95 @@
+{
+  "name": "create-harness",
+  "$schema": "../../node_modules/nx/schemas/project-schema.json",
+  "projectType": "application",
+  "prefix": "app",
+  "sourceRoot": "apps/create-harness/src",
+  "tags": [],
+  "targets": {
+    "build": {
+      "executor": "@angular-devkit/build-angular:browser",
+      "outputs": ["{options.outputPath}"],
+      "options": {
+        "outputPath": "dist/apps/create-harness",
+        "index": "apps/create-harness/src/index.html",
+        "main": "apps/create-harness/src/main.ts",
+        "polyfills": ["zone.js"],
+        "tsConfig": "apps/create-harness/tsconfig.app.json",
+        "assets": [
+          "apps/create-harness/src/favicon.ico",
+          "apps/create-harness/src/assets"
+        ],
+        "styles": ["apps/create-harness/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": "create-harness:build:production"
+        },
+        "development": {
+          "browserTarget": "create-harness:build:development"
+        }
+      },
+      "defaultConfiguration": "development"
+    },
+    "extract-i18n": {
+      "executor": "@angular-devkit/build-angular:extract-i18n",
+      "options": {
+        "browserTarget": "create-harness:build"
+      }
+    },
+    "test": {
+      "executor": "@nx/jest:jest",
+      "outputs": ["{workspaceRoot}/coverage/{projectRoot}"],
+      "options": {
+        "jestConfig": "apps/create-harness/jest.config.ts",
+        "passWithNoTests": true
+      },
+      "configurations": {
+        "ci": {
+          "ci": true,
+          "codeCoverage": true
+        }
+      }
+    },
+    "lint": {
+      "executor": "@nx/linter:eslint",
+      "outputs": ["{options.outputFile}"],
+      "options": {
+        "lintFilePatterns": [
+          "apps/create-harness/**/*.ts",
+          "apps/create-harness/**/*.html"
+        ]
+      }
+    }
+  }
+}

apps/create-harness/src/app/app.component.ts

@@ -0,0 +1,26 @@
+import { Component, signal } from '@angular/core';
+import { SliderComponent } from './slider.component';
+
+@Component({
+  standalone: true,
+  imports: [SliderComponent],
+  selector: 'app-root',
+  template: `
+    <h2>Slider 1: {{ slider1Value() }}</h2>
+    <app-slider
+      [step]="3"
+      [minValue]="10"
+      [maxValue]="30"
+      (valueChange)="slider1Value.set($event)" />
+    <h2>Slider 2: {{ slider2Value() }}</h2>
+    <app-slider
+      [step]="10"
+      [maxValue]="1000"
+      (valueChange)="slider2Value.set($event)" />
+  `,
+  styles: [''],
+})
+export class AppComponent {
+  slider1Value = signal(0);
+  slider2Value = signal(0);
+}

apps/create-harness/src/app/app.config.ts

@@ -0,0 +1,5 @@
+import { ApplicationConfig } from '@angular/core';
+
+export const appConfig: ApplicationConfig = {
+  providers: [],
+};

apps/create-harness/src/app/slider.component.spec.ts

@@ -0,0 +1,8 @@
+import { render } from '@testing-library/angular';
+import { SliderComponent } from './slider.component';
+
+describe('SliderComponent', () => {
+  test('should have 1 slider, 3 checkboxes, 4 inputs, 2 buttons', async () => {
+    await render(SliderComponent);
+  });
+});

apps/create-harness/src/app/slider.component.ts

@@ -0,0 +1,71 @@
+import { Component, Input, OnInit, Output, signal } from '@angular/core';
+import { toObservable } from '@angular/core/rxjs-interop';
+import { FormsModule } from '@angular/forms';
+import { MatCardModule } from '@angular/material/card';
+import { MatIconModule } from '@angular/material/icon';
+import { MatSliderModule } from '@angular/material/slider';
+
+@Component({
+  selector: 'app-slider',
+  template: `
+    <mat-card class="flex">
+      <mat-card-content>
+        <div class="flex gap-10 items-center">
+          <button mat-mini-fab (click)="back()">
+            <mat-icon>arrow_back_ios</mat-icon>
+          </button>
+          {{ minValue }}
+          <mat-slider
+            class="m-4"
+            [max]="maxValue"
+            [min]="minValue"
+            [step]="step">
+            <input matSliderThumb [value]="value()" />
+          </mat-slider>
+          {{ maxValue }}
+          <button mat-mini-fab (click)="forward()">
+            <mat-icon>arrow_forward_ios</mat-icon>
+          </button>
+        </div>
+      </mat-card-content>
+    </mat-card>
+  `,
+  styles: [
+    `
+      .mat-mdc-slider {
+        max-width: 300px;
+        width: 100%;
+      }
+
+      .mat-mdc-card + .mat-mdc-card {
+        margin-top: 8px;
+      }
+    `,
+  ],
+  standalone: true,
+  imports: [MatCardModule, FormsModule, MatSliderModule, MatIconModule],
+})
+export class SliderComponent implements OnInit {
+  @Input() step = 1;
+  @Input() minValue = 0;
+  @Input() maxValue = 100;
+
+  value = signal(0);
+  @Output() valueChange = toObservable(this.value);
+
+  ngOnInit(): void {
+    this.value.set(this.minValue);
+  }
+
+  back() {
+    if (this.value() - this.step >= this.minValue) {
+      this.value.update((v) => v - this.step);
+    }
+  }
+
+  forward() {
+    if (this.value() + this.step <= this.maxValue) {
+      this.value.update((v) => v + this.step);
+    }
+  }
+}

apps/create-harness/src/app/slider.harness.ts

@@ -0,0 +1,5 @@
+import { ComponentHarness } from '@angular/cdk/testing';
+
+class MySliderHarness extends ComponentHarness {
+  static hostSelector = 'app-slider';
+}

apps/create-harness/src/index.html

@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <title>create-harness</title>
+    <base href="/" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <link rel="icon" type="image/x-icon" href="favicon.ico" />
+    <link
+      href="https://fonts.googleapis.com/icon?family=Material+Icons"
+      rel="stylesheet" />
+  </head>
+  <body>
+    <app-root></app-root>
+  </body>
+</html>

apps/create-harness/src/main.ts

@@ -0,0 +1,7 @@
+import { bootstrapApplication } from '@angular/platform-browser';
+import { appConfig } from './app/app.config';
+import { AppComponent } from './app/app.component';
+
+bootstrapApplication(AppComponent, appConfig).catch((err) =>
+  console.error(err)
+);

apps/create-harness/src/styles.scss

@@ -0,0 +1,29 @@
+/* You can add global styles to this file, and also import other style files */
+@use '@angular/material' as mat;
+
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+/* You can add global styles to this file, and also import other style files */
+
+@include mat.core();
+
+$theme-primary: mat.define-palette(mat.$indigo-palette);
+$theme-accent: mat.define-palette(mat.$pink-palette, A200, A100, A400);
+
+$theme-warn: mat.define-palette(mat.$red-palette);
+
+$theme: mat.define-light-theme(
+  (
+    color: (
+      primary: $theme-primary,
+      accent: $theme-accent,
+      warn: $theme-warn,
+    ),
+    typography: mat.define-typography-config(),
+  )
+);
+
+@include mat.dialog-theme($theme);
+@include mat.all-component-themes($theme);

apps/create-harness/src/test-setup.ts

@@ -0,0 +1,2 @@
+import '@testing-library/jest-dom';
+import 'jest-preset-angular/setup-jest';

apps/create-harness/tailwind.config.js

@@ -0,0 +1,14 @@
+const { createGlobPatternsForDependencies } = require('@nx/angular/tailwind');
+const { join } = require('path');
+
+/** @type {import('tailwindcss').Config} */
+module.exports = {
+  content: [
+    join(__dirname, 'src/**/!(*.stories|*.spec).{ts,html}'),
+    ...createGlobPatternsForDependencies(__dirname),
+  ],
+  theme: {
+    extend: {},
+  },
+  plugins: [],
+};

apps/create-harness/tsconfig.app.json

@@ -0,0 +1,10 @@
+{
+  "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"]
+}

apps/create-harness/tsconfig.editor.json

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

apps/create-harness/tsconfig.json

@@ -0,0 +1,32 @@
+{
+  "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.editor.json"
+    },
+    {
+      "path": "./tsconfig.spec.json"
+    }
+  ],
+  "extends": "../../tsconfig.base.json",
+  "angularCompilerOptions": {
+    "enableI18nLegacyMessageIdFormat": false,
+    "strictInjectionParameters": true,
+    "strictInputAccessModifiers": true,
+    "strictTemplates": true
+  }
+}

apps/create-harness/tsconfig.spec.json

@@ -0,0 +1,16 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "outDir": "../../dist/out-tsc",
+    "module": "commonjs",
+    "target": "es2016",
+    "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"
+  ]
+}