angular-cli/packages/schematics/angular/service-worker/index_spec.ts

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

import { SchematicTestRunner, UnitTestTree } from '@angular-devkit/schematics/testing';
import { Schema as ApplicationOptions } from '../application/schema';
import { Schema as WorkspaceOptions } from '../workspace/schema';
import { Schema as ServiceWorkerOptions } from './schema';

describe('Service Worker Schematic', () => {
  const schematicRunner = new SchematicTestRunner(
    '@schematics/angular',
    require.resolve('../collection.json'),
  );
  const defaultOptions: ServiceWorkerOptions = {
    project: 'bar',
    target: 'build',
    configuration: '',
  };

  let appTree: UnitTestTree;

  const workspaceOptions: WorkspaceOptions = {
    name: 'workspace',
    newProjectRoot: 'projects',
    version: '6.0.0',
  };

  const appOptions: ApplicationOptions = {
    name: 'bar',
    inlineStyle: false,
    inlineTemplate: false,
    routing: false,
    skipTests: false,
    skipPackageJson: false,
  };

  beforeEach(async () => {
    appTree = await schematicRunner.runSchematicAsync('workspace', workspaceOptions).toPromise();
    appTree = await schematicRunner
      .runSchematicAsync('application', appOptions, appTree)
      .toPromise();
  });

  it('should add `serviceWorker` option to build target', async () => {
    const tree = await schematicRunner
      .runSchematicAsync('service-worker', defaultOptions, appTree)
      .toPromise();
    const configText = tree.readContent('/angular.json');
    const buildConfig = JSON.parse(configText).projects.bar.architect.build;

    expect(buildConfig.options.serviceWorker).toBeTrue();
  });

  it('should add the necessary dependency', async () => {
    const tree = await schematicRunner
      .runSchematicAsync('service-worker', defaultOptions, appTree)
      .toPromise();
    const pkgText = tree.readContent('/package.json');
    const pkg = JSON.parse(pkgText);
    const version = pkg.dependencies['@angular/core'];
    expect(pkg.dependencies['@angular/service-worker']).toEqual(version);
  });

  it('should import ServiceWorkerModule', async () => {
    const tree = await schematicRunner
      .runSchematicAsync('service-worker', defaultOptions, appTree)
      .toPromise();
    const pkgText = tree.readContent('/projects/bar/src/app/app.module.ts');
    expect(pkgText).toMatch(/import \{ ServiceWorkerModule \} from '@angular\/service-worker'/);
  });

  it('should import environment', async () => {
    const tree = await schematicRunner
      .runSchematicAsync('service-worker', defaultOptions, appTree)
      .toPromise();
    const pkgText = tree.readContent('/projects/bar/src/app/app.module.ts');
    expect(pkgText).toMatch(/import \{ environment \} from '\.\.\/environments\/environment'/);
  });

  it('should add the SW import to the NgModule imports', async () => {
    const tree = await schematicRunner
      .runSchematicAsync('service-worker', defaultOptions, appTree)
      .toPromise();
    const pkgText = tree.readContent('/projects/bar/src/app/app.module.ts');
    expect(pkgText).toMatch(
      new RegExp(
        "(\\s+)ServiceWorkerModule\\.register\\('ngsw-worker\\.js', \\{\\n" +
          '\\1  enabled: environment\\.production,\\n' +
          '\\1  // Register the ServiceWorker as soon as the app is stable\\n' +
          '\\1  // or after 30 seconds \\(whichever comes first\\)\\.\\n' +
          "\\1  registrationStrategy: 'registerWhenStable:30000'\\n" +
          '\\1}\\)',
      ),
    );
  });

  it('should add the SW import to the NgModule imports with aliased environment', async () => {
    const moduleContent = `
      import { BrowserModule } from '@angular/platform-browser';
      import { NgModule } from '@angular/core';

      import { AppComponent } from './app.component';
      import { environment as env } from '../environments/environment';

      @NgModule({
        declarations: [
          AppComponent
        ],
        imports: [
          BrowserModule
        ],
        bootstrap: [AppComponent]
      })
      export class AppModule {}
    `;

    appTree.overwrite('/projects/bar/src/app/app.module.ts', moduleContent);

    const tree = await schematicRunner
      .runSchematicAsync('service-worker', defaultOptions, appTree)
      .toPromise();
    const pkgText = tree.readContent('/projects/bar/src/app/app.module.ts');
    expect(pkgText).toMatch(
      new RegExp(
        "(\\s+)ServiceWorkerModule\\.register\\('ngsw-worker\\.js', \\{\\n" +
          '\\1  enabled: env\\.production,\\n' +
          '\\1  // Register the ServiceWorker as soon as the app is stable\\n' +
          '\\1  // or after 30 seconds \\(whichever comes first\\)\\.\\n' +
          "\\1  registrationStrategy: 'registerWhenStable:30000'\\n" +
          '\\1}\\)',
      ),
    );
  });

  it('should add the SW import to the NgModule imports with existing environment', async () => {
    const moduleContent = `
      import { BrowserModule } from '@angular/platform-browser';
      import { NgModule } from '@angular/core';

      import { AppComponent } from './app.component';
      import { environment } from '../environments/environment';

      @NgModule({
        declarations: [
          AppComponent
        ],
        imports: [
          BrowserModule
        ],
        bootstrap: [AppComponent]
      })
      export class AppModule {}
    `;

    appTree.overwrite('/projects/bar/src/app/app.module.ts', moduleContent);

    const tree = await schematicRunner
      .runSchematicAsync('service-worker', defaultOptions, appTree)
      .toPromise();
    const pkgText = tree.readContent('/projects/bar/src/app/app.module.ts');
    expect(pkgText).toMatch(
      new RegExp(
        "(\\s+)ServiceWorkerModule\\.register\\('ngsw-worker\\.js', \\{\\n" +
          '\\1  enabled: environment\\.production,\\n' +
          '\\1  // Register the ServiceWorker as soon as the app is stable\\n' +
          '\\1  // or after 30 seconds \\(whichever comes first\\)\\.\\n' +
          "\\1  registrationStrategy: 'registerWhenStable:30000'\\n" +
          '\\1}\\)',
      ),
    );
  });

  it('should put the ngsw-config.json file in the project root', async () => {
    const tree = await schematicRunner
      .runSchematicAsync('service-worker', defaultOptions, appTree)
      .toPromise();
    const path = '/projects/bar/ngsw-config.json';
    expect(tree.exists(path)).toEqual(true);

    const { projects } = JSON.parse(tree.readContent('/angular.json'));
    expect(projects.bar.architect.build.options.ngswConfigPath).toBe(
      'projects/bar/ngsw-config.json',
    );
  });

  it('should add $schema in ngsw-config.json with correct relative path', async () => {
    const pathToNgswConfigSchema = 'node_modules/@angular/service-worker/config/schema.json';

    const name = 'foo';
    const rootAppOptions: ApplicationOptions = {
      ...appOptions,
      name,
      projectRoot: '',
    };
    const rootSWOptions: ServiceWorkerOptions = {
      ...defaultOptions,
      project: name,
    };
    const rootAppTree = await schematicRunner
      .runSchematicAsync('application', rootAppOptions, appTree)
      .toPromise();
    const treeInRoot = await schematicRunner
      .runSchematicAsync('service-worker', rootSWOptions, rootAppTree)
      .toPromise();
    const pkgTextInRoot = treeInRoot.readContent('/ngsw-config.json');
    const configInRoot = JSON.parse(pkgTextInRoot);
    expect(configInRoot.$schema).toBe(`./${pathToNgswConfigSchema}`);

    const treeNotInRoot = await schematicRunner
      .runSchematicAsync('service-worker', defaultOptions, appTree)
      .toPromise();
    const pkgTextNotInRoot = treeNotInRoot.readContent('/projects/bar/ngsw-config.json');
    const configNotInRoot = JSON.parse(pkgTextNotInRoot);
    expect(configNotInRoot.$schema).toBe(`../../${pathToNgswConfigSchema}`);
  });

  it('should add root assets RegExp', async () => {
    const tree = await schematicRunner
      .runSchematicAsync('service-worker', defaultOptions, appTree)
      .toPromise();
    const pkgText = tree.readContent('/projects/bar/ngsw-config.json');
    const config = JSON.parse(pkgText);
    expect(config.assetGroups[1].resources.files).toContain(
      '/*.(eot|svg|cur|jpg|png|webp|gif|otf|ttf|woff|woff2|ani)',
    );
  });

  it('should add resourcesOutputPath to root assets when specified', async () => {
    const config = JSON.parse(appTree.readContent('/angular.json'));
    config.projects.bar.architect.build.options.resourcesOutputPath = 'outDir';
    appTree.overwrite('/angular.json', JSON.stringify(config));
    const tree = await schematicRunner
      .runSchematicAsync('service-worker', defaultOptions, appTree)
      .toPromise();
    const pkgText = tree.readContent('/projects/bar/ngsw-config.json');
    const ngswConfig = JSON.parse(pkgText);
    expect(ngswConfig.assetGroups[1].resources.files).toContain(
      '/outDir/*.(eot|svg|cur|jpg|png|webp|gif|otf|ttf|woff|woff2|ani)',
    );
  });

  it('should generate ngsw-config.json in root when the application is at root level', async () => {
    const name = 'foo';
    const rootAppOptions: ApplicationOptions = {
      ...appOptions,
      name,
      projectRoot: '',
    };
    const rootSWOptions: ServiceWorkerOptions = {
      ...defaultOptions,
      project: name,
    };

    let tree = await schematicRunner
      .runSchematicAsync('application', rootAppOptions, appTree)
      .toPromise();
    tree = await schematicRunner
      .runSchematicAsync('service-worker', rootSWOptions, tree)
      .toPromise();
    expect(tree.exists('/ngsw-config.json')).toBe(true);

    const { projects } = JSON.parse(tree.readContent('/angular.json'));
    expect(projects.foo.architect.build.options.ngswConfigPath).toBe('ngsw-config.json');
  });
});