test: add tests for build-webpack:webpack-dev-server new builder

packages/angular_devkit/build_webpack/src/webpack-dev-server/index2_spec_large.ts

@@ -0,0 +1,58 @@
+/**
+ * @license
+ * Copyright Google Inc. 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 { Architect } from '@angular-devkit/architect/src/index2';
+import { TestingArchitectHost } from '@angular-devkit/architect/testing/index2';
+import { experimental, join, normalize, schema } from '@angular-devkit/core';
+import { NodeJsSyncHost } from '@angular-devkit/core/node';
+import * as fs from 'fs';
+import fetch from 'node-fetch';  // tslint:disable-line:no-implicit-dependencies
+import * as path from 'path';
+import { WorkspaceNodeModulesArchitectHost } from '../../../architect/node';
+import { DevServerBuildResult } from './index2';
+
+const devkitRoot = normalize((global as any)._DevKitRoot); // tslint:disable-line:no-any
+
+
+describe('Dev Server Builder', () => {
+  let testArchitectHost: TestingArchitectHost;
+  let architect: Architect;
+  let vfHost: NodeJsSyncHost;
+
+  const webpackTargetSpec = { project: 'app', target: 'serve' };
+
+  async function createArchitect(workspaceRoot: string) {
+    vfHost = new NodeJsSyncHost();
+    const configContent = fs.readFileSync(path.join(workspaceRoot, 'angular.json'), 'utf-8');
+    const workspaceJson = JSON.parse(configContent);
+
+    const registry = new schema.CoreSchemaRegistry();
+    registry.addPostTransform(schema.transforms.addUndefinedDefaults);
+
+    const workspace = new experimental.workspace.Workspace(normalize(workspaceRoot), vfHost);
+    await workspace.loadWorkspaceFromJson(workspaceJson).toPromise();
+
+    testArchitectHost = new TestingArchitectHost(workspaceRoot, workspaceRoot,
+      new WorkspaceNodeModulesArchitectHost(workspace, workspaceRoot));
+    architect = new Architect(testArchitectHost, registry);
+  }
+
+  beforeEach(async () => {
+    await createArchitect(join(devkitRoot, 'tests/angular_devkit/build_webpack/basic-app/'));
+  });
+
+  it('works', async () => {
+    const run = await architect.scheduleTarget(webpackTargetSpec);
+    const output = await run.result as DevServerBuildResult;
+    expect(output.success).toBe(true);
+
+    const response = await fetch(`http://${output.address}:${output.port}/bundle.js`);
+    expect(await response.text()).toContain(`console.log('hello world')`);
+
+    await run.stop();
+  }, 30000);
+});