test(@angular-devkit/build-angular): add AOT partial compilation E2E test

This adds a new E2E test that creates a library, converts it to use partial AOT compilation (linker mode), and integrates the library into an application.  This provides a full workflow test of the new method to produce a publishable Angular library.

Author: clydin

tests/legacy-cli/e2e/tests/generate/library/library-consumption-linker.ts

@@ -0,0 +1,100 @@
+import { writeFile } from '../../../utils/fs';
+import { ng } from '../../../utils/process';
+import { updateJsonFile } from '../../../utils/project';
+
+export default async function () {
+  await ng('generate', 'library', 'my-lib');
+
+  // Enable partial compilation mode (linker) for the library
+  await updateJsonFile('projects/my-lib/tsconfig.lib.json', config => {
+    const { angularCompilerOptions = {} } = config;
+    angularCompilerOptions.compilationMode = 'partial';
+    config.angularCompilerOptions = angularCompilerOptions;
+  });
+  // Enable ivy for production as well
+  await updateJsonFile('projects/my-lib/tsconfig.lib.prod.json', config => {
+    const { angularCompilerOptions = {} } = config;
+    angularCompilerOptions.enableIvy = true;
+    config.angularCompilerOptions = angularCompilerOptions;
+  });
+
+  await writeFile('./src/app/app.module.ts', `
+      import { BrowserModule } from '@angular/platform-browser';
+      import { NgModule } from '@angular/core';
+      import { MyLibModule } from 'my-lib';
+
+      import { AppComponent } from './app.component';
+
+      @NgModule({
+        declarations: [
+          AppComponent
+        ],
+        imports: [
+          BrowserModule,
+          MyLibModule,
+        ],
+        providers: [],
+        bootstrap: [AppComponent]
+      })
+      export class AppModule { }
+    `);
+
+  await writeFile('./src/app/app.component.ts', `
+      import { Component } from '@angular/core';
+      import { MyLibService } from 'my-lib';
+
+      @Component({
+        selector: 'app-root',
+        template: '<lib-my-lib></lib-my-lib>'
+      })
+      export class AppComponent {
+        title = 'app';
+
+        constructor(myLibService: MyLibService) {
+          console.log(myLibService);
+        }
+      }
+    `);
+
+  await writeFile('e2e/src/app.e2e-spec.ts', `
+    import { browser, logging, element, by } from 'protractor';
+    import { AppPage } from './app.po';
+
+    describe('workspace-project App', () => {
+      let page: AppPage;
+
+      beforeEach(() => {
+        page = new AppPage();
+      });
+
+      it('should display text from library component', async () => {
+        await page.navigateTo();
+        expect(await element(by.css('lib-my-lib p')).getText()).toEqual('my-lib works!');
+      });
+
+      afterEach(async () => {
+        // Assert that there are no errors emitted from the browser
+        const logs = await browser.manage().logs().get(logging.Type.BROWSER);
+        expect(logs).not.toContain(jasmine.objectContaining({
+          level: logging.Level.SEVERE,
+        }));
+      });
+    });
+  `);
+
+  await runLibraryTests();
+  await runLibraryTests(true);
+}
+
+async function runLibraryTests(prodMode = false): Promise<void> {
+  const args = ['build', 'my-lib'];
+  if (prodMode) {
+    args.push('--prod');
+  }
+
+  await ng(...args);
+
+  // Check that the tests succeeds both with named project, unnamed (should test app), and prod.
+  await ng('e2e');
+  await ng('e2e', 'test-project', '--devServerTarget=test-project:serve:production');
+}