test: update E2E polyfills test for JIT mode

Author: clydin

tests/legacy-cli/e2e/tests/build/polyfills.ts

@@ -1,18 +1,32 @@
-import { expectFileToMatch } from '../../utils/fs';
-import { ng } from '../../utils/process';
 import { oneLineTrim } from 'common-tags';
+import {
+  expectFileSizeToBeUnder,
+  expectFileToExist,
+  expectFileToMatch,
+  getFileSize,
+} from '../../utils/fs';
+import { ng } from '../../utils/process';
+import { expectToFail } from '../../utils/utils';
 
-export default function () {
-  // TODO(architect): Delete this test. It is now in devkit/build-angular.
+export default async function () {
+    await ng('build');
+    // files were created successfully
+    await expectFileToMatch('dist/test-project/polyfills.js', 'core-js/es7/reflect');
+    await expectFileToMatch('dist/test-project/polyfills.js', 'zone.js');
+    expectFileToMatch('dist/test-project/index.html', oneLineTrim`
+      <script type="text/javascript" src="runtime.js"></script>
+      <script type="text/javascript" src="polyfills.js"></script>
+    `);
+    const jitPolyfillSize = await getFileSize('dist/test-project/polyfills.js');
 
-  return Promise.resolve()
-    .then(() => ng('build'))
+    await ng('build', '--aot');
     // files were created successfully
-    .then(() => expectFileToMatch('dist/test-project/polyfills.js', 'core-js'))
-    .then(() => expectFileToMatch('dist/test-project/polyfills.js', 'zone.js'))
-    // index.html lists the right bundles
-    .then(() => expectFileToMatch('dist/test-project/index.html', oneLineTrim`
+    await expectFileToExist('dist/test-project/polyfills.js');
+    await expectFileSizeToBeUnder('dist/test-project/polyfills.js', jitPolyfillSize);
+    await expectToFail(() => expectFileToMatch('dist/test-project/polyfills.js', 'core-js/es7/reflect'));
+    await expectFileToMatch('dist/test-project/polyfills.js', 'zone.js');
+    expectFileToMatch('dist/test-project/index.html', oneLineTrim`
       <script type="text/javascript" src="runtime.js"></script>
       <script type="text/javascript" src="polyfills.js"></script>
-    `));
+    `);
 }

tests/legacy-cli/e2e/utils/fs.ts

@@ -192,11 +192,16 @@ export function expectFileToMatch(fileName: string, regEx: RegExp | string) {
     });
 }
 
-export function expectFileSizeToBeUnder(fileName: string, sizeInBytes: number) {
-  return readFile(fileName)
-    .then(content => {
-      if (content.length > sizeInBytes) {
-        throw new Error(`File "${fileName}" exceeded file size of "${sizeInBytes}".`);
-      }
-    });
+export async function getFileSize(fileName: string) {
+  const stats = await fs.stat(fileName);
+
+  return stats.size;
+}
+
+export async function expectFileSizeToBeUnder(fileName: string, sizeInBytes: number) {
+  const fileSize = await getFileSize(fileName);
+
+  if (fileSize > sizeInBytes) {
+    throw new Error(`File "${fileName}" exceeded file size of "${sizeInBytes}".`);
+  }
 }