Assert an AotPlugin instance is present in webpack compilation.

Revisit e2e tests.

Author: cladera

packages/@ngtools/webpack/src/extract_i18n_plugin.ts

@@ -138,6 +138,10 @@ export class ExtractI18nPlugin implements Tapable {
       return cb(new Error('An @ngtools/webpack xi18n plugin already exist for ' +
         'this compilation.'));
     }
+    if (!this._compilation._ngToolsWebpackPluginInstance) {
+      return cb(new Error('An @ngtools/webpack aot plugin does not exists ' +
+        'for this compilation'));
+    }
 
     this._compilation._ngToolsWebpackXi18nPluginInstance = this;
 

tests/e2e/tests/i18n/extract-default.ts

@@ -1,17 +1,15 @@
 import {join} from 'path';
 import {ng} from '../../utils/process';
 import {
-  expectFileToExist, deleteFile, writeFile,
+  expectFileToExist, writeFile,
   expectFileToMatch
 } from '../../utils/fs';
 
 
 export default function() {
-  const testComponentDir = join('src/app', 'i18n-test');
   return ng('generate', 'component', 'i18n-test')
-    .then(() => deleteFile(join(testComponentDir, 'i18n-test.component.html')))
     .then(() => writeFile(
-      join(testComponentDir, 'i18n-test.component.html'),
+      join('src/app/i18n-test', 'i18n-test.component.html'),
       '<p i18n>Hello world</p>'))
     .then(() => ng('xi18n', '--no-progress'))
     .then(() => expectFileToExist(join('src', 'messages.xlf')))

tests/e2e/tests/i18n/extract-output.ts

@@ -1,17 +1,15 @@
 import {join} from 'path';
 import {ng} from '../../utils/process';
 import {
-  expectFileToExist, deleteFile, writeFile,
+  expectFileToExist, writeFile,
   expectFileToMatch
 } from '../../utils/fs';
 
 
 export default function() {
-  const testComponentDir = join('src/app', 'i18n-test');
   return ng('generate', 'component', 'i18n-test')
-    .then(() => deleteFile(join(testComponentDir, 'i18n-test.component.html')))
     .then(() => writeFile(
-      join(testComponentDir, 'i18n-test.component.html'),
+      join('src/app/i18n-test', 'i18n-test.component.html'),
       '<p i18n>Hello world</p>'))
     .then(() => ng('xi18n', '--no-progress', '--output-path', 'src/locale'))
     .then(() => expectFileToExist(join('src', 'locale', 'messages.xlf')))

tests/e2e/tests/i18n/extract-xmb.ts

@@ -1,17 +1,15 @@
 import {join} from 'path';
 import {ng} from '../../utils/process';
 import {
-  expectFileToExist, deleteFile, writeFile,
+  expectFileToExist, writeFile,
   expectFileToMatch
 } from '../../utils/fs';
 
 
 export default function() {
-  const testComponentDir = join('src/app', 'i18n-test');
   return ng('generate', 'component', 'i18n-test')
-    .then(() => deleteFile(join(testComponentDir, 'i18n-test.component.html')))
     .then(() => writeFile(
-      join(testComponentDir, 'i18n-test.component.html'),
+      join('src/app/i18n-test', 'i18n-test.component.html'),
       '<p i18n>Hello world</p>'))
     .then(() => ng('xi18n', '--no-progress', '--i18n-format', 'xmb'))
     .then(() => expectFileToExist(join('src', 'messages.xmb')))