tests(schematic): add back unit tests for ng-add

packages/schematics/src/collection/ng-add/index.ts

@@ -654,6 +654,10 @@ function checkCanConvertToWorkspace(options: Schema) {
         throw new Error('Cannot find package.json');
       }
 
+      if (!host.exists('angular.json')) {
+        throw new Error('Cannot find angular.json');
+      }
+
       // TODO: This restriction should be lited
       const angularJson = readJsonInTree(host, 'angular.json');
       if (Object.keys(angularJson.projects).length > 2) {
@@ -682,7 +686,7 @@ function checkCanConvertToWorkspace(options: Schema) {
       context.logger.error(
         'Your workspace could not be converted into an Nx Workspace because of the above error.'
       );
-      throw new Error();
+      throw e;
     }
   };
 }

packages/schematics/src/collection/ng-add/ng-add.spec.ts

@@ -2,7 +2,7 @@ import { SchematicTestRunner } from '@angular-devkit/schematics/testing';
 import * as path from 'path';
 import { Tree, VirtualTree } from '@angular-devkit/schematics';
 
-xdescribe('workspace', () => {
+describe('workspace', () => {
   const schematicRunner = new SchematicTestRunner(
     '@nrwl/schematics',
     path.join(__dirname, '../../collection.json')
@@ -23,8 +23,29 @@ xdescribe('workspace', () => {
   it('should error if no e2e/protractor.conf.js is present', () => {
     expect(() => {
       appTree.create('/package.json', JSON.stringify({}));
-      schematicRunner.runSchematic('ng-add', { name: 'myApp' }, appTree);
-    }).toThrow('Cannot find e2e/protractor.conf.js');
+      appTree.create(
+        '/angular.json',
+        JSON.stringify({
+          projects: {
+            proj1: {
+              architect: {}
+            },
+            'proj1-e2e': {
+              architect: {
+                e2e: {
+                  options: {
+                    protractorConfig: 'e2e/protractor.conf.js'
+                  }
+                }
+              }
+            }
+          }
+        })
+      );
+      schematicRunner.runSchematic('ng-add', { name: 'proj1' }, appTree);
+    }).toThrow(
+      'An e2e project was specified but e2e/protractor.conf.js could not be found.'
+    );
   });
 
   it('should error if no angular.json is present', () => {
@@ -36,7 +57,6 @@ xdescribe('workspace', () => {
   });
 
   it('should error if the angular.json specifies more than one app', () => {
-    expect(() => {
     appTree.create('/package.json', JSON.stringify({}));
     appTree.create('/e2e/protractor.conf.js', '');
     appTree.create(
@@ -50,6 +70,7 @@ xdescribe('workspace', () => {
         }
       })
     );
+    expect(() => {
       schematicRunner.runSchematic('ng-add', { name: 'myApp' }, appTree);
     }).toThrow('Can only convert projects with one app');
   });