fix(e2e): return exit codes on failure of e2e tests

.travis.yml

@@ -19,7 +19,7 @@ before_install:
   - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then source ~/.nvm/nvm-exec; fi
   - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew update; fi
   - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew tap caskroom/cask; fi
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew cask install google-chrome; fi
+  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew cask install google-chrome --force; fi
   - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then export DISPLAY=:99.0; fi
   - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sh -e /etc/init.d/xvfb start; fi
   - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then export CHROME_BIN=chromium-browser; fi

addon/ng2/tasks/e2e.ts

@@ -6,17 +6,19 @@ import {exec} from 'child_process';
 module.exports = Task.extend({
   run: function () {
     var ui = this.ui;
+    var exitCode = 0;
 
     return new Promise((resolve) => {
       exec(`npm run e2e -- ${this.project.ngConfig.e2e.protractor.config}`, (err, stdout, stderr) => {
         ui.writeLine(stdout);
-        if (err) {
+        if (err) {        
           ui.writeLine(stderr);
           ui.writeLine(chalk.red('Some end-to-end tests failed, see above.'));
+          exitCode = typeof err.code === 'number' ? err.code : 1;
         } else {
           ui.writeLine(chalk.green('All end-to-end tests pass.'));
         }
-        resolve();
+        resolve(exitCode);
       });
     });
   }

tests/acceptance/e2e.spec.js

@@ -0,0 +1,54 @@
+'use strict';
+
+var ng = require('../helpers/ng');
+var path = require('path');
+var tmp = require('../helpers/tmp');
+var conf = require('ember-cli/tests/helpers/conf');
+var expect = require('chai').expect;
+var root = path.join(process.cwd(), 'tmp');
+
+describe('Acceptance ng e2e: ', function () {
+  before(function () {
+    this.timeout(100000);
+
+    conf.setup();
+
+    return tmp.setup('./tmp').then(function () {
+      process.chdir('./tmp');
+    })
+  });
+
+  after(function () {
+    this.timeout(100000);
+
+    conf.restore();
+    return tmp.teardown('./tmp');
+  });
+
+  it('ng e2e fails outside of angular-cli project', function () {
+    this.timeout(100000);
+
+    expect(ng(['e2e'])).to.throw;
+  });
+
+  it('ng e2e fails without a locally running angular-cli project', function () {
+    this.timeout(240000);
+
+    function executor(resolve, reject) {
+      ng(['new', 'test-project', '--skip-npm', '--skip-bower']).then(function () {
+        process.chdir(path.join(root, 'test-project'));
+      })
+      .then(function () {
+        ng(['e2e']).then(function(code) {
+          const exitCode = typeof code === 'number' ? code : 0;
+          exitCode !== 0 ? resolve() : reject('ng e2e command closed with error');
+        })
+      });
+    }
+
+    return new Promise(executor)
+      .catch((msg) => {
+        throw new Error(msg);
+      });
+  });
+});