Set up mocha, chai and karma for sheriff-o-matic unit testing.

Tools/GardeningServer/ui/test/ct-builder-tests.html

+<!--
+Copyright 2014 The Chromium Authors. All rights reserved.
+Use of this source code is governed by a BSD-style license that can be
+found in the LICENSE file.
+-->
+
+<link rel="import" href="../ct-builder.html">
+
+<script>
+(function () {
+
+var expect = chai.expect;
+
+suite('ct-builder', function() {
+  var builder;
+
+  suiteSetup(function(done) {
+    builder = document.createElement('ct-builder');
+    builder.builder = 'WebKit Linux (dbg)';
+    requestAnimationFrame(function() { done(); });

[ojan, 2014/07/23 01:36:58]

Lol. I like that we can say done now instead of start to finish async tests. :)

[michaelpg, 2014/07/23 02:12:01]

If we wanted, we could do it qunit-style by removing the setup functions and
making the tests themselves async. But yeah, this is so much better.

+  });
+
+  suite('basic', function() {
+    test('basic', function() {
+      var a = builder.shadowRoot.querySelector('a');
+      expect(a.href);

[esprehn, 2014/07/25 23:59:39]

This is weird.

[michaelpg, 2014/07/28 20:35:05]

Acknowledged.

+      expect(a.href).include('WebKit+Linux+(dbg)');
+    });
+  });
+
+  suite('steps', function() {
+    setup(function(done) {
+      builder.steps = ['gclient_revert', 'compile', 'unittests'];
+      requestAnimationFrame(function() { done(); });
+    });
+
+    test('basic', function() {
+      var a = builder.shadowRoot.querySelector('a');
+      expect(a).ok;
+      expect(a.href).include('WebKit+Linux+(dbg)');
+      expect(a.innerText).include('gclient_revert, compile, unittests');
+    });
+  });
+});
+
+})()
+</script>