2 files changed, 140 insertions, 0 deletions
diff --git a/chrome/test/data/webui/mocha_adapter.js b/chrome/test/data/webui/mocha_adapter.js
new file mode 100644
index 0000000..8f85410
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+++ b/chrome/test/data/webui/mocha_adapter.js
@@ -0,0 +1,62 @@
+// Copyright 2015 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.
+
+/**
+ * @fileoverview A mocha adapter for BrowserTests. To use, include mocha.js and
+ * mocha_adapter.js in a WebUIBrowserTest's extraLibraries array.
+ */
+
+/**
+ * Initializes a mocha reporter for the BrowserTest framework, which registers
+ * event listeners on the given Runner.
+ * @constructor
+ * @param {Runner} runner Runs the tests and provides hooks for test results
+ *     (see Runner.prototype in mocha.js).
+ */
+function BrowserTestReporter(runner) {
+  var passes = 0;
+  var failures = 0;
+
+  // Increment passes for each passed test.
+  runner.on('pass', function(test) {
+    passes++;
+  });
+
+  // Report failures. Mocha only catches "assert" failures, because "expect"
+  // failures are caught by test_api.js.
+  runner.on('fail', function(test, err) {
+    failures++;
+    var message = 'Mocha test failed: ' + test.fullTitle() + '\n';
+
+    // Remove unhelpful mocha lines from stack trace.
+    var stack = err.stack.split('\n');
+    for (var i = 0; i < stack.length; i++) {
+      if (stack[i].indexOf('mocha.js:') == -1)
+        message += stack[i] + '\n';
+    }
+
+    console.error(message);
+  });
+
+  // Report the results to the test API.
+  runner.on('end', function() {
+    if (failures == 0) {
+      testDone();
+      return;
+    }
+    testDone([
+      false,
+      'Test Errors: ' + failures + '/' + (passes + failures) +
+      ' tests had failed assertions.'
+    ]);
+  });
+}
+
+// Configure mocha.
+mocha.setup({
+  // Use TDD interface instead of BDD.
+  ui: 'tdd',
+  // Use custom reporter to interface with BrowserTests.
+  reporter: BrowserTestReporter,
+});
diff --git a/chrome/test/data/webui/polymer_browser_test_base.js b/chrome/test/data/webui/polymer_browser_test_base.js
new file mode 100644
index 0000000..e628eda
--- /dev/null
+++ b/chrome/test/data/webui/polymer_browser_test_base.js
@@ -0,0 +1,78 @@
+// Copyright 2015 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.
+
+/**
+ * @fileoverview Framework for running JavaScript tests of Polymer elements.
+ */
+
+/**
+ * Test fixture for Polymer element testing.
+ * @constructor
+ * @extends testing.Test
+ */
+function PolymerTest() {
+}
+
+PolymerTest.prototype = {
+  __proto__: testing.Test.prototype,
+
+  /**
+   * Navigate to a WebUI to satisfy BrowserTest conditions. Override to load a
+   * more useful WebUI.
+   * @override
+   */
+  browsePreload: 'chrome://chrome-urls/',
+
+  /**
+   * The mocha adapter assumes all tests are async.
+   * @override
+   * @final
+   */
+  isAsync: true,
+
+  /**
+   * @override
+   * @final
+   */
+  extraLibraries: ['../../../../third_party/mocha/mocha.js',
+                   'mocha_adapter.js'],
+
+  /** @override */
+  setUp: function() {
+    testing.Test.prototype.setUp.call(this);
+
+    // Import Polymer before running tests.
+    suiteSetup(function(done) {
+      var link = document.createElement('link');
+      link.rel = 'import';
+      link.onload = function() {
+        done();
+      };
+      link.onerror = function() {
+        done(new Error('Failed to load Polymer!'));
+      };
+      link.href = 'chrome://resources/polymer/v0_8/polymer/polymer.html';
+      document.head.appendChild(link);
+    });
+  },
+};
+
+/**
+ * Imports the HTML file, then calls |done| on success or throws an error.
+ * @param {String} href The URL to load.
+ * @param {Function} done The done callback.
+ */
+PolymerTest.importHref = function(href, done) {
+  Polymer.Base.importHref(
+      href,
+      function() { done(); },
+      function() { throw new Error('Failed to load ' + href); });
+};
+
+/**
+ * Removes all content from the body.
+ */
+PolymerTest.clearBody = function() {
+  document.body.innerHTML = '';
+};