Add special-case support for Polymer tests.

lib/src/runner/browser/server.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library test.runner.browser.server;
 
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
@@ skipping 18 matching lines @@
 import '../load_exception.dart';
 import 'browser.dart';
 import 'browser_manager.dart';
 import 'compiler_pool.dart';
 import 'chrome.dart';
 import 'content_shell.dart';
 import 'dartium.dart';
 import 'firefox.dart';
 import 'internet_explorer.dart';
 import 'phantom_js.dart';
+import 'polymer.dart';
 import 'safari.dart';
 
 /// A server that serves JS-compiled tests to browsers.
 ///
 /// A test suite may be loaded for a given file using [loadSuite].
 class BrowserServer {
   /// Starts the server.
   ///
   /// [root] is the root directory that the server should serve. It defaults to
   /// the working directory.
@@ skipping 207 matching lines @@
       throw new LoadException(
           path,
           '"${htmlPath}" must contain <script src="packages/test/dart.js">'
               '</script>.');
     }
 
     var suiteUrl;
     if (_pubServeUrl != null) {
       var suitePrefix = p.withoutExtension(
           p.relative(path, from: p.join(_root, 'test')));
-      var jsUrl = _pubServeUrl.resolve(
+
+      var jsUrl;
+      // Polymer generates a bootstrap entrypoint that wraps the entrypoint we
+      // see on disk, and modifies the HTML file to point to the bootstrap
+      // instead. To make sure we get the right source maps and wait for the
+      // right file to compile, we have some Polymer-specific logic here to load
+      // the boostrap instead of the unwrapped file.
+      if (isPolymerEntrypoint(path)) {
+        jsUrl = _pubServeUrl.resolve(
+            "$suitePrefix.html.polymer.bootstrap.dart.browser_test.dart.js");
+      } else {
+        jsUrl = _pubServeUrl.resolve(
           '$suitePrefix.dart.browser_test.dart.js');
+      }
+
       await _pubServeSuite(path, jsUrl);
       suiteUrl = _pubServeUrl.resolveUri(p.toUri('$suitePrefix.html'));
     } else {
       if (browser.isJS) await _compileSuite(path);
       if (_closed) return null;
       suiteUrl = url.resolveUri(p.toUri(
           p.withoutExtension(p.relative(path, from: _root)) + ".html"));
     }
 
     if (_closed) return null;
@@ skipping 182 matching lines @@
       await Future.wait(futures);
 
       if (_pubServeUrl == null) {
         new Directory(_compiledDir).deleteSync(recursive: true);
       } else {
         _http.close();
       }
     });
   }
 }