Fix Safari "multitest" failure.

pkg/unittest/lib/html_individual_config.dart

 // Copyright (c) 2011, 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.
 
 /**
  * A unit test library for running groups of tests in a browser, instead of the
  * entire test file. This is especially used for large tests files that have
  * many subtests, so we can mark groups as failing at a finer granularity than
  * the entire test file.
  *
  * To use, import this file, and call [useHtmlIndividualConfiguration] at the
  * start of your set sequence. Important constraint: your group descriptions
  * MUST NOT contain spaces.
  */
 library unittest_html_individual_config;
 
 import 'dart:html';
 import 'unittest.dart' as unittest;
 import 'html_config.dart' as htmlconfig;
 
 class HtmlIndividualConfiguration extends htmlconfig.HtmlConfiguration {
 
   String _noSuchTest = '';
   HtmlIndividualConfiguration(isLayoutTest): super(isLayoutTest);
 
   void onStart() {
-    var testGroupName = window.location.hash;
-    if (testGroupName != '') {
+    var testGroupName = window.location.search;
+    var groupVar = '&group=';

[kustermann, 2013/01/31 00:07:01]

I'd prefer something like:
for (var getParameter in window.location.search.split('&')) {
  if (getParameter.startswith('group=')) {
    testGroupName = getParameter.split('=')[1];
  }
}

As far as I can see, your code does not support
"http://host/path?group=myGroup", since you search for '&group=' and not
'?group=' !

+    if (testGroupName != '' && testGroupName.contains(groupVar)) {
       try {
-        testGroupName = testGroupName.substring(1); // cut off the #
-        unittest.filterTests('^$testGroupName');
+        testGroupName = testGroupName.substring(
+            testGroupName.indexOf(groupVar) + groupVar.length);
+        var endIndex = testGroupName.indexOf('&');
+        testGroupName = testGroupName.substring(0,
+            endIndex == -1 ? testGroupName.length : endIndex);
+        unittest.filterTests('^$testGroupName${unittest.groupSep}');
       } catch (e) {
         print('tried to match "$testGroupName"');
         print('NO_SUCH_TEST');
       }
     }
     super.onStart();
   }
 }
 
 void useHtmlIndividualConfiguration([bool isLayoutTest = false]) {
   if (unittest.config != null) return;
   unittest.configure(new HtmlIndividualConfiguration(isLayoutTest));
 }