Retrying the setUp/tearDown chaining change. This is the same as r21819 but with a change to schedu…

pkg/unittest/lib/src/test_case.dart

Index: pkg/unittest/lib/src/test_case.dart
===================================================================
--- pkg/unittest/lib/src/test_case.dart	(revision 21853)
+++ pkg/unittest/lib/src/test_case.dart	(working copy)
@@ -61,9 +61,9 @@
   Completer _testComplete;
 
   TestCase._internal(this.id, this.description, this.testFunction)
-  : currentGroup = _currentGroup,
-    setUp = _testSetup,
-    tearDown = _testTeardown;
+  : currentGroup = _currentContext.groupName,
+    setUp = _currentContext.testSetup,
+    tearDown = _currentContext.testTeardown;
 
   bool get isComplete => !enabled || result != null;