| Index: lib/src/backend/live_test_controller.dart
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| diff --git a/lib/src/backend/live_test_controller.dart b/lib/src/backend/live_test_controller.dart
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| index 71731b6f5cf8a31feac0517f63a4e92c9254983d..fd35458f871fa3e405eec9b655fc65b2ae36c391 100644
 | 
| --- a/lib/src/backend/live_test_controller.dart
 | 
| +++ b/lib/src/backend/live_test_controller.dart
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| @@ -159,6 +159,9 @@ class LiveTestController {
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|    Future _run() {
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|      if (_runCalled) {
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|        throw new StateError("LiveTest.run() may not be called more than once.");
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| +    } else if (_isClosed) {
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| +      throw new StateError("LiveTest.run() may not be called for a closed "
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| +          "test.");
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|      }
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|      _runCalled = true;
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|  
 | 
| 
 |