Update class and interface cycle tests

tests/language/class_cycle2_test.dart

Index: tests/language/class_cycle2_test.dart
diff --git a/tests/language/class_cycle_negative_test.dart b/tests/language/class_cycle2_test.dart
similarity index 59%
rename from tests/language/class_cycle_negative_test.dart
rename to tests/language/class_cycle2_test.dart
index f54b9f853e788a722eb9604e9036a95bb1588873..5e352b3ffd4321eade888c132717ac0a1133bc00 100644
--- a/tests/language/class_cycle_negative_test.dart
+++ b/tests/language/class_cycle2_test.dart
@@ -3,22 +3,16 @@
 // BSD-style license that can be found in the LICENSE file.
 // Check fail because of cycles in super class relationship.
 
-class C extends B {
+class C extends B {}
 
-}
-
-class A extends B {
-
-}
+class A extends B {}
 
-class B extends A {
+class B
+  extends A  /// 01: compile-time error
+  extends A  /// 02: compile-time error
+{}
 
-}
-
-class ClassCycleNegativeTest {
-  static testMain() {
-  }
-}
 main() {
-  ClassCycleNegativeTest.testMain();
+  new C();  /// 01: continued
+  new List<C>();  /// 02: continued
 }