Report MIXIN_TYPEDEF_CYCLE.

editor/tools/plugins/com.google.dart.engine_test/src/com/google/dart/engine/resolver/CompileTimeErrorCodeTest.java

Index: editor/tools/plugins/com.google.dart.engine_test/src/com/google/dart/engine/resolver/CompileTimeErrorCodeTest.java
diff --git a/editor/tools/plugins/com.google.dart.engine_test/src/com/google/dart/engine/resolver/CompileTimeErrorCodeTest.java b/editor/tools/plugins/com.google.dart.engine_test/src/com/google/dart/engine/resolver/CompileTimeErrorCodeTest.java
index afbb123a434f08ddead09e501780a8a9a003e6eb..ea653ec9bc8c8a7e234bacd838d2245c04efc450 100644
--- a/editor/tools/plugins/com.google.dart.engine_test/src/com/google/dart/engine/resolver/CompileTimeErrorCodeTest.java
+++ b/editor/tools/plugins/com.google.dart.engine_test/src/com/google/dart/engine/resolver/CompileTimeErrorCodeTest.java
@@ -3233,6 +3233,25 @@ public class CompileTimeErrorCodeTest extends ResolverTestCase {
     verify(source);
   }
 
+  public void test_typeAliasCannotRereferenceItself_mixin_direct() throws Exception {
+    Source source = addSource(createSource(//
+    "typedef M = Object with M;"));
+    resolve(source);
+    assertErrors(CompileTimeErrorCode.TYPE_ALIAS_CANNOT_REFERENCE_ITSELF);
+    verify(source);
+  }
+
+  public void test_typeAliasCannotRereferenceItself_mixin_indirect() throws Exception {
+    Source source = addSource(createSource(//
+        "typedef M1 = Object with M2;",
+        "typedef M2 = Object with M1;"));
+    resolve(source);
+    assertErrors(
+        CompileTimeErrorCode.TYPE_ALIAS_CANNOT_REFERENCE_ITSELF,
+        CompileTimeErrorCode.TYPE_ALIAS_CANNOT_REFERENCE_ITSELF);
+    verify(source);
+  }
+
   public void test_typeArgumentNotMatchingBounds_const() throws Exception {
     Source source = addSource(createSource(//
         "class A {}",