Can not find Element in Dynamic element.

compiler/javatests/com/google/dart/compiler/resolver/ResolverTest.java

Index: compiler/javatests/com/google/dart/compiler/resolver/ResolverTest.java
diff --git a/compiler/javatests/com/google/dart/compiler/resolver/ResolverTest.java b/compiler/javatests/com/google/dart/compiler/resolver/ResolverTest.java
index 28953a5822333b3a1eae72ffc2ee91bd3cfb343e..bff4a1b251f43fa1ba07c213da2f2a1f1245fde7 100644
--- a/compiler/javatests/com/google/dart/compiler/resolver/ResolverTest.java
+++ b/compiler/javatests/com/google/dart/compiler/resolver/ResolverTest.java
@@ -11,6 +11,7 @@ import com.google.dart.compiler.ErrorCode;
 import com.google.dart.compiler.ast.DartClass;
 import com.google.dart.compiler.testing.TestCompilerContext;
 import com.google.dart.compiler.testing.TestCompilerContext.EventKind;
+import com.google.dart.compiler.type.DynamicType;
 import com.google.dart.compiler.type.InterfaceType;
 import com.google.dart.compiler.type.Type;
 import com.google.dart.compiler.type.Types;
@@ -535,4 +536,21 @@ public class ResolverTest extends ResolverTestCase {
         "}"),
         DartCompilerErrorCode.NO_SUCH_TYPE);
   }
+
+  /**
+   * When {@link SupertypeResolver} can not find "UnknownA", it uses {@link DynamicType}, which
+   * returns {@link DynamicElement}. By itself, this is OK. However when we later try to resolve
+   * second unknown type "UnknownB", we expect in {@link Elements#findElement()} specific
+   * {@link ClassElement} implementation and {@link DynamicElement} is not valid.
+   */
+  public void test_classDynamicElement_fieldDynamicElement() throws Exception {
+    resolveAndTest(Joiner.on("\n").join(
+        "class Object {}",
+        "class MyClass implements UnknownA {",
+        "  UnknownB field;",
+        "}"),
+        DartCompilerErrorCode.NO_SUCH_TYPE,
+        DartCompilerErrorCode.NOT_A_CLASS_OR_INTERFACE,
+        DartCompilerErrorCode.NO_SUCH_TYPE);
+  }
 }