Fix AST-based type inference of enum types.

pkg/analyzer/test/src/task/strong/inferred_type_test.dart

Index: pkg/analyzer/test/src/task/strong/inferred_type_test.dart
diff --git a/pkg/analyzer/test/src/task/strong/inferred_type_test.dart b/pkg/analyzer/test/src/task/strong/inferred_type_test.dart
index 810c05239cd8bad3c6b5438b7e345012fbaa7ddb..2465bfd65aae2d82459ec5b4cd27eb0a3afce15a 100644
--- a/pkg/analyzer/test/src/task/strong/inferred_type_test.dart
+++ b/pkg/analyzer/test/src/task/strong/inferred_type_test.dart
@@ -2287,6 +2287,24 @@ class Foo {
 }''');
   }
 
+  void test_inferredType_isEnum() {
+    var mainUnit = checkFile('''
+enum E { v1 }
+final x = E.v1;
+''');
+    var x = mainUnit.topLevelVariables[0];
+    expect(x.type.toString(), 'E');
+  }
+
+  void test_inferredType_isEnumValues() {
+    var mainUnit = checkFile('''
+enum E { v1 }
+final x = E.values;
+''');
+    var x = mainUnit.topLevelVariables[0];
+    expect(x.type.toString(), 'List<E>');
+  }
+
   void test_inferredType_isTypedef() {
     var mainUnit = checkFile('''
 typedef void F();