Compute subtyped names.

pkg/analyzer/test/src/dart/analysis/referenced_names_test.dart

Index: pkg/analyzer/test/src/dart/analysis/referenced_names_test.dart
diff --git a/pkg/analyzer/test/src/dart/analysis/referenced_names_test.dart b/pkg/analyzer/test/src/dart/analysis/referenced_names_test.dart
index 2a0ea6c919a541b09b4797234dbb56b2bf080ee2..994485d0b8a25fc722d2cf92a2f4f91747b21abc 100644
--- a/pkg/analyzer/test/src/dart/analysis/referenced_names_test.dart
+++ b/pkg/analyzer/test/src/dart/analysis/referenced_names_test.dart
@@ -11,12 +11,13 @@ import '../../../generated/parser_test.dart';
 
 main() {
   defineReflectiveSuite(() {
-    defineReflectiveTests(ReferencedNamesBuilderTest);
+    defineReflectiveTests(ComputeReferencedNamesTest);
+    defineReflectiveTests(ComputeSubtypedNamesTest);
   });
 }
 
 @reflectiveTest
-class ReferencedNamesBuilderTest extends ParserTestCase {
+class ComputeReferencedNamesTest extends ParserTestCase {
   test_class_constructor() {
     Set<String> names = _computeReferencedNames('''
 class U {
@@ -409,3 +410,37 @@ main() {
     return computeReferencedNames(unit);
   }
 }
+
+@reflectiveTest
+class ComputeSubtypedNamesTest extends ParserTestCase {
+  void test_prefixed() {
+    Set<String> names = _computeSubtypedNames('''
+import 'lib.dart' as p;
+class X extends p.A with p.B implements p.C {}
+''');
+    expect(names, unorderedEquals(['A', 'B', 'C']));
+  }
+
+  void test_typeArguments() {
+    Set<String> names = _computeSubtypedNames('''
+import 'lib.dart';
+class X extends A<B> {}
+''');
+    expect(names, unorderedEquals(['A']));
+  }
+
+  void test_unprefixed() {
+    Set<String> names = _computeSubtypedNames('''
+import 'lib.dart';
+class X extends A {}
+class Y extends A with B {}
+class Z implements A, B, C {}
+''');
+    expect(names, unorderedEquals(['A', 'B', 'C']));
+  }
+
+  Set<String> _computeSubtypedNames(String code) {
+    CompilationUnit unit = parseCompilationUnit2(code);
+    return computeSubtypedNames(unit);
+  }
+}