Issue 26926. Don't search hierarchy for static class members.

pkg/analysis_server/test/search/element_references_test.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library test.search.element_references;
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/protocol/protocol.dart';
 import 'package:analysis_server/src/services/index/index.dart';
@@ skipping 250 matching lines @@
     assertHasResult(SearchResultKind.DECLARATION, 'fff; // in B');
     assertHasResult(SearchResultKind.DECLARATION, 'fff; // in C');
     assertHasResult(SearchResultKind.WRITE, 'fff = 10;');
     assertHasResult(SearchResultKind.WRITE, 'fff = 20;');
     assertHasResult(SearchResultKind.WRITE, 'fff = 30;');
   }
 
   test_hierarchy_method() async {
     addTestFile('''
 class A {
-  mmm() {} // in A
+  mmm(_) {} // in A
 }
 class B extends A {
-  mmm() {} // in B
+  mmm(_) {} // in B
 }
 class C extends B {
-  mmm() {} // in C
+  mmm(_) {} // in C
 }
 main(A a, B b, C c) {
   a.mmm(10);
   b.mmm(20);
   c.mmm(30);
 }
 ''');
-    await findElementReferences('mmm() {} // in B', false);
+    await findElementReferences('mmm(_) {} // in B', false);
     expect(searchElement.kind, ElementKind.METHOD);
     assertHasResult(SearchResultKind.INVOCATION, 'mmm(10)');
     assertHasResult(SearchResultKind.INVOCATION, 'mmm(20)');
     assertHasResult(SearchResultKind.INVOCATION, 'mmm(30)');
   }
 
+  test_hierarchy_method_static() async {
+    addTestFile('''
+class A {
+  static void mmm(_) {} // in A
+}
+class B extends A {
+  static void mmm(_) {} // in B
+}
+class C extends B {
+  static void mmm(_) {} // in C
+}
+main() {
+  A.mmm(10);
+  B.mmm(20);
+  C.mmm(30);
+}
+''');
+    await findElementReferences('mmm(_) {} // in B', false);
+    expect(searchElement.kind, ElementKind.METHOD);
+    expect(results, hasLength(1));
+    assertHasResult(SearchResultKind.INVOCATION, 'mmm(20)');
+  }
+
   test_label() async {
     addTestFile('''
 main() {
 myLabel:
   for (int i = 0; i < 10; i++) {
     if (i == 2) {
       continue myLabel; // continue
     }
     break myLabel; // break
   }
@@ skipping 405 matching lines @@
   print(vvv);
 }
 ''');
     Request request = new SearchFindElementReferencesParams(testFile, 0, false)
         .toRequest('0');
     Response response = await waitResponse(request);
     expect(response.error, isNotNull);
     expect(response.error.code, RequestErrorCode.NO_INDEX_GENERATED);
   }
 }