Issue 28387. Test for search of classes defined in SDK.

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

 // Copyright (c) 2016, 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.
 
 import 'dart:async';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
@@ skipping 200 matching lines @@
     ClassElement element = _findElementAtString('A p');
     Element p = _findElement('p');
     Element main = _findElement('main');
     var expected = [
       _expectId(p, SearchResultKind.REFERENCE, 'A p'),
       _expectId(main, SearchResultKind.REFERENCE, 'A v')
     ];
     await _verifyReferences(element, expected);
   }
 
+  test_searchReferences_ClassElement_definedInSdk() async {
+    await _resolveTestUnit('''
+import 'dart:math';
+Random v1;
+Random v2;
+''');
+
+    // Find the Random class element in the SDK source.
+    // IDEA performs search always at declaration, never at reference.

[Brian Wilkerson, 2017/01/25 14:52:42]

I don't understand the second line of this comment. In what way is this test
specific to IntelliJ?

[scheglov, 2017/01/25 15:02:19]

Yes, kind of.

When you search on Random in "Random v1", IDEA uses navigation notification
results to find out that Random is defined in /your/sdk/lib/math/random.dart @
1234. Then it issues the search request in this SDK file at 1234.

So, this test tries to do the same.

[Brian Wilkerson, 2017/01/25 15:09:27]

Ok. It makes perfect sense to test that code path if we have a client using it.
It also makes sense to test the more direct path because server should also
support searching from a use site. Please either add the test or a TODO so we
don't forget to add it later.

[scheglov, 2017/01/25 16:38:57]

Done.

+    ClassElement randomElement;
+    {
+      String randomPath = sdk.mapDartUri('dart:math').fullName;
+      AnalysisResult result = await driver.getResult(randomPath);
+      randomElement = result.unit.element.getType('Random');
+    }
+
+    Element v1 = _findElement('v1');
+    Element v2 = _findElement('v2');
+    var expected = [
+      _expectId(v1, SearchResultKind.REFERENCE, 'Random v1;'),
+      _expectId(v2, SearchResultKind.REFERENCE, 'Random v2;'),
+    ];
+    await _verifyReferences(randomElement, expected);
+  }
+
   test_searchReferences_CompilationUnitElement() async {
     provider.newFile(_p('$testProject/foo.dart'), '');
     await _resolveTestUnit('''
 import 'foo.dart'; // import
 export 'foo.dart'; // export
 ''');
     CompilationUnitElement element =
         testLibraryElement.imports[0].importedLibrary.definingCompilationUnit;
     int uriLength = "'foo.dart'".length;
     var expected = [
@@ skipping 905 matching lines @@
     List<SearchResult> results = await driver.search.references(element);
     _assertResults(results, expectedMatches);
     expect(results, hasLength(expectedMatches.length));
   }
 
   static void _assertResults(
       List<SearchResult> matches, List<ExpectedResult> expectedMatches) {
     expect(matches, unorderedEquals(expectedMatches));
   }
 }