[Atom] Issue 424. Fix for 'getNavigation' and index expressions.

pkg/analysis_server/test/analysis/get_navigation_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.analysis.get_navigation;
 
 import 'package:analysis_server/plugin/protocol/protocol.dart';
 import 'package:analysis_server/src/domain_analysis.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
@@ skipping 40 matching lines @@
     addFile(
         file,
         '''
 main() {
   print(42);
 }
 ''');
     return _checkInvalid(file, -1, -1);
   }
 
-  test_issue24599_importDirective() async {
+  test_importDirective() async {
     addTestFile('''
 import 'dart:math';
 
 main() {
 }''');
     await waitForTasksFinished();
     await _getNavigation(testFile, 0, 17);
     expect(regions, hasLength(1));
     assertHasRegionString("'dart:math'");
     expect(testTargets, hasLength(1));
     expect(testTargets[0].kind, ElementKind.LIBRARY);
   }
 
-  test_issue24599_importKeyword() async {
+  test_importKeyword() async {
     addTestFile('''
 import 'dart:math';
 
 main() {
 }''');
     await waitForTasksFinished();
     await _getNavigation(testFile, 0, 1);
     expect(regions, hasLength(1));
     assertHasRegionString("'dart:math'");
     expect(testTargets, hasLength(1));
     expect(testTargets[0].kind, ElementKind.LIBRARY);
   }
 
-  test_issue24599_importUri() async {
+  test_importUri() async {
     addTestFile('''
 import 'dart:math';
 
 main() {
 }''');
     await waitForTasksFinished();
     await _getNavigation(testFile, 7, 11);
     expect(regions, hasLength(1));
     assertHasRegionString("'dart:math'");
     expect(testTargets, hasLength(1));
@@ skipping 23 matching lines @@
       assertHasRegion('bbb +');
       assertHasTarget('bbb = 2');
     }
     {
       assertHasRegion('ccc +');
       assertHasTarget('ccc = 3');
     }
     assertNoRegionAt('ddd)');
   }
 
+  test_operator_index() async {
+    addTestFile('''
+class A {
+  A operator [](index) => null;
+  operator []=(index, A value) {}
+}
+main() {
+  var a = new A();
+  a[0] // [];
+  a[1] = 1; // []=;
+  a[2] += 2;
+}
+''');
+    await waitForTasksFinished();
+    {
+      String search = '[0';
+      await _getNavigation(testFile, testCode.indexOf(search), 1);
+      assertHasOperatorRegion(search, 1, '[](index)', 2);
+    }
+    {
+      String search = '] // []';
+      await _getNavigation(testFile, testCode.indexOf(search), 1);
+      assertHasOperatorRegion(search, 1, '[](index)', 2);
+    }
+    {
+      String search = '[1';
+      await _getNavigation(testFile, testCode.indexOf(search), 1);
+      assertHasOperatorRegion(search, 1, '[]=(index', 3);
+    }
+    {
+      String search = '] = 1';
+      await _getNavigation(testFile, testCode.indexOf(search), 1);
+      assertHasOperatorRegion(search, 1, '[]=(index', 3);
+    }
+    {
+      String search = '[2';
+      await _getNavigation(testFile, testCode.indexOf(search), 1);
+      assertHasOperatorRegion(search, 1, '[]=(index', 3);
+    }
+    {
+      String search = '] += 2';
+      await _getNavigation(testFile, testCode.indexOf(search), 1);
+      assertHasOperatorRegion(search, 1, '[]=(index', 3);
+    }
+  }
+
   test_removeContextAfterRequest() async {
     addTestFile('''
 main() {
   var test = 0;
   print(test);
 }
 ''');
     // handle the request synchronously
     Request request =
         _createGetNavigationRequest(testFile, testCode.indexOf('test);'), 0);
@@ skipping 50 matching lines @@
   _getNavigation(String file, int offset, int length) async {
     Request request = _createGetNavigationRequest(file, offset, length);
     Response response = await serverChannel.sendRequest(request);
     AnalysisGetNavigationResult result =
         new AnalysisGetNavigationResult.fromResponse(response);
     targetFiles = result.files;
     targets = result.targets;
     regions = result.regions;
   }
 }