Add test for 'getNavigation'.

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/src/domain_analysis.dart';
+import 'package:analysis_server/src/protocol.dart';
+import 'package:analyzer/file_system/file_system.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+import 'package:unittest/unittest.dart';
+
+import 'notification_navigation_test.dart';
+
+main() {
+  groupSep = ' | ';
+  defineReflectiveTests(GetNavigationTest);
+}
+
+@reflectiveTest
+class GetNavigationTest extends AbstractNavigationTest {
+  static const String requestId = 'test-getNavigtion';
+
+  @override
+  void setUp() {
+    super.setUp();
+    server.handlers = [new AnalysisDomainHandler(server),];
+    createProject();
+  }
+
+  test_afterAnalysisComplete() async {
+    addTestFile('''
+main() {
+  var test = 0;
+  print(test);
+}
+''');
+    await waitForTasksFinished();
+    await _getNavigation(testFile, testCode.indexOf('test);'), 0);
+    assertHasRegion('test);');
+    assertHasTarget('test = 0');
+  }
+
+  test_beforeAnalysisComplete() async {
+    addTestFile('''
+main() {
+  var test = 0;
+  print(test);
+}
+''');
+    await _getNavigation(testFile, testCode.indexOf('test);'), 0);
+    assertHasRegion('test);');
+    assertHasTarget('test = 0');
+  }
+
+  test_fileDoesNotExist() {
+    String file = '$projectPath/doesNotExist.dart';
+    return _checkInvalid(file, -1, -1);
+  }
+
+  test_fileWithoutContext() {
+    String file = '/outside.dart';
+    addFile(file, '''
+main() {
+  print(42);
+}
+''');
+    return _checkInvalid(file, -1, -1);
+  }
+
+  test_removeContextAfterRequest() async {
+    addTestFile('''
+main() {
+  var test = 0;
+  print(test);
+}
+''');
+    // handle the request synchronously
+    Request request =
+        _createGetNavigationRequest(testFile, testCode.indexOf('test);'), 0);
+    server.handleRequest(request);
+    // remove context, causes sending an "invalid file" error
+    {
+      Folder projectFolder = resourceProvider.getResource(projectPath);
+      server.contextDirectoryManager.removeContext(projectFolder);
+    }
+    // wait for an error response
+    Response response = await serverChannel.waitForResponse(request);
+    expect(response.error, isNotNull);
+    expect(response.error.code, RequestErrorCode.GET_NAVIGATION_INVALID_FILE);
+  }
+
+  _checkInvalid(String file, int offset, int length) async {
+    Request request = _createGetNavigationRequest(file, offset, length);
+    Response response = await serverChannel.sendRequest(request);
+    expect(response.error, isNotNull);
+    expect(response.error.code, RequestErrorCode.GET_NAVIGATION_INVALID_FILE);
+  }
+
+  Request _createGetNavigationRequest(String file, int offset, int length) {
+    return new AnalysisGetNavigationParams(file, offset, length)
+        .toRequest(requestId);
+  }
+
+  _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;
+  }
+}