pkg/analysis_server/test/analysis_server_test.dart - sdk.git - Git at Google

 // 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_server;

 import 'dart:async';

 import 'package:analysis_server/plugin/protocol/protocol.dart';
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/constants.dart';
 import 'package:analysis_server/src/context_manager.dart';
 import 'package:analysis_server/src/domain_server.dart';
 import 'package:analysis_server/src/operation/operation.dart';
 import 'package:analysis_server/src/plugin/server_plugin.dart';
 import 'package:analyzer/exception/exception.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/instrumentation/instrumentation.dart';
 import 'package:analyzer/source/package_map_resolver.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:plugin/manager.dart';
 import 'package:plugin/plugin.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 import 'package:typed_mock/typed_mock.dart';

 import 'mock_sdk.dart';
 import 'mocks.dart';

 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(AnalysisServerTest);
   });
 }

 @reflectiveTest
 class AnalysisServerTest {
   MockServerChannel channel;
   AnalysisServer server;
   MemoryResourceProvider resourceProvider;
   MockPackageMapProvider packageMapProvider;

   /**
    * Verify that getAnalysisContextForSource returns the correct contexts even
    * for sources that are included by multiple contexts.
    *
    * See dartbug.com/21898
    */
   Future fail_getAnalysisContextForSource_crossImports() {
     // Subscribe to STATUS so we'll know when analysis is done.
     server.serverServices = [ServerService.STATUS].toSet();
     // Analyze project foo containing foo.dart and project bar containing
     // bar.dart.
     resourceProvider.newFolder('/foo');
     resourceProvider.newFolder('/bar');
     File foo = resourceProvider.newFile(
         '/foo/foo.dart',
         '''
 libary foo;
 import "../bar/bar.dart";
 ''');
     Source fooSource = foo.createSource();
     File bar = resourceProvider.newFile(
         '/bar/bar.dart',
         '''
 library bar;
 import "../foo/foo.dart";
 ''');
     Source barSource = bar.createSource();
     server.setAnalysisRoots('0', ['/foo', '/bar'], [], {});
     return server.onAnalysisComplete.then((_) {
       expect(server.statusAnalyzing, isFalse);
       // Make sure getAnalysisContext returns the proper context for each.
       AnalysisContext fooContext =
           server.getAnalysisContextForSource(fooSource);
       expect(fooContext, isNotNull);
       AnalysisContext barContext =
           server.getAnalysisContextForSource(barSource);
       expect(barContext, isNotNull);
       expect(fooContext, isNot(same(barContext)));
       expect(fooContext.getKindOf(fooSource), SourceKind.LIBRARY);
       expect(fooContext.getKindOf(barSource), SourceKind.UNKNOWN);
       expect(barContext.getKindOf(fooSource), SourceKind.UNKNOWN);
       expect(barContext.getKindOf(barSource), SourceKind.LIBRARY);
     });
   }

   /**
    * Verify that getAnalysisContextForSource returns the correct contexts even
    * for sources that haven't been analyzed yet.
    *
    * See dartbug.com/21898
    */
   Future fail_getAnalysisContextForSource_unanalyzed() {
     // Subscribe to STATUS so we'll know when analysis is done.
     server.serverServices = [ServerService.STATUS].toSet();
     // Analyze project foo containing foo.dart and project bar containing
     // bar.dart.
     resourceProvider.newFolder('/foo');
     resourceProvider.newFolder('/bar');
     File foo = resourceProvider.newFile('/foo/foo.dart', 'library lib;');
     Source fooSource = foo.createSource();
     File bar = resourceProvider.newFile('/bar/bar.dart', 'library lib;');
     Source barSource = bar.createSource();
     server.setAnalysisRoots('0', ['/foo', '/bar'], [], {});
     AnalysisContext fooContext = server.getAnalysisContextForSource(fooSource);
     expect(fooContext, isNotNull);
     AnalysisContext barContext = server.getAnalysisContextForSource(barSource);
     expect(barContext, isNotNull);
     expect(fooContext, isNot(same(barContext)));
     return server.onAnalysisComplete.then((_) {
       expect(server.statusAnalyzing, isFalse);
       // Make sure getAnalysisContext returned the proper context for each.
       expect(fooContext.getKindOf(fooSource), SourceKind.LIBRARY);
       expect(fooContext.getKindOf(barSource), SourceKind.UNKNOWN);
       expect(barContext.getKindOf(fooSource), SourceKind.UNKNOWN);
       expect(barContext.getKindOf(barSource), SourceKind.LIBRARY);
     });
   }

   void processRequiredPlugins() {
     List<Plugin> plugins = <Plugin>[];
     plugins.addAll(AnalysisEngine.instance.requiredPlugins);
     plugins.add(AnalysisEngine.instance.optionsPlugin);
     plugins.add(server.serverPlugin);

     ExtensionManager manager = new ExtensionManager();
     manager.processPlugins(plugins);
   }

   void setUp() {
     ExtensionManager manager = new ExtensionManager();
     ServerPlugin plugin = new ServerPlugin();
     manager.processPlugins([plugin]);
     channel = new MockServerChannel();
     resourceProvider = new MemoryResourceProvider();
     // Create an SDK in the mock file system.
     new MockSdk(resourceProvider: resourceProvider);
     packageMapProvider = new MockPackageMapProvider();
     server = new AnalysisServer(
         channel,
         resourceProvider,
         packageMapProvider,
         null,
         plugin,
         new AnalysisServerOptions(),
         new DartSdkManager('/', false),
         InstrumentationService.NULL_SERVICE,
         rethrowExceptions: true);
     processRequiredPlugins();
   }

   Future test_contextDisposed() {
     resourceProvider.newFolder('/foo');
     resourceProvider.newFile('/foo/bar.dart', 'library lib;');
     server.setAnalysisRoots('0', ['/foo'], [], {});
     AnalysisContext context;
     return pumpEventQueue()
         .then((_) {
           context = server.getAnalysisContext('/foo/bar.dart');
           server.setAnalysisRoots('1', [], [], {});
         })
         .then((_) => pumpEventQueue())
         .then((_) {
           expect(context.isDisposed, isTrue);
         });
   }

   Future test_contextsChangedEvent() {
     resourceProvider.newFolder('/foo');

     bool wasAdded = false;
     bool wasChanged = false;
     bool wasRemoved = false;
     server.onContextsChanged.listen((ContextsChangedEvent event) {
       wasAdded = event.added.length == 1;
       if (wasAdded) {
         expect(event.added[0], isNotNull);
       }
       wasChanged = event.changed.length == 1;
       if (wasChanged) {
         expect(event.changed[0], isNotNull);
       }
       wasRemoved = event.removed.length == 1;
       if (wasRemoved) {
         expect(event.removed[0], isNotNull);
       }
     });

     server.setAnalysisRoots('0', ['/foo'], [], {});
     return pumpEventQueue().then((_) {
       expect(wasAdded, isTrue);
       expect(wasChanged, isFalse);
       expect(wasRemoved, isFalse);

       wasAdded = false;
       wasChanged = false;
       wasRemoved = false;
       server.setAnalysisRoots('0', ['/foo'], [], {'/foo': '/bar'});
       return pumpEventQueue();
     }).then((_) {
       expect(wasAdded, isFalse);
       expect(wasChanged, isTrue);
       expect(wasRemoved, isFalse);

       wasAdded = false;
       wasChanged = false;
       wasRemoved = false;
       server.setAnalysisRoots('0', [], [], {});
       return pumpEventQueue();
     }).then((_) {
       expect(wasAdded, isFalse);
       expect(wasChanged, isFalse);
       expect(wasRemoved, isTrue);
     });
   }

   Future test_echo() {
     server.handlers = [new EchoHandler()];
     var request = new Request('my22', 'echo');
     return channel.sendRequest(request).then((Response response) {
       expect(response.id, equals('my22'));
       expect(response.error, isNull);
     });
   }

   Future test_getAnalysisContextForSource() {
     // Subscribe to STATUS so we'll know when analysis is done.
     server.serverServices = [ServerService.STATUS].toSet();
     // Analyze project foo containing foo.dart and project bar containing
     // bar.dart.
     resourceProvider.newFolder('/foo');
     resourceProvider.newFolder('/bar');
     File foo = resourceProvider.newFile('/foo/foo.dart', 'library lib;');
     Source fooSource = foo.createSource();
     File bar = resourceProvider.newFile('/bar/bar.dart', 'library lib;');
     Source barSource = bar.createSource();
     server.setAnalysisRoots('0', ['/foo', '/bar'], [], {});
     return server.onAnalysisComplete.then((_) {
       expect(server.statusAnalyzing, isFalse);
       // Make sure getAnalysisContext returns the proper context for each.
       AnalysisContext fooContext =
           server.getAnalysisContextForSource(fooSource);
       expect(fooContext, isNotNull);
       AnalysisContext barContext =
           server.getAnalysisContextForSource(barSource);
       expect(barContext, isNotNull);
       expect(fooContext, isNot(same(barContext)));
       expect(fooContext.getKindOf(fooSource), SourceKind.LIBRARY);
       expect(fooContext.getKindOf(barSource), SourceKind.UNKNOWN);
       expect(barContext.getKindOf(fooSource), SourceKind.UNKNOWN);
       expect(barContext.getKindOf(barSource), SourceKind.LIBRARY);
     });
   }

   test_getContextSourcePair_nested() {
     String dir1Path = '/dir1';
     String dir2Path = dir1Path + '/dir2';
     String filePath = dir2Path + '/file.dart';
     resourceProvider.newFile('$dir1Path/.packages', '');
     resourceProvider.newFile('$dir2Path/.packages', '');
     resourceProvider.newFile(filePath, 'library lib;');
     // create contexts
     server.setAnalysisRoots('0', [dir1Path], [], {});
     // get pair
     ContextSourcePair pair = server.getContextSourcePair(filePath);
     _assertContextOfFolder(pair.context, dir2Path);
     Source source = pair.source;
     expect(source, isNotNull);
     expect(source.uri.scheme, 'file');
     expect(source.fullName, filePath);
   }

   test_getContextSourcePair_nonFile() {
     String dirPath = '/dir';
     Folder dir = resourceProvider.newFolder(dirPath);

     AnalysisContext context = AnalysisEngine.instance.createAnalysisContext();
     _configureSourceFactory(context);
     server.folderMap[dir] = context;

     ContextSourcePair pair = server.getContextSourcePair(dirPath);
     expect(pair, isNotNull);
     expect(pair.context, isNull);
     expect(pair.source, isNull);
   }

   test_getContextSourcePair_simple() {
     String dirPath = '/dir';
     String filePath = dirPath + '/file.dart';
     resourceProvider.newFile(filePath, 'library lib;');
     // create contexts
     server.setAnalysisRoots('0', [dirPath], [], {});
     // get pair
     ContextSourcePair pair = server.getContextSourcePair(filePath);
     _assertContextOfFolder(pair.context, dirPath);
     Source source = pair.source;
     expect(source, isNotNull);
     expect(source.uri.scheme, 'file');
     expect(source.fullName, filePath);
   }

   test_getContextSourcePair_withPackagesFile() {
     String dirPath = '/dir';
     String packagesFilePath = dirPath + '/.packages';
     resourceProvider.newFile(packagesFilePath, 'dir:lib/');
     String filePath = dirPath + '/lib/file.dart';
     resourceProvider.newFile(filePath, 'library lib;');
     // create contexts
     server.setAnalysisRoots('0', [dirPath], [], {});
     // get pair
     ContextSourcePair pair = server.getContextSourcePair(filePath);
     _assertContextOfFolder(pair.context, dirPath);
     Source source = pair.source;
     expect(source, isNotNull);
     expect(source.uri.scheme, 'package');
     expect(source.fullName, filePath);
   }

   /**
    * Test that having multiple analysis contexts analyze the same file doesn't
    * cause that file to receive duplicate notifications when it's modified.
    */
   Future test_no_duplicate_notifications() async {
     // Subscribe to STATUS so we'll know when analysis is done.
     server.serverServices = [ServerService.STATUS].toSet();
     resourceProvider.newFolder('/foo');
     resourceProvider.newFolder('/bar');
     resourceProvider.newFile('/foo/foo.dart', 'import "../bar/bar.dart";');
     File bar = resourceProvider.newFile('/bar/bar.dart', 'library bar;');
     server.setAnalysisRoots('0', ['/foo', '/bar'], [], {});
     Map<AnalysisService, Set<String>> subscriptions =
         <AnalysisService, Set<String>>{};
     for (AnalysisService service in AnalysisService.VALUES) {
       subscriptions[service] = <String>[bar.path].toSet();
     }
     server.setAnalysisSubscriptions(subscriptions);
     await server.onAnalysisComplete;
     expect(server.statusAnalyzing, isFalse);
     channel.notificationsReceived.clear();
     server.updateContent(
         '0', {bar.path: new AddContentOverlay('library bar; void f() {}')});
     await server.onAnalysisComplete;
     expect(server.statusAnalyzing, isFalse);
     expect(channel.notificationsReceived, isNotEmpty);
     Set<String> notificationTypesReceived = new Set<String>();
     for (Notification notification in channel.notificationsReceived) {
       String notificationType = notification.event;
       switch (notificationType) {
         case 'server.status':
         case 'analysis.errors':
           // It's normal for these notifications to be sent multiple times.
           break;
         case 'analysis.outline':
           // It's normal for this notification to be sent twice.
           // TODO(paulberry): why?
           break;
         default:
           if (!notificationTypesReceived.add(notificationType)) {
             fail('Notification type $notificationType received more than once');
           }
           break;
       }
     }
   }

   test_operationsRemovedOnContextDisposal() async {
     resourceProvider.newFolder('/foo');
     resourceProvider.newFile('/foo/baz.dart', 'library lib;');
     resourceProvider.newFolder('/bar');
     resourceProvider.newFile('/bar/baz.dart', 'library lib;');
     server.setAnalysisRoots('0', ['/foo', '/bar'], [], {});
     await pumpEventQueue();
     AnalysisContext contextFoo = server.getAnalysisContext('/foo/baz.dart');
     AnalysisContext contextBar = server.getAnalysisContext('/bar/baz.dart');
     _MockServerOperation operationFoo = new _MockServerOperation(contextFoo);
     _MockServerOperation operationBar = new _MockServerOperation(contextBar);
     server.scheduleOperation(operationFoo);
     server.scheduleOperation(operationBar);
     server.setAnalysisRoots('1', ['/foo'], [], {});
     await pumpEventQueue();
     expect(operationFoo.isComplete, isTrue);
     expect(operationBar.isComplete, isFalse);
   }

   Future test_prioritySourcesChangedEvent() {
     resourceProvider.newFolder('/foo');

     int eventCount = 0;
     Source firstSource = null;
     server.onPriorityChange.listen((PriorityChangeEvent event) {
       ++eventCount;
       firstSource = event.firstSource;
     });

     server.setAnalysisRoots('0', ['/foo'], [], {});
     return pumpEventQueue().then((_) {
       expect(eventCount, 0);

       server.setPriorityFiles('1', ['/foo/bar.dart']);
       return pumpEventQueue();
     }).then((_) {
       expect(eventCount, 1);
       expect(firstSource.fullName, '/foo/bar.dart');

       server.setPriorityFiles('2', ['/foo/b1.dart', '/foo/b2.dart']);
       return pumpEventQueue();
     }).then((_) {
       expect(eventCount, 2);
       expect(firstSource.fullName, '/foo/b1.dart');

       server.setPriorityFiles('17', []);
       return pumpEventQueue();
     }).then((_) {
       expect(eventCount, 3);
       expect(firstSource, isNull);
     });
   }

   void test_rethrowExceptions() {
     Exception exceptionToThrow = new Exception('test exception');
     MockServerOperation operation =
         new MockServerOperation(ServerOperationPriority.ANALYSIS, (_) {
       throw exceptionToThrow;
     });
     server.operationQueue.add(operation);
     server.performOperationPending = true;
     try {
       server.performOperation();
       fail('exception not rethrown');
     } on AnalysisException catch (exception) {
       expect(exception.cause.exception, equals(exceptionToThrow));
     }
   }

   Future test_serverStatusNotifications() {
     MockAnalysisContext context = new MockAnalysisContext('context');
     MockSource source = new MockSource('source');
     when(source.fullName).thenReturn('foo.dart');
     when(source.isInSystemLibrary).thenReturn(false);
     ChangeNoticeImpl notice = new ChangeNoticeImpl(source);
     notice.setErrors([], new LineInfo([0]));
     AnalysisResult firstResult = new AnalysisResult([notice], 0, '', 0);
     AnalysisResult lastResult = new AnalysisResult(null, 1, '', 1);
     when(context.analysisOptions).thenReturn(new AnalysisOptionsImpl());
     when(context.performAnalysisTask)
         .thenReturnList([firstResult, firstResult, firstResult, lastResult]);
     server.serverServices.add(ServerService.STATUS);
     server.schedulePerformAnalysisOperation(context);
     // Pump the event queue to make sure the server has finished any
     // analysis.
     return pumpEventQueue().then((_) {
       List<Notification> notifications = channel.notificationsReceived;
       expect(notifications, isNotEmpty);
       // expect at least one notification indicating analysis is in progress
       expect(notifications.any((Notification notification) {
         if (notification.event == SERVER_STATUS) {
           var params = new ServerStatusParams.fromNotification(notification);
           return params.analysis.isAnalyzing;
         }
         return false;
       }), isTrue);
       // the last notification should indicate that analysis is complete
       Notification notification = notifications[notifications.length - 1];
       var params = new ServerStatusParams.fromNotification(notification);
       expect(params.analysis.isAnalyzing, isFalse);
     });
   }

   test_setAnalysisSubscriptions_fileInIgnoredFolder_newOptions() async {
     String path = '/project/samples/sample.dart';
     resourceProvider.newFile(path, '');
     resourceProvider.newFile(
         '/project/analysis_options.yaml',
         r'''
 analyzer:
   exclude:
     - 'samples/**'
 ''');
     server.setAnalysisRoots('0', ['/project'], [], {});
     server.setAnalysisSubscriptions(<AnalysisService, Set<String>>{
       AnalysisService.NAVIGATION: new Set<String>.from([path])
     });
     // the file is excluded, so no navigation notification
     await server.onAnalysisComplete;
     expect(channel.notificationsReceived.any((notification) {
       return notification.event == ANALYSIS_NAVIGATION;
     }), isFalse);
   }

   test_setAnalysisSubscriptions_fileInIgnoredFolder_oldOptions() async {
     String path = '/project/samples/sample.dart';
     resourceProvider.newFile(path, '');
     resourceProvider.newFile(
         '/project/.analysis_options',
         r'''
 analyzer:
   exclude:
     - 'samples/**'
 ''');
     server.setAnalysisRoots('0', ['/project'], [], {});
     server.setAnalysisSubscriptions(<AnalysisService, Set<String>>{
       AnalysisService.NAVIGATION: new Set<String>.from([path])
     });
     // the file is excluded, so no navigation notification
     await server.onAnalysisComplete;
     expect(channel.notificationsReceived.any((notification) {
       return notification.event == ANALYSIS_NAVIGATION;
     }), isFalse);
   }

   Future test_shutdown() {
     server.handlers = [new ServerDomainHandler(server)];
     var request = new Request('my28', SERVER_SHUTDOWN);
     return channel.sendRequest(request).then((Response response) {
       expect(response.id, equals('my28'));
       expect(response.error, isNull);
     });
   }

   Future test_unknownRequest() {
     server.handlers = [new EchoHandler()];
     var request = new Request('my22', 'randomRequest');
     return channel.sendRequest(request).then((Response response) {
       expect(response.id, equals('my22'));
       expect(response.error, isNotNull);
     });
   }

   void _assertContextOfFolder(
       AnalysisContext context, String expectedFolderPath) {
     Folder expectedFolder = resourceProvider.newFolder(expectedFolderPath);
     ContextInfo expectedContextInfo =
         (server.contextManager as ContextManagerImpl)
             .getContextInfoFor(expectedFolder);
     expect(expectedContextInfo, isNotNull);
     expect(context, same(expectedContextInfo.context));
   }

   void _configureSourceFactory(AnalysisContext context) {
     var resourceUriResolver = new ResourceUriResolver(resourceProvider);
     var packageUriResolver = new PackageMapUriResolver(
         resourceProvider, packageMapProvider.packageMap);
     context.sourceFactory =
         new SourceFactory([packageUriResolver, resourceUriResolver]);
   }
 }

 class EchoHandler implements RequestHandler {
   @override
   Response handleRequest(Request request) {
     if (request.method == 'echo') {
       return new Response(request.id, result: {'echo': true});
     }
     return null;
   }
 }

 /**
  * A [ServerOperation] that does nothing but keep track of whether or not it
  * has been performed.
  */
 class _MockServerOperation implements ServerOperation {
   final AnalysisContext context;
   bool isComplete = false;

   _MockServerOperation(this.context);

   @override
   ServerOperationPriority get priority => ServerOperationPriority.ANALYSIS;

   @override
   void perform(AnalysisServer server) {
     isComplete = true;
   }
 }
	// 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_server;

	import 'dart:async';

	import 'package:analysis_server/plugin/protocol/protocol.dart';
	import 'package:analysis_server/src/analysis_server.dart';
	import 'package:analysis_server/src/constants.dart';
	import 'package:analysis_server/src/context_manager.dart';
	import 'package:analysis_server/src/domain_server.dart';
	import 'package:analysis_server/src/operation/operation.dart';
	import 'package:analysis_server/src/plugin/server_plugin.dart';
	import 'package:analyzer/exception/exception.dart';
	import 'package:analyzer/file_system/file_system.dart';
	import 'package:analyzer/file_system/memory_file_system.dart';
	import 'package:analyzer/instrumentation/instrumentation.dart';
	import 'package:analyzer/source/package_map_resolver.dart';
	import 'package:analyzer/src/generated/engine.dart';
	import 'package:analyzer/src/generated/sdk.dart';
	import 'package:analyzer/src/generated/source.dart';
	import 'package:plugin/manager.dart';
	import 'package:plugin/plugin.dart';
	import 'package:test/test.dart';
	import 'package:test_reflective_loader/test_reflective_loader.dart';
	import 'package:typed_mock/typed_mock.dart';

	import 'mock_sdk.dart';
	import 'mocks.dart';

	main() {
	defineReflectiveSuite(() {
	defineReflectiveTests(AnalysisServerTest);
	});
	}

	@reflectiveTest
	class AnalysisServerTest {
	MockServerChannel channel;
	AnalysisServer server;
	MemoryResourceProvider resourceProvider;
	MockPackageMapProvider packageMapProvider;

	/**
	* Verify that getAnalysisContextForSource returns the correct contexts even
	* for sources that are included by multiple contexts.
	*
	* See dartbug.com/21898
	*/
	Future fail_getAnalysisContextForSource_crossImports() {
	// Subscribe to STATUS so we'll know when analysis is done.
	server.serverServices = [ServerService.STATUS].toSet();
	// Analyze project foo containing foo.dart and project bar containing
	// bar.dart.
	resourceProvider.newFolder('/foo');
	resourceProvider.newFolder('/bar');
	File foo = resourceProvider.newFile(
	'/foo/foo.dart',
	'''
	libary foo;
	import "../bar/bar.dart";
	''');
	Source fooSource = foo.createSource();
	File bar = resourceProvider.newFile(
	'/bar/bar.dart',
	'''
	library bar;
	import "../foo/foo.dart";
	''');
	Source barSource = bar.createSource();
	server.setAnalysisRoots('0', ['/foo', '/bar'], [], {});
	return server.onAnalysisComplete.then((_) {
	expect(server.statusAnalyzing, isFalse);
	// Make sure getAnalysisContext returns the proper context for each.
	AnalysisContext fooContext =
	server.getAnalysisContextForSource(fooSource);
	expect(fooContext, isNotNull);
	AnalysisContext barContext =
	server.getAnalysisContextForSource(barSource);
	expect(barContext, isNotNull);
	expect(fooContext, isNot(same(barContext)));
	expect(fooContext.getKindOf(fooSource), SourceKind.LIBRARY);
	expect(fooContext.getKindOf(barSource), SourceKind.UNKNOWN);
	expect(barContext.getKindOf(fooSource), SourceKind.UNKNOWN);
	expect(barContext.getKindOf(barSource), SourceKind.LIBRARY);
	});
	}

	/**
	* Verify that getAnalysisContextForSource returns the correct contexts even
	* for sources that haven't been analyzed yet.
	*
	* See dartbug.com/21898
	*/
	Future fail_getAnalysisContextForSource_unanalyzed() {
	// Subscribe to STATUS so we'll know when analysis is done.
	server.serverServices = [ServerService.STATUS].toSet();
	// Analyze project foo containing foo.dart and project bar containing
	// bar.dart.
	resourceProvider.newFolder('/foo');
	resourceProvider.newFolder('/bar');
	File foo = resourceProvider.newFile('/foo/foo.dart', 'library lib;');
	Source fooSource = foo.createSource();
	File bar = resourceProvider.newFile('/bar/bar.dart', 'library lib;');
	Source barSource = bar.createSource();
	server.setAnalysisRoots('0', ['/foo', '/bar'], [], {});
	AnalysisContext fooContext = server.getAnalysisContextForSource(fooSource);
	expect(fooContext, isNotNull);
	AnalysisContext barContext = server.getAnalysisContextForSource(barSource);
	expect(barContext, isNotNull);
	expect(fooContext, isNot(same(barContext)));
	return server.onAnalysisComplete.then((_) {
	expect(server.statusAnalyzing, isFalse);
	// Make sure getAnalysisContext returned the proper context for each.
	expect(fooContext.getKindOf(fooSource), SourceKind.LIBRARY);
	expect(fooContext.getKindOf(barSource), SourceKind.UNKNOWN);
	expect(barContext.getKindOf(fooSource), SourceKind.UNKNOWN);
	expect(barContext.getKindOf(barSource), SourceKind.LIBRARY);
	});
	}

	void processRequiredPlugins() {
	List<Plugin> plugins = <Plugin>[];
	plugins.addAll(AnalysisEngine.instance.requiredPlugins);
	plugins.add(AnalysisEngine.instance.optionsPlugin);
	plugins.add(server.serverPlugin);

	ExtensionManager manager = new ExtensionManager();
	manager.processPlugins(plugins);
	}

	void setUp() {
	ExtensionManager manager = new ExtensionManager();
	ServerPlugin plugin = new ServerPlugin();
	manager.processPlugins([plugin]);
	channel = new MockServerChannel();
	resourceProvider = new MemoryResourceProvider();
	// Create an SDK in the mock file system.
	new MockSdk(resourceProvider: resourceProvider);
	packageMapProvider = new MockPackageMapProvider();
	server = new AnalysisServer(
	channel,
	resourceProvider,
	packageMapProvider,
	null,
	plugin,
	new AnalysisServerOptions(),
	new DartSdkManager('/', false),
	InstrumentationService.NULL_SERVICE,
	rethrowExceptions: true);
	processRequiredPlugins();
	}

	Future test_contextDisposed() {
	resourceProvider.newFolder('/foo');
	resourceProvider.newFile('/foo/bar.dart', 'library lib;');
	server.setAnalysisRoots('0', ['/foo'], [], {});
	AnalysisContext context;
	return pumpEventQueue()
	.then((_) {
	context = server.getAnalysisContext('/foo/bar.dart');
	server.setAnalysisRoots('1', [], [], {});
	})
	.then((_) => pumpEventQueue())
	.then((_) {
	expect(context.isDisposed, isTrue);
	});
	}

	Future test_contextsChangedEvent() {
	resourceProvider.newFolder('/foo');

	bool wasAdded = false;
	bool wasChanged = false;
	bool wasRemoved = false;
	server.onContextsChanged.listen((ContextsChangedEvent event) {
	wasAdded = event.added.length == 1;
	if (wasAdded) {
	expect(event.added[0], isNotNull);
	}
	wasChanged = event.changed.length == 1;
	if (wasChanged) {
	expect(event.changed[0], isNotNull);
	}
	wasRemoved = event.removed.length == 1;
	if (wasRemoved) {
	expect(event.removed[0], isNotNull);
	}
	});

	server.setAnalysisRoots('0', ['/foo'], [], {});
	return pumpEventQueue().then((_) {
	expect(wasAdded, isTrue);
	expect(wasChanged, isFalse);
	expect(wasRemoved, isFalse);

	wasAdded = false;
	wasChanged = false;
	wasRemoved = false;
	server.setAnalysisRoots('0', ['/foo'], [], {'/foo': '/bar'});
	return pumpEventQueue();
	}).then((_) {
	expect(wasAdded, isFalse);
	expect(wasChanged, isTrue);
	expect(wasRemoved, isFalse);

	wasAdded = false;
	wasChanged = false;
	wasRemoved = false;
	server.setAnalysisRoots('0', [], [], {});
	return pumpEventQueue();
	}).then((_) {
	expect(wasAdded, isFalse);
	expect(wasChanged, isFalse);
	expect(wasRemoved, isTrue);
	});
	}

	Future test_echo() {
	server.handlers = [new EchoHandler()];
	var request = new Request('my22', 'echo');
	return channel.sendRequest(request).then((Response response) {
	expect(response.id, equals('my22'));
	expect(response.error, isNull);
	});
	}

	Future test_getAnalysisContextForSource() {
	// Subscribe to STATUS so we'll know when analysis is done.
	server.serverServices = [ServerService.STATUS].toSet();
	// Analyze project foo containing foo.dart and project bar containing
	// bar.dart.
	resourceProvider.newFolder('/foo');
	resourceProvider.newFolder('/bar');
	File foo = resourceProvider.newFile('/foo/foo.dart', 'library lib;');
	Source fooSource = foo.createSource();
	File bar = resourceProvider.newFile('/bar/bar.dart', 'library lib;');
	Source barSource = bar.createSource();
	server.setAnalysisRoots('0', ['/foo', '/bar'], [], {});
	return server.onAnalysisComplete.then((_) {
	expect(server.statusAnalyzing, isFalse);
	// Make sure getAnalysisContext returns the proper context for each.
	AnalysisContext fooContext =
	server.getAnalysisContextForSource(fooSource);
	expect(fooContext, isNotNull);
	AnalysisContext barContext =
	server.getAnalysisContextForSource(barSource);
	expect(barContext, isNotNull);
	expect(fooContext, isNot(same(barContext)));
	expect(fooContext.getKindOf(fooSource), SourceKind.LIBRARY);
	expect(fooContext.getKindOf(barSource), SourceKind.UNKNOWN);
	expect(barContext.getKindOf(fooSource), SourceKind.UNKNOWN);
	expect(barContext.getKindOf(barSource), SourceKind.LIBRARY);
	});
	}

	test_getContextSourcePair_nested() {
	String dir1Path = '/dir1';
	String dir2Path = dir1Path + '/dir2';
	String filePath = dir2Path + '/file.dart';
	resourceProvider.newFile('$dir1Path/.packages', '');
	resourceProvider.newFile('$dir2Path/.packages', '');
	resourceProvider.newFile(filePath, 'library lib;');
	// create contexts
	server.setAnalysisRoots('0', [dir1Path], [], {});
	// get pair
	ContextSourcePair pair = server.getContextSourcePair(filePath);
	_assertContextOfFolder(pair.context, dir2Path);
	Source source = pair.source;
	expect(source, isNotNull);
	expect(source.uri.scheme, 'file');
	expect(source.fullName, filePath);
	}

	test_getContextSourcePair_nonFile() {
	String dirPath = '/dir';
	Folder dir = resourceProvider.newFolder(dirPath);

	AnalysisContext context = AnalysisEngine.instance.createAnalysisContext();
	_configureSourceFactory(context);
	server.folderMap[dir] = context;

	ContextSourcePair pair = server.getContextSourcePair(dirPath);
	expect(pair, isNotNull);
	expect(pair.context, isNull);
	expect(pair.source, isNull);
	}

	test_getContextSourcePair_simple() {
	String dirPath = '/dir';
	String filePath = dirPath + '/file.dart';
	resourceProvider.newFile(filePath, 'library lib;');
	// create contexts
	server.setAnalysisRoots('0', [dirPath], [], {});
	// get pair
	ContextSourcePair pair = server.getContextSourcePair(filePath);
	_assertContextOfFolder(pair.context, dirPath);
	Source source = pair.source;
	expect(source, isNotNull);
	expect(source.uri.scheme, 'file');
	expect(source.fullName, filePath);
	}

	test_getContextSourcePair_withPackagesFile() {
	String dirPath = '/dir';
	String packagesFilePath = dirPath + '/.packages';
	resourceProvider.newFile(packagesFilePath, 'dir:lib/');
	String filePath = dirPath + '/lib/file.dart';
	resourceProvider.newFile(filePath, 'library lib;');
	// create contexts
	server.setAnalysisRoots('0', [dirPath], [], {});
	// get pair
	ContextSourcePair pair = server.getContextSourcePair(filePath);
	_assertContextOfFolder(pair.context, dirPath);
	Source source = pair.source;
	expect(source, isNotNull);
	expect(source.uri.scheme, 'package');
	expect(source.fullName, filePath);
	}

	/**
	* Test that having multiple analysis contexts analyze the same file doesn't
	* cause that file to receive duplicate notifications when it's modified.
	*/
	Future test_no_duplicate_notifications() async {
	// Subscribe to STATUS so we'll know when analysis is done.
	server.serverServices = [ServerService.STATUS].toSet();
	resourceProvider.newFolder('/foo');
	resourceProvider.newFolder('/bar');
	resourceProvider.newFile('/foo/foo.dart', 'import "../bar/bar.dart";');
	File bar = resourceProvider.newFile('/bar/bar.dart', 'library bar;');
	server.setAnalysisRoots('0', ['/foo', '/bar'], [], {});
	Map<AnalysisService, Set<String>> subscriptions =
	<AnalysisService, Set<String>>{};
	for (AnalysisService service in AnalysisService.VALUES) {
	subscriptions[service] = <String>[bar.path].toSet();
	}
	server.setAnalysisSubscriptions(subscriptions);
	await server.onAnalysisComplete;
	expect(server.statusAnalyzing, isFalse);
	channel.notificationsReceived.clear();
	server.updateContent(
	'0', {bar.path: new AddContentOverlay('library bar; void f() {}')});
	await server.onAnalysisComplete;
	expect(server.statusAnalyzing, isFalse);
	expect(channel.notificationsReceived, isNotEmpty);
	Set<String> notificationTypesReceived = new Set<String>();
	for (Notification notification in channel.notificationsReceived) {
	String notificationType = notification.event;
	switch (notificationType) {
	case 'server.status':
	case 'analysis.errors':
	// It's normal for these notifications to be sent multiple times.
	break;
	case 'analysis.outline':
	// It's normal for this notification to be sent twice.
	// TODO(paulberry): why?
	break;
	default:
	if (!notificationTypesReceived.add(notificationType)) {
	fail('Notification type $notificationType received more than once');
	}
	break;
	}
	}
	}

	test_operationsRemovedOnContextDisposal() async {
	resourceProvider.newFolder('/foo');
	resourceProvider.newFile('/foo/baz.dart', 'library lib;');
	resourceProvider.newFolder('/bar');
	resourceProvider.newFile('/bar/baz.dart', 'library lib;');
	server.setAnalysisRoots('0', ['/foo', '/bar'], [], {});
	await pumpEventQueue();
	AnalysisContext contextFoo = server.getAnalysisContext('/foo/baz.dart');
	AnalysisContext contextBar = server.getAnalysisContext('/bar/baz.dart');
	_MockServerOperation operationFoo = new _MockServerOperation(contextFoo);
	_MockServerOperation operationBar = new _MockServerOperation(contextBar);
	server.scheduleOperation(operationFoo);
	server.scheduleOperation(operationBar);
	server.setAnalysisRoots('1', ['/foo'], [], {});
	await pumpEventQueue();
	expect(operationFoo.isComplete, isTrue);
	expect(operationBar.isComplete, isFalse);
	}

	Future test_prioritySourcesChangedEvent() {
	resourceProvider.newFolder('/foo');

	int eventCount = 0;
	Source firstSource = null;
	server.onPriorityChange.listen((PriorityChangeEvent event) {
	++eventCount;
	firstSource = event.firstSource;
	});

	server.setAnalysisRoots('0', ['/foo'], [], {});
	return pumpEventQueue().then((_) {
	expect(eventCount, 0);

	server.setPriorityFiles('1', ['/foo/bar.dart']);
	return pumpEventQueue();
	}).then((_) {
	expect(eventCount, 1);
	expect(firstSource.fullName, '/foo/bar.dart');

	server.setPriorityFiles('2', ['/foo/b1.dart', '/foo/b2.dart']);
	return pumpEventQueue();
	}).then((_) {
	expect(eventCount, 2);
	expect(firstSource.fullName, '/foo/b1.dart');

	server.setPriorityFiles('17', []);
	return pumpEventQueue();
	}).then((_) {
	expect(eventCount, 3);
	expect(firstSource, isNull);
	});
	}

	void test_rethrowExceptions() {
	Exception exceptionToThrow = new Exception('test exception');
	MockServerOperation operation =
	new MockServerOperation(ServerOperationPriority.ANALYSIS, (_) {
	throw exceptionToThrow;
	});
	server.operationQueue.add(operation);
	server.performOperationPending = true;
	try {
	server.performOperation();
	fail('exception not rethrown');
	} on AnalysisException catch (exception) {
	expect(exception.cause.exception, equals(exceptionToThrow));
	}
	}

	Future test_serverStatusNotifications() {
	MockAnalysisContext context = new MockAnalysisContext('context');
	MockSource source = new MockSource('source');
	when(source.fullName).thenReturn('foo.dart');
	when(source.isInSystemLibrary).thenReturn(false);
	ChangeNoticeImpl notice = new ChangeNoticeImpl(source);
	notice.setErrors([], new LineInfo([0]));
	AnalysisResult firstResult = new AnalysisResult([notice], 0, '', 0);
	AnalysisResult lastResult = new AnalysisResult(null, 1, '', 1);
	when(context.analysisOptions).thenReturn(new AnalysisOptionsImpl());
	when(context.performAnalysisTask)
	.thenReturnList([firstResult, firstResult, firstResult, lastResult]);
	server.serverServices.add(ServerService.STATUS);
	server.schedulePerformAnalysisOperation(context);
	// Pump the event queue to make sure the server has finished any
	// analysis.
	return pumpEventQueue().then((_) {
	List<Notification> notifications = channel.notificationsReceived;
	expect(notifications, isNotEmpty);
	// expect at least one notification indicating analysis is in progress
	expect(notifications.any((Notification notification) {
	if (notification.event == SERVER_STATUS) {
	var params = new ServerStatusParams.fromNotification(notification);
	return params.analysis.isAnalyzing;
	}
	return false;
	}), isTrue);
	// the last notification should indicate that analysis is complete
	Notification notification = notifications[notifications.length - 1];
	var params = new ServerStatusParams.fromNotification(notification);
	expect(params.analysis.isAnalyzing, isFalse);
	});
	}

	test_setAnalysisSubscriptions_fileInIgnoredFolder_newOptions() async {
	String path = '/project/samples/sample.dart';
	resourceProvider.newFile(path, '');
	resourceProvider.newFile(
	'/project/analysis_options.yaml',
	r'''
	analyzer:
	exclude:
	- 'samples/**'
	''');
	server.setAnalysisRoots('0', ['/project'], [], {});
	server.setAnalysisSubscriptions(<AnalysisService, Set<String>>{
	AnalysisService.NAVIGATION: new Set<String>.from([path])
	});
	// the file is excluded, so no navigation notification
	await server.onAnalysisComplete;
	expect(channel.notificationsReceived.any((notification) {
	return notification.event == ANALYSIS_NAVIGATION;
	}), isFalse);
	}

	test_setAnalysisSubscriptions_fileInIgnoredFolder_oldOptions() async {
	String path = '/project/samples/sample.dart';
	resourceProvider.newFile(path, '');
	resourceProvider.newFile(
	'/project/.analysis_options',
	r'''
	analyzer:
	exclude:
	- 'samples/**'
	''');
	server.setAnalysisRoots('0', ['/project'], [], {});
	server.setAnalysisSubscriptions(<AnalysisService, Set<String>>{
	AnalysisService.NAVIGATION: new Set<String>.from([path])
	});
	// the file is excluded, so no navigation notification
	await server.onAnalysisComplete;
	expect(channel.notificationsReceived.any((notification) {
	return notification.event == ANALYSIS_NAVIGATION;
	}), isFalse);
	}

	Future test_shutdown() {
	server.handlers = [new ServerDomainHandler(server)];
	var request = new Request('my28', SERVER_SHUTDOWN);
	return channel.sendRequest(request).then((Response response) {
	expect(response.id, equals('my28'));
	expect(response.error, isNull);
	});
	}

	Future test_unknownRequest() {
	server.handlers = [new EchoHandler()];
	var request = new Request('my22', 'randomRequest');
	return channel.sendRequest(request).then((Response response) {
	expect(response.id, equals('my22'));
	expect(response.error, isNotNull);
	});
	}

	void _assertContextOfFolder(
	AnalysisContext context, String expectedFolderPath) {
	Folder expectedFolder = resourceProvider.newFolder(expectedFolderPath);
	ContextInfo expectedContextInfo =
	(server.contextManager as ContextManagerImpl)
	.getContextInfoFor(expectedFolder);
	expect(expectedContextInfo, isNotNull);
	expect(context, same(expectedContextInfo.context));
	}

	void _configureSourceFactory(AnalysisContext context) {
	var resourceUriResolver = new ResourceUriResolver(resourceProvider);
	var packageUriResolver = new PackageMapUriResolver(
	resourceProvider, packageMapProvider.packageMap);
	context.sourceFactory =
	new SourceFactory([packageUriResolver, resourceUriResolver]);
	}
	}

	class EchoHandler implements RequestHandler {
	@override
	Response handleRequest(Request request) {
	if (request.method == 'echo') {
	return new Response(request.id, result: {'echo': true});
	}
	return null;
	}
	}

	/**
	* A [ServerOperation] that does nothing but keep track of whether or not it
	* has been performed.
	*/
	class _MockServerOperation implements ServerOperation {
	final AnalysisContext context;
	bool isComplete = false;

	_MockServerOperation(this.context);

	@override
	ServerOperationPriority get priority => ServerOperationPriority.ANALYSIS;

	@override
	void perform(AnalysisServer server) {
	isComplete = true;
	}
	}