[flutter_tools] replace MockFlutterVersion usage with fake where possible,...

[flutter_tools] replace MockFlutterVersion usage with fake where possible, move from context (#77390)

packages/flutter_tools/lib/src/doctor.dart

@@ -720,7 +720,7 @@ class FlutterValidator extends DoctorValidator {
       messages.add(ValidationMessage(_userMessages.flutterRevision(
         version.frameworkRevisionShort,
         version.frameworkAge,
-        version.frameworkDate,
+        version.frameworkCommitDate,
       )));
       messages.add(ValidationMessage(_userMessages.engineRevision(version.engineRevisionShort)));
       messages.add(ValidationMessage(_userMessages.dartRevision(version.dartSdkVersion)));

packages/flutter_tools/lib/src/version.dart

@@ -144,8 +144,6 @@ class FlutterVersion {
   String _frameworkVersion;
   String get frameworkVersion => _frameworkVersion;
 
-  String get frameworkDate => frameworkCommitDate;
-
   String get dartSdkVersion => globals.cache.dartSdkVersion;
 
   String get engineRevision => globals.cache.engineRevision;
@@ -181,6 +179,8 @@ class FlutterVersion {
     'dartSdkVersion': dartSdkVersion,
   };
 
+  String get frameworkDate => frameworkCommitDate;
+
   /// A date String describing the last framework commit.
   ///
   /// If a git command fails, this will return a placeholder date.

packages/flutter_tools/test/commands.shard/hermetic/doctor_test.dart

@@ -53,12 +53,12 @@ final Platform macPlatform = FakePlatform(
 );
 
 void main() {
-  MockFlutterVersion mockFlutterVersion;
+  FakeFlutterVersion flutterVersion;
   BufferLogger logger;
   FakeProcessManager fakeProcessManager;
 
   setUp(() {
-    mockFlutterVersion = MockFlutterVersion();
+    flutterVersion = FakeFlutterVersion();
     logger = BufferLogger.test();
     fakeProcessManager = FakeProcessManager.list(<FakeCommand>[]);
   });
@@ -667,13 +667,12 @@ void main() {
 
     await commandRunner.run(<String>['doctor']);
 
-    verify(mockFlutterVersion.fetchTagsAndUpdate()).called(1);
-
+    expect(flutterVersion.didFetchTagsAndUpdate, true);
     Cache.enableLocking();
   }, overrides: <Type, Generator>{
     ProcessManager: () => FakeProcessManager.any(),
     FileSystem: () => MemoryFileSystem.test(),
-    FlutterVersion: () => mockFlutterVersion,
+    FlutterVersion: () => flutterVersion,
     Doctor: () => NoOpDoctor(),
   }, initializeFlutterRoot: false);
 

packages/flutter_tools/test/commands.shard/hermetic/downgrade_test.dart

@@ -17,6 +17,7 @@ import 'package:mockito/mockito.dart';
 
 import '../../src/common.dart';
 import '../../src/context.dart';
+import '../../src/mocks.dart';
 
 void main() {
   FileSystem fileSystem;

packages/flutter_tools/test/commands.shard/permeable/upgrade_test.dart

@@ -20,6 +20,7 @@ import 'package:process/process.dart';
 import '../../src/common.dart';
 import '../../src/context.dart';
 import '../../src/fake_process_manager.dart';
+import '../../src/mocks.dart';
 
 void main() {
   group('UpgradeCommandRunner', () {

packages/flutter_tools/test/general.shard/drive/drive_service_test.dart

@@ -14,6 +14,7 @@ import 'package:flutter_tools/src/build_info.dart';
 import 'package:flutter_tools/src/convert.dart';
 import 'package:flutter_tools/src/device.dart';
 import 'package:flutter_tools/src/drive/drive_service.dart';
+import 'package:flutter_tools/src/version.dart';
 import 'package:flutter_tools/src/vmservice.dart';
 import 'package:package_config/package_config_types.dart';
 import 'package:test/fake.dart';
@@ -21,6 +22,7 @@ import 'package:vm_service/vm_service.dart' as vm_service;
 
 import '../../src/common.dart';
 import '../../src/context.dart';
+import '../../src/fakes.dart';
 
 
 final vm_service.Isolate fakeUnpausedIsolate = vm_service.Isolate(
@@ -288,9 +290,13 @@ void main() {
     expect(json.decode(fileSystem.file('out.json').readAsStringSync()), <String, Object>{
       'platform': 'android',
       'name': 'test',
-      'engineRevision': null,
+      'engineRevision': 'abcdefghijklmnopqrstuvwxyz',
       'data': <String, Object>{'A': 'B'}
     });
+  }, overrides: <Type, Generator>{
+    FlutterVersion: () => FakeFlutterVersion(
+      engineRevision: 'abcdefghijklmnopqrstuvwxyz',
+    )
   });
 
   testWithoutContext('Can connect to existing application and stop it during cleanup', () async {

packages/flutter_tools/test/general.shard/flutter_validator_test.dart

@@ -15,11 +15,14 @@ import 'package:mockito/mockito.dart';
 
 import '../src/common.dart';
 import '../src/context.dart';
+import '../src/fakes.dart';
 
 void main() {
   testWithoutContext('FlutterValidator shows an error message if gen_snapshot is '
     'downloaded and exits with code 1', () async {
-    final MockFlutterVersion flutterVersion = MockFlutterVersion();
+    final FakeFlutterVersion flutterVersion = FakeFlutterVersion(
+      frameworkVersion: '1.0.0',
+    );
     final MemoryFileSystem fileSystem = MemoryFileSystem.test();
     final Artifacts artifacts = Artifacts.test();
     final FlutterValidator flutterValidator = FlutterValidator(
@@ -46,7 +49,7 @@ void main() {
 
     expect(await flutterValidator.validate(), matchDoctorValidation(
       validationType: ValidationType.partial,
-      statusInfo: 'Channel unknown, Unknown, on Linux, locale en_US.UTF-8',
+      statusInfo: 'Channel unknown, 1.0.0, on Linux, locale en_US.UTF-8',
       messages: containsAll(const <ValidationMessage>[
         ValidationMessage.error(
           'Downloaded executables cannot execute on host.\n'
@@ -60,13 +63,16 @@ void main() {
   });
 
   testWithoutContext('FlutterValidator does not run gen_snapshot binary check if it is not already downloaded', () async {
+    final FakeFlutterVersion flutterVersion = FakeFlutterVersion(
+      frameworkVersion: '1.0.0',
+    );
     final FlutterValidator flutterValidator = FlutterValidator(
       platform: FakePlatform(
         operatingSystem: 'windows',
         localeName: 'en_US.UTF-8',
         environment: <String, String>{},
       ),
-      flutterVersion: () => MockFlutterVersion(),
+      flutterVersion: () => flutterVersion,
       userMessages: UserMessages(),
       artifacts: Artifacts.test(),
       fileSystem: MemoryFileSystem.test(),
@@ -79,16 +85,15 @@ void main() {
     // fail if the gen_snapshot binary is not present.
     expect(await flutterValidator.validate(), matchDoctorValidation(
       validationType: ValidationType.installed,
-      statusInfo: 'Channel unknown, Unknown, on Windows, locale en_US.UTF-8',
+      statusInfo: 'Channel unknown, 1.0.0, on Windows, locale en_US.UTF-8',
       messages: anything,
     ));
   });
 
   testWithoutContext('FlutterValidator handles exception thrown by version checking', () async {
-    final MockFlutterVersion flutterVersion = MockFlutterVersion();
     final FlutterValidator flutterValidator = FlutterValidator(
       platform: FakePlatform(operatingSystem: 'windows', localeName: 'en_US.UTF-8'),
-      flutterVersion: () => flutterVersion,
+      flutterVersion: () => FakeThrowingFlutterVersion(),
       userMessages: UserMessages(),
       artifacts: Artifacts.test(),
       fileSystem: MemoryFileSystem.test(),
@@ -97,10 +102,6 @@ void main() {
       flutterRoot: () => 'sdk/flutter',
     );
 
-    when(flutterVersion.channel).thenReturn('unknown');
-    when(flutterVersion.frameworkVersion).thenReturn('0.0.0');
-    when(flutterVersion.frameworkDate).thenThrow(VersionCheckError('version error'));
-
     expect(await flutterValidator.validate(), matchDoctorValidation(
       validationType: ValidationType.partial,
       statusInfo: 'Channel unknown, 0.0.0, on Windows, locale en_US.UTF-8',
@@ -112,6 +113,9 @@ void main() {
   });
 
   testWithoutContext('FlutterValidator shows mirrors on pub and flutter cloud storage', () async {
+    final FakeFlutterVersion flutterVersion = FakeFlutterVersion(
+      frameworkVersion: '1.0.0',
+    );
     final Platform platform = FakePlatform(
       operatingSystem: 'windows',
       localeName: 'en_US.UTF-8',
@@ -120,7 +124,6 @@ void main() {
         'FLUTTER_STORAGE_BASE_URL': 'https://example.com/flutter',
       },
     );
-    final MockFlutterVersion flutterVersion = MockFlutterVersion();
     final MemoryFileSystem fileSystem = MemoryFileSystem.test();
     final Artifacts artifacts = Artifacts.test();
     final FlutterValidator flutterValidator = FlutterValidator(
@@ -136,7 +139,7 @@ void main() {
 
     expect(await flutterValidator.validate(), matchDoctorValidation(
       validationType: ValidationType.installed,
-      statusInfo: 'Channel unknown, Unknown, on Windows, locale en_US.UTF-8',
+      statusInfo: 'Channel unknown, 1.0.0, on Windows, locale en_US.UTF-8',
       messages: containsAll(const <ValidationMessage>[
         ValidationMessage('Pub download mirror https://example.com/pub'),
         ValidationMessage('Flutter download mirror https://example.com/flutter'),
@@ -145,10 +148,16 @@ void main() {
   });
 }
 
-class MockFlutterVersion extends Mock implements FlutterVersion {}
 class FakeOperatingSystemUtils extends Fake implements OperatingSystemUtils {
   FakeOperatingSystemUtils({this.name});
 
   @override
   final String name;
 }
+
+class FakeThrowingFlutterVersion extends FakeFlutterVersion {
+  @override
+   String get frameworkCommitDate {
+     throw VersionCheckError('version error');
+   }
+}

packages/flutter_tools/test/general.shard/plugins_test.dart

@@ -44,7 +44,7 @@ void main() {
     MockWindowsProject windowsProject;
     MockLinuxProject linuxProject;
     FakeSystemClock systemClock;
-    FlutterVersion mockVersion;
+    FlutterVersion flutterVersion;
     // A Windows-style filesystem. This is not populated by default, so tests
     // using it instead of fs must re-run any necessary setup (e.g.,
     // setUpProject).
@@ -126,15 +126,11 @@ void main() {
       fsWindows = MemoryFileSystem(style: FileSystemStyle.windows);
       systemClock = FakeSystemClock()
         ..currentTime = DateTime(1970, 1, 1);
-      mockVersion = MockFlutterVersion();
+      flutterVersion = FakeFlutterVersion(frameworkVersion: '1.0.0');
 
       // Add basic properties to the Flutter project and subprojects
       setUpProject(fs);
       flutterProject.directory.childFile('.packages').createSync(recursive: true);
-
-      when(mockVersion.frameworkVersion).thenAnswer(
-        (Invocation _) => '1.0.0'
-      );
     });
 
     // Makes fake plugin packages for each plugin, adds them to flutterProject,
@@ -436,10 +432,6 @@ dependencies:
 
         final DateTime dateCreated = DateTime(1970, 1, 1);
         systemClock.currentTime = dateCreated;
-        const String version = '1.0.0';
-        when(mockVersion.frameworkVersion).thenAnswer(
-          (Invocation _) => version
-        );
 
         await refreshPluginsList(flutterProject);
 
@@ -510,7 +502,7 @@ dependencies:
 
         expect(jsonContent['dependencyGraph'], expectedDependencyGraph);
         expect(jsonContent['date_created'], dateCreated.toString());
-        expect(jsonContent['version'], version);
+        expect(jsonContent['version'], '1.0.0');
 
         // Make sure tests are updated if a new object is added/removed.
         final List<String> expectedKeys = <String>[
@@ -525,7 +517,7 @@ dependencies:
         FileSystem: () => fs,
         ProcessManager: () => FakeProcessManager.any(),
         SystemClock: () => systemClock,
-        FlutterVersion: () => mockVersion
+        FlutterVersion: () => flutterVersion
       });
 
       testUsingContext('Changes to the plugin list invalidates the Cocoapod lockfiles', () async {
@@ -542,7 +534,7 @@ dependencies:
         FileSystem: () => fs,
         ProcessManager: () => FakeProcessManager.any(),
         SystemClock: () => systemClock,
-        FlutterVersion: () => mockVersion
+        FlutterVersion: () => flutterVersion
       });
 
       testUsingContext('No changes to the plugin list does not invalidate the Cocoapod lockfiles', () async {
@@ -565,7 +557,7 @@ dependencies:
         FileSystem: () => fs,
         ProcessManager: () => FakeProcessManager.any(),
         SystemClock: () => systemClock,
-        FlutterVersion: () => mockVersion
+        FlutterVersion: () => flutterVersion
       });
     });
 

packages/flutter_tools/test/general.shard/resident_runner_test.dart

@@ -11,6 +11,7 @@ import 'package:flutter_tools/src/base/dds.dart';
 import 'package:flutter_tools/src/base/platform.dart';
 import 'package:flutter_tools/src/features.dart';
 import 'package:flutter_tools/src/resident_devtools_handler.dart';
+import 'package:flutter_tools/src/version.dart';
 import 'package:meta/meta.dart';
 import 'package:package_config/package_config.dart';
 import 'package:vm_service/vm_service.dart' as vm_service;
@@ -1585,7 +1586,7 @@ void main() {
     expect(json.decode(globals.fs.file('flutter_01.sksl.json').readAsStringSync()), <String, Object>{
       'platform': 'android',
       'name': 'FakeDevice',
-      'engineRevision': '42.2', // From FakeFlutterVersion
+      'engineRevision': 'abcdefg',
       'data': <String, Object>{'A': 'B'}
     });
     expect(fakeVmServiceHost.hasRemainingExpectations, false);
@@ -1593,7 +1594,8 @@ void main() {
     FileSystemUtils: () => FileSystemUtils(
       fileSystem: globals.fs,
       platform: globals.platform,
-    )
+    ),
+    FlutterVersion: () => FakeFlutterVersion(engineRevision: 'abcdefg')
   }));
 
   testUsingContext('ResidentRunner ignores DevToolsLauncher when attaching with enableDevTools: false', () => testbed.run(() async {

packages/flutter_tools/test/general.shard/runner/flutter_command_runner_test.dart

@@ -14,10 +14,10 @@ import 'package:flutter_tools/src/globals.dart' as globals;
 import 'package:flutter_tools/src/runner/flutter_command.dart';
 import 'package:flutter_tools/src/runner/flutter_command_runner.dart';
 import 'package:flutter_tools/src/version.dart';
-import 'package:mockito/mockito.dart';
 
 import '../../src/common.dart';
 import '../../src/context.dart';
+import '../../src/fakes.dart';
 import 'utils.dart';
 
 const String _kFlutterRoot = '/flutter/flutter';
@@ -25,20 +25,19 @@ const String _kProjectRoot = '/project';
 
 void main() {
   group('FlutterCommandRunner', () {
-    MemoryFileSystem fs;
+    MemoryFileSystem fileSystem;
     Platform platform;
     FlutterCommandRunner runner;
-    ProcessManager processManager;
 
     setUpAll(() {
       Cache.disableLocking();
     });
 
     setUp(() {
-      fs = MemoryFileSystem.test();
-      fs.directory(_kFlutterRoot).createSync(recursive: true);
-      fs.directory(_kProjectRoot).createSync(recursive: true);
-      fs.currentDirectory = _kProjectRoot;
+      fileSystem = MemoryFileSystem.test();
+      fileSystem.directory(_kFlutterRoot).createSync(recursive: true);
+      fileSystem.directory(_kProjectRoot).createSync(recursive: true);
+      fileSystem.currentDirectory = _kProjectRoot;
 
       platform = FakePlatform(
         environment: <String, String>{
@@ -48,100 +47,60 @@ void main() {
       );
 
       runner = createTestCommandRunner(DummyFlutterCommand()) as FlutterCommandRunner;
-      processManager = MockProcessManager();
     });
 
     group('run', () {
       testUsingContext('checks that Flutter installation is up-to-date', () async {
-        final MockFlutterVersion version = globals.flutterVersion as MockFlutterVersion;
-        bool versionChecked = false;
-        when(version.checkFlutterVersionFreshness()).thenAnswer((_) async {
-          versionChecked = true;
-        });
+        final FakeFlutterVersion version = globals.flutterVersion as FakeFlutterVersion;
 
         await runner.run(<String>['dummy']);
 
-        expect(versionChecked, isTrue);
+        expect(version.didCheckFlutterVersionFreshness, true);
       }, overrides: <Type, Generator>{
-        FileSystem: () => fs,
+        FileSystem: () => fileSystem,
         ProcessManager: () => FakeProcessManager.any(),
         Platform: () => platform,
-      }, initializeFlutterRoot: false);
+        FlutterVersion: () => FakeFlutterVersion(),
+      });
 
       testUsingContext('does not check that Flutter installation is up-to-date with --machine flag', () async {
-        final MockFlutterVersion version = globals.flutterVersion as MockFlutterVersion;
-        bool versionChecked = false;
-        when(version.checkFlutterVersionFreshness()).thenAnswer((_) async {
-          versionChecked = true;
-        });
+        final FakeFlutterVersion version = globals.flutterVersion as FakeFlutterVersion;
 
         await runner.run(<String>['dummy', '--machine', '--version']);
 
-        expect(versionChecked, isFalse);
+        expect(version.didCheckFlutterVersionFreshness, false);
       }, overrides: <Type, Generator>{
-        FileSystem: () => fs,
+        FileSystem: () => fileSystem,
         ProcessManager: () => FakeProcessManager.any(),
         Platform: () => platform,
-      }, initializeFlutterRoot: false);
+        FlutterVersion: () => FakeFlutterVersion(),
+      });
 
       testUsingContext('Fetches tags when --version is used', () async {
-        final MockFlutterVersion version = globals.flutterVersion as MockFlutterVersion;
+        final FakeFlutterVersion version = globals.flutterVersion as FakeFlutterVersion;
 
         await runner.run(<String>['--version']);
 
-        verify(version.fetchTagsAndUpdate()).called(1);
+        expect(version.didFetchTagsAndUpdate, true);
       }, overrides: <Type, Generator>{
-        FileSystem: () => fs,
+        FileSystem: () => fileSystem,
         ProcessManager: () => FakeProcessManager.any(),
         Platform: () => platform,
-      }, initializeFlutterRoot: false);
+        FlutterVersion: () => FakeFlutterVersion(),
+      });
 
     testUsingContext('Doesnt crash on invalid .packages file', () async {
-      fs.file('pubspec.yaml').createSync();
-      fs.file('.packages')
+      fileSystem.file('pubspec.yaml').createSync();
+      fileSystem.file('.packages')
         ..createSync()
         ..writeAsStringSync('Not a valid package');
 
       await runner.run(<String>['dummy']);
 
     }, overrides: <Type, Generator>{
-      FileSystem: () => fs,
+      FileSystem: () => fileSystem,
       ProcessManager: () => FakeProcessManager.any(),
       Platform: () => platform,
-    }, initializeFlutterRoot: false);
-
-    group('version', () {
-      testUsingContext('checks that Flutter toJson output reports the flutter framework version', () async {
-        final ProcessResult result = ProcessResult(0, 0, 'random', '0');
-
-        when(processManager.runSync(FlutterVersion.gitLog('-n 1 --pretty=format:%H'.split(' ')),
-          workingDirectory: Cache.flutterRoot)).thenReturn(result);
-        when(processManager.runSync('git rev-parse --abbrev-ref --symbolic @{u}'.split(' '),
-          workingDirectory: Cache.flutterRoot)).thenReturn(result);
-        when(processManager.runSync('git rev-parse --abbrev-ref HEAD'.split(' '),
-          workingDirectory: Cache.flutterRoot)).thenReturn(result);
-        when(processManager.runSync('git ls-remote --get-url master'.split(' '),
-          workingDirectory: Cache.flutterRoot)).thenReturn(result);
-        when(processManager.runSync(FlutterVersion.gitLog('-n 1 --pretty=format:%ar'.split(' ')),
-          workingDirectory: Cache.flutterRoot)).thenReturn(result);
-        when(processManager.runSync('git fetch https://github.com/flutter/flutter.git --tags'.split(' '),
-          workingDirectory: Cache.flutterRoot)).thenReturn(result);
-        when(processManager.runSync('git tag --points-at random'.split(' '),
-          workingDirectory: Cache.flutterRoot)).thenReturn(result);
-        when(processManager.runSync('git describe --match *.*.* --long --tags random'.split(' '),
-          workingDirectory: Cache.flutterRoot)).thenReturn(result);
-        when(processManager.runSync(FlutterVersion.gitLog('-n 1 --pretty=format:%ad --date=iso'.split(' ')),
-          workingDirectory: Cache.flutterRoot)).thenReturn(result);
-
-        final FakeFlutterVersion version = FakeFlutterVersion();
-
-        // Because the hash depends on the time, we just use the 0.0.0-unknown here.
-        expect(version.toJson()['frameworkVersion'], '0.10.3');
-      }, overrides: <Type, Generator>{
-        FileSystem: () => fs,
-        ProcessManager: () => processManager,
-        Platform: () => platform,
-      }, initializeFlutterRoot: false);
     });
 
     group('getRepoPackages', () {
@@ -150,16 +109,16 @@ void main() {
       setUp(() {
         oldFlutterRoot = Cache.flutterRoot;
         Cache.flutterRoot = _kFlutterRoot;
-        fs.directory(fs.path.join(_kFlutterRoot, 'examples'))
+        fileSystem.directory(fileSystem.path.join(_kFlutterRoot, 'examples'))
             .createSync(recursive: true);
-        fs.directory(fs.path.join(_kFlutterRoot, 'packages'))
+        fileSystem.directory(fileSystem.path.join(_kFlutterRoot, 'packages'))
             .createSync(recursive: true);
-        fs.directory(fs.path.join(_kFlutterRoot, 'dev', 'tools', 'aatool'))
+        fileSystem.directory(fileSystem.path.join(_kFlutterRoot, 'dev', 'tools', 'aatool'))
             .createSync(recursive: true);
 
-        fs.file(fs.path.join(_kFlutterRoot, 'dev', 'tools', 'pubspec.yaml'))
+        fileSystem.file(fileSystem.path.join(_kFlutterRoot, 'dev', 'tools', 'pubspec.yaml'))
             .createSync();
-        fs.file(fs.path.join(_kFlutterRoot, 'dev', 'tools', 'aatool', 'pubspec.yaml'))
+        fileSystem.file(fileSystem.path.join(_kFlutterRoot, 'dev', 'tools', 'aatool', 'pubspec.yaml'))
             .createSync();
       });
 
@@ -169,16 +128,17 @@ void main() {
 
       testUsingContext('', () {
         final List<String> packagePaths = runner.getRepoPackages()
-            .map((Directory d) => d.path).toList();
+          .map((Directory d) => d.path).toList();
         expect(packagePaths, <String>[
-          fs.directory(fs.path.join(_kFlutterRoot, 'dev', 'tools', 'aatool')).path,
-          fs.directory(fs.path.join(_kFlutterRoot, 'dev', 'tools')).path,
+          fileSystem.directory(fileSystem.path.join(_kFlutterRoot, 'dev', 'tools', 'aatool')).path,
+          fileSystem.directory(fileSystem.path.join(_kFlutterRoot, 'dev', 'tools')).path,
         ]);
       }, overrides: <Type, Generator>{
-        FileSystem: () => fs,
+        FileSystem: () => fileSystem,
         ProcessManager: () => FakeProcessManager.any(),
         Platform: () => platform,
-      }, initializeFlutterRoot: false);
+        FlutterVersion: () => FakeFlutterVersion(),
+      });
     });
 
     group('wrapping', () {
@@ -188,7 +148,7 @@ void main() {
         await runner.run(<String>['fake']);
         expect(fakeCommand.preferences.wrapText, isTrue);
       }, overrides: <Type, Generator>{
-        FileSystem: () => fs,
+        FileSystem: () => fileSystem,
         ProcessManager: () => FakeProcessManager.any(),
         Stdio: () => FakeStdio(hasFakeTerminal: true),
       }, initializeFlutterRoot: false);
@@ -199,7 +159,7 @@ void main() {
         await runner.run(<String>['fake']);
         expect(fakeCommand.preferences.wrapText, isFalse);
       }, overrides: <Type, Generator>{
-        FileSystem: () => fs,
+        FileSystem: () => fileSystem,
         ProcessManager: () => FakeProcessManager.any(),
         Stdio: () => FakeStdio(hasFakeTerminal: false),
       }, initializeFlutterRoot: false);
@@ -210,7 +170,7 @@ void main() {
         await runner.run(<String>['--no-wrap', 'fake']);
         expect(fakeCommand.preferences.wrapText, isFalse);
       }, overrides: <Type, Generator>{
-        FileSystem: () => fs,
+        FileSystem: () => fileSystem,
         ProcessManager: () => FakeProcessManager.any(),
         Stdio: () => FakeStdio(hasFakeTerminal: true),
       }, initializeFlutterRoot: false);
@@ -221,7 +181,7 @@ void main() {
         await runner.run(<String>['--wrap', 'fake']);
         expect(fakeCommand.preferences.wrapText, isTrue);
       }, overrides: <Type, Generator>{
-        FileSystem: () => fs,
+        FileSystem: () => fileSystem,
         ProcessManager: () => FakeProcessManager.any(),
         Stdio: () => FakeStdio(hasFakeTerminal: false),
       }, initializeFlutterRoot: false);
@@ -229,12 +189,6 @@ void main() {
   });
   });
 }
-class MockProcessManager extends Mock implements ProcessManager {}
-
-class FakeFlutterVersion extends FlutterVersion {
-  @override
-  String get frameworkVersion => '0.10.3';
-}
 
 class FakeFlutterCommand extends FlutterCommand {
   OutputPreferences preferences;

packages/flutter_tools/test/general.shard/tester/flutter_tester_test.dart

@@ -16,8 +16,6 @@ import 'package:flutter_tools/src/build_info.dart';
 import 'package:flutter_tools/src/build_system/build_system.dart';
 import 'package:flutter_tools/src/device.dart';
 import 'package:flutter_tools/src/tester/flutter_tester.dart';
-import 'package:flutter_tools/src/version.dart';
-import 'package:mockito/mockito.dart';
 
 import '../../src/common.dart';
 import '../../src/context.dart';
@@ -100,7 +98,7 @@ void main() {
         artifacts: Artifacts.test(),
         buildDirectory: 'build',
         logger: BufferLogger.test(),
-        flutterVersion: MockFlutterVersion(),
+        flutterVersion: FakeFlutterVersion(),
         operatingSystemUtils: FakeOperatingSystemUtils(),
       );
       logLines = <String>[];
@@ -183,9 +181,7 @@ FlutterTesterDevices setUpFlutterTesterDevices() {
     processManager: FakeProcessManager.any(),
     fileSystem: MemoryFileSystem.test(),
     config: Config.test(),
-    flutterVersion: MockFlutterVersion(),
+    flutterVersion: FakeFlutterVersion(),
     operatingSystemUtils: FakeOperatingSystemUtils(),
   );
 }
-
-class MockFlutterVersion extends Mock implements FlutterVersion {}

packages/flutter_tools/test/src/context.dart

@@ -112,7 +112,7 @@ void testUsingContext(
           Config: () => buildConfig(globals.fs),
           DeviceManager: () => FakeDeviceManager(),
           Doctor: () => FakeDoctor(globals.logger),
-          FlutterVersion: () => MockFlutterVersion(),
+          FlutterVersion: () => FakeFlutterVersion(),
           HttpClient: () => FakeHttpClient.any(),
           IOSSimulatorUtils: () {
             final MockIOSSimulatorUtils mock = MockIOSSimulatorUtils();
@@ -377,8 +377,6 @@ class FakeXcodeProjectInterpreter implements XcodeProjectInterpreter {
   List<String> xcrunCommand() => <String>['xcrun'];
 }
 
-class MockFlutterVersion extends Mock implements FlutterVersion {}
-
 class MockCrashReporter extends Mock implements CrashReporter {}
 
 class LocalFileSystemBlockingSetCurrentDirectory extends LocalFileSystem {

packages/flutter_tools/test/src/fakes.dart

@@ -448,52 +448,80 @@ class FakePub extends Fake implements Pub {
 }
 
 class FakeFlutterVersion implements FlutterVersion {
+  FakeFlutterVersion({
+    this.channel = 'unknown',
+    this.dartSdkVersion = '12',
+    this.engineRevision = 'abcdefghijklmnopqrstuvwxyz',
+    this.engineRevisionShort = 'abcde',
+    this.repositoryUrl = 'https://github.com/flutter/flutter.git',
+    this.frameworkVersion = '0.0.0',
+    this.frameworkRevision = '11111111111111111111',
+    this.frameworkRevisionShort = '11111',
+    this.frameworkAge = '0 hours ago',
+    this.frameworkCommitDate = '12/01/01'
+  });
+
+  bool get didFetchTagsAndUpdate => _didFetchTagsAndUpdate;
+  bool _didFetchTagsAndUpdate = false;
+
+  bool get didCheckFlutterVersionFreshness => _didCheckFlutterVersionFreshness;
+  bool _didCheckFlutterVersionFreshness = false;
+
   @override
-  void fetchTagsAndUpdate() {  }
+  final String channel;
 
   @override
-  String get channel => 'master';
+  final String dartSdkVersion;
 
   @override
-  Future<void> checkFlutterVersionFreshness() async { }
+  final String engineRevision;
 
   @override
-  bool checkRevisionAncestry({String tentativeDescendantRevision, String tentativeAncestorRevision}) {
-    throw UnimplementedError();
-  }
+  final String engineRevisionShort;
 
   @override
-  String get dartSdkVersion => '12';
+  final String repositoryUrl;
 
   @override
-  String get engineRevision => '42.2';
+  final String frameworkVersion;
 
   @override
-  String get engineRevisionShort => '42';
+  final String frameworkRevision;
 
   @override
-  Future<void> ensureVersionFile() async { }
+  final String frameworkRevisionShort;
+
+  @override
+  final String frameworkAge;
 
   @override
-  String get frameworkAge => null;
+  final String frameworkCommitDate;
 
   @override
-  String get frameworkCommitDate => null;
+  String get frameworkDate => frameworkCommitDate;
 
   @override
-  String get frameworkDate => null;
+  void fetchTagsAndUpdate() {
+    _didFetchTagsAndUpdate = true;
+  }
 
   @override
-  String get frameworkRevision => null;
+  Future<void> checkFlutterVersionFreshness() async {
+    _didCheckFlutterVersionFreshness = true;
+  }
 
   @override
-  String get frameworkRevisionShort => null;
+  bool checkRevisionAncestry({String tentativeDescendantRevision, String tentativeAncestorRevision}) {
+    throw UnimplementedError();
+  }
 
   @override
-  String get frameworkVersion => null;
+  GitTagVersion get gitTagVersion {
+    throw UnimplementedError();
+  }
 
   @override
-  GitTagVersion get gitTagVersion => null;
+  Future<void> ensureVersionFile() async { }
 
   @override
   String getBranchName({bool redactUnknownBranches = false}) {
@@ -505,12 +533,9 @@ class FakeFlutterVersion implements FlutterVersion {
     return 'v0.0.0';
   }
 
-  @override
-  String get repositoryUrl => null;
-
   @override
   Map<String, Object> toJson() {
-    return null;
+    return <String, Object>{};
   }
 }
 

packages/flutter_tools/test/src/mocks.dart

@@ -15,6 +15,7 @@ import 'package:flutter_tools/src/build_info.dart';
 import 'package:flutter_tools/src/globals.dart' as globals;
 import 'package:flutter_tools/src/ios/devices.dart';
 import 'package:flutter_tools/src/project.dart';
+import 'package:flutter_tools/src/version.dart';
 import 'package:mockito/mockito.dart';
 import 'package:process/process.dart';
 
@@ -232,3 +233,4 @@ class MockStdIn extends Mock implements IOSink {
 }
 
 class MockStream extends Mock implements Stream<List<int>> {}
+class MockFlutterVersion extends Mock implements FlutterVersion {}