enable lint unnecessary_const (#19342)

analysis_options.yaml

@@ -142,6 +142,7 @@ linter:
     - type_init_formals
     # - unawaited_futures # https://github.com/flutter/flutter/issues/5793
     - unnecessary_brace_in_string_interps
+    - unnecessary_const
     - unnecessary_getters_setters
     # - unnecessary_lambdas # https://github.com/dart-lang/linter/issues/498
     - unnecessary_null_aware_assignments

dev/benchmarks/complex_layout/lib/main.dart

@@ -133,43 +133,43 @@ class TopBarMenu extends StatelessWidget {
       itemBuilder: (BuildContext context) => <PopupMenuItem<String>>[
         const PopupMenuItem<String>(
           value: 'Friends',
-          child: const MenuItemWithIcon(Icons.people, 'Friends', '5 new')
+          child: MenuItemWithIcon(Icons.people, 'Friends', '5 new')
         ),
         const PopupMenuItem<String>(
           value: 'Events',
-          child: const MenuItemWithIcon(Icons.event, 'Events', '12 upcoming')
+          child: MenuItemWithIcon(Icons.event, 'Events', '12 upcoming')
         ),
         const PopupMenuItem<String>(
           value: 'Events',
-          child: const MenuItemWithIcon(Icons.group, 'Groups', '14')
+          child: MenuItemWithIcon(Icons.group, 'Groups', '14')
         ),
         const PopupMenuItem<String>(
           value: 'Events',
-          child: const MenuItemWithIcon(Icons.image, 'Pictures', '12')
+          child: MenuItemWithIcon(Icons.image, 'Pictures', '12')
         ),
         const PopupMenuItem<String>(
           value: 'Events',
-          child: const MenuItemWithIcon(Icons.near_me, 'Nearby', '33')
+          child: MenuItemWithIcon(Icons.near_me, 'Nearby', '33')
         ),
         const PopupMenuItem<String>(
           value: 'Friends',
-          child: const MenuItemWithIcon(Icons.people, 'Friends', '5')
+          child: MenuItemWithIcon(Icons.people, 'Friends', '5')
         ),
         const PopupMenuItem<String>(
           value: 'Events',
-          child: const MenuItemWithIcon(Icons.event, 'Events', '12')
+          child: MenuItemWithIcon(Icons.event, 'Events', '12')
         ),
         const PopupMenuItem<String>(
           value: 'Events',
-          child: const MenuItemWithIcon(Icons.group, 'Groups', '14')
+          child: MenuItemWithIcon(Icons.group, 'Groups', '14')
         ),
         const PopupMenuItem<String>(
           value: 'Events',
-          child: const MenuItemWithIcon(Icons.image, 'Pictures', '12')
+          child: MenuItemWithIcon(Icons.image, 'Pictures', '12')
         ),
         const PopupMenuItem<String>(
           value: 'Events',
-          child: const MenuItemWithIcon(Icons.near_me, 'Nearby', '33')
+          child: MenuItemWithIcon(Icons.near_me, 'Nearby', '33')
         )
       ]
     );
@@ -212,8 +212,8 @@ class FancyImageItem extends StatelessWidget {
         new ItemImageBox(),
         new InfoBar(),
         const Padding(
-          padding: const EdgeInsets.symmetric(horizontal: 8.0),
-          child: const Divider()
+          padding: EdgeInsets.symmetric(horizontal: 8.0),
+          child: Divider()
         ),
         new IconBar(),
         new FatDivider()
@@ -234,8 +234,8 @@ class FancyGalleryItem extends StatelessWidget {
         new ItemGalleryBox(index),
         new InfoBar(),
         const Padding(
-          padding: const EdgeInsets.symmetric(horizontal: 8.0),
-          child: const Divider()
+          padding: EdgeInsets.symmetric(horizontal: 8.0),
+          child: Divider()
         ),
         new IconBar(),
         new FatDivider()
@@ -268,9 +268,9 @@ class IconBar extends StatelessWidget {
       child: new Row(
         mainAxisAlignment: MainAxisAlignment.spaceBetween,
         children: const <Widget>[
-          const IconWithText(Icons.thumb_up, 'Like'),
-          const IconWithText(Icons.comment, 'Comment'),
-          const IconWithText(Icons.share, 'Share'),
+          IconWithText(Icons.thumb_up, 'Like'),
+          IconWithText(Icons.comment, 'Comment'),
+          IconWithText(Icons.share, 'Share'),
         ]
       )
     );
@@ -350,9 +350,9 @@ class UserHeader extends StatelessWidget {
         crossAxisAlignment: CrossAxisAlignment.start,
         children: <Widget>[
           const Padding(
-            padding: const EdgeInsets.only(right: 8.0),
-            child: const Image(
-              image: const AssetImage('packages/flutter_gallery_assets/people/square/ali.png'),
+            padding: EdgeInsets.only(right: 8.0),
+            child: Image(
+              image: AssetImage('packages/flutter_gallery_assets/people/square/ali.png'),
               width: 32.0,
               height: 32.0
             )
@@ -367,7 +367,7 @@ class UserHeader extends StatelessWidget {
                   children: <TextSpan>[
                     new TextSpan(text: userName, style: const TextStyle(fontWeight: FontWeight.bold)),
                     const TextSpan(text: ' shared a new '),
-                    const TextSpan(text: 'photo', style: const TextStyle(fontWeight: FontWeight.bold))
+                    const TextSpan(text: 'photo', style: TextStyle(fontWeight: FontWeight.bold))
                   ]
                 )),
                 new Row(
@@ -390,8 +390,8 @@ class ItemDescription extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return const Padding(
-      padding: const EdgeInsets.all(8.0),
-      child: const Text('Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.')
+      padding: EdgeInsets.all(8.0),
+      child: Text('Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.')
     );
   }
 }
@@ -409,8 +409,8 @@ class ItemImageBox extends StatelessWidget {
               children: <Widget>[
                 const SizedBox(
                   height: 230.0,
-                  child: const Image(
-                    image: const AssetImage('packages/flutter_gallery_assets/places/india_chettinad_silk_maker.png')
+                  child: Image(
+                    image: AssetImage('packages/flutter_gallery_assets/places/india_chettinad_silk_maker.png')
                   )
                 ),
                 new Theme(
@@ -439,14 +439,14 @@ class ItemImageBox extends StatelessWidget {
                     ),
                     padding: const EdgeInsets.all(4.0),
                     child: const RichText(
-                      text: const TextSpan(
-                        style: const TextStyle(color: Colors.white),
-                        children: const <TextSpan>[
-                          const TextSpan(
+                      text: TextSpan(
+                        style: TextStyle(color: Colors.white),
+                        children: <TextSpan>[
+                          TextSpan(
                             text: 'Photo by '
                           ),
-                          const TextSpan(
-                            style: const TextStyle(fontWeight: FontWeight.bold),
+                          TextSpan(
+                            style: TextStyle(fontWeight: FontWeight.bold),
                             text: 'Chris Godley'
                           )
                         ]
@@ -561,11 +561,11 @@ class BottomBar extends StatelessWidget {
       child: new Row(
         mainAxisAlignment: MainAxisAlignment.spaceBetween,
         children: const <Widget>[
-          const BottomBarButton(Icons.new_releases, 'News'),
-          const BottomBarButton(Icons.people, 'Requests'),
-          const BottomBarButton(Icons.chat, 'Messenger'),
-          const BottomBarButton(Icons.bookmark, 'Bookmark'),
-          const BottomBarButton(Icons.alarm, 'Alarm'),
+          BottomBarButton(Icons.new_releases, 'News'),
+          BottomBarButton(Icons.people, 'Requests'),
+          BottomBarButton(Icons.chat, 'Messenger'),
+          BottomBarButton(Icons.bookmark, 'Bookmark'),
+          BottomBarButton(Icons.alarm, 'Alarm'),
         ],
       ),
     );
@@ -670,7 +670,7 @@ class FancyDrawerHeader extends StatelessWidget {
       height: 200.0,
       child: const SafeArea(
         bottom: false,
-        child: const Placeholder(),
+        child: Placeholder(),
       ),
     );
   }

dev/benchmarks/microbenchmarks/lib/stocks/animation_bench.dart

@@ -13,7 +13,7 @@ import 'package:stocks/stock_data.dart' as stock_data;
 
 import '../common.dart';
 
-const Duration kBenchmarkTime = const Duration(seconds: 15);
+const Duration kBenchmarkTime = Duration(seconds: 15);
 
 class BenchmarkingBinding extends LiveTestWidgetsFlutterBinding {
   BenchmarkingBinding(this.stopwatch);

dev/benchmarks/microbenchmarks/lib/stocks/build_bench.dart

@@ -13,7 +13,7 @@ import 'package:stocks/stock_data.dart' as stock_data;
 
 import '../common.dart';
 
-const Duration kBenchmarkTime = const Duration(seconds: 15);
+const Duration kBenchmarkTime = Duration(seconds: 15);
 
 Future<Null> main() async {
   assert(false); // don't run this in checked mode! Use --release.

dev/benchmarks/microbenchmarks/lib/stocks/layout_bench.dart

@@ -13,7 +13,7 @@ import 'package:stocks/stock_data.dart' as stock_data;
 
 import '../common.dart';
 
-const Duration kBenchmarkTime = const Duration(seconds: 15);
+const Duration kBenchmarkTime = Duration(seconds: 15);
 
 Future<Null> main() async {
   stock_data.StockData.actuallyFetchData = false;

dev/bots/prepare_package.dart

@@ -520,7 +520,7 @@ class ArchivePublisher {
 
     jsonData = _addRelease(jsonData);
 
-    const JsonEncoder encoder = const JsonEncoder.withIndent('  ');
+    const JsonEncoder encoder = JsonEncoder.withIndent('  ');
     metadataFile.writeAsStringSync(encoder.convert(jsonData));
     await _cloudCopy(metadataFile.absolute.path, metadataGsPath);
   }

dev/bots/test.dart

@@ -25,7 +25,7 @@ final String yellow = hasColor ? '\x1B[33m' : '';
 final String cyan = hasColor ? '\x1B[36m' : '';
 final String reset = hasColor ? '\x1B[0m' : '';
 
-const Map<String, ShardRunner> _kShards = const <String, ShardRunner>{
+const Map<String, ShardRunner> _kShards = <String, ShardRunner>{
   'analyze': _analyzeRepo,
   'tests': _runTests,
   'coverage': _runCoverage,
@@ -33,8 +33,8 @@ const Map<String, ShardRunner> _kShards = const <String, ShardRunner>{
   // 'build_and_deploy_gallery': handled by travis_script.sh
 };
 
-const Duration _kLongTimeout = const Duration(minutes: 45);
-const Duration _kShortTimeout = const Duration(minutes: 5);
+const Duration _kLongTimeout = Duration(minutes: 45);
+const Duration _kShortTimeout = Duration(minutes: 5);
 
 /// When you call this, you can pass additional arguments to pass custom
 /// arguments to flutter test. For example, you might want to call this

dev/bots/test/prepare_package_test.dart

@@ -313,7 +313,7 @@ void main() {
           new DateTime.now().difference(DateTime.parse(releases[0]['release_date'])),
           lessThan(const Duration(minutes: 1)),
         );
-        const JsonEncoder encoder = const JsonEncoder.withIndent('  ');
+        const JsonEncoder encoder = JsonEncoder.withIndent('  ');
         expect(contents, equals(encoder.convert(jsonData)));
       });
     });

dev/devicelab/lib/framework/framework.dart

@@ -16,7 +16,7 @@ import 'utils.dart';
 /// Maximum amount of time a single task is allowed to take to run.
 ///
 /// If exceeded the task is considered to have failed.
-const Duration _kDefaultTaskTimeout = const Duration(minutes: 15);
+const Duration _kDefaultTaskTimeout = Duration(minutes: 15);
 
 /// Represents a unit of work performed in the CI environment that can
 /// succeed, fail and be retried independently of others.
@@ -103,7 +103,7 @@ class _TaskRunner {
     _keepAlivePort = new RawReceivePort();
 
     // Timeout if nothing bothers to connect and ask us to run the task.
-    const Duration taskStartTimeout = const Duration(seconds: 10);
+    const Duration taskStartTimeout = Duration(seconds: 10);
     _startTaskTimeout = new Timer(taskStartTimeout, () {
       if (!_taskStarted) {
         logger.severe('Task did not start in $taskStartTimeout.');
@@ -147,7 +147,7 @@ class TaskResult {
   TaskResult.success(this.data, {this.benchmarkScoreKeys = const <String>[]})
       : this.succeeded = true,
         this.message = 'success' {
-    const JsonEncoder prettyJson = const JsonEncoder.withIndent('  ');
+    const JsonEncoder prettyJson = JsonEncoder.withIndent('  ');
     if (benchmarkScoreKeys != null) {
       for (String key in benchmarkScoreKeys) {
         if (!data.containsKey(key)) {

dev/devicelab/lib/framework/ios.dart

@@ -13,7 +13,7 @@ import 'utils.dart';
 
 const String _kProvisioningConfigFileEnvironmentVariable = 'FLUTTER_DEVICELAB_XCODE_PROVISIONING_CONFIG';
 const String _kTestXcconfigFileName = 'TestConfig.xcconfig';
-const FileSystem _fs = const io.LocalFileSystem();
+const FileSystem _fs = io.LocalFileSystem();
 
 /// Patches the given Xcode project adding provisioning certificates and team
 /// information required to build and run the project, if

dev/devicelab/lib/framework/runner.dart

@@ -12,7 +12,7 @@ import 'package:flutter_devicelab/framework/utils.dart';
 
 /// Slightly longer than task timeout that gives the task runner a chance to
 /// clean-up before forcefully quitting it.
-const Duration taskTimeoutWithGracePeriod = const Duration(minutes: 26);
+const Duration taskTimeoutWithGracePeriod = Duration(minutes: 26);
 
 /// Runs a task in a separate Dart VM and collects the result using the VM
 /// service protocol.
@@ -111,7 +111,7 @@ Future<VMIsolateRef> _connectToRunnerIsolate(int vmServicePort) async {
         throw 'not ready yet';
       return isolate;
     } catch (error) {
-      const Duration connectionTimeout = const Duration(seconds: 10);
+      const Duration connectionTimeout = Duration(seconds: 10);
       if (new DateTime.now().difference(started) > connectionTimeout) {
         throw new TimeoutException(
           'Failed to connect to the task runner process',
@@ -119,7 +119,7 @@ Future<VMIsolateRef> _connectToRunnerIsolate(int vmServicePort) async {
         );
       }
       print('VM service not ready yet: $error');
-      const Duration pauseBetweenRetries = const Duration(milliseconds: 200);
+      const Duration pauseBetweenRetries = Duration(milliseconds: 200);
       print('Will retry in $pauseBetweenRetries.');
       await new Future<Null>.delayed(pauseBetweenRetries);
     }

dev/devicelab/lib/framework/utils.dart

@@ -541,7 +541,7 @@ void setLocalEngineOptionIfNecessary(List<String> options, [String flavor]) {
       // If engine flavor was not specified explicitly then scan options looking
       // for flags that specify the engine flavor (--release, --profile or
       // --debug). Default flavor to debug if no flags were found.
-      const Map<String, String> optionToFlavor = const <String, String>{
+      const Map<String, String> optionToFlavor = <String, String>{
         '--release': 'release',
         '--debug': 'debug',
         '--profile': 'profile',
@@ -557,7 +557,7 @@ void setLocalEngineOptionIfNecessary(List<String> options, [String flavor]) {
       flavor ??= 'debug';
     }
 
-    const Map<DeviceOperatingSystem, String> osNames = const <DeviceOperatingSystem, String>{
+    const Map<DeviceOperatingSystem, String> osNames = <DeviceOperatingSystem, String>{
       DeviceOperatingSystem.ios: 'ios',
       DeviceOperatingSystem.android: 'android',
     };

dev/devicelab/lib/tasks/integration_ui.dart

@@ -21,7 +21,7 @@ Future<TaskResult> runEndToEndTests() async {
     if (deviceOperatingSystem == DeviceOperatingSystem.ios)
       await prepareProvisioningCertificates(testDirectory.path);
 
-    const List<String> entryPoints = const <String>[
+    const List<String> entryPoints = <String>[
       'lib/keyboard_resize.dart',
       'lib/driver.dart',
       'lib/screenshot.dart',

dev/devicelab/lib/tasks/microbenchmarks.dart

@@ -14,7 +14,7 @@ import 'package:flutter_devicelab/framework/ios.dart';
 import 'package:flutter_devicelab/framework/utils.dart';
 
 /// The maximum amount of time a single microbenchmark is allowed to take.
-const Duration _kBenchmarkTimeout = const Duration(minutes: 10);
+const Duration _kBenchmarkTimeout = Duration(minutes: 10);
 
 /// Creates a device lab task that runs benchmarks in
 /// `dev/benchmarks/microbenchmarks` reports results to the dashboard.

dev/devicelab/lib/tasks/perf_tests.dart

@@ -113,7 +113,7 @@ TaskFunction createBasicMaterialCompileTest() {
 
 /// Measure application startup performance.
 class StartupTest {
-  static const Duration _startupTimeout = const Duration(minutes: 5);
+  static const Duration _startupTimeout = Duration(minutes: 5);
 
   const StartupTest(this.testDirectory, { this.reportMetrics = true });
 
@@ -350,7 +350,7 @@ class CompileTest {
     };
   }
 
-  static const Map<String, String> _kSdkNameToMetricNameMapping = const <String, String> {
+  static const Map<String, String> _kSdkNameToMetricNameMapping = <String, String> {
     'VMIsolate': 'aot_snapshot_size_vmisolate',
     'Isolate': 'aot_snapshot_size_isolate',
     'ReadOnlyData': 'aot_snapshot_size_rodata',

dev/devicelab/test/run_test.dart

@@ -10,7 +10,7 @@ import 'package:process/process.dart';
 import 'package:test/test.dart';
 
 void main() {
-  const ProcessManager processManager = const LocalProcessManager();
+  const ProcessManager processManager = LocalProcessManager();
 
   group('run.dart script', () {
     Future<ProcessResult> runScript(List<String> testNames) async {

dev/integration_tests/channels/lib/src/basic_messaging.dart

@@ -43,36 +43,36 @@ class ExtendedStandardMessageCodec extends StandardMessageCodec {
 
 Future<TestStepResult> basicBinaryHandshake(ByteData message) async {
   const BasicMessageChannel<ByteData> channel =
-      const BasicMessageChannel<ByteData>(
+      BasicMessageChannel<ByteData>(
     'binary-msg',
-    const BinaryCodec(),
+    BinaryCodec(),
   );
   return _basicMessageHandshake<ByteData>(
       'Binary >${toString(message)}<', channel, message);
 }
 
 Future<TestStepResult> basicStringHandshake(String message) async {
-  const BasicMessageChannel<String> channel = const BasicMessageChannel<String>(
+  const BasicMessageChannel<String> channel = BasicMessageChannel<String>(
     'string-msg',
-    const StringCodec(),
+    StringCodec(),
   );
   return _basicMessageHandshake<String>('String >$message<', channel, message);
 }
 
 Future<TestStepResult> basicJsonHandshake(dynamic message) async {
   const BasicMessageChannel<dynamic> channel =
-      const BasicMessageChannel<dynamic>(
+      BasicMessageChannel<dynamic>(
     'json-msg',
-    const JSONMessageCodec(),
+    JSONMessageCodec(),
   );
   return _basicMessageHandshake<dynamic>('JSON >$message<', channel, message);
 }
 
 Future<TestStepResult> basicStandardHandshake(dynamic message) async {
   const BasicMessageChannel<dynamic> channel =
-      const BasicMessageChannel<dynamic>(
+      BasicMessageChannel<dynamic>(
     'std-msg',
-    const ExtendedStandardMessageCodec(),
+    ExtendedStandardMessageCodec(),
   );
   return _basicMessageHandshake<dynamic>(
       'Standard >${toString(message)}<', channel, message);
@@ -80,35 +80,35 @@ Future<TestStepResult> basicStandardHandshake(dynamic message) async {
 
 Future<TestStepResult> basicBinaryMessageToUnknownChannel() async {
   const BasicMessageChannel<ByteData> channel =
-      const BasicMessageChannel<ByteData>(
+      BasicMessageChannel<ByteData>(
     'binary-unknown',
-    const BinaryCodec(),
+    BinaryCodec(),
   );
   return _basicMessageToUnknownChannel<ByteData>('Binary', channel);
 }
 
 Future<TestStepResult> basicStringMessageToUnknownChannel() async {
-  const BasicMessageChannel<String> channel = const BasicMessageChannel<String>(
+  const BasicMessageChannel<String> channel = BasicMessageChannel<String>(
     'string-unknown',
-    const StringCodec(),
+    StringCodec(),
   );
   return _basicMessageToUnknownChannel<String>('String', channel);
 }
 
 Future<TestStepResult> basicJsonMessageToUnknownChannel() async {
   const BasicMessageChannel<dynamic> channel =
-      const BasicMessageChannel<dynamic>(
+      BasicMessageChannel<dynamic>(
     'json-unknown',
-    const JSONMessageCodec(),
+    JSONMessageCodec(),
   );
   return _basicMessageToUnknownChannel<dynamic>('JSON', channel);
 }
 
 Future<TestStepResult> basicStandardMessageToUnknownChannel() async {
   const BasicMessageChannel<dynamic> channel =
-      const BasicMessageChannel<dynamic>(
+      BasicMessageChannel<dynamic>(
     'std-unknown',
-    const ExtendedStandardMessageCodec(),
+    ExtendedStandardMessageCodec(),
   );
   return _basicMessageToUnknownChannel<dynamic>('Standard', channel);
 }

dev/integration_tests/channels/lib/src/method_calls.dart

@@ -9,46 +9,46 @@ import 'test_step.dart';
 
 Future<TestStepResult> methodCallJsonSuccessHandshake(dynamic payload) async {
   const MethodChannel channel =
-      const MethodChannel('json-method', const JSONMethodCodec());
+      MethodChannel('json-method', JSONMethodCodec());
   return _methodCallSuccessHandshake(
       'JSON success($payload)', channel, payload);
 }
 
 Future<TestStepResult> methodCallJsonErrorHandshake(dynamic payload) async {
   const MethodChannel channel =
-      const MethodChannel('json-method', const JSONMethodCodec());
+      MethodChannel('json-method', JSONMethodCodec());
   return _methodCallErrorHandshake('JSON error($payload)', channel, payload);
 }
 
 Future<TestStepResult> methodCallJsonNotImplementedHandshake() async {
   const MethodChannel channel =
-      const MethodChannel('json-method', const JSONMethodCodec());
+      MethodChannel('json-method', JSONMethodCodec());
   return _methodCallNotImplementedHandshake('JSON notImplemented()', channel);
 }
 
 Future<TestStepResult> methodCallStandardSuccessHandshake(
     dynamic payload) async {
-  const MethodChannel channel = const MethodChannel(
+  const MethodChannel channel = MethodChannel(
     'std-method',
-    const StandardMethodCodec(const ExtendedStandardMessageCodec()),
+    StandardMethodCodec(ExtendedStandardMessageCodec()),
   );
   return _methodCallSuccessHandshake(
       'Standard success($payload)', channel, payload);
 }
 
 Future<TestStepResult> methodCallStandardErrorHandshake(dynamic payload) async {
-  const MethodChannel channel = const MethodChannel(
+  const MethodChannel channel = MethodChannel(
     'std-method',
-    const StandardMethodCodec(const ExtendedStandardMessageCodec()),
+    StandardMethodCodec(ExtendedStandardMessageCodec()),
   );
   return _methodCallErrorHandshake(
       'Standard error($payload)', channel, payload);
 }
 
 Future<TestStepResult> methodCallStandardNotImplementedHandshake() async {
-  const MethodChannel channel = const MethodChannel(
+  const MethodChannel channel = MethodChannel(
     'std-method',
-    const StandardMethodCodec(const ExtendedStandardMessageCodec()),
+    StandardMethodCodec(ExtendedStandardMessageCodec()),
   );
   return _methodCallNotImplementedHandshake(
       'Standard notImplemented()', channel);

dev/integration_tests/channels/lib/src/test_step.dart

@@ -25,8 +25,8 @@ const String nothing = '-';
 /// - The Flutter app records the incoming reply echo.
 /// - The platform finally replies to the original message with another echo.
 class TestStepResult {
-  static const TextStyle bold = const TextStyle(fontWeight: FontWeight.bold);
-  static const TestStepResult complete = const TestStepResult(
+  static const TextStyle bold = TextStyle(fontWeight: FontWeight.bold);
+  static const TestStepResult complete = TestStepResult(
     'Test complete',
     nothing,
     TestStatus.complete,