fix(#231): Exposed `frameBindingPolicy` on the test runner when running tests which can affect how frames are painted and the speed of the test run, I've removed the default value which might be responsible for #231

CHANGELOG.md

@@ -1,3 +1,6 @@
+## [3.0.0-rc.15] - 28/06/2022
+  - Exposed `frameBindingPolicy` on the test runner when running tests which can affect how frames are painted and the speed of the test run, I've removed the default value which might be responsible for #231
+
 ## [3.0.0-rc.14] - 28/06/2022
   - Fix #237 - Ensure everything works on the web
 

example_with_integration_test/integration_test/gherkin/configuration.dart

@@ -5,6 +5,7 @@ import 'package:flutter_gherkin/flutter_gherkin.dart';
 import 'package:flutter_simple_dependency_injection/injector.dart';
 import 'package:gherkin/gherkin.dart';
 
+import 'hooks/attach_screenshot_after_step_hook.dart';
 import 'hooks/reset_app_hook.dart';
 import 'steps/expect_todos_step.dart';
 import 'steps/multiline_string_with_formatted_json.dart';
@@ -22,7 +23,7 @@ FlutterTestConfiguration gherkinTestConfiguration = FlutterTestConfiguration(
   ],
   hooks: [
     ResetAppHook(),
-    // AttachScreenshotAfterStepHook(),
+    AttachScreenshotAfterStepHook(),
   ],
   reporters: [
     StdoutReporter(MessageLevel.error)

example_with_integration_test/integration_test/gherkin_suite_test.g.dart

@@ -12,11 +12,13 @@ class _CustomGherkinIntegrationTestRunner extends GherkinIntegrationTestRunner {
     required StartAppFn appMainFunction,
     required Timeout scenarioExecutionTimeout,
     AppLifecyclePumpHandlerFn? appLifecyclePumpHandler,
+    LiveTestWidgetsFlutterBindingFramePolicy? framePolicy,
   }) : super(
           configuration: configuration,
           appMainFunction: appMainFunction,
           scenarioExecutionTimeout: scenarioExecutionTimeout,
           appLifecyclePumpHandler: appLifecyclePumpHandler,
+          framePolicy: framePolicy,
         );
 
   @override
@@ -389,11 +391,13 @@ void executeTestSuite({
   required StartAppFn appMainFunction,
   Timeout scenarioExecutionTimeout = const Timeout(Duration(minutes: 10)),
   AppLifecyclePumpHandlerFn? appLifecyclePumpHandler,
+  LiveTestWidgetsFlutterBindingFramePolicy? framePolicy,
 }) {
   _CustomGherkinIntegrationTestRunner(
     configuration: configuration,
     appMainFunction: appMainFunction,
     appLifecyclePumpHandler: appLifecyclePumpHandler,
     scenarioExecutionTimeout: scenarioExecutionTimeout,
+    framePolicy: framePolicy,
   ).run();
 }

example_with_integration_test/pubspec.lock

@@ -213,7 +213,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "3.0.0-rc.13"
+    version: "3.0.0-rc.14"
   flutter_simple_dependency_injection:
     dependency: "direct main"
     description:

example_with_integration_test/test_driver/integration_test_driver.dart

@@ -64,7 +64,7 @@ Future<void> writeGherkinReports(List<dynamic> reports) async {
     File file = File(
       '${integration_test_driver.testOutputsDirectory}/'
       '$filenamePrefix'
-      'v${i + 1}.json',
+      '-v${i + 1}.json',
     );
 
     await file.writeAsString(json.encode(reportData));

lib/src/flutter/adapters/widget_tester_app_driver_adapter.dart

@@ -25,11 +25,13 @@ class WidgetTesterAppDriverAdapter
     Duration? duration = const Duration(milliseconds: 100),
     Duration? timeout = const Duration(seconds: 30),
   }) async {
-    return _implicitWait(
+    final result = await _implicitWait(
       duration: duration,
       timeout: timeout,
       force: true,
     );
+
+    return result;
   }
 
   Future<int> _implicitWait({
@@ -39,11 +41,13 @@ class WidgetTesterAppDriverAdapter
   }) async {
     if (waitImplicitlyAfterAction || force == true) {
       try {
-        return await nativeDriver.pumpAndSettle(
+        final result = await nativeDriver.pumpAndSettle(
           duration ?? const Duration(milliseconds: 100),
           EnginePhase.sendSemanticsUpdate,
           timeout ?? const Duration(seconds: 30),
         );
+
+        return result;
       } catch (_) {
         return 0;
       }
@@ -68,7 +72,7 @@ class WidgetTesterAppDriverAdapter
     }
   }
 
-  Future<List<int>> screenshotOnAndroid() {
+  Future<List<int>> screenshotOnAndroid() async {
     RenderObject? renderObject = binding.renderViewElement?.renderObject;
     if (renderObject != null) {
       while (!renderObject!.isRepaintBoundary) {
@@ -76,9 +80,13 @@ class WidgetTesterAppDriverAdapter
         assert(renderObject != null);
       }
 
+      if (renderObject.debugNeedsPaint) {
+        await Future.delayed(const Duration(milliseconds: 100));
+      }
+
       final layer = renderObject.debugLayer as OffsetLayer;
 
-      return layer
+      return await layer
           .toImage(renderObject.paintBounds)
           .then((value) => value.toByteData(format: ui.ImageByteFormat.png))
           .then((value) => value!.buffer.asUint8List());
@@ -105,7 +113,7 @@ class WidgetTesterAppDriverAdapter
 
         return await screenshotOnAndroid();
       } else {
-        return binding.takeScreenshot(name);
+        return await binding.takeScreenshot(name);
       }
     }
   }

lib/src/flutter/code_generation/generators/gherkin_suite_test_generator.dart

@@ -34,11 +34,13 @@ class _CustomGherkinIntegrationTestRunner extends GherkinIntegrationTestRunner {
     required StartAppFn appMainFunction,
     required Timeout scenarioExecutionTimeout,
     AppLifecyclePumpHandlerFn? appLifecyclePumpHandler,
+    LiveTestWidgetsFlutterBindingFramePolicy? framePolicy,
   }) : super(
           configuration: configuration,
           appMainFunction: appMainFunction,
           scenarioExecutionTimeout: scenarioExecutionTimeout,
           appLifecyclePumpHandler: appLifecyclePumpHandler,
+          framePolicy: framePolicy,
         );
 
   @override
@@ -54,12 +56,14 @@ void executeTestSuite({
   required StartAppFn appMainFunction,
   Timeout scenarioExecutionTimeout = const Timeout(const Duration(minutes: 10)),
   AppLifecyclePumpHandlerFn? appLifecyclePumpHandler,
+  LiveTestWidgetsFlutterBindingFramePolicy? framePolicy,
 }) {
   _CustomGherkinIntegrationTestRunner(
     configuration: configuration,
     appMainFunction: appMainFunction,
     appLifecyclePumpHandler: appLifecyclePumpHandler,
     scenarioExecutionTimeout: scenarioExecutionTimeout,
+    framePolicy: framePolicy,
   ).run();
 }
 ''';

lib/src/flutter/runners/gherkin_integration_test_runner.dart

@@ -38,6 +38,7 @@ abstract class GherkinIntegrationTestRunner {
   final StartAppFn appMainFunction;
   final AppLifecyclePumpHandlerFn? appLifecyclePumpHandler;
   final Timeout scenarioExecutionTimeout;
+  final LiveTestWidgetsFlutterBindingFramePolicy? framePolicy;
   final AggregatedReporter _reporter = AggregatedReporter();
 
   late final Iterable<ExecutableStep>? _executableSteps;
@@ -47,7 +48,6 @@ abstract class GherkinIntegrationTestRunner {
 
   AggregatedReporter get reporter => _reporter;
   Hook get hook => _hook!;
-  LiveTestWidgetsFlutterBindingFramePolicy? get framePolicy => null;
 
   /// A Gherkin test runner that uses [WidgetTester] to instrument the app under test.
   ///
@@ -64,6 +64,7 @@ abstract class GherkinIntegrationTestRunner {
     required this.appMainFunction,
     required this.scenarioExecutionTimeout,
     this.appLifecyclePumpHandler,
+    this.framePolicy,
   }) {
     configuration.prepare();
     _registerReporters(configuration.reporters);
@@ -79,8 +80,7 @@ abstract class GherkinIntegrationTestRunner {
   Future<void> run() async {
     _binding = IntegrationTestWidgetsFlutterBinding.ensureInitialized();
 
-    _binding.framePolicy =
-        framePolicy ?? LiveTestWidgetsFlutterBindingFramePolicy.benchmarkLive;
+    _binding.framePolicy = framePolicy ?? _binding.framePolicy;
 
     tearDownAll(
       () {

pubspec.yaml

@@ -1,6 +1,6 @@
 name: flutter_gherkin
 description: A Gherkin / Cucumber parser and test runner for Dart and Flutter
-version: 3.0.0-rc.14
+version: 3.0.0-rc.15
 homepage: https://github.com/jonsamwell/flutter_gherkin
 
 environment: