packages/flutter_test/lib/src/window.dart - mirrors/flutter - Git at Google

 // Copyright 2014 The Flutter Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 import 'dart:typed_data' show ByteData;
 import 'dart:ui' as ui hide window;

 /// [SingletonFlutterWindow] that wraps another [SingletonFlutterWindow] and
 /// allows faking of some properties for testing purposes.
 ///
 /// Tests for certain widgets, e.g., [MaterialApp], might require faking certain
 /// properties of a [SingletonFlutterWindow]. [TestWindow] facilitates the
 /// faking of these properties by overriding the properties of a real
 /// [SingletonFlutterWindow] with desired fake values. The binding used within
 /// tests, [TestWidgetsFlutterBinding], contains a [TestWindow] that is used by
 /// all tests.
 ///
 /// ## Sample Code
 ///
 /// A test can utilize a [TestWindow] in the following way:
 ///
 /// ```dart
 /// testWidgets('your test name here', (WidgetTester tester) async {
 ///   // Retrieve the TestWidgetsFlutterBinding.
 ///   final TestWidgetsFlutterBinding testBinding = tester.binding;
 ///
 ///   // Fake the desired properties of the TestWindow. All code running
 ///   // within this test will perceive the following fake text scale
 ///   // factor as the real text scale factor of the window.
 ///   testBinding.window.textScaleFactorFakeValue = 2.5;
 ///
 ///   // Test code that depends on text scale factor here.
 /// });
 /// ```
 ///
 /// The [TestWidgetsFlutterBinding] is recreated for each test and
 /// therefore any fake values defined in one test will not persist
 /// to the next.
 ///
 /// If a test needs to override a real [SingletonFlutterWindow] property and
 /// then later return to using the real [SingletonFlutterWindow] property,
 /// [TestWindow] provides methods to clear each individual test value, e.g.,
 /// [clearLocaleTestValue()].
 ///
 /// To clear all fake test values in a [TestWindow], consider using
 /// [clearAllTestValues()].
 class TestWindow implements ui.SingletonFlutterWindow {
   /// Constructs a [TestWindow] that defers all behavior to the given
   /// [dart:ui.SingletonFlutterWindow] unless explicitly overridden for test purposes.
   TestWindow({
     required ui.SingletonFlutterWindow window,
   }) : _window = window;

   /// The [dart:ui.SingletonFlutterWindow] that is wrapped by this [TestWindow].
   final ui.SingletonFlutterWindow _window;

   @override
   double get devicePixelRatio => _devicePixelRatio ?? _window.devicePixelRatio;
   double? _devicePixelRatio;
   /// Hides the real device pixel ratio and reports the given [devicePixelRatio]
   /// instead.
   set devicePixelRatioTestValue(double devicePixelRatio) {
     _devicePixelRatio = devicePixelRatio;
     onMetricsChanged?.call();
   }
   /// Deletes any existing test device pixel ratio and returns to using the real
   /// device pixel ratio.
   void clearDevicePixelRatioTestValue() {
     _devicePixelRatio = null;
     onMetricsChanged?.call();
   }

   @override
   ui.Size get physicalSize => _physicalSizeTestValue ?? _window.physicalSize;
   ui.Size? _physicalSizeTestValue;
   /// Hides the real physical size and reports the given [physicalSizeTestValue]
   /// instead.
   set physicalSizeTestValue (ui.Size physicalSizeTestValue) {
     _physicalSizeTestValue = physicalSizeTestValue;
     onMetricsChanged?.call();
   }
   /// Deletes any existing test physical size and returns to using the real
   /// physical size.
   void clearPhysicalSizeTestValue() {
     _physicalSizeTestValue = null;
     onMetricsChanged?.call();
   }

   @override
   ui.WindowPadding get viewInsets => _viewInsetsTestValue ??  _window.viewInsets;
   ui.WindowPadding? _viewInsetsTestValue;
   /// Hides the real view insets and reports the given [viewInsetsTestValue]
   /// instead.
   set viewInsetsTestValue(ui.WindowPadding viewInsetsTestValue) {
     _viewInsetsTestValue = viewInsetsTestValue;
     onMetricsChanged?.call();
   }
   /// Deletes any existing test view insets and returns to using the real view
   /// insets.
   void clearViewInsetsTestValue() {
     _viewInsetsTestValue = null;
     onMetricsChanged?.call();
   }

   @override
   ui.WindowPadding get viewPadding => _viewPaddingTestValue ?? _window.padding;
   ui.WindowPadding? _viewPaddingTestValue;
   /// Hides the real view padding and reports the given [paddingTestValue]
   /// instead.
   set viewPaddingTestValue(ui.WindowPadding viewPaddingTestValue) {
     _viewPaddingTestValue = viewPaddingTestValue;
     onMetricsChanged?.call();
   }
   /// Deletes any existing test view padding and returns to using the real
   /// viewPadding.
   void clearViewPaddingTestValue() {
     _viewPaddingTestValue = null;
     onMetricsChanged?.call();
   }

   @override
   ui.WindowPadding get padding => _paddingTestValue ?? _window.padding;
   ui.WindowPadding? _paddingTestValue;
   /// Hides the real padding and reports the given [paddingTestValue] instead.
   set paddingTestValue(ui.WindowPadding paddingTestValue) {
     _paddingTestValue = paddingTestValue;
     onMetricsChanged?.call();
   }
   /// Deletes any existing test padding and returns to using the real padding.
   void clearPaddingTestValue() {
     _paddingTestValue = null;
     onMetricsChanged?.call();
   }

   @override
   ui.WindowPadding get systemGestureInsets => _systemGestureInsetsTestValue ?? _window.systemGestureInsets;
   ui.WindowPadding? _systemGestureInsetsTestValue;
   /// Hides the real system gesture insets and reports the given [systemGestureInsetsTestValue] instead.
   set systemGestureInsetsTestValue(ui.WindowPadding systemGestureInsetsTestValue) {
     _systemGestureInsetsTestValue = systemGestureInsetsTestValue;
     onMetricsChanged?.call();
   }
   /// Deletes any existing test system gesture insets and returns to using the real system gesture insets.
   void clearSystemGestureInsetsTestValue() {
     _systemGestureInsetsTestValue = null;
     onMetricsChanged?.call();
   }

   @override
   ui.VoidCallback? get onMetricsChanged => platformDispatcher.onMetricsChanged;
   @override
   set onMetricsChanged(ui.VoidCallback? callback) {
     platformDispatcher.onMetricsChanged = callback;
   }

   @override
   ui.Locale get locale => _localeTestValue ?? platformDispatcher.locale;
   ui.Locale? _localeTestValue;
   /// Hides the real locale and reports the given [localeTestValue] instead.
   set localeTestValue(ui.Locale localeTestValue) {
     _localeTestValue = localeTestValue;
     onLocaleChanged?.call();
   }
   /// Deletes any existing test locale and returns to using the real locale.
   void clearLocaleTestValue() {
     _localeTestValue = null;
     onLocaleChanged?.call();
   }

   @override
   List<ui.Locale> get locales => _localesTestValue ?? platformDispatcher.locales;
   List<ui.Locale>? _localesTestValue;
   /// Hides the real locales and reports the given [localesTestValue] instead.
   set localesTestValue(List<ui.Locale> localesTestValue) {
     _localesTestValue = localesTestValue;
     onLocaleChanged?.call();
   }
   /// Deletes any existing test locales and returns to using the real locales.
   void clearLocalesTestValue() {
     _localesTestValue = null;
     onLocaleChanged?.call();
   }

   @override
   ui.VoidCallback? get onLocaleChanged => platformDispatcher.onLocaleChanged;
   @override
   set onLocaleChanged(ui.VoidCallback? callback) {
     platformDispatcher.onLocaleChanged = callback;
   }

   @override
   String get initialLifecycleState => _initialLifecycleStateTestValue;
   String _initialLifecycleStateTestValue = '';
   /// Sets a faked initialLifecycleState for testing.
   set initialLifecycleStateTestValue(String state) {
     _initialLifecycleStateTestValue = state;
   }

   @override
   double get textScaleFactor => _textScaleFactorTestValue ?? platformDispatcher.textScaleFactor;
   double? _textScaleFactorTestValue;
   /// Hides the real text scale factor and reports the given
   /// [textScaleFactorTestValue] instead.
   set textScaleFactorTestValue(double textScaleFactorTestValue) {
     _textScaleFactorTestValue = textScaleFactorTestValue;
     onTextScaleFactorChanged?.call();
   }
   /// Deletes any existing test text scale factor and returns to using the real
   /// text scale factor.
   void clearTextScaleFactorTestValue() {
     _textScaleFactorTestValue = null;
     onTextScaleFactorChanged?.call();
   }

   @override
   ui.Brightness get platformBrightness => _platformBrightnessTestValue ?? platformDispatcher.platformBrightness;
   ui.Brightness? _platformBrightnessTestValue;
   @override
   ui.VoidCallback? get onPlatformBrightnessChanged => platformDispatcher.onPlatformBrightnessChanged;
   @override
   set onPlatformBrightnessChanged(ui.VoidCallback? callback) {
     platformDispatcher.onPlatformBrightnessChanged = callback;
   }
   /// Hides the real text scale factor and reports the given
   /// [platformBrightnessTestValue] instead.
   set platformBrightnessTestValue(ui.Brightness platformBrightnessTestValue) {
     _platformBrightnessTestValue = platformBrightnessTestValue;
     onPlatformBrightnessChanged?.call();
   }
   /// Deletes any existing test platform brightness and returns to using the
   /// real platform brightness.
   void clearPlatformBrightnessTestValue() {
     _platformBrightnessTestValue = null;
     onPlatformBrightnessChanged?.call();
   }

   @override
   bool get alwaysUse24HourFormat => _alwaysUse24HourFormatTestValue ?? platformDispatcher.alwaysUse24HourFormat;
   bool? _alwaysUse24HourFormatTestValue;
   /// Hides the real clock format and reports the given
   /// [alwaysUse24HourFormatTestValue] instead.
   set alwaysUse24HourFormatTestValue(bool alwaysUse24HourFormatTestValue) {
     _alwaysUse24HourFormatTestValue = alwaysUse24HourFormatTestValue;
   }
   /// Deletes any existing test clock format and returns to using the real clock
   /// format.
   void clearAlwaysUse24HourTestValue() {
     _alwaysUse24HourFormatTestValue = null;
   }

   @override
   ui.VoidCallback? get onTextScaleFactorChanged => platformDispatcher.onTextScaleFactorChanged;
   @override
   set onTextScaleFactorChanged(ui.VoidCallback? callback) {
     platformDispatcher.onTextScaleFactorChanged = callback;
   }

   @override
   ui.FrameCallback? get onBeginFrame => platformDispatcher.onBeginFrame;
   @override
   set onBeginFrame(ui.FrameCallback? callback) {
     platformDispatcher.onBeginFrame = callback;
   }

   @override
   ui.VoidCallback? get onDrawFrame => platformDispatcher.onDrawFrame;
   @override
   set onDrawFrame(ui.VoidCallback? callback) {
     platformDispatcher.onDrawFrame = callback;
   }

   @override
   ui.TimingsCallback? get onReportTimings => platformDispatcher.onReportTimings;
   @override
   set onReportTimings(ui.TimingsCallback? callback) {
     platformDispatcher.onReportTimings = callback;
   }

   @override
   ui.PointerDataPacketCallback? get onPointerDataPacket => platformDispatcher.onPointerDataPacket;
   @override
   set onPointerDataPacket(ui.PointerDataPacketCallback? callback) {
     platformDispatcher.onPointerDataPacket = callback;
   }

   @override
   String get defaultRouteName => _defaultRouteNameTestValue ?? platformDispatcher.defaultRouteName;
   String? _defaultRouteNameTestValue;
   /// Hides the real default route name and reports the given
   /// [defaultRouteNameTestValue] instead.
   set defaultRouteNameTestValue(String defaultRouteNameTestValue) {
     _defaultRouteNameTestValue = defaultRouteNameTestValue;
   }
   /// Deletes any existing test default route name and returns to using the real
   /// default route name.
   void clearDefaultRouteNameTestValue() {
     _defaultRouteNameTestValue = null;
   }

   @override
   void scheduleFrame() {
     platformDispatcher.scheduleFrame();
   }

   @override
   void render(ui.Scene scene) {
     _window.render(scene);
   }

   @override
   bool get semanticsEnabled => _semanticsEnabledTestValue ?? platformDispatcher.semanticsEnabled;
   bool? _semanticsEnabledTestValue;
   /// Hides the real semantics enabled and reports the given
   /// [semanticsEnabledTestValue] instead.
   set semanticsEnabledTestValue(bool semanticsEnabledTestValue) {
     _semanticsEnabledTestValue = semanticsEnabledTestValue;
     onSemanticsEnabledChanged?.call();
   }
   /// Deletes any existing test semantics enabled and returns to using the real
   /// semantics enabled.
   void clearSemanticsEnabledTestValue() {
     _semanticsEnabledTestValue = null;
     onSemanticsEnabledChanged?.call();
   }

   @override
   ui.VoidCallback? get onSemanticsEnabledChanged => platformDispatcher.onSemanticsEnabledChanged;
   @override
   set onSemanticsEnabledChanged(ui.VoidCallback? callback) {
     platformDispatcher.onSemanticsEnabledChanged = callback;
   }

   @override
   ui.SemanticsActionCallback? get onSemanticsAction => platformDispatcher.onSemanticsAction;
   @override
   set onSemanticsAction(ui.SemanticsActionCallback? callback) {
     platformDispatcher.onSemanticsAction = callback;
   }

   @override
   ui.AccessibilityFeatures get accessibilityFeatures => _accessibilityFeaturesTestValue ?? platformDispatcher.accessibilityFeatures;
   ui.AccessibilityFeatures? _accessibilityFeaturesTestValue;
   /// Hides the real accessibility features and reports the given
   /// [accessibilityFeaturesTestValue] instead.
   set accessibilityFeaturesTestValue(ui.AccessibilityFeatures accessibilityFeaturesTestValue) {
     _accessibilityFeaturesTestValue = accessibilityFeaturesTestValue;
     onAccessibilityFeaturesChanged?.call();
   }
   /// Deletes any existing test accessibility features and returns to using the
   /// real accessibility features.
   void clearAccessibilityFeaturesTestValue() {
     _accessibilityFeaturesTestValue = null;
     onAccessibilityFeaturesChanged?.call();
   }

   @override
   ui.VoidCallback? get onAccessibilityFeaturesChanged => platformDispatcher.onAccessibilityFeaturesChanged;
   @override
   set onAccessibilityFeaturesChanged(ui.VoidCallback? callback) {
     platformDispatcher.onAccessibilityFeaturesChanged = callback;
   }

   @override
   void updateSemantics(ui.SemanticsUpdate update) {
     platformDispatcher.updateSemantics(update);
   }

   @override
   void setIsolateDebugName(String name) {
     platformDispatcher.setIsolateDebugName(name);
   }

   @override
   void sendPlatformMessage(
     String name,
     ByteData? data,
     ui.PlatformMessageResponseCallback? callback,
   ) {
     platformDispatcher.sendPlatformMessage(name, data, callback);
   }

   @override
   ui.PlatformMessageCallback? get onPlatformMessage => platformDispatcher.onPlatformMessage;
   @override
   set onPlatformMessage(ui.PlatformMessageCallback? callback) {
     platformDispatcher.onPlatformMessage = callback;
   }

   @override
   ui.PlatformDispatcher get platformDispatcher => _window.platformDispatcher;

   /// Delete any test value properties that have been set on this [TestWindow]
   /// and return to reporting the real [SingletonFlutterWindow] values for all
   /// [SingletonFlutterWindow] properties.
   ///
   /// If desired, clearing of properties can be done on an individual basis,
   /// e.g., [clearLocaleTestValue()].
   void clearAllTestValues() {
     clearAccessibilityFeaturesTestValue();
     clearAlwaysUse24HourTestValue();
     clearDefaultRouteNameTestValue();
     clearDevicePixelRatioTestValue();
     clearPlatformBrightnessTestValue();
     clearLocaleTestValue();
     clearLocalesTestValue();
     clearPaddingTestValue();
     clearPhysicalSizeTestValue();
     clearSemanticsEnabledTestValue();
     clearTextScaleFactorTestValue();
     clearViewInsetsTestValue();
   }

   /// This gives us some grace time when the dart:ui side adds something to
   /// Window, and makes things easier when we do rolls to give us time to catch
   /// up.
   @override
   dynamic noSuchMethod(Invocation invocation) {
     return null;
   }
 }
	// Copyright 2014 The Flutter Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	import 'dart:typed_data' show ByteData;
	import 'dart:ui' as ui hide window;

	/// [SingletonFlutterWindow] that wraps another [SingletonFlutterWindow] and
	/// allows faking of some properties for testing purposes.
	///
	/// Tests for certain widgets, e.g., [MaterialApp], might require faking certain
	/// properties of a [SingletonFlutterWindow]. [TestWindow] facilitates the
	/// faking of these properties by overriding the properties of a real
	/// [SingletonFlutterWindow] with desired fake values. The binding used within
	/// tests, [TestWidgetsFlutterBinding], contains a [TestWindow] that is used by
	/// all tests.
	///
	/// ## Sample Code
	///
	/// A test can utilize a [TestWindow] in the following way:
	///
	/// ```dart
	/// testWidgets('your test name here', (WidgetTester tester) async {
	/// // Retrieve the TestWidgetsFlutterBinding.
	/// final TestWidgetsFlutterBinding testBinding = tester.binding;
	///
	/// // Fake the desired properties of the TestWindow. All code running
	/// // within this test will perceive the following fake text scale
	/// // factor as the real text scale factor of the window.
	/// testBinding.window.textScaleFactorFakeValue = 2.5;
	///
	/// // Test code that depends on text scale factor here.
	/// });
	/// ```
	///
	/// The [TestWidgetsFlutterBinding] is recreated for each test and
	/// therefore any fake values defined in one test will not persist
	/// to the next.
	///
	/// If a test needs to override a real [SingletonFlutterWindow] property and
	/// then later return to using the real [SingletonFlutterWindow] property,
	/// [TestWindow] provides methods to clear each individual test value, e.g.,
	/// [clearLocaleTestValue()].
	///
	/// To clear all fake test values in a [TestWindow], consider using
	/// [clearAllTestValues()].
	class TestWindow implements ui.SingletonFlutterWindow {
	/// Constructs a [TestWindow] that defers all behavior to the given
	/// [dart:ui.SingletonFlutterWindow] unless explicitly overridden for test purposes.
	TestWindow({
	required ui.SingletonFlutterWindow window,
	}) : _window = window;

	/// The [dart:ui.SingletonFlutterWindow] that is wrapped by this [TestWindow].
	final ui.SingletonFlutterWindow _window;

	@override
	double get devicePixelRatio => _devicePixelRatio ?? _window.devicePixelRatio;
	double? _devicePixelRatio;
	/// Hides the real device pixel ratio and reports the given [devicePixelRatio]
	/// instead.
	set devicePixelRatioTestValue(double devicePixelRatio) {
	_devicePixelRatio = devicePixelRatio;
	onMetricsChanged?.call();
	}
	/// Deletes any existing test device pixel ratio and returns to using the real
	/// device pixel ratio.
	void clearDevicePixelRatioTestValue() {
	_devicePixelRatio = null;
	onMetricsChanged?.call();
	}

	@override
	ui.Size get physicalSize => _physicalSizeTestValue ?? _window.physicalSize;
	ui.Size? _physicalSizeTestValue;
	/// Hides the real physical size and reports the given [physicalSizeTestValue]
	/// instead.
	set physicalSizeTestValue (ui.Size physicalSizeTestValue) {
	_physicalSizeTestValue = physicalSizeTestValue;
	onMetricsChanged?.call();
	}
	/// Deletes any existing test physical size and returns to using the real
	/// physical size.
	void clearPhysicalSizeTestValue() {
	_physicalSizeTestValue = null;
	onMetricsChanged?.call();
	}

	@override
	ui.WindowPadding get viewInsets => _viewInsetsTestValue ?? _window.viewInsets;
	ui.WindowPadding? _viewInsetsTestValue;
	/// Hides the real view insets and reports the given [viewInsetsTestValue]
	/// instead.
	set viewInsetsTestValue(ui.WindowPadding viewInsetsTestValue) {
	_viewInsetsTestValue = viewInsetsTestValue;
	onMetricsChanged?.call();
	}
	/// Deletes any existing test view insets and returns to using the real view
	/// insets.
	void clearViewInsetsTestValue() {
	_viewInsetsTestValue = null;
	onMetricsChanged?.call();
	}

	@override
	ui.WindowPadding get viewPadding => _viewPaddingTestValue ?? _window.padding;
	ui.WindowPadding? _viewPaddingTestValue;
	/// Hides the real view padding and reports the given [paddingTestValue]
	/// instead.
	set viewPaddingTestValue(ui.WindowPadding viewPaddingTestValue) {
	_viewPaddingTestValue = viewPaddingTestValue;
	onMetricsChanged?.call();
	}
	/// Deletes any existing test view padding and returns to using the real
	/// viewPadding.
	void clearViewPaddingTestValue() {
	_viewPaddingTestValue = null;
	onMetricsChanged?.call();
	}

	@override
	ui.WindowPadding get padding => _paddingTestValue ?? _window.padding;
	ui.WindowPadding? _paddingTestValue;
	/// Hides the real padding and reports the given [paddingTestValue] instead.
	set paddingTestValue(ui.WindowPadding paddingTestValue) {
	_paddingTestValue = paddingTestValue;
	onMetricsChanged?.call();
	}
	/// Deletes any existing test padding and returns to using the real padding.
	void clearPaddingTestValue() {
	_paddingTestValue = null;
	onMetricsChanged?.call();
	}

	@override
	ui.WindowPadding get systemGestureInsets => _systemGestureInsetsTestValue ?? _window.systemGestureInsets;
	ui.WindowPadding? _systemGestureInsetsTestValue;
	/// Hides the real system gesture insets and reports the given [systemGestureInsetsTestValue] instead.
	set systemGestureInsetsTestValue(ui.WindowPadding systemGestureInsetsTestValue) {
	_systemGestureInsetsTestValue = systemGestureInsetsTestValue;
	onMetricsChanged?.call();
	}
	/// Deletes any existing test system gesture insets and returns to using the real system gesture insets.
	void clearSystemGestureInsetsTestValue() {
	_systemGestureInsetsTestValue = null;
	onMetricsChanged?.call();
	}

	@override
	ui.VoidCallback? get onMetricsChanged => platformDispatcher.onMetricsChanged;
	@override
	set onMetricsChanged(ui.VoidCallback? callback) {
	platformDispatcher.onMetricsChanged = callback;
	}

	@override
	ui.Locale get locale => _localeTestValue ?? platformDispatcher.locale;
	ui.Locale? _localeTestValue;
	/// Hides the real locale and reports the given [localeTestValue] instead.
	set localeTestValue(ui.Locale localeTestValue) {
	_localeTestValue = localeTestValue;
	onLocaleChanged?.call();
	}
	/// Deletes any existing test locale and returns to using the real locale.
	void clearLocaleTestValue() {
	_localeTestValue = null;
	onLocaleChanged?.call();
	}

	@override
	List<ui.Locale> get locales => _localesTestValue ?? platformDispatcher.locales;
	List<ui.Locale>? _localesTestValue;
	/// Hides the real locales and reports the given [localesTestValue] instead.
	set localesTestValue(List<ui.Locale> localesTestValue) {
	_localesTestValue = localesTestValue;
	onLocaleChanged?.call();
	}
	/// Deletes any existing test locales and returns to using the real locales.
	void clearLocalesTestValue() {
	_localesTestValue = null;
	onLocaleChanged?.call();
	}

	@override
	ui.VoidCallback? get onLocaleChanged => platformDispatcher.onLocaleChanged;
	@override
	set onLocaleChanged(ui.VoidCallback? callback) {
	platformDispatcher.onLocaleChanged = callback;
	}

	@override
	String get initialLifecycleState => _initialLifecycleStateTestValue;
	String _initialLifecycleStateTestValue = '';
	/// Sets a faked initialLifecycleState for testing.
	set initialLifecycleStateTestValue(String state) {
	_initialLifecycleStateTestValue = state;
	}

	@override
	double get textScaleFactor => _textScaleFactorTestValue ?? platformDispatcher.textScaleFactor;
	double? _textScaleFactorTestValue;
	/// Hides the real text scale factor and reports the given
	/// [textScaleFactorTestValue] instead.
	set textScaleFactorTestValue(double textScaleFactorTestValue) {
	_textScaleFactorTestValue = textScaleFactorTestValue;
	onTextScaleFactorChanged?.call();
	}
	/// Deletes any existing test text scale factor and returns to using the real
	/// text scale factor.
	void clearTextScaleFactorTestValue() {
	_textScaleFactorTestValue = null;
	onTextScaleFactorChanged?.call();
	}

	@override
	ui.Brightness get platformBrightness => _platformBrightnessTestValue ?? platformDispatcher.platformBrightness;
	ui.Brightness? _platformBrightnessTestValue;
	@override
	ui.VoidCallback? get onPlatformBrightnessChanged => platformDispatcher.onPlatformBrightnessChanged;
	@override
	set onPlatformBrightnessChanged(ui.VoidCallback? callback) {
	platformDispatcher.onPlatformBrightnessChanged = callback;
	}
	/// Hides the real text scale factor and reports the given
	/// [platformBrightnessTestValue] instead.
	set platformBrightnessTestValue(ui.Brightness platformBrightnessTestValue) {
	_platformBrightnessTestValue = platformBrightnessTestValue;
	onPlatformBrightnessChanged?.call();
	}
	/// Deletes any existing test platform brightness and returns to using the
	/// real platform brightness.
	void clearPlatformBrightnessTestValue() {
	_platformBrightnessTestValue = null;
	onPlatformBrightnessChanged?.call();
	}

	@override
	bool get alwaysUse24HourFormat => _alwaysUse24HourFormatTestValue ?? platformDispatcher.alwaysUse24HourFormat;
	bool? _alwaysUse24HourFormatTestValue;
	/// Hides the real clock format and reports the given
	/// [alwaysUse24HourFormatTestValue] instead.
	set alwaysUse24HourFormatTestValue(bool alwaysUse24HourFormatTestValue) {
	_alwaysUse24HourFormatTestValue = alwaysUse24HourFormatTestValue;
	}
	/// Deletes any existing test clock format and returns to using the real clock
	/// format.
	void clearAlwaysUse24HourTestValue() {
	_alwaysUse24HourFormatTestValue = null;
	}

	@override
	ui.VoidCallback? get onTextScaleFactorChanged => platformDispatcher.onTextScaleFactorChanged;
	@override
	set onTextScaleFactorChanged(ui.VoidCallback? callback) {
	platformDispatcher.onTextScaleFactorChanged = callback;
	}

	@override
	ui.FrameCallback? get onBeginFrame => platformDispatcher.onBeginFrame;
	@override
	set onBeginFrame(ui.FrameCallback? callback) {
	platformDispatcher.onBeginFrame = callback;
	}

	@override
	ui.VoidCallback? get onDrawFrame => platformDispatcher.onDrawFrame;
	@override
	set onDrawFrame(ui.VoidCallback? callback) {
	platformDispatcher.onDrawFrame = callback;
	}

	@override
	ui.TimingsCallback? get onReportTimings => platformDispatcher.onReportTimings;
	@override
	set onReportTimings(ui.TimingsCallback? callback) {
	platformDispatcher.onReportTimings = callback;
	}

	@override
	ui.PointerDataPacketCallback? get onPointerDataPacket => platformDispatcher.onPointerDataPacket;
	@override
	set onPointerDataPacket(ui.PointerDataPacketCallback? callback) {
	platformDispatcher.onPointerDataPacket = callback;
	}

	@override
	String get defaultRouteName => _defaultRouteNameTestValue ?? platformDispatcher.defaultRouteName;
	String? _defaultRouteNameTestValue;
	/// Hides the real default route name and reports the given
	/// [defaultRouteNameTestValue] instead.
	set defaultRouteNameTestValue(String defaultRouteNameTestValue) {
	_defaultRouteNameTestValue = defaultRouteNameTestValue;
	}
	/// Deletes any existing test default route name and returns to using the real
	/// default route name.
	void clearDefaultRouteNameTestValue() {
	_defaultRouteNameTestValue = null;
	}

	@override
	void scheduleFrame() {
	platformDispatcher.scheduleFrame();
	}

	@override
	void render(ui.Scene scene) {
	_window.render(scene);
	}

	@override
	bool get semanticsEnabled => _semanticsEnabledTestValue ?? platformDispatcher.semanticsEnabled;
	bool? _semanticsEnabledTestValue;
	/// Hides the real semantics enabled and reports the given
	/// [semanticsEnabledTestValue] instead.
	set semanticsEnabledTestValue(bool semanticsEnabledTestValue) {
	_semanticsEnabledTestValue = semanticsEnabledTestValue;
	onSemanticsEnabledChanged?.call();
	}
	/// Deletes any existing test semantics enabled and returns to using the real
	/// semantics enabled.
	void clearSemanticsEnabledTestValue() {
	_semanticsEnabledTestValue = null;
	onSemanticsEnabledChanged?.call();
	}

	@override
	ui.VoidCallback? get onSemanticsEnabledChanged => platformDispatcher.onSemanticsEnabledChanged;
	@override
	set onSemanticsEnabledChanged(ui.VoidCallback? callback) {
	platformDispatcher.onSemanticsEnabledChanged = callback;
	}

	@override
	ui.SemanticsActionCallback? get onSemanticsAction => platformDispatcher.onSemanticsAction;
	@override
	set onSemanticsAction(ui.SemanticsActionCallback? callback) {
	platformDispatcher.onSemanticsAction = callback;
	}

	@override
	ui.AccessibilityFeatures get accessibilityFeatures => _accessibilityFeaturesTestValue ?? platformDispatcher.accessibilityFeatures;
	ui.AccessibilityFeatures? _accessibilityFeaturesTestValue;
	/// Hides the real accessibility features and reports the given
	/// [accessibilityFeaturesTestValue] instead.
	set accessibilityFeaturesTestValue(ui.AccessibilityFeatures accessibilityFeaturesTestValue) {
	_accessibilityFeaturesTestValue = accessibilityFeaturesTestValue;
	onAccessibilityFeaturesChanged?.call();
	}
	/// Deletes any existing test accessibility features and returns to using the
	/// real accessibility features.
	void clearAccessibilityFeaturesTestValue() {
	_accessibilityFeaturesTestValue = null;
	onAccessibilityFeaturesChanged?.call();
	}

	@override
	ui.VoidCallback? get onAccessibilityFeaturesChanged => platformDispatcher.onAccessibilityFeaturesChanged;
	@override
	set onAccessibilityFeaturesChanged(ui.VoidCallback? callback) {
	platformDispatcher.onAccessibilityFeaturesChanged = callback;
	}

	@override
	void updateSemantics(ui.SemanticsUpdate update) {
	platformDispatcher.updateSemantics(update);
	}

	@override
	void setIsolateDebugName(String name) {
	platformDispatcher.setIsolateDebugName(name);
	}

	@override
	void sendPlatformMessage(
	String name,
	ByteData? data,
	ui.PlatformMessageResponseCallback? callback,
	) {
	platformDispatcher.sendPlatformMessage(name, data, callback);
	}

	@override
	ui.PlatformMessageCallback? get onPlatformMessage => platformDispatcher.onPlatformMessage;
	@override
	set onPlatformMessage(ui.PlatformMessageCallback? callback) {
	platformDispatcher.onPlatformMessage = callback;
	}

	@override
	ui.PlatformDispatcher get platformDispatcher => _window.platformDispatcher;

	/// Delete any test value properties that have been set on this [TestWindow]
	/// and return to reporting the real [SingletonFlutterWindow] values for all
	/// [SingletonFlutterWindow] properties.
	///
	/// If desired, clearing of properties can be done on an individual basis,
	/// e.g., [clearLocaleTestValue()].
	void clearAllTestValues() {
	clearAccessibilityFeaturesTestValue();
	clearAlwaysUse24HourTestValue();
	clearDefaultRouteNameTestValue();
	clearDevicePixelRatioTestValue();
	clearPlatformBrightnessTestValue();
	clearLocaleTestValue();
	clearLocalesTestValue();
	clearPaddingTestValue();
	clearPhysicalSizeTestValue();
	clearSemanticsEnabledTestValue();
	clearTextScaleFactorTestValue();
	clearViewInsetsTestValue();
	}

	/// This gives us some grace time when the dart:ui side adds something to
	/// Window, and makes things easier when we do rolls to give us time to catch
	/// up.
	@override
	dynamic noSuchMethod(Invocation invocation) {
	return null;
	}
	}