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PAINTROID-750 add integration tests
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‎test/integration/hand_tool_test.dart‎

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import 'package:flutter/material.dart';
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import 'package:flutter_localizations/flutter_localizations.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:integration_test/integration_test.dart';
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import 'package:paintroid/core/localization/app_localizations.dart';
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import 'package:paintroid/core/providers/object/device_service.dart';
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import 'package:paintroid/core/tools/tool_data.dart';
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import 'package:paintroid/ui/pages/workspace_page/workspace_page.dart';
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import 'package:paintroid/ui/theme/theme.dart';
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import '../utils/bottom_nav_bar_interactions.dart';
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import '../utils/interactive_viewer_interactions.dart';
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void main() {
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IntegrationTestWidgetsFlutterBinding.ensureInitialized();
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const String testIDStr = String.fromEnvironment('id', defaultValue: '-1');
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final testID = int.tryParse(testIDStr) ?? testIDStr;
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late Widget sut;
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setUp(() {
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final lightTheme = LightPaintroidThemeData();
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final darkTheme = DarkPaintroidThemeData();
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sut = ProviderScope(
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overrides: [
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IDeviceService.sizeProvider
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.overrideWith((ref) => Future.value(const Size(600, 600)))
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],
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child: PaintroidTheme(
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lightTheme: lightTheme,
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darkTheme: darkTheme,
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child: MaterialApp(
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theme: lightTheme.materialThemeData,
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darkTheme: darkTheme.materialThemeData,
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home: const WorkspacePage(),
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localizationsDelegates: const [
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AppLocalizations.delegate,
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GlobalMaterialLocalizations.delegate,
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],
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),
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),
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);
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});
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if (testID == -1 || testID == 0) {
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testWidgets(
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'[HAND_TOOL]: Pan sequentially in different directions and verify each step',
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(WidgetTester tester) async {
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await tester.pumpWidget(sut);
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await tester.pumpAndSettle();
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final bottomNavBarInteractions = BottomNavBarInteractions(tester);
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final interactiveViewerInteractions =
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InterActiveViewerInteractions(tester);
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await bottomNavBarInteractions.selectTool(ToolData.HAND);
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await interactiveViewerInteractions.panAndVerify(const Offset(100, 0));
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await interactiveViewerInteractions.panAndVerify(const Offset(0, 100));
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await interactiveViewerInteractions.panAndVerify(const Offset(-100, 0));
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await interactiveViewerInteractions.panAndVerify(const Offset(0, -100));
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});
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}
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if (testID == -1 || testID == 1) {
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testWidgets('[HAND_TOOL]: Tiny pans in different directions',
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(WidgetTester tester) async {
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await tester.pumpWidget(sut);
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await tester.pumpAndSettle();
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final bottomNavBarInteractions = BottomNavBarInteractions(tester);
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final interactiveViewerInteractions =
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InterActiveViewerInteractions(tester);
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await bottomNavBarInteractions.selectTool(ToolData.HAND);
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await interactiveViewerInteractions.panAndVerify(const Offset(1, 0));
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await interactiveViewerInteractions.panAndVerify(const Offset(0, 1));
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await interactiveViewerInteractions.panAndVerify(const Offset(-1, 0));
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await interactiveViewerInteractions.panAndVerify(const Offset(0, -1));
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});
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}
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if (testID == -1 || testID == 2) {
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testWidgets(
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'[HAND_TOOL]: Pan, switch tool, switch back to Hand, and continue panning',
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(WidgetTester tester) async {
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await tester.pumpWidget(sut);
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await tester.pumpAndSettle();
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final bottomNavBarInteractions = BottomNavBarInteractions(tester);
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final interactiveViewerInteractions =
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InterActiveViewerInteractions(tester);
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await bottomNavBarInteractions.selectTool(ToolData.HAND);
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await interactiveViewerInteractions.panAndVerify(const Offset(50, 50));
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await bottomNavBarInteractions.selectTool(ToolData.BRUSH);
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await tester.pumpAndSettle();
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await bottomNavBarInteractions.selectTool(ToolData.HAND);
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await tester.pumpAndSettle();
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await interactiveViewerInteractions.panAndVerify(const Offset(50, 50));
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});
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}
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if (testID == -1 || testID == 3) {
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testWidgets('[HAND_TOOL]: Pan by zero offset', (WidgetTester tester) async {
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await tester.pumpWidget(sut);
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await tester.pumpAndSettle();
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final bottomNavBarInteractions = BottomNavBarInteractions(tester);
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final interactiveViewerInteractions =
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InterActiveViewerInteractions(tester);
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await bottomNavBarInteractions.selectTool(ToolData.HAND);
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await interactiveViewerInteractions.panAndVerify(Offset.zero);
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});
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}
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if (testID == -1 || testID == 4) {
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testWidgets('[HAND_TOOL]: Select hand tool multiple times then pan',
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(WidgetTester tester) async {
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await tester.pumpWidget(sut);
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await tester.pumpAndSettle();
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final bottomNavBarInteractions = BottomNavBarInteractions(tester);
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final interactiveViewerInteractions =
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InterActiveViewerInteractions(tester);
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await bottomNavBarInteractions.selectTool(ToolData.HAND);
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await tester.pumpAndSettle();
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await bottomNavBarInteractions.selectTool(ToolData.HAND);
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await tester.pumpAndSettle();
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await interactiveViewerInteractions.panAndVerify(const Offset(30, -30));
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});
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}
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if (testID == -1 || testID == 5) {
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testWidgets('[HAND_TOOL]: Pan after zoom', (WidgetTester tester) async {
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await tester.pumpWidget(sut);
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await tester.pumpAndSettle();
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final bottomNavBarInteractions = BottomNavBarInteractions(tester);
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final interactiveViewerInteractions =
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InterActiveViewerInteractions(tester);
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await bottomNavBarInteractions.selectTool(ToolData.HAND);
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final ivFinder = find.byType(InteractiveViewer);
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expect(ivFinder, findsOneWidget,
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reason: 'InteractiveViewer should be present');
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InteractiveViewer interactiveViewer = tester.widget(ivFinder);
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TransformationController controller =
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interactiveViewer.transformationController!;
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final initialMatrixBeforeZoom = Matrix4.copy(controller.value);
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final initialTranslation = initialMatrixBeforeZoom.getTranslation();
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const double zoomFactor = 2.0;
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controller.value = Matrix4.identity()
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..scale(zoomFactor)
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..translate(initialTranslation.x, initialTranslation.y);
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await tester.pumpAndSettle();
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expect(controller.value[0], closeTo(zoomFactor, 0.001),
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reason: 'X scale should be zoomFactor');
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expect(controller.value[5], closeTo(zoomFactor, 0.001),
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reason: 'Y scale should be zoomFactor');
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await interactiveViewerInteractions.panAndVerify(const Offset(50, 50));
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});
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}
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}

‎test/utils/interactive_viewer_interactions.dart‎

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final initialMatrix = controller.value;
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await _tester.drag(finder, const Offset(-50, 50));
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await _tester.drag(finder, offset);
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await _tester.pumpAndSettle();
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double expectedX = initialMatrix.getTranslation().x - 50;
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double expectedY = initialMatrix.getTranslation().y + 50;
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double expectedX = initialMatrix.getTranslation().x + offset.dx;
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double expectedY = initialMatrix.getTranslation().y + offset.dy;
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expect(controller.value.getTranslation().x, closeTo(expectedX, epsilon));
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expect(controller.value.getTranslation().y, closeTo(expectedY, epsilon));

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