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PAINTROID-751: Write Integration tests for EraserTool (Catrobat#100)
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‎test/integration/eraser_tool_test.dart‎

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import 'package:flutter/material.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/app.dart';
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import 'package:paintroid/core/tools/tool_data.dart';
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import '../utils/test_utils.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(() async {
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sut = ProviderScope(
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child: App(
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showOnboardingPage: false,
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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('[ERASER_TOOL]: erase one point ', (WidgetTester tester) async {
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UIInteraction.initialize(tester);
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await tester.pumpWidget(sut);
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await UIInteraction.createNewImage();
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UIInteraction.setColor(Colors.black);
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await UIInteraction.selectTool(ToolData.BRUSH.name);
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var color = await UIInteraction.getPixelColor(
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CanvasPosition.centerX,
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CanvasPosition.centerY,
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);
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expect(color, Colors.transparent);
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await UIInteraction.tapAt(CanvasPosition.center);
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color = await UIInteraction.getPixelColor(
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CanvasPosition.centerX, CanvasPosition.centerY);
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expect(color, Colors.black);
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await UIInteraction.selectTool(ToolData.ERASER.name);
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await UIInteraction.tapAt(CanvasPosition.center);
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color = await UIInteraction.getPixelColor(
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CanvasPosition.centerX, CanvasPosition.centerY);
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expect(color, Colors.transparent);
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});
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}
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if (testID == -1 || testID == 1) {
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testWidgets('[ERASER_TOOL]: eraser erases multiple points',
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(WidgetTester tester) async {
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UIInteraction.initialize(tester);
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await tester.pumpWidget(sut);
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await UIInteraction.createNewImage();
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UIInteraction.setColor(Colors.black);
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await UIInteraction.selectTool(ToolData.BRUSH.name);
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await UIInteraction.tapAt(CanvasPosition.center);
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await UIInteraction.tapAt(CanvasPosition.topCenter);
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await UIInteraction.tapAt(CanvasPosition.bottomCenter);
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var color = await UIInteraction.getPixelColor(
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CanvasPosition.centerX, CanvasPosition.centerY);
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expect(color, Colors.black);
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color = await UIInteraction.getPixelColor(
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CanvasPosition.centerX, CanvasPosition.top);
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expect(color, Colors.black);
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color = await UIInteraction.getPixelColor(
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CanvasPosition.centerX, CanvasPosition.bottom);
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expect(color, Colors.black);
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await UIInteraction.selectTool(ToolData.ERASER.name);
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await UIInteraction.tapAt(CanvasPosition.center);
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color = await UIInteraction.getPixelColor(
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CanvasPosition.centerX, CanvasPosition.centerY);
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expect(color, Colors.transparent);
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color = await UIInteraction.getPixelColor(
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CanvasPosition.centerX, CanvasPosition.top);
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expect(color, Colors.black);
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color = await UIInteraction.getPixelColor(
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CanvasPosition.centerX, CanvasPosition.bottom);
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expect(color, Colors.black);
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});
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}
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if (testID == -1 || testID == 2) {
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testWidgets('[ERASER_TOOL]: eraser undo and redo functionality',
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(WidgetTester tester) async {
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UIInteraction.initialize(tester);
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await tester.pumpWidget(sut);
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await UIInteraction.createNewImage();
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UIInteraction.setColor(Colors.black);
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await UIInteraction.selectTool(ToolData.BRUSH.name);
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await UIInteraction.tapAt(CanvasPosition.center);
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var color = await UIInteraction.getPixelColor(
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CanvasPosition.centerX, CanvasPosition.centerY);
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expect(color, Colors.black);
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await UIInteraction.selectTool(ToolData.ERASER.name);
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await UIInteraction.tapAt(CanvasPosition.center);
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color = await UIInteraction.getPixelColor(
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CanvasPosition.centerX, CanvasPosition.centerY);
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expect(color, Colors.transparent);
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await UIInteraction.clickUndo();
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color = await UIInteraction.getPixelColor(
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CanvasPosition.centerX, CanvasPosition.centerY);
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expect(color, Colors.black);
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await UIInteraction.clickRedo();
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color = await UIInteraction.getPixelColor(
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CanvasPosition.centerX, CanvasPosition.centerY);
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expect(color, Colors.transparent);
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});
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}
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if (testID == -1 || testID == 3) {
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testWidgets('[ERASER_TOOL]: eraser does not affect empty canvas',
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(WidgetTester tester) async {
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UIInteraction.initialize(tester);
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await tester.pumpWidget(sut);
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await UIInteraction.createNewImage();
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await UIInteraction.selectTool(ToolData.ERASER.name);
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var color = await UIInteraction.getPixelColor(
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CanvasPosition.centerX, CanvasPosition.centerY);
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expect(color, Colors.transparent);
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await UIInteraction.tapAt(CanvasPosition.center);
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color = await UIInteraction.getPixelColor(
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CanvasPosition.centerX, CanvasPosition.centerY);
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expect(color, Colors.transparent);
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});
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}
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if (testID == -1 || testID == 4) {
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testWidgets('[ERASER_TOOL]: eraser erases with drag gesture',
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(WidgetTester tester) async {
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UIInteraction.initialize(tester);
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await tester.pumpWidget(sut);
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await UIInteraction.createNewImage();
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UIInteraction.setColor(Colors.black);
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await UIInteraction.selectTool(ToolData.BRUSH.name);
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await UIInteraction.dragFromTo(
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CanvasPosition.centerLeft, CanvasPosition.centerRight);
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var color = await UIInteraction.getPixelColor(
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CanvasPosition.centerX, CanvasPosition.centerY);
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expect(color, Colors.black);
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await UIInteraction.selectTool(ToolData.ERASER.name);
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await UIInteraction.dragFromTo(
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CanvasPosition.center, CanvasPosition.centerRight);
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color = await UIInteraction.getPixelColor(
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CanvasPosition.centerX, CanvasPosition.centerY);
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expect(color, Colors.transparent);
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color = await UIInteraction.getPixelColor(
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CanvasPosition.halfwayLeft, CanvasPosition.centerY);
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expect(color, Colors.black);
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});
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}
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}

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