Merge pull request #22 from samuelematias/lesson22

Lesson 22: Using golden files to verify pixel-perfect widgets
samuelematias · Dec 2, 2020 · e5904e6 · e5904e6
2 parents 46698b1 + cdc0886
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diff --git a/README.md b/README.md
@@ -47,6 +47,8 @@ Calculator - [Caster.IO](https://caster.io) project to showcase testing techniqu
 
 [Lesson 21: Verifying interactions with mockito](https://caster.io/lessons/lesson-21-verifying-interactions-with-mockito) 👉🏾 [Branch](https://github.com/samuelematias/calculator_app/tree/lesson21)
 
+[Lesson 22: Using golden files to verify pixel-perfect widgets](https://caster.io/lessons/lesson-22-using-golden-files-to-verify-pixel-perfect-widgets) 👉🏾 [Branch](https://github.com/samuelematias/calculator_app/tree/lesson22)
+
 ## License
 
 ```

diff --git a/test/calculator_app_test.dart b/test/calculator_app_test.dart
@@ -5,6 +5,14 @@ import 'package:flutter_test/flutter_test.dart';
 
 void main() {
   group('CalculatorApp', () {
+    testWidgets('matches golden file', (tester) async {
+      await tester.pumpWidget(CalculatorApp());
+      await expectLater(
+        find.byType(CalculatorApp),
+        matchesGoldenFile('goldens/calculator_app.png'),
+      );
+    });
+
     testWidgets('renders four widgets of type TwoDigitOperation',
         (WidgetTester tester) async {
       await tester.pumpWidget(CalculatorApp());

diff --git a/test/failures/calculator_app_isolatedDiff.png b/test/failures/calculator_app_isolatedDiff.png
diff --git a/test/failures/calculator_app_maskedDiff.png b/test/failures/calculator_app_maskedDiff.png
diff --git a/test/failures/calculator_app_masterImage.png b/test/failures/calculator_app_masterImage.png
diff --git a/test/failures/calculator_app_testImage.png b/test/failures/calculator_app_testImage.png
diff --git a/test/goldens/calculator_app.png b/test/goldens/calculator_app.png