Add tests for color_filtered.0.dart example. #151064

ksokolovskyi · 2024-06-30T11:36:06Z

This PR contributes to #130459

Description

Adds tests for examples/api/lib/widgets/color_filter/color_filtered.0.dart

Pre-launch Checklist

I read the [Contributor Guide] and followed the process outlined there for submitting PRs.
I read the [Tree Hygiene] wiki page, which explains my responsibilities.
I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement].
I signed the [CLA].
I listed at least one issue that this PR fixes in the description above.
I updated/added relevant documentation (doc comments with ///).
I added new tests to check the change I am making, or this PR is [test-exempt].
I followed the [breaking change policy] and added [Data Driven Fixes] where supported.
All existing and new tests are passing.

TahaTesser · 2024-07-01T15:40:58Z

examples/api/test/widgets/color_filter/color_filtered.0_test.dart

+    HttpOverrides.global = null;
+  });
+
+  testWidgets('Displays two images', (WidgetTester tester) async {


These 3 tests can be just one clear and concise test.

"'Displays two images" test - you're already finding first and last images the implies there are only two images.

"'Applies red color filter with modulate blend mode to the first image" & "Applies grey color filter with saturation blend mode to the second image" - These two are short and verbose tests. We can add single test with "Color filter is applied to the images" and explain the difference in the test comment instead.

@TahaTesser thanks for the review and great suggestion. I applied it in the latest commit.

TahaTesser · 2024-07-01T15:49:10Z

examples/api/test/widgets/color_filter/color_filtered.0_test.dart

-    await tester.pumpAndSettle();

-    final RenderObject renderObject = tester.firstRenderObject(
+    final RenderObject renderObject1 = tester.firstRenderObject(


We can remove final and reassign the value, this also ensures that we have updated expected values.

Sorry, maybe I am missing something, but how does this ensure we have updated the expected values?

TahaTesser · 2024-07-01T15:49:21Z

examples/api/test/widgets/color_filter/color_filtered.0_test.dart

    );
-    final ColorFilterLayer colorFilterLayer =
-        renderObject.debugLayer! as ColorFilterLayer;
+    final ColorFilterLayer colorFilterLayer1 =


We can remove final and reassign the value, this also ensures that we have updated expected values.

TahaTesser · 2024-07-01T15:55:13Z

examples/api/test/widgets/color_filter/color_filtered.0_test.dart

+    // Verify that two images are displayed.
+    expect(find.byType(Image), findsNWidgets(2));
+
+    final RenderObject renderObject1 = tester.firstRenderObject(


Suggested change

final RenderObject renderObject1 = tester.firstRenderObject(

RenderObject renderObject = tester.firstRenderObject(

TahaTesser · 2024-07-01T15:56:00Z

examples/api/test/widgets/color_filter/color_filtered.0_test.dart

+      equals(const ColorFilter.mode(Colors.red, BlendMode.modulate)),
+    );
+
+    final RenderObject renderObject2 = tester.firstRenderObject(


Suggested change

final RenderObject renderObject2 = tester.firstRenderObject(

renderObject = tester.firstRenderObject(

Earlier we found render object for the first image, here we assign the variable to expect a different value.

TahaTesser

LGTM

bleroux

LGTM!

ksokolovskyi · 2024-07-06T07:30:36Z

@TahaTesser @bleroux thanks for the review!

…#151064)

This PR contributes to flutter#130459 ### Description - Adds tests for `examples/api/lib/widgets/color_filter/color_filtered.0.dart`

…#151064)

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TahaTesser requested review from TahaTesser and bleroux July 1, 2024 15:36

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ksokolovskyi force-pushed the add-color-filtered-example-tests branch 3 times, most recently from b957b99 to 7a8e7b7 Compare July 1, 2024 21:17

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ksokolovskyi added 3 commits July 3, 2024 14:02

Add tests for color_filtered.0.dart example.

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ksokolovskyi force-pushed the add-color-filtered-example-tests branch from 531d935 to 974bfa2 Compare July 3, 2024 12:02

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	final RenderObject renderObject1 = tester.firstRenderObject(
	RenderObject renderObject = tester.firstRenderObject(

	final RenderObject renderObject2 = tester.firstRenderObject(
	renderObject = tester.firstRenderObject(

Add tests for color_filtered.0.dart example. #151064

Add tests for color_filtered.0.dart example. #151064

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ksokolovskyi commented Jun 30, 2024

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