Reland Add test for dynamic_content_color.0.dart #158547

ValentinVignal · 2024-11-13T01:46:25Z

Fixes #130459

Follow up of the reverted #158309

It adds a test for

examples/api/lib/material/color_scheme/dynamic_content_color.0.dart

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I listed at least one issue that this PR fixes in the description above.
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bleroux

Nice!

Because this example is somewhat complex, consider introducing several tests.
See my comment about factoring out the fake loader.

First test is the one you have (just removed the last step).
Second test would be the end of your test (switching brightness).
Third test would simulate selecting the second image and checking the color scheme has changed.

bleroux · 2024-11-13T06:49:55Z

examples/api/test/material/color_scheme/dynamic_content_color.0_test.dart

+
+  testWidgets('The theme colors are created dynamically from the first image', (WidgetTester tester) async {
+    final List<(ImageProvider<Object>, Brightness)> loadColorSchemeCalls = <(ImageProvider<Object>, Brightness)>[];
+    await tester.pumpWidget(
+      example.DynamicColorExample(
+        loadColorScheme: (ImageProvider<Object> provider, Brightness brightness) async {
+          loadColorSchemeCalls.add((provider, brightness));
+          return const ColorScheme.light();
+        },
+      ),
+    );
+    await tester.pump();


Suggested change

testWidgets('The theme colors are created dynamically from the first image', (WidgetTester tester) async {

final List<(ImageProvider<Object>, Brightness)> loadColorSchemeCalls = <(ImageProvider<Object>, Brightness)>[];

await tester.pumpWidget(

example.DynamicColorExample(

loadColorScheme: (ImageProvider<Object> provider, Brightness brightness) async {

loadColorSchemeCalls.add((provider, brightness));

return const ColorScheme.light();

},

),

);

await tester.pump();

final List<(ImageProvider<Object>, Brightness)> loadColorSchemeCalls = <(ImageProvider<Object>, Brightness)>[];

Future<ColorScheme> fakeColorSchemeLoader(ImageProvider<Object> provider, Brightness brightness) async {

loadColorSchemeCalls.add((provider, brightness));

return provider == example.DynamicColorExample.images[1]

? ColorScheme.fromSeed(seedColor: Colors.lightBlue)

: const ColorScheme.light();

}

setUp(() {

loadColorSchemeCalls.clear();

});

testWidgets('The theme colors are created dynamically from the first image', (WidgetTester tester) async {

await tester.pumpWidget(

example.DynamicColorExample(loadColorScheme: fakeColorSchemeLoader),

);

await tester.pump();

Proposed way to share the fake loader between several tests.

bleroux · 2024-11-13T06:53:46Z

examples/api/test/material/color_scheme/dynamic_content_color.0_test.dart

+      Brightness.light,
+    );
+
+    await tester.tap(find.byType(Switch));


Starting there, it could be more readable to start a new test, maybe named 'Brightness can be changed'
(the content should be updated because the list containing calls is cleared between tests).

ValentinVignal · 2024-11-13T15:29:56Z

Nice suggestions @bleroux ! I've done the changes in test: More detailed tests, hope it is good enough :)

bleroux

Almost ready, see my comments

bleroux · 2024-11-13T15:56:45Z

examples/api/test/material/color_scheme/dynamic_content_color.0_test.dart

+    expect(
+      loadColorSchemeCalls.single.$1,
+      isA<NetworkImage>()
+        .having(
+          (NetworkImage provider) => provider.url,
+          'url',
+          'https://flutter.github.io/assets-for-api-docs/assets/material/content_based_color_scheme_1.png',
+        ),
+    );
+    expect(
+      loadColorSchemeCalls.single.$2,
+      Brightness.light,
+    );


Maybe make the test shorter by removing those lines as it was already tested on the other test and it is not what this test focus on.

bleroux · 2024-11-13T15:57:25Z

examples/api/test/material/color_scheme/dynamic_content_color.0_test.dart

+      loadColorSchemeCalls.last.$2,
+      Brightness.light,
+    );
+


Is there a way to check the app color scheme is the new one?

bleroux

Congratulations for finishing this missing example tests task 🙏

…tter#158547)

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ValentinVignal requested a review from bleroux November 13, 2024 01:46

github-actions bot added framework flutter/packages/flutter repository. See also f: labels. d: api docs Issues with https://api.flutter.dev/ d: examples Sample code and demos labels Nov 13, 2024

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ValentinVignal requested a review from bleroux November 14, 2024 02:06

ValentinVignal added 3 commits November 14, 2024 10:54

test: Add test for dynamic_content_color.0.dart

58399a7

test: More detailed tests

0853adf

test: Better tests by evaluating the color scheme

03b1bd1

ValentinVignal force-pushed the flutter/examples/api/Reland-test-for-dynamic-color-content branch from aac7e2c to 03b1bd1 Compare November 14, 2024 02:54

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