Make sure that a CupertinoListTileChevron doesn't crash in 0x0 enviro… #179165
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This pull request adds a regression test for a crash in CupertinoListTileChevron. While adding tests is great, the fix for the crash itself seems to be missing from this PR. The test is also flawed as it doesn't correctly reproduce the crash conditions, which I've detailed in a specific comment. Please add the fix and update the test to ensure it properly covers the failure case.
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| testWidgets('CupertinoListTileChevron does not crash at zero area', (WidgetTester tester) async { | ||
| await tester.pumpWidget( | ||
| const CupertinoApp( | ||
| home: Center(child: SizedBox.shrink(child: CupertinoListTileChevron())), | ||
| ), | ||
| ); | ||
| expect(tester.getSize(find.byType(CupertinoListTileChevron)), Size.zero); | ||
| }); |
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This test aims to prevent a crash in CupertinoListTileChevron when it's used in an environment without a MediaQuery. However, by wrapping the widget under test in CupertinoApp, a MediaQuery is provided, which masks the original issue. This means the test will pass even without the fix, defeating its purpose as a regression test.
To properly test the fix, the test environment should replicate the conditions of the original crash, which means running without an ambient MediaQuery that provides text scaling information. Consider removing CupertinoApp and constructing a more minimal widget tree for this test.
victorsanni
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Maybe in the 0x0 CupertinoListTile test we can also check for the chevron?
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Done. Check the CupertinoListTile PR. |
dkwingsmt
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Checklist:
- The test is in the correct file
- The test name goes “does not crash at zero area”
- The target widget is wrapped by
Center(or is fullscreen) - The target widget does not have an overlay, or the overlay is tested
- The target widget is expected to have a size of exactly
Size.zero
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flutter#179165) This is my attempt to handle flutter#6537 for the CupertinoListTileChevron widget. Co-authored-by: Tong Mu <[email protected]>
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This is my attempt to handle #6537 for the CupertinoListTileChevron widget.