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Explain const values in MediaQuery test file (#39059)

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Shi-Hao Hong 2019-08-22 13:43:17 -04:00 committed by GitHub
parent 8a258dca48
commit f0656ac37d
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1 changed files with 37 additions and 26 deletions
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63
packages/flutter/test/widgets/media_query_test.dart
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@ -15,8 +15,8 @@ void main() {
tested = true;
MediaQuery.of(context); // should throw
return Container();
}
)
},
),
);
expect(tested, isTrue);
expect(tester.takeException(), isFlutterError);
@ -31,8 +31,8 @@ void main() {
expect(data, isNull);
tested = true;
return Container();
}
)
},
),
);
expect(tested, isTrue);
});
@ -70,16 +70,27 @@ void main() {
});
testWidgets('MediaQuery.copyWith copies specified values', (WidgetTester tester) async {
// Random and unique double values are used to ensure that the correct
// values are copied over exactly
const Size customSize = Size(3.14, 2.72);
const double customDevicePixelRatio = 1.41;
const double customTextScaleFactor = 1.62;
const EdgeInsets customPadding = EdgeInsets.all(9.10938);
const EdgeInsets customViewPadding = EdgeInsets.all(11.24031);
const EdgeInsets customViewInsets = EdgeInsets.all(1.67262);
const EdgeInsets customSystemGestureInsets = EdgeInsets.all(1.5556);
const double customPhysicalDepth = 120.0;
final MediaQueryData data = MediaQueryData.fromWindow(WidgetsBinding.instance.window);
final MediaQueryData copied = data.copyWith(
size: const Size(3.14, 2.72),
devicePixelRatio: 1.41,
textScaleFactor: 1.62,
padding: const EdgeInsets.all(9.10938),
viewPadding: const EdgeInsets.all(11.24031),
viewInsets: const EdgeInsets.all(1.67262),
systemGestureInsets: const EdgeInsets.all(1.5556),
physicalDepth: 120.0,
size: customSize,
devicePixelRatio: customDevicePixelRatio,
textScaleFactor: customTextScaleFactor,
padding: customPadding,
viewPadding: customViewPadding,
viewInsets: customViewInsets,
systemGestureInsets: customSystemGestureInsets,
physicalDepth: customPhysicalDepth,
alwaysUse24HourFormat: true,
accessibleNavigation: true,
invertColors: true,
@ -87,14 +98,14 @@ void main() {
boldText: true,
platformBrightness: Brightness.dark,
);
expect(copied.size, const Size(3.14, 2.72));
expect(copied.devicePixelRatio, 1.41);
expect(copied.textScaleFactor, 1.62);
expect(copied.padding, const EdgeInsets.all(9.10938));
expect(copied.viewPadding, const EdgeInsets.all(11.24031));
expect(copied.viewInsets, const EdgeInsets.all(1.67262));
expect(copied.systemGestureInsets, const EdgeInsets.all(1.5556));
expect(copied.physicalDepth, 120.0);
expect(copied.size, customSize);
expect(copied.devicePixelRatio, customDevicePixelRatio);
expect(copied.textScaleFactor, customTextScaleFactor);
expect(copied.padding, customPadding);
expect(copied.viewPadding, customViewPadding);
expect(copied.viewInsets, customViewInsets);
expect(copied.systemGestureInsets, customSystemGestureInsets);
expect(copied.physicalDepth, customPhysicalDepth);
expect(copied.alwaysUse24HourFormat, true);
expect(copied.accessibleNavigation, true);
expect(copied.invertColors, true);
@ -139,12 +150,12 @@ void main() {
builder: (BuildContext context) {
unpadded = MediaQuery.of(context);
return Container();
}
},
),
);
},
),
)
),
);
expect(unpadded.size, size);
@ -196,12 +207,12 @@ void main() {
builder: (BuildContext context) {
unpadded = MediaQuery.of(context);
return Container();
}
},
),
);
},
),
)
),
);
expect(unpadded.size, size);
@ -253,12 +264,12 @@ void main() {
builder: (BuildContext context) {
unpadded = MediaQuery.of(context);
return Container();
}
},
),
);
},
),
)
),
);
expect(unpadded.size, size);