130 lines
4.6 KiB
Dart
130 lines
4.6 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
import 'package:flutter/rendering.dart';
|
|
import 'package:flutter_test/flutter_test.dart';
|
|
|
|
void main() {
|
|
test('applyGrowthDirectionToAxisDirection produces expected AxisDirection', () {
|
|
expect(AxisDirection.values.length, 4);
|
|
for (final AxisDirection axisDirection in AxisDirection.values) {
|
|
expect(
|
|
applyGrowthDirectionToAxisDirection(axisDirection, GrowthDirection.forward),
|
|
axisDirection,
|
|
);
|
|
}
|
|
expect(
|
|
applyGrowthDirectionToAxisDirection(AxisDirection.up, GrowthDirection.reverse),
|
|
AxisDirection.down,
|
|
);
|
|
expect(
|
|
applyGrowthDirectionToAxisDirection(AxisDirection.down, GrowthDirection.reverse),
|
|
AxisDirection.up,
|
|
);
|
|
expect(
|
|
applyGrowthDirectionToAxisDirection(AxisDirection.left, GrowthDirection.reverse),
|
|
AxisDirection.right,
|
|
);
|
|
expect(
|
|
applyGrowthDirectionToAxisDirection(AxisDirection.right, GrowthDirection.reverse),
|
|
AxisDirection.left,
|
|
);
|
|
});
|
|
|
|
test('SliverConstraints are the same when copied', () {
|
|
const original = SliverConstraints(
|
|
axisDirection: AxisDirection.down,
|
|
growthDirection: GrowthDirection.forward,
|
|
userScrollDirection: ScrollDirection.idle,
|
|
scrollOffset: 0.0,
|
|
precedingScrollExtent: 0.0,
|
|
overlap: 0.0,
|
|
remainingPaintExtent: 0.0,
|
|
crossAxisExtent: 0.0,
|
|
crossAxisDirection: AxisDirection.right,
|
|
viewportMainAxisExtent: 0.0,
|
|
cacheOrigin: 0.0,
|
|
remainingCacheExtent: 0.0,
|
|
);
|
|
final SliverConstraints copy = original.copyWith();
|
|
expect(original, equals(copy));
|
|
expect(original.hashCode, equals(copy.hashCode));
|
|
expect(original.toString(), equals(copy.toString()));
|
|
expect(original, hasOneLineDescription);
|
|
expect(original.normalizedGrowthDirection, equals(GrowthDirection.forward));
|
|
});
|
|
|
|
test(
|
|
'SliverConstraints normalizedGrowthDirection is inferred from AxisDirection and GrowthDirection',
|
|
() {
|
|
const a = SliverConstraints(
|
|
axisDirection: AxisDirection.down,
|
|
growthDirection: GrowthDirection.forward,
|
|
userScrollDirection: ScrollDirection.idle,
|
|
scrollOffset: 0.0,
|
|
precedingScrollExtent: 0.0,
|
|
overlap: 0.0,
|
|
remainingPaintExtent: 0.0,
|
|
crossAxisExtent: 0.0,
|
|
crossAxisDirection: AxisDirection.right,
|
|
viewportMainAxisExtent: 0.0,
|
|
cacheOrigin: 0.0,
|
|
remainingCacheExtent: 0.0,
|
|
);
|
|
|
|
final SliverConstraints c = a.copyWith(
|
|
axisDirection: AxisDirection.up,
|
|
growthDirection: GrowthDirection.reverse,
|
|
userScrollDirection: ScrollDirection.forward,
|
|
scrollOffset: 10.0,
|
|
overlap: 20.0,
|
|
remainingPaintExtent: 30.0,
|
|
crossAxisExtent: 40.0,
|
|
viewportMainAxisExtent: 30.0,
|
|
);
|
|
const d = SliverConstraints(
|
|
axisDirection: AxisDirection.up,
|
|
growthDirection: GrowthDirection.reverse,
|
|
userScrollDirection: ScrollDirection.forward,
|
|
scrollOffset: 10.0,
|
|
precedingScrollExtent: 0.0,
|
|
overlap: 20.0,
|
|
remainingPaintExtent: 30.0,
|
|
crossAxisExtent: 40.0,
|
|
crossAxisDirection: AxisDirection.right,
|
|
viewportMainAxisExtent: 30.0,
|
|
cacheOrigin: 0.0,
|
|
remainingCacheExtent: 0.0,
|
|
);
|
|
expect(c, equals(d));
|
|
expect(c.normalizedGrowthDirection, equals(GrowthDirection.forward));
|
|
expect(d.normalizedGrowthDirection, equals(GrowthDirection.forward));
|
|
|
|
final SliverConstraints e = d.copyWith(axisDirection: AxisDirection.right);
|
|
expect(e.normalizedGrowthDirection, equals(GrowthDirection.reverse));
|
|
|
|
final SliverConstraints f = d.copyWith(axisDirection: AxisDirection.left);
|
|
expect(f.normalizedGrowthDirection, equals(GrowthDirection.forward));
|
|
|
|
final SliverConstraints g = d.copyWith(growthDirection: GrowthDirection.forward);
|
|
expect(g.normalizedGrowthDirection, equals(GrowthDirection.reverse));
|
|
},
|
|
);
|
|
|
|
test('SliverGeometry with no arguments is valid', () {
|
|
expect(SliverGeometry.zero.debugAssertIsValid(), isTrue);
|
|
});
|
|
|
|
test('SliverGeometry throws error when layoutExtent exceeds paintExtent', () {
|
|
expect(() {
|
|
const SliverGeometry(layoutExtent: 10.0, paintExtent: 9.0).debugAssertIsValid();
|
|
}, throwsFlutterError);
|
|
});
|
|
|
|
test('SliverGeometry throws error when maxPaintExtent is less than paintExtent', () {
|
|
expect(() {
|
|
const SliverGeometry(paintExtent: 9.0, maxPaintExtent: 8.0).debugAssertIsValid();
|
|
}, throwsFlutterError);
|
|
});
|
|
}
|