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// 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/material.dart';
import 'package:flutter_test/flutter_test.dart';
void main() {
test('MaterialPointArcTween control test', () {
final MaterialPointArcTween a = MaterialPointArcTween(
begin: Offset.zero,
end: const Offset(0.0, 10.0),
);
final MaterialPointArcTween b = MaterialPointArcTween(
begin: Offset.zero,
end: const Offset(0.0, 10.0),
);
expect(a, hasOneLineDescription);
expect(a.toString(), equals(b.toString()));
});
test('MaterialRectArcTween control test', () {
final MaterialRectArcTween a = MaterialRectArcTween(
begin: const Rect.fromLTWH(0.0, 0.0, 10.0, 10.0),
end: const Rect.fromLTWH(0.0, 10.0, 10.0, 10.0),
);
final MaterialRectArcTween b = MaterialRectArcTween(
begin: const Rect.fromLTWH(0.0, 0.0, 10.0, 10.0),
end: const Rect.fromLTWH(0.0, 10.0, 10.0, 10.0),
);
expect(a, hasOneLineDescription);
expect(a.toString(), equals(b.toString()));
});
test('on-axis MaterialPointArcTween', () {
MaterialPointArcTween tween = MaterialPointArcTween(
begin: Offset.zero,
end: const Offset(0.0, 10.0),
);
expect(tween.lerp(0.5), equals(const Offset(0.0, 5.0)));
expect(tween, hasOneLineDescription);
tween = MaterialPointArcTween(
begin: Offset.zero,
end: const Offset(10.0, 0.0),
);
expect(tween.lerp(0.5), equals(const Offset(5.0, 0.0)));
});
test('on-axis MaterialRectArcTween', () {
MaterialRectArcTween tween = MaterialRectArcTween(
begin: const Rect.fromLTWH(0.0, 0.0, 10.0, 10.0),
end: const Rect.fromLTWH(0.0, 10.0, 10.0, 10.0),
);
expect(tween.lerp(0.5), equals(const Rect.fromLTWH(0.0, 5.0, 10.0, 10.0)));
expect(tween, hasOneLineDescription);
tween = MaterialRectArcTween(
begin: const Rect.fromLTWH(0.0, 0.0, 10.0, 10.0),
end: const Rect.fromLTWH(10.0, 0.0, 10.0, 10.0),
);
expect(tween.lerp(0.5), equals(const Rect.fromLTWH(5.0, 0.0, 10.0, 10.0)));
});
test('MaterialPointArcTween', () {
const Offset begin = Offset(180.0, 110.0);
const Offset end = Offset(37.0, 250.0);
MaterialPointArcTween tween = MaterialPointArcTween(begin: begin, end: end);
expect(tween.lerp(0.0), begin);
expect(tween.lerp(0.25), within<Offset>(distance: 2.0, from: const Offset(126.0, 120.0)));
expect(tween.lerp(0.75), within<Offset>(distance: 2.0, from: const Offset(48.0, 196.0)));
expect(tween.lerp(1.0), end);
tween = MaterialPointArcTween(begin: end, end: begin);
expect(tween.lerp(0.0), end);
expect(tween.lerp(0.25), within<Offset>(distance: 2.0, from: const Offset(91.0, 239.0)));
expect(tween.lerp(0.75), within<Offset>(distance: 2.0, from: const Offset(168.3, 163.8)));
expect(tween.lerp(1.0), begin);
});
test('MaterialRectArcTween', () {
const Rect begin = Rect.fromLTRB(180.0, 100.0, 330.0, 200.0);
const Rect end = Rect.fromLTRB(32.0, 275.0, 132.0, 425.0);
bool sameRect(Rect a, Rect b) {
return (a.left - b.left).abs() < 2.0
&& (a.top - b.top).abs() < 2.0
&& (a.right - b.right).abs() < 2.0
&& (a.bottom - b.bottom).abs() < 2.0;
}
MaterialRectArcTween tween = MaterialRectArcTween(begin: begin, end: end);
expect(tween.lerp(0.0), begin);
expect(sameRect(tween.lerp(0.25), const Rect.fromLTRB(120.0, 113.0, 259.0, 237.0)), isTrue);
expect(sameRect(tween.lerp(0.75), const Rect.fromLTRB(42.3, 206.5, 153.5, 354.7)), isTrue);
expect(tween.lerp(1.0), end);
tween = MaterialRectArcTween(begin: end, end: begin);
expect(tween.lerp(0.0), end);
expect(sameRect(tween.lerp(0.25), const Rect.fromLTRB(92.0, 262.0, 203.0, 388.0)), isTrue);
expect(sameRect(tween.lerp(0.75), const Rect.fromLTRB(169.7, 168.5, 308.5, 270.3)), isTrue);
expect(tween.lerp(1.0), begin);
});
}