62 lines
1.8 KiB
Dart
62 lines
1.8 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/physics.dart';
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import 'package:flutter_test/flutter_test.dart';
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class TestSimulation extends Simulation {
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@override
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double x(double t) => 0.0;
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@override
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double dx(double t) => 0.0;
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@override
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bool isDone(double t) => true;
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}
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void main() {
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test('Simulation.toString', () {
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expect(
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ClampedSimulation(
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TestSimulation(),
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xMin: -1.0,
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xMax: 2.0,
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dxMin: -3.0,
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dxMax: 4.0,
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).toString(),
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'ClampedSimulation(simulation: TestSimulation, x: -1.0..2.0, dx: -3.0..4.0)',
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);
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expect(TestSimulation().toString(), 'TestSimulation');
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expect(
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GravitySimulation(1.0, -2.0, 3.0, -4.0).toString(),
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'GravitySimulation(g: 1.0, x₀: -2.0, dx₀: -4.0, xₘₐₓ: ±3.0)',
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);
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expect(
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FrictionSimulation(1.0, -2.0, 3.0).toString(),
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'FrictionSimulation(cₓ: 1.0, x₀: -2.0, dx₀: 3.0)',
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);
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expect(
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BoundedFrictionSimulation(1.0, -2.0, 3.0, -4.0, 5.0).toString(),
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'BoundedFrictionSimulation(cₓ: 1.0, x₀: -2.0, dx₀: 3.0, x: -4.0..5.0)',
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);
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expect(
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const SpringDescription(mass: 1.0, stiffness: -2.0, damping: 3.0).toString(),
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'SpringDescription(mass: 1.0, stiffness: -2.0, damping: 3.0)',
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);
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expect(
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SpringDescription.withDampingRatio(mass: 1.0, stiffness: 9.0).toString(),
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'SpringDescription(mass: 1.0, stiffness: 9.0, damping: 6.0)',
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);
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expect(
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SpringSimulation(
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const SpringDescription(mass: 1.0, stiffness: 2.0, damping: 3.0),
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0.0,
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1.0,
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2.0,
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).toString(),
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'SpringSimulation(end: 1.0, SpringType.overDamped)',
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);
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});
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}
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