// 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/physics.dart'; import 'package:flutter_test/flutter_test.dart'; void main() { test('Clamped simulation 1', () { final GravitySimulation gravity = GravitySimulation(9.81, 10.0, 0.0, 0.0); final ClampedSimulation clamped = ClampedSimulation(gravity, xMin: 20.0, xMax: 100.0, dxMin: 7.0, dxMax: 11.0); expect(clamped.x(0.0), equals(20.0)); expect(clamped.dx(0.0), equals(7.0)); expect(clamped.x(100.0), equals(100.0)); expect(clamped.dx(100.0), equals(11.0)); }); test('Clamped simulation 2', () { final GravitySimulation gravity = GravitySimulation(-10, 0.0, 6.0, 10.0); final ClampedSimulation clamped = ClampedSimulation(gravity, xMin: 0.0, xMax: 2.5, dxMin: -1.0, dxMax: 1.0); expect(clamped.x(0.0), equals(0.0)); expect(clamped.dx(0.0), equals(1.0)); expect(clamped.isDone(0.0), isFalse); expect(clamped.x(1.0), equals(2.5)); expect(clamped.dx(1.0), equals(0.0)); expect(clamped.isDone(0.2), isFalse); expect(clamped.x(2.0), equals(0.0)); expect(clamped.dx(2.0), equals(-1.0)); expect(clamped.isDone(2.0), isFalse); expect(clamped.x(3.0), equals(0.0)); expect(clamped.dx(3.0), equals(-1.0)); expect(clamped.isDone(3.0), isTrue); }); }