// Copyright 2017 The Chromium 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';voidmain(){test('gravity simulation',(){expect(newGravitySimulation(9.81,10.0,0.0,0.0),hasOneLineDescription);expect(newGravitySimulation(9.81,10.0,0.0,0.0).x(10.0),moreOrLessEquals(50.0*9.81+10.0));});}