@Test
public void testStop() {
// setup
Vehicle vehicle = new Vehicle();
vehicle.setAngle(0);
vehicle.setOwner("hoge");
vehicle.setSpeed(60);
// execute
vehicle.stop();
double actual = vehicle.getSpeed();
// test
assertTrue(0.0 == actual);
}
// ex15 test
@Test
public void testChangeSpeed() {
// setup
Vehicle vehicle = new Vehicle();
vehicle.setAngle(0);
vehicle.setOwner("hoge");
vehicle.setSpeed(60);
// execute
vehicle.changeSpeed(12.34);
double actual = vehicle.getSpeed();
// test
assertEquals(12.34, actual, 0.01);
}