public void TestTakeOff()
{
ISeacraft seabird = new Seabird();
((IAircraft)seabird).TakeOff();
Assert.IsTrue(((IAircraft)seabird).Airborne);
Assert.AreEqual(100, ((IAircraft)seabird).Height);
Assert.AreEqual(50, seabird.Speed);
}
public void TestIncreaseRevsSpeedLessThan40()
{
ISeacraft seabird = new Seabird();
seabird.IncreaseRevs();
seabird.IncreaseRevs();
Assert.IsFalse(((IAircraft)seabird).Airborne);
Assert.AreEqual(0, ((IAircraft)seabird).Height);
Assert.AreEqual(20, seabird.Speed);
}
public void TestIncreaseRevsSpeedGreaterThan40()
{
ISeacraft seabird = new Seabird();
seabird.IncreaseRevs();
seabird.IncreaseRevs();
seabird.IncreaseRevs();
seabird.IncreaseRevs();
seabird.IncreaseRevs();
Assert.IsTrue(((IAircraft)seabird).Airborne);
Assert.AreEqual(100, ((IAircraft)seabird).Height);
Assert.AreEqual(50, seabird.Speed);
}