public void NorthDirection_has_correct_name()
{
// Act
var direction = new NorthDirection();
// Assert
Assert.AreEqual("North", direction.Direction, "The travel direction was not correctly assigned.");
}
public void NorthDirection_has_correct_reverse_direction()
{
// Arrange
var direction = new NorthDirection();
// Act
ITravelDirection reverseDirection = direction.GetOppositeDirection();
// Assert
Assert.AreEqual("South", reverseDirection.Direction, "The opposite travel direction was not correctly returned.");
}