public void Direction_That_Is_LowerCase_Can_Be_Converted_Into_An_Arrow()
{
DirectionExtensions.ToArrow("n").Should().Be("↑");
}
public void An_Empty_Direction_Cannot_Be_Converted_Into_An_Arrow()
{
Action action = () => DirectionExtensions.ToArrow(null);
action.Should().Throw <ArgumentNullException>();
}
public void Convert_InterCardinal_Direction_Into_Arrow(string direction, string arrow)
{
DirectionExtensions.ToArrow(direction).Should().Be(arrow);
}