public void OffSetShouldMoveAsExpected()
{
var subject = new Area(new Point(12.34, 45.56), new Point(67.67, 89.90));
Area result = subject.Offset(1, 1);
Assert.AreEqual(13.34, result.TopLeft.X);
Assert.AreEqual(46.56, result.TopLeft.Y);
Assert.AreEqual(68.67, result.BottomRight.X);
Assert.AreEqual(90.90, result.BottomRight.Y);
}
public void OffSetShouldNotReassignReference()
{
var subject = new Area(new Point(12.34, 45.56), new Point(67.67, 89.90));
Area result = subject.Offset(1, 1);
// Ensure it doesnt change after creation, ie cloned.
subject.Offset(1, 1);
Assert.AreNotEqual(result.TopLeft, subject.TopLeft);
Assert.AreNotEqual(result.BottomRight, subject.BottomRight);
}