public void LineSegment_ToString_ShouldReturnFormattedString() { LineSegment lineSegment1 = new LineSegment(Point.MakePointWithInches(0, 5)); lineSegment1.ToString().Should().Be(string.Format("BasePoint= {0}, EndPoint= {1}, Length={2}", lineSegment1.BasePoint.ToString(), lineSegment1.EndPoint.ToString(), lineSegment1.Length.ToString())); }