public void RangeToStringWhenMinMaxEqual()
 {
     Range range = new Range(30, 30);
     Assert.Equal("30", range.ToString());
 }
 public void RangeToStringWhenMinZeroAndMaxNonZero()
 {
     Range range = new Range(0, 30);
     Assert.Equal("30", range.ToString());
 }
 public void RangeToString()
 {
     Range range = new Range(30, 50);
     Assert.Equal("30..50", range.ToString());
 }