public void Equals_UseSameAndDifferentRanges_EqualOrNotEqualNoExceptions() { RangeItemHeaderValue rangeItem1 = new RangeItemHeaderValue(1, 2); RangeItemHeaderValue rangeItem2 = new RangeItemHeaderValue(1, null); RangeItemHeaderValue rangeItem3 = new RangeItemHeaderValue(null, 2); RangeItemHeaderValue rangeItem4 = new RangeItemHeaderValue(2, 2); RangeItemHeaderValue rangeItem5 = new RangeItemHeaderValue(1, 2); Assert.False(rangeItem1.Equals(rangeItem2), "1-2 vs. 1-."); Assert.False(rangeItem2.Equals(rangeItem1), "1- vs. 1-2."); Assert.False(rangeItem1.Equals(null), "1-2 vs. null."); Assert.False(rangeItem1.Equals(rangeItem3), "1-2 vs. -2."); Assert.False(rangeItem3.Equals(rangeItem1), "-2 vs. 1-2."); Assert.False(rangeItem1.Equals(rangeItem4), "1-2 vs. 2-2."); Assert.True(rangeItem1.Equals(rangeItem5), "1-2 vs. 1-2."); }