Antlr4.Runtime.Test.TestIntervalSet.TestSubtractOfOverlappingRangeFromRight C# (CSharp) Method

        public void TestSubtractOfOverlappingRangeFromRight()
        {
            IntervalSet s = IntervalSet.Of(10, 20);
            IntervalSet s2 = IntervalSet.Of(15, 25);
            String expecting = "{10..14}";
            String result = (s.Subtract(s2)).ToString();
            Assert.AreEqual(expecting, result);

            IntervalSet s3 = IntervalSet.Of(20, 25);
            expecting = "{10..19}";
            result = (s.Subtract(s3)).ToString();
            Assert.AreEqual(expecting, result);
        }