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

        public void TestSubtractOfCompletelyContainedRange()
        {
            IntervalSet s = IntervalSet.Of(10, 20);
            IntervalSet s2 = IntervalSet.Of(12, 15);
            String expecting = "{10..11, 16..20}";
            String result = (s.Subtract(s2)).ToString();
            Assert.AreEqual(expecting, result);
        }