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

        public void TestSubtractOfCompletelyCoveredRange()
        {
            IntervalSet s = IntervalSet.Of(10, 20);
            IntervalSet s2 = IntervalSet.Of(1, 25);
            String expecting = "{}";
            String result = (s.Subtract(s2)).ToString();
            Assert.AreEqual(expecting, result);
        }