public void GetTokenFrequencyCaseInsensitiveTest()
        {
            var freq = TokenUtilities.GetTokenFrequency(Sample, true);

            Assert.AreEqual(3, freq["a"]);
            Assert.AreEqual(3, freq["A"]);
        }
        public void GetTokenFrequencyTest()
        {
            var freq = TokenUtilities.GetTokenFrequency(Sample, false);

            Assert.AreEqual(4, freq.Count);

            Assert.AreEqual(2, freq["a"]);
            Assert.AreEqual(1, freq["A"]);
            Assert.AreEqual(1, freq["b"]);
            Assert.AreEqual(2, freq["c"]);
        }