Accord.Tests.Math.DistanceTest.LevenshteinTest1 C# (CSharp) Method

        public void LevenshteinTest1()
        {
            Assert.AreEqual(0, Distance.Levenshtein("", ""));
            Assert.AreEqual(1, Distance.Levenshtein("", "a"));
            Assert.AreEqual(1, Distance.Levenshtein("a", ""));
            Assert.AreEqual(0, Distance.Levenshtein("a", "a"));
            Assert.AreEqual(0, Distance.Levenshtein(null, null));
            Assert.AreEqual(1, Distance.Levenshtein(null, "a"));
            Assert.AreEqual(1, Distance.Levenshtein("a", null));
            Assert.AreEqual(0, Distance.Levenshtein(null, ""));
            Assert.AreEqual(5, Distance.Levenshtein("apple", "banana"));

            Assert.AreEqual(0, Distance.Levenshtein(new int [] { }, new int[] { }));
            Assert.AreEqual(1, Distance.Levenshtein(new int[] { }, new int[] { 1 }));
            Assert.AreEqual(1, Distance.Levenshtein(new int[] { 1 }, new int[] { }));
            Assert.AreEqual(0, Distance.Levenshtein(new int[] { 1 }, new int[] { 1 }));
            Assert.AreEqual(0, Distance.Levenshtein(null, null));
            Assert.AreEqual(1, Distance.Levenshtein(null, new int[] { 1 }));
            Assert.AreEqual(1, Distance.Levenshtein(new int[] { 1 }, null));
            Assert.AreEqual(0, Distance.Levenshtein(new int[] { }, null));
            Assert.AreEqual(0, Distance.Levenshtein(null, new int[] { }));
            Assert.AreEqual(5, Distance.Levenshtein(new int[] { 1, 2, 2, 3, 4 }, new int[] { 5, 1, 6, 1, 6, 1 }));
        }