Accord.Tests.Math.DistanceTest.MahalanobisTest4 C# (CSharp) Method

        public void MahalanobisTest4()
        {
            double[] x, y;
            double expected, actual;

            x = new double[] { 2, 4, 1 };
            y = new double[] { 0, 0, 0 };
            expected = Distance.Euclidean(x, y);
            actual = Distance.Mahalanobis(x, y, Matrix.Identity(3));
            Assert.AreEqual(expected, actual);

            x = new double[] { 0.1, 0.12, -1 };
            y = new double[] { 195, 0, 2912 };
            expected = Distance.Euclidean(x, y);
            actual = Distance.Mahalanobis(x, y, Matrix.Identity(3));
            Assert.AreEqual(expected, actual);

            x = new double[] { -2, -4, -1 };
            y = new double[] { -2, -4, -1 };
            expected = Distance.Euclidean(x, y);
            actual = Distance.Mahalanobis(x, y, Matrix.Identity(3));
            Assert.AreEqual(expected, actual);

            x = new double[] { 2, 4, 1 };
            y = new double[] { 0, -7.2, 4.6 };
            expected = Distance.Euclidean(x, y);
            actual = Distance.Mahalanobis(x, y, Matrix.Identity(3));
            Assert.AreEqual(expected, actual);

            x = new double[] { -2, 4, 1 };
            y = new double[] { 0, -0.1, 4.2 };
            expected = Distance.Euclidean(x, y);
            actual = Distance.Mahalanobis(x, y, Matrix.Identity(3));
            Assert.AreEqual(expected, actual);
        }