Accord.Tests.Statistics.BetaDistributionTest.BetaDistributionConstructorTest C# (CSharp) Method

        public void BetaDistributionConstructorTest()
        {
            double expected, actual;

            {
                BetaDistribution target = new BetaDistribution(1.73, 4.2);
                actual = target.ProbabilityDensityFunction(-1);
                expected = 0;
                Assert.AreEqual(expected, actual, 1e-7);
                Assert.IsFalse(Double.IsNaN(actual));

                actual = target.ProbabilityDensityFunction(0);
                expected = 0;
                Assert.AreEqual(expected, actual, 1e-7);
                Assert.IsFalse(Double.IsNaN(actual));

                actual = target.ProbabilityDensityFunction(1);
                expected = 0;
                Assert.AreEqual(expected, actual, 1e-7);
                Assert.IsFalse(Double.IsNaN(actual));

                actual = target.ProbabilityDensityFunction(0.2);
                expected = 2.27095841;
                Assert.AreEqual(expected, actual, 1e-7);
                Assert.IsFalse(Double.IsNaN(actual));

                actual = target.ProbabilityDensityFunction(0.4);
                expected = 1.50022749;
                Assert.AreEqual(expected, actual, 1e-7);
                Assert.IsFalse(Double.IsNaN(actual));
            }
        }