Accord.Tests.Statistics.NegativeBinomialTest.NegativeBinomialConstructorTest C# (CSharp) Method

        public void NegativeBinomialConstructorTest()
        {
            double expected, actual;

            {
                NegativeBinomialDistribution target = new NegativeBinomialDistribution(6, 0.42);
                actual = target.ProbabilityMassFunction(-1);
                expected = 0.0;
                Assert.AreEqual(expected, actual, 1e-7);
                Assert.IsFalse(Double.IsNaN(actual));

                actual = target.ProbabilityMassFunction(0);
                expected = 0.00548903;
                Assert.AreEqual(expected, actual, 1e-7);
                Assert.IsFalse(Double.IsNaN(actual));

                actual = target.ProbabilityMassFunction(1);
                expected = 0.0191018;
                Assert.AreEqual(expected, actual, 1e-7);
                Assert.IsFalse(Double.IsNaN(actual));

                actual = target.ProbabilityMassFunction(2);
                expected = 0.0387767;
                Assert.AreEqual(expected, actual, 1e-7);
                Assert.IsFalse(Double.IsNaN(actual));

                actual = target.ProbabilityMassFunction(10);
                expected = 0.0710119;
                Assert.AreEqual(expected, actual, 1e-7);
                Assert.IsFalse(Double.IsNaN(actual));
            }
        }