diff --git a/java/test/org/broadinstitute/sting/utils/MathUtilsTest.java b/java/test/org/broadinstitute/sting/utils/MathUtilsTest.java new file mode 100755 index 000000000..b71c2c8f9 --- /dev/null +++ b/java/test/org/broadinstitute/sting/utils/MathUtilsTest.java @@ -0,0 +1,34 @@ +package org.broadinstitute.sting.utils; + +import org.junit.Assert; +import org.junit.BeforeClass; +import org.junit.Test; +import org.broadinstitute.sting.BaseTest; +import org.broadinstitute.sting.utils.MathUtils; + + +import java.io.File; + +/** + * Basic unit test for MathUtils + */ +public class MathUtilsTest extends BaseTest { + @BeforeClass + public static void init() { } + + /** + * Tests that we get the right values from the binomial distribution + */ + @Test + public void testBinomialProbability() { + logger.warn("Executing testBinomialProbability"); + + Assert.assertTrue(MathUtils.compareDoubles(MathUtils.binomialProbability(2, 3, 0.5), 0.375, 0.001) == 0); + Assert.assertTrue(MathUtils.compareDoubles(MathUtils.binomialProbability(10, 100, 0.5), 1.365543e-17, 1e-18) == 0); + Assert.assertTrue(MathUtils.compareDoubles(MathUtils.binomialProbability(73, 217, 0.02), 4.521904e-67, 1e-68) == 0); + Assert.assertTrue(MathUtils.compareDoubles(MathUtils.binomialProbability(100, 300, 0.02), 9.27097e-91, 1e-92) == 0); + Assert.assertTrue(MathUtils.compareDoubles(MathUtils.binomialProbability(150, 300, 0.98), 6.462892e-168, 1e-169) == 0); + Assert.assertTrue(MathUtils.compareDoubles(MathUtils.binomialProbability(120, 300, 0.98), 3.090054e-221, 1e-222) == 0); + Assert.assertTrue(MathUtils.compareDoubles(MathUtils.binomialProbability(112, 300, 0.98), 2.34763e-236, 1e-237) == 0); + } +} \ No newline at end of file