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17 package org.apache.commons.math.distribution;
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26 public class PascalDistributionTest extends IntegerDistributionAbstractTest {
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32 public PascalDistributionTest(String name) {
33 super(name);
34 }
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39 public IntegerDistribution makeDistribution() {
40 return new PascalDistributionImpl(10,0.70);
41 }
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44 public int[] makeDensityTestPoints() {
45 return new int[] {-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11};
46 }
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49 public double[] makeDensityTestValues() {
50 return new double[] {0d, 0.02824d, 0.08474d, 0.13982d,
51 0.16779d, 0.16359d, 0.1374d, 0.10306d, 0.070673d, 0.04505d, 0.02703d, 0.01540d, 0.0084};
52 }
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55 public int[] makeCumulativeTestPoints() {
56 return makeDensityTestPoints();
57 }
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60 public double[] makeCumulativeTestValues() {
61 return new double[] {0d, 0.02824d, 0.11299d, 0.25281d, 0.42060d, 0.58420d,
62 0.72162d, 0.82468d, 0.89535d, 0.94041d, 0.967446d, 0.98285, 0.99125d};
63 }
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66 public double[] makeInverseCumulativeTestPoints() {
67 return new double[] {0, 0.001d, 0.010d, 0.025d, 0.050d, 0.100d, 0.999d,
68 0.990d, 0.975d, 0.950d, 0.900d, 1};
69 }
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72 public int[] makeInverseCumulativeTestValues() {
73 return new int[] {-1, -1, -1, -1, 0, 0, 13, 10, 9, 8, 7, Integer.MAX_VALUE};
74 }
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79 public void testDegenerate0() throws Exception {
80 setDistribution(new PascalDistributionImpl(5,0.0d));
81 setCumulativeTestPoints(new int[] {-1, 0, 1, 5, 10 });
82 setCumulativeTestValues(new double[] {0d, 0d, 0d, 0d, 0d});
83 setDensityTestPoints(new int[] {-1, 0, 1, 10, 11});
84 setDensityTestValues(new double[] {0d, 0d, 0d, 0d, 0d});
85 setInverseCumulativeTestPoints(new double[] {0.1d, 0.5d});
86 setInverseCumulativeTestValues(new int[] {Integer.MAX_VALUE - 1, Integer.MAX_VALUE - 1});
87 verifyDensities();
88 verifyCumulativeProbabilities();
89 verifyInverseCumulativeProbabilities();
90 }
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93 public void testDegenerate1() throws Exception {
94 setDistribution(new PascalDistributionImpl(5,1.0d));
95 setCumulativeTestPoints(new int[] {-1, 0, 1, 2, 5, 10 });
96 setCumulativeTestValues(new double[] {0d, 1d, 1d, 1d, 1d, 1d});
97 setDensityTestPoints(new int[] {-1, 0, 1, 2, 5, 10});
98 setDensityTestValues(new double[] {0d, 1d, 0d, 0d, 0d, 0d});
99 setInverseCumulativeTestPoints(new double[] {0.1d, 0.5d});
100 setInverseCumulativeTestValues(new int[] {-1, -1});
101 verifyDensities();
102 verifyCumulativeProbabilities();
103 verifyInverseCumulativeProbabilities();
104 }
105 }