MOEAFramework-2.10.test.org.moeaframework.util.statistics.IntervalRatioStatisticalTestTest Maven / Gradle / Ivy
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The MOEA Framework Maven Distribution
/* Copyright 2009-2016 David Hadka
*
* This file is part of the MOEA Framework.
*
* The MOEA Framework is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or (at your
* option) any later version.
*
* The MOEA Framework is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the MOEA Framework. If not, see .
*/
package org.moeaframework.util.statistics;
import java.util.List;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
/**
* Tests the {@link IntervalRatioStatisticalTest} class.
*/
public class IntervalRatioStatisticalTestTest {
/**
* The shared interval ratio statistical test.
*/
private IntervalRatioStatisticalTest test = null;
/**
* Constructs the shared interval ratio statistical test.
*/
@Before
public void setUp() {
test = new IntervalRatioStatisticalTest(2) {
public boolean test(double alpha) {
throw new UnsupportedOperationException();
}
};
}
/**
* Removes references to shared objects so they can be garbage collected.
*/
@After
public void tearDown() {
test = null;
}
/**
* Tests if the {@link IntervalRatioStatisticalTest#categorize} procedure
* correctly organized categories/groups.
*/
@Test
public void testCategorize() {
test.add(2.0, 0);
test.add(-1.0, 1);
test.add(-2.0, 1);
test.add(3.0, 0);
test.add(5.0, 1);
test.add(-1.0, 0);
test.add(-3.0, 0);
List result = test.categorize();
Assert.assertEquals(2, result.size());
testArraysMatch(new double[] { 2.0, 3.0, -1.0, -3.0 }, result.get(0));
testArraysMatch(new double[] { -1.0, -2.0, 5.0 }, result.get(1));
}
/**
* Asserts that the two arrays contain the same elements, but not
* necessarily in the same order.
*
* @param a1 the first array
* @param a2 the second array
*/
public void testArraysMatch(double[] a1, double[] a2) {
for (int i = 0; i < a1.length; i++) {
boolean found = false;
for (int j = 0; j < a2.length; j++) {
if (a1[i] == a2[j]) {
found = true;
a2[j] = Double.NaN;
}
}
Assert.assertTrue(found);
}
}
/**
* Tests if the {@link IntervalRatioStatisticalTest#add} method correctly
* throws an exception for invalid groups.
*/
@Test(expected = IllegalArgumentException.class)
public void testGroupException1() {
test.add(0.0, -1);
}
/**
* Tests if the {@link IntervalRatioStatisticalTest#add} method correctly
* throws an exception for invalid groups.
*/
@Test(expected = IllegalArgumentException.class)
public void testGroupException2() {
test.add(0.0, 2);
}
}