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17 package org.apache.commons.math4.legacy.optim.univariate;
18
19 import org.apache.commons.math4.legacy.exception.NotStrictlyPositiveException;
20 import org.junit.Test;
21 import org.junit.Assert;
22
23 public class SimpleUnivariateValueCheckerTest {
24 @Test(expected=NotStrictlyPositiveException.class)
25 public void testIterationCheckPrecondition() {
26 new SimpleUnivariateValueChecker(1e-1, 1e-2, 0);
27 }
28
29 @Test
30 public void testIterationCheck() {
31 final int max = 10;
32 final SimpleUnivariateValueChecker checker = new SimpleUnivariateValueChecker(1e-1, 1e-2, max);
33 Assert.assertTrue(checker.converged(max, null, null));
34 Assert.assertTrue(checker.converged(max + 1, null, null));
35 }
36
37 @Test
38 public void testIterationCheckDisabled() {
39 final SimpleUnivariateValueChecker checker = new SimpleUnivariateValueChecker(1e-8, 1e-8);
40
41 final UnivariatePointValuePair a = new UnivariatePointValuePair(1d, 1d);
42 final UnivariatePointValuePair b = new UnivariatePointValuePair(10d, 10d);
43
44 Assert.assertFalse(checker.converged(-1, a, b));
45 Assert.assertFalse(checker.converged(0, a, b));
46 Assert.assertFalse(checker.converged(1000000, a, b));
47
48 Assert.assertTrue(checker.converged(-1, a, a));
49 Assert.assertTrue(checker.converged(-1, b, b));
50 }
51 }