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Add some tests of NaNs 

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1503623 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Sebastian Bazley 2013-07-16 09:15:32 +00:00
parent 82a9e0d06f
commit 91c5101c33
1 changed files with 59 additions and 0 deletions
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59
src/test/java/org/apache/commons/math3/stat/FrequencyTest.java
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@ -24,6 +24,7 @@ import java.util.List;
import org.apache.commons.math3.TestUtils;
import org.apache.commons.math3.exception.MathIllegalArgumentException;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
@ -357,5 +358,63 @@ public final class FrequencyTest {
Assert.assertEquals("2", mode.get(0));
Assert.assertFalse(mode.contains("1"));
Assert.assertTrue(mode.contains("2"));
try {
f.addValue(Double.valueOf(Double.NaN));
Assert.fail("Expected MathIllegalArgumentException");
} catch (MathIllegalArgumentException e) {
// expected
}
}
@Test
public void testModeDoubleNan() {
List<Comparable<?>> mode;
f.addValue(Double.valueOf(Double.NaN));
f.addValue(Double.valueOf(Double.NaN));
f.addValue(Double.valueOf(Double.NaN));
f.addValue(Double.valueOf(Double.NEGATIVE_INFINITY));
f.addValue(Double.valueOf(Double.POSITIVE_INFINITY));
f.addValue(Double.valueOf(Double.NEGATIVE_INFINITY));
f.addValue(Double.valueOf(Double.POSITIVE_INFINITY));
f.addValue(Double.valueOf(Double.NEGATIVE_INFINITY));
f.addValue(Double.valueOf(Double.POSITIVE_INFINITY));
mode = f.getMode();
Assert.assertEquals(3, mode.size());
Assert.assertEquals(Double.valueOf(Double.NEGATIVE_INFINITY), mode.get(0));
Assert.assertEquals(Double.valueOf(Double.POSITIVE_INFINITY), mode.get(1));
Assert.assertEquals(Double.valueOf(Double.NaN), mode.get(2));
try {
f.addValue(Float.valueOf(Float.NaN));
Assert.fail("Expected MathIllegalArgumentException");
} catch (MathIllegalArgumentException e) {
// expected
}
}
@Test
public void testModeFloatNan() {
List<Comparable<?>> mode;
f.addValue(Float.valueOf(Float.NaN));
f.addValue(Float.valueOf(Float.NaN));
f.addValue(Float.valueOf(Float.NaN));
f.addValue(Float.valueOf(Float.NEGATIVE_INFINITY));
f.addValue(Float.valueOf(Float.POSITIVE_INFINITY));
f.addValue(Float.valueOf(Float.NEGATIVE_INFINITY));
f.addValue(Float.valueOf(Float.POSITIVE_INFINITY));
f.addValue(Float.valueOf(Float.NEGATIVE_INFINITY));
f.addValue(Float.valueOf(Float.POSITIVE_INFINITY));
mode = f.getMode();
Assert.assertEquals(3, mode.size());
Assert.assertEquals(Float.valueOf(Float.NEGATIVE_INFINITY), mode.get(0));
Assert.assertEquals(Float.valueOf(Float.POSITIVE_INFINITY), mode.get(1));
Assert.assertEquals(Float.valueOf(Float.NaN), mode.get(2));
try {
f.addValue(Double.valueOf(Double.NaN));
Assert.fail("Expected MathIllegalArgumentException");
} catch (MathIllegalArgumentException e) {
// expected
}
}
}