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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.lang3.math;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import org.apache.commons.lang3.AbstractLangTest;
import org.junit.jupiter.api.Test;
/**
* Unit tests {@link org.apache.commons.lang3.math.IEEE754rUtils}.
*/
public class IEEE754rUtilsTest extends AbstractLangTest {
@Test
public void testConstructorExists() {
new IEEE754rUtils();
}
@Test
public void testEnforceExceptions() {
assertThrows(
NullPointerException.class,
() -> IEEE754rUtils.min( (float[]) null),
"IllegalArgumentException expected for null input");
assertThrows(
IllegalArgumentException.class,
IEEE754rUtils::min,
"IllegalArgumentException expected for empty input");
assertThrows(
NullPointerException.class,
() -> IEEE754rUtils.max( (float[]) null),
"IllegalArgumentException expected for null input");
assertThrows(
IllegalArgumentException.class,
IEEE754rUtils::max,
"IllegalArgumentException expected for empty input");
assertThrows(
NullPointerException.class,
() -> IEEE754rUtils.min( (double[]) null),
"IllegalArgumentException expected for null input");
assertThrows(
IllegalArgumentException.class,
IEEE754rUtils::min,
"IllegalArgumentException expected for empty input");
assertThrows(
NullPointerException.class,
() -> IEEE754rUtils.max( (double[]) null),
"IllegalArgumentException expected for null input");
assertThrows(
IllegalArgumentException.class,
IEEE754rUtils::max,
"IllegalArgumentException expected for empty input");
}
@Test
public void testLang381() {
assertEquals(1.2, IEEE754rUtils.min(1.2, 2.5, Double.NaN), 0.01);
assertEquals(2.5, IEEE754rUtils.max(1.2, 2.5, Double.NaN), 0.01);
assertTrue(Double.isNaN(IEEE754rUtils.max(Double.NaN, Double.NaN, Double.NaN)));
assertEquals(1.2f, IEEE754rUtils.min(1.2f, 2.5f, Float.NaN), 0.01);
assertEquals(2.5f, IEEE754rUtils.max(1.2f, 2.5f, Float.NaN), 0.01);
assertTrue(Float.isNaN(IEEE754rUtils.max(Float.NaN, Float.NaN, Float.NaN)));
final double[] a = { 1.2, Double.NaN, 3.7, 27.0, 42.0, Double.NaN };
assertEquals(42.0, IEEE754rUtils.max(a), 0.01);
assertEquals(1.2, IEEE754rUtils.min(a), 0.01);
final double[] b = { Double.NaN, 1.2, Double.NaN, 3.7, 27.0, 42.0, Double.NaN };
assertEquals(42.0, IEEE754rUtils.max(b), 0.01);
assertEquals(1.2, IEEE754rUtils.min(b), 0.01);
final float[] aF = { 1.2f, Float.NaN, 3.7f, 27.0f, 42.0f, Float.NaN };
assertEquals(1.2f, IEEE754rUtils.min(aF), 0.01);
assertEquals(42.0f, IEEE754rUtils.max(aF), 0.01);
final float[] bF = { Float.NaN, 1.2f, Float.NaN, 3.7f, 27.0f, 42.0f, Float.NaN };
assertEquals(1.2f, IEEE754rUtils.min(bF), 0.01);
assertEquals(42.0f, IEEE754rUtils.max(bF), 0.01);
}
}
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