| /* |
| * 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.junit.jupiter.api.Test; |
| |
| /** |
| * Unit tests {@link org.apache.commons.lang3.math.IEEE754rUtils}. |
| */ |
| public class IEEE754rUtilsTest { |
| |
| @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); |
| } |
| |
| } |