/*
    * 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
    *
    *      https://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.apache.commons.lang3.LangAssertions.assertIllegalArgumentException;
  import static org.apache.commons.lang3.LangAssertions.assertNullPointerException;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import org.apache.commons.lang3.AbstractLangTest;
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link org.apache.commons.lang3.math.IEEE754rUtils}.
   */
  class IEEE754rUtilsTest extends AbstractLangTest {
  
      @Test
      void testConstructorExists() {
          new IEEE754rUtils();
      }
  
      @Test
      void testEnforceExceptions() {
          assertNullPointerException(() -> IEEE754rUtils.min((float[]) null), "IllegalArgumentException expected for null input");
          assertIllegalArgumentException(IEEE754rUtils::min, "IllegalArgumentException expected for empty input");
          assertNullPointerException(() -> IEEE754rUtils.max((float[]) null), "IllegalArgumentException expected for null input");
          assertIllegalArgumentException(IEEE754rUtils::max, "IllegalArgumentException expected for empty input");
          assertNullPointerException(() -> IEEE754rUtils.min((double[]) null), "IllegalArgumentException expected for null input");
          assertIllegalArgumentException(IEEE754rUtils::min, "IllegalArgumentException expected for empty input");
          assertNullPointerException(() -> IEEE754rUtils.max((double[]) null), "IllegalArgumentException expected for null input");
          assertIllegalArgumentException(IEEE754rUtils::max, "IllegalArgumentException expected for empty input");
      }
  
      @Test
      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);
      }
  
  }