/*
    * 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.statistics.distribution;
  
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.params.ParameterizedTest;
  import org.junit.jupiter.params.provider.ValueSource;
  
  /**
   * Test for {@link ArgumentUtils}.
   */
  class ArgumentUtilsTest {
      @ParameterizedTest
      @ValueSource(doubles = {Double.MIN_VALUE, 1, 2, 3, Double.MAX_VALUE})
      void testIsFiniteStrictlyPositiveTrue(double x) {
          Assertions.assertTrue(ArgumentUtils.isFiniteStrictlyPositive(x), () -> Double.toString(x));
      }
  
      @ParameterizedTest
      @ValueSource(doubles = {0, -0.0, -Double.MIN_VALUE, -Double.MAX_VALUE,
          Double.POSITIVE_INFINITY, Double.NEGATIVE_INFINITY, Double.NaN})
      void testIsFiniteStrictlyPositiveFalse(double x) {
          Assertions.assertFalse(ArgumentUtils.isFiniteStrictlyPositive(x), () -> Double.toString(x));
      }
  
      @ParameterizedTest
      @ValueSource(doubles = {-0.0, 0.0, Double.MIN_VALUE, 1 - 0x1.0p-53, 1})
      void testCheckProbability(double p) {
          Assertions.assertDoesNotThrow(() -> ArgumentUtils.checkProbability(p), () -> Double.toString(p));
      }
  
      @ParameterizedTest
      @ValueSource(doubles = {-Double.MIN_VALUE, -0.1, -1, -2, 1.0 + 0x1.0p-52, 1.1, -Double.MAX_VALUE,
          Double.POSITIVE_INFINITY, Double.NEGATIVE_INFINITY, Double.NaN})
      void testCheckProbabilityThrows(double p) {
          Assertions.assertThrows(IllegalArgumentException.class,
              () -> ArgumentUtils.checkProbability(p), () -> Double.toString(p));
      }
  }