/*
    * 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.
   */
  
  /*
   * This is not the original file distributed by the Apache Software Foundation
   * It has been modified by the Hipparchus project
   */
  package org.hipparchus.distribution.continuous;
  
  import org.hipparchus.util.Precision;
  import org.junit.Assert;
  import org.junit.Test;
  
  /**
   * Test cases for LaplaceDistribution.
   */
  public class LaplaceDistributionTest extends RealDistributionAbstractTest {
  
      @Test
      public void testParameters() {
          LaplaceDistribution d = makeDistribution();
          Assert.assertEquals(0, d.getLocation(), Precision.EPSILON);
          Assert.assertEquals(1, d.getScale(), Precision.EPSILON);
      }
  
      @Test
      public void testSupport() {
          LaplaceDistribution d = makeDistribution();
          Assert.assertTrue(Double.isInfinite(d.getSupportLowerBound()));
          Assert.assertTrue(Double.isInfinite(d.getSupportUpperBound()));
          Assert.assertTrue(d.isSupportConnected());
      }
  
      @Override
      public LaplaceDistribution makeDistribution() {
          return new LaplaceDistribution(0, 1);
      }
  
      @Override
      public double[] makeCumulativeTestPoints() {
          return new double[] {
              -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5
          };
      }
  
      @Override
      public double[] makeDensityTestValues() {
          return new double[] {
              0.003368973, 0.009157819, 0.024893534, 0.067667642, 0.183939721,
              0.500000000, 0.183939721, 0.067667642, 0.024893534, 0.009157819, 0.003368973
          };
      }
  
      @Override
      public double[] makeCumulativeTestValues() {
          return new double[] {
              0.003368973, 0.009157819, 0.024893534, 0.067667642, 0.183939721,
              0.500000000, 0.816060279, 0.932332358, 0.975106466, 0.990842181, 0.996631027
          };
      }
  
  }