1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.rng.sampling.distribution;
18
19 import org.apache.commons.rng.RestorableUniformRandomProvider;
20 import org.apache.commons.rng.simple.RandomSource;
21 import org.junit.Test;
22
23 /**
24 * Test for the {@link BoxMullerGaussianSampler}. The tests hit edge cases for the sampler.
25 */
26 public class BoxMullerGaussianSamplerTest {
27 /**
28 * Test the constructor with a bad standard deviation.
29 */
30 @Test(expected = IllegalArgumentException.class)
31 public void testConstructorThrowsWithZeroStandardDeviation() {
32 final RestorableUniformRandomProvider rng =
33 RandomSource.create(RandomSource.SPLIT_MIX_64);
34 final double mean = 1;
35 final double standardDeviation = 0;
36 @SuppressWarnings("unused")
37 final BoxMullerGaussianSampler sampler =
38 new BoxMullerGaussianSampler(rng, mean, standardDeviation);
39 }
40 }