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websites/production/commons/content/proper/commons-rng/commons-rng-core/xref-test/org/apache/commons/rng/core/ProvidersCommonParametricTest.html
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websites/production/commons/content/proper/commons-rng/commons-rng-core/xref-test/org/apache/commons/rng/core/ProvidersCommonParametricTest.html
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+++
websites/production/commons/content/proper/commons-rng/commons-rng-core/xref-test/org/apache/commons/rng/core/ProvidersCommonParametricTest.html
Mon Dec 12 16:27:09 2016
@@ -0,0 +1,628 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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+<html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en" lang="en">
+<head><meta http-equiv="content-type" content="text/html; charset=UTF-8" />
+<title>ProvidersCommonParametricTest xref</title>
+<link type="text/css" rel="stylesheet" href="../../../../../stylesheet.css" />
+</head>
+<body>
+<div id="overview"><a
href="../../../../../../testapidocs/org/apache/commons/rng/core/ProvidersCommonParametricTest.html">View
Javadoc</a></div><pre>
+<a class="jxr_linenumber" name="L1" href="#L1">1</a> <em
class="jxr_comment">/*</em>
+<a class="jxr_linenumber" name="L2" href="#L2">2</a> <em
class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under
one or more</em>
+<a class="jxr_linenumber" name="L3" href="#L3">3</a> <em
class="jxr_comment"> * contributor license agreements. See the NOTICE file
distributed with</em>
+<a class="jxr_linenumber" name="L4" href="#L4">4</a> <em
class="jxr_comment"> * this work for additional information regarding copyright
ownership.</em>
+<a class="jxr_linenumber" name="L5" href="#L5">5</a> <em
class="jxr_comment"> * The ASF licenses this file to You under the Apache
License, Version 2.0</em>
+<a class="jxr_linenumber" name="L6" href="#L6">6</a> <em
class="jxr_comment"> * (the "License"); you may not use this file except in
compliance with</em>
+<a class="jxr_linenumber" name="L7" href="#L7">7</a> <em
class="jxr_comment"> * the License. You may obtain a copy of the License
at</em>
+<a class="jxr_linenumber" name="L8" href="#L8">8</a> <em
class="jxr_comment"> *</em>
+<a class="jxr_linenumber" name="L9" href="#L9">9</a> <em
class="jxr_comment"> * <a href="http://www.apache.org/licenses/LICENSE-2.";
target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.</a>0</em>
+<a class="jxr_linenumber" name="L10" href="#L10">10</a> <em
class="jxr_comment"> *</em>
+<a class="jxr_linenumber" name="L11" href="#L11">11</a> <em
class="jxr_comment"> * Unless required by applicable law or agreed to in
writing, software</em>
+<a class="jxr_linenumber" name="L12" href="#L12">12</a> <em
class="jxr_comment"> * distributed under the License is distributed on an "AS
IS" BASIS,</em>
+<a class="jxr_linenumber" name="L13" href="#L13">13</a> <em
class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
express or implied.</em>
+<a class="jxr_linenumber" name="L14" href="#L14">14</a> <em
class="jxr_comment"> * See the License for the specific language governing
permissions and</em>
+<a class="jxr_linenumber" name="L15" href="#L15">15</a> <em
class="jxr_comment"> * limitations under the License.</em>
+<a class="jxr_linenumber" name="L16" href="#L16">16</a> <em
class="jxr_comment"> */</em>
+<a class="jxr_linenumber" name="L17" href="#L17">17</a> <strong
class="jxr_keyword">package</strong> org.apache.commons.rng.core;
+<a class="jxr_linenumber" name="L18" href="#L18">18</a>
+<a class="jxr_linenumber" name="L19" href="#L19">19</a> <strong
class="jxr_keyword">import</strong> java.util.Arrays;
+<a class="jxr_linenumber" name="L20" href="#L20">20</a> <strong
class="jxr_keyword">import</strong> java.util.List;
+<a class="jxr_linenumber" name="L21" href="#L21">21</a> <strong
class="jxr_keyword">import</strong> java.util.ArrayList;
+<a class="jxr_linenumber" name="L22" href="#L22">22</a> <strong
class="jxr_keyword">import</strong> java.util.concurrent.Callable;
+<a class="jxr_linenumber" name="L23" href="#L23">23</a> <strong
class="jxr_keyword">import</strong> java.io.IOException;
+<a class="jxr_linenumber" name="L24" href="#L24">24</a> <strong
class="jxr_keyword">import</strong> java.io.ObjectOutputStream;
+<a class="jxr_linenumber" name="L25" href="#L25">25</a> <strong
class="jxr_keyword">import</strong> java.io.ObjectInputStream;
+<a class="jxr_linenumber" name="L26" href="#L26">26</a> <strong
class="jxr_keyword">import</strong> java.io.ByteArrayOutputStream;
+<a class="jxr_linenumber" name="L27" href="#L27">27</a> <strong
class="jxr_keyword">import</strong> java.io.ByteArrayInputStream;
+<a class="jxr_linenumber" name="L28" href="#L28">28</a>
+<a class="jxr_linenumber" name="L29" href="#L29">29</a> <strong
class="jxr_keyword">import</strong> org.junit.Assert;
+<a class="jxr_linenumber" name="L30" href="#L30">30</a> <strong
class="jxr_keyword">import</strong> org.junit.Test;
+<a class="jxr_linenumber" name="L31" href="#L31">31</a> <strong
class="jxr_keyword">import</strong> org.junit.Assume;
+<a class="jxr_linenumber" name="L32" href="#L32">32</a> <strong
class="jxr_keyword">import</strong> org.junit.Ignore;
+<a class="jxr_linenumber" name="L33" href="#L33">33</a> <strong
class="jxr_keyword">import</strong> org.junit.runner.RunWith;
+<a class="jxr_linenumber" name="L34" href="#L34">34</a> <strong
class="jxr_keyword">import</strong> org.junit.runners.Parameterized;
+<a class="jxr_linenumber" name="L35" href="#L35">35</a> <strong
class="jxr_keyword">import</strong> org.junit.runners.Parameterized.Parameters;
+<a class="jxr_linenumber" name="L36" href="#L36">36</a>
+<a class="jxr_linenumber" name="L37" href="#L37">37</a> <strong
class="jxr_keyword">import</strong>
org.apache.commons.rng.UniformRandomProvider;
+<a class="jxr_linenumber" name="L38" href="#L38">38</a> <strong
class="jxr_keyword">import</strong>
org.apache.commons.rng.RestorableUniformRandomProvider;
+<a class="jxr_linenumber" name="L39" href="#L39">39</a> <strong
class="jxr_keyword">import</strong> org.apache.commons.rng.RandomProviderState;
+<a class="jxr_linenumber" name="L40" href="#L40">40</a>
+<a class="jxr_linenumber" name="L41" href="#L41">41</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L42" href="#L42">42</a> <em
class="jxr_javadoccomment"> * Tests which all generators must pass.</em>
+<a class="jxr_linenumber" name="L43" href="#L43">43</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L44" href="#L44">44</a>
@RunWith(value=Parameterized.<strong class="jxr_keyword">class</strong>)
+<a class="jxr_linenumber" name="L45" href="#L45">45</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong>
<a
href="../../../../../org/apache/commons/rng/core/ProvidersCommonParametricTest.html">ProvidersCommonParametricTest</a>
{
+<a class="jxr_linenumber" name="L46" href="#L46">46</a> <em
class="jxr_javadoccomment">/** RNG under test. */</em>
+<a class="jxr_linenumber" name="L47" href="#L47">47</a> <strong
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong>
RestorableUniformRandomProvider generator;
+<a class="jxr_linenumber" name="L48" href="#L48">48</a>
+<a class="jxr_linenumber" name="L49" href="#L49">49</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L50" href="#L50">50</a> <em
class="jxr_javadoccomment"> * Initializes generator instance.</em>
+<a class="jxr_linenumber" name="L51" href="#L51">51</a> <em
class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L52" href="#L52">52</a> <em
class="jxr_javadoccomment"> * @param rng RNG to be tested.</em>
+<a class="jxr_linenumber" name="L53" href="#L53">53</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L54" href="#L54">54</a> <strong
class="jxr_keyword">public</strong> <a
href="../../../../../org/apache/commons/rng/core/ProvidersCommonParametricTest.html">ProvidersCommonParametricTest</a>(RestorableUniformRandomProvider
rng) {
+<a class="jxr_linenumber" name="L55" href="#L55">55</a> generator =
rng;
+<a class="jxr_linenumber" name="L56" href="#L56">56</a> }
+<a class="jxr_linenumber" name="L57" href="#L57">57</a>
+<a class="jxr_linenumber" name="L58" href="#L58">58</a> @Parameters(name
= <span class="jxr_string">"{index}: data={0}"</span>)
+<a class="jxr_linenumber" name="L59" href="#L59">59</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong>
Iterable<RestorableUniformRandomProvider[]> getList() {
+<a class="jxr_linenumber" name="L60" href="#L60">60</a> <strong
class="jxr_keyword">return</strong> ProvidersList.list();
+<a class="jxr_linenumber" name="L61" href="#L61">61</a> }
+<a class="jxr_linenumber" name="L62" href="#L62">62</a>
+<a class="jxr_linenumber" name="L63" href="#L63">63</a>
+<a class="jxr_linenumber" name="L64" href="#L64">64</a> <em
class="jxr_comment">// Precondition tests</em>
+<a class="jxr_linenumber" name="L65" href="#L65">65</a>
+<a class="jxr_linenumber" name="L66" href="#L66">66</a>
@Test(expected=IllegalArgumentException.<strong
class="jxr_keyword">class</strong>)
+<a class="jxr_linenumber" name="L67" href="#L67">67</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testPreconditionNextInt1() {
+<a class="jxr_linenumber" name="L68" href="#L68">68</a>
generator.nextInt(-1);
+<a class="jxr_linenumber" name="L69" href="#L69">69</a> }
+<a class="jxr_linenumber" name="L70" href="#L70">70</a>
+<a class="jxr_linenumber" name="L71" href="#L71">71</a>
@Test(expected=IllegalArgumentException.<strong
class="jxr_keyword">class</strong>)
+<a class="jxr_linenumber" name="L72" href="#L72">72</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testPreconditionNextInt2() {
+<a class="jxr_linenumber" name="L73" href="#L73">73</a>
generator.nextInt(0);
+<a class="jxr_linenumber" name="L74" href="#L74">74</a> }
+<a class="jxr_linenumber" name="L75" href="#L75">75</a>
+<a class="jxr_linenumber" name="L76" href="#L76">76</a>
@Test(expected=IllegalArgumentException.<strong
class="jxr_keyword">class</strong>)
+<a class="jxr_linenumber" name="L77" href="#L77">77</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testPreconditionNextLong1() {
+<a class="jxr_linenumber" name="L78" href="#L78">78</a>
generator.nextLong(-1);
+<a class="jxr_linenumber" name="L79" href="#L79">79</a> }
+<a class="jxr_linenumber" name="L80" href="#L80">80</a>
+<a class="jxr_linenumber" name="L81" href="#L81">81</a>
@Test(expected=IllegalArgumentException.<strong
class="jxr_keyword">class</strong>)
+<a class="jxr_linenumber" name="L82" href="#L82">82</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testPreconditionNextLong2() {
+<a class="jxr_linenumber" name="L83" href="#L83">83</a>
generator.nextLong(0);
+<a class="jxr_linenumber" name="L84" href="#L84">84</a> }
+<a class="jxr_linenumber" name="L85" href="#L85">85</a>
+<a class="jxr_linenumber" name="L86" href="#L86">86</a>
@Test(expected=IndexOutOfBoundsException.<strong
class="jxr_keyword">class</strong>)
+<a class="jxr_linenumber" name="L87" href="#L87">87</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testPreconditionNextBytes1() {
+<a class="jxr_linenumber" name="L88" href="#L88">88</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong>
size = 10;
+<a class="jxr_linenumber" name="L89" href="#L89">89</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> num
= 1;
+<a class="jxr_linenumber" name="L90" href="#L90">90</a> <strong
class="jxr_keyword">final</strong> byte[] buf = <strong
class="jxr_keyword">new</strong> byte[size];
+<a class="jxr_linenumber" name="L91" href="#L91">91</a>
generator.nextBytes(buf, -1, num);
+<a class="jxr_linenumber" name="L92" href="#L92">92</a> }
+<a class="jxr_linenumber" name="L93" href="#L93">93</a>
@Test(expected=IndexOutOfBoundsException.<strong
class="jxr_keyword">class</strong>)
+<a class="jxr_linenumber" name="L94" href="#L94">94</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testPreconditionNextBytes2() {
+<a class="jxr_linenumber" name="L95" href="#L95">95</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong>
size = 10;
+<a class="jxr_linenumber" name="L96" href="#L96">96</a> <strong
class="jxr_keyword">final</strong> byte[] buf = <strong
class="jxr_keyword">new</strong> byte[size];
+<a class="jxr_linenumber" name="L97" href="#L97">97</a>
generator.nextBytes(buf, size, 0);
+<a class="jxr_linenumber" name="L98" href="#L98">98</a> }
+<a class="jxr_linenumber" name="L99" href="#L99">99</a>
@Test(expected=IndexOutOfBoundsException.<strong
class="jxr_keyword">class</strong>)
+<a class="jxr_linenumber" name="L100" href="#L100">100</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testPreconditionNextBytes3() {
+<a class="jxr_linenumber" name="L101" href="#L101">101</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong>
size = 10;
+<a class="jxr_linenumber" name="L102" href="#L102">102</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong>
offset = 2;
+<a class="jxr_linenumber" name="L103" href="#L103">103</a> <strong
class="jxr_keyword">final</strong> byte[] buf = <strong
class="jxr_keyword">new</strong> byte[size];
+<a class="jxr_linenumber" name="L104" href="#L104">104</a>
generator.nextBytes(buf, offset, size - offset + 1);
+<a class="jxr_linenumber" name="L105" href="#L105">105</a> }
+<a class="jxr_linenumber" name="L106" href="#L106">106</a>
@Test(expected=IndexOutOfBoundsException.<strong
class="jxr_keyword">class</strong>)
+<a class="jxr_linenumber" name="L107" href="#L107">107</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testPreconditionNextBytes4() {
+<a class="jxr_linenumber" name="L108" href="#L108">108</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong>
size = 10;
+<a class="jxr_linenumber" name="L109" href="#L109">109</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong>
offset = 1;
+<a class="jxr_linenumber" name="L110" href="#L110">110</a> <strong
class="jxr_keyword">final</strong> byte[] buf = <strong
class="jxr_keyword">new</strong> byte[size];
+<a class="jxr_linenumber" name="L111" href="#L111">111</a>
generator.nextBytes(buf, offset, -1);
+<a class="jxr_linenumber" name="L112" href="#L112">112</a> }
+<a class="jxr_linenumber" name="L113" href="#L113">113</a>
+<a class="jxr_linenumber" name="L114" href="#L114">114</a>
+<a class="jxr_linenumber" name="L115" href="#L115">115</a> <em
class="jxr_comment">// Uniformity tests</em>
+<a class="jxr_linenumber" name="L116" href="#L116">116</a>
+<a class="jxr_linenumber" name="L117" href="#L117">117</a> @Test
+<a class="jxr_linenumber" name="L118" href="#L118">118</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testUniformNextBytesFullBuffer() {
+<a class="jxr_linenumber" name="L119" href="#L119">119</a> <em
class="jxr_comment">// Value chosen to exercise all the code lines in the</em>
+<a class="jxr_linenumber" name="L120" href="#L120">120</a> <em
class="jxr_comment">// "nextBytes" methods.</em>
+<a class="jxr_linenumber" name="L121" href="#L121">121</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong>
size = 23;
+<a class="jxr_linenumber" name="L122" href="#L122">122</a> <strong
class="jxr_keyword">final</strong> byte[] buffer = <strong
class="jxr_keyword">new</strong> byte[size];
+<a class="jxr_linenumber" name="L123" href="#L123">123</a>
+<a class="jxr_linenumber" name="L124" href="#L124">124</a> <strong
class="jxr_keyword">final</strong> Runnable nextMethod = <strong
class="jxr_keyword">new</strong> Runnable() {
+<a class="jxr_linenumber" name="L125" href="#L125">125</a>
@Override
+<a class="jxr_linenumber" name="L126" href="#L126">126</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
run() {
+<a class="jxr_linenumber" name="L127" href="#L127">127</a>
generator.nextBytes(buffer);
+<a class="jxr_linenumber" name="L128" href="#L128">128</a> }
+<a class="jxr_linenumber" name="L129" href="#L129">129</a> };
+<a class="jxr_linenumber" name="L130" href="#L130">130</a>
+<a class="jxr_linenumber" name="L131" href="#L131">131</a>
Assert.assertTrue(isUniformNextBytes(buffer, 0, size, nextMethod));
+<a class="jxr_linenumber" name="L132" href="#L132">132</a> }
+<a class="jxr_linenumber" name="L133" href="#L133">133</a>
+<a class="jxr_linenumber" name="L134" href="#L134">134</a> @Test
+<a class="jxr_linenumber" name="L135" href="#L135">135</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testUniformNextBytesPartialBuffer() {
+<a class="jxr_linenumber" name="L136" href="#L136">136</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong>
totalSize = 1234;
+<a class="jxr_linenumber" name="L137" href="#L137">137</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong>
offset = 567;
+<a class="jxr_linenumber" name="L138" href="#L138">138</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong>
size = 89;
+<a class="jxr_linenumber" name="L139" href="#L139">139</a>
+<a class="jxr_linenumber" name="L140" href="#L140">140</a> <strong
class="jxr_keyword">final</strong> byte[] buffer = <strong
class="jxr_keyword">new</strong> byte[totalSize];
+<a class="jxr_linenumber" name="L141" href="#L141">141</a>
+<a class="jxr_linenumber" name="L142" href="#L142">142</a> <strong
class="jxr_keyword">final</strong> Runnable nextMethod = <strong
class="jxr_keyword">new</strong> Runnable() {
+<a class="jxr_linenumber" name="L143" href="#L143">143</a>
@Override
+<a class="jxr_linenumber" name="L144" href="#L144">144</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
run() {
+<a class="jxr_linenumber" name="L145" href="#L145">145</a>
generator.nextBytes(buffer, offset, size);
+<a class="jxr_linenumber" name="L146" href="#L146">146</a> }
+<a class="jxr_linenumber" name="L147" href="#L147">147</a> };
+<a class="jxr_linenumber" name="L148" href="#L148">148</a>
+<a class="jxr_linenumber" name="L149" href="#L149">149</a> <em
class="jxr_comment">// Test should pass for the part of the buffer where values
are put.</em>
+<a class="jxr_linenumber" name="L150" href="#L150">150</a>
Assert.assertTrue(isUniformNextBytes(buffer, offset, offset + size,
nextMethod));
+<a class="jxr_linenumber" name="L151" href="#L151">151</a>
+<a class="jxr_linenumber" name="L152" href="#L152">152</a> <em
class="jxr_comment">// Test must fail for the parts of the buffer where no
values are put.</em>
+<a class="jxr_linenumber" name="L153" href="#L153">153</a>
Assert.assertFalse(isUniformNextBytes(buffer, 0, offset, nextMethod));
+<a class="jxr_linenumber" name="L154" href="#L154">154</a>
Assert.assertFalse(isUniformNextBytes(buffer, offset + size, buffer.length,
nextMethod));
+<a class="jxr_linenumber" name="L155" href="#L155">155</a> }
+<a class="jxr_linenumber" name="L156" href="#L156">156</a>
+<a class="jxr_linenumber" name="L157" href="#L157">157</a> @Test
+<a class="jxr_linenumber" name="L158" href="#L158">158</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testUniformNextIntegerInRange() {
+<a class="jxr_linenumber" name="L159" href="#L159">159</a>
checkNextIntegerInRange(4, 1000);
+<a class="jxr_linenumber" name="L160" href="#L160">160</a>
checkNextIntegerInRange(10, 1000);
+<a class="jxr_linenumber" name="L161" href="#L161">161</a>
checkNextIntegerInRange(12, 1000);
+<a class="jxr_linenumber" name="L162" href="#L162">162</a>
checkNextIntegerInRange(31, 1000);
+<a class="jxr_linenumber" name="L163" href="#L163">163</a>
checkNextIntegerInRange(32, 1000);
+<a class="jxr_linenumber" name="L164" href="#L164">164</a>
checkNextIntegerInRange(2016128993, 1000);
+<a class="jxr_linenumber" name="L165" href="#L165">165</a>
checkNextIntegerInRange(1834691456, 1000);
+<a class="jxr_linenumber" name="L166" href="#L166">166</a>
checkNextIntegerInRange(869657561, 1000);
+<a class="jxr_linenumber" name="L167" href="#L167">167</a>
checkNextIntegerInRange(1570504788, 1000);
+<a class="jxr_linenumber" name="L168" href="#L168">168</a> }
+<a class="jxr_linenumber" name="L169" href="#L169">169</a>
+<a class="jxr_linenumber" name="L170" href="#L170">170</a> @Test
+<a class="jxr_linenumber" name="L171" href="#L171">171</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testUniformNextLongInRange() {
+<a class="jxr_linenumber" name="L172" href="#L172">172</a>
checkNextLongInRange(4, 1000);
+<a class="jxr_linenumber" name="L173" href="#L173">173</a>
checkNextLongInRange(11, 1000);
+<a class="jxr_linenumber" name="L174" href="#L174">174</a>
checkNextLongInRange(19, 1000);
+<a class="jxr_linenumber" name="L175" href="#L175">175</a>
checkNextLongInRange(31, 1000);
+<a class="jxr_linenumber" name="L176" href="#L176">176</a>
checkNextLongInRange(32, 1000);
+<a class="jxr_linenumber" name="L177" href="#L177">177</a>
+<a class="jxr_linenumber" name="L178" href="#L178">178</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> q
= Long.MAX_VALUE / 4;
+<a class="jxr_linenumber" name="L179" href="#L179">179</a>
checkNextLongInRange(q, 1000);
+<a class="jxr_linenumber" name="L180" href="#L180">180</a>
checkNextLongInRange(2 * q, 1000);
+<a class="jxr_linenumber" name="L181" href="#L181">181</a>
checkNextLongInRange(3 * q, 1000);
+<a class="jxr_linenumber" name="L182" href="#L182">182</a> }
+<a class="jxr_linenumber" name="L183" href="#L183">183</a>
+<a class="jxr_linenumber" name="L184" href="#L184">184</a> @Test
+<a class="jxr_linenumber" name="L185" href="#L185">185</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testUniformNextFloat() {
+<a class="jxr_linenumber" name="L186" href="#L186">186</a>
checkNextFloat(1000);
+<a class="jxr_linenumber" name="L187" href="#L187">187</a> }
+<a class="jxr_linenumber" name="L188" href="#L188">188</a>
+<a class="jxr_linenumber" name="L189" href="#L189">189</a> @Test
+<a class="jxr_linenumber" name="L190" href="#L190">190</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testUniformNextDouble() {
+<a class="jxr_linenumber" name="L191" href="#L191">191</a>
checkNextDouble(1000);
+<a class="jxr_linenumber" name="L192" href="#L192">192</a> }
+<a class="jxr_linenumber" name="L193" href="#L193">193</a>
+<a class="jxr_linenumber" name="L194" href="#L194">194</a> @Test
+<a class="jxr_linenumber" name="L195" href="#L195">195</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testUniformNextIntRandomWalk() {
+<a class="jxr_linenumber" name="L196" href="#L196">196</a> <strong
class="jxr_keyword">final</strong> Callable<Boolean> nextMethod = <strong
class="jxr_keyword">new</strong> Callable<Boolean>() {
+<a class="jxr_linenumber" name="L197" href="#L197">197</a>
@Override
+<a class="jxr_linenumber" name="L198" href="#L198">198</a> <strong
class="jxr_keyword">public</strong> Boolean call() <strong
class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="L199" href="#L199">199</a>
<strong class="jxr_keyword">return</strong> generator.nextInt() >= 0;
+<a class="jxr_linenumber" name="L200" href="#L200">200</a> }
+<a class="jxr_linenumber" name="L201" href="#L201">201</a> };
+<a class="jxr_linenumber" name="L202" href="#L202">202</a>
+<a class="jxr_linenumber" name="L203" href="#L203">203</a>
checkRandomWalk(1000, nextMethod);
+<a class="jxr_linenumber" name="L204" href="#L204">204</a> }
+<a class="jxr_linenumber" name="L205" href="#L205">205</a>
+<a class="jxr_linenumber" name="L206" href="#L206">206</a> @Test
+<a class="jxr_linenumber" name="L207" href="#L207">207</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testUniformNextLongRandomWalk() {
+<a class="jxr_linenumber" name="L208" href="#L208">208</a> <strong
class="jxr_keyword">final</strong> Callable<Boolean> nextMethod = <strong
class="jxr_keyword">new</strong> Callable<Boolean>() {
+<a class="jxr_linenumber" name="L209" href="#L209">209</a>
@Override
+<a class="jxr_linenumber" name="L210" href="#L210">210</a> <strong
class="jxr_keyword">public</strong> Boolean call() <strong
class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="L211" href="#L211">211</a>
<strong class="jxr_keyword">return</strong> generator.nextLong() >= 0;
+<a class="jxr_linenumber" name="L212" href="#L212">212</a> }
+<a class="jxr_linenumber" name="L213" href="#L213">213</a> };
+<a class="jxr_linenumber" name="L214" href="#L214">214</a>
+<a class="jxr_linenumber" name="L215" href="#L215">215</a>
checkRandomWalk(1000, nextMethod);
+<a class="jxr_linenumber" name="L216" href="#L216">216</a> }
+<a class="jxr_linenumber" name="L217" href="#L217">217</a>
+<a class="jxr_linenumber" name="L218" href="#L218">218</a> @Test
+<a class="jxr_linenumber" name="L219" href="#L219">219</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testUniformNextBooleanRandomWalk() {
+<a class="jxr_linenumber" name="L220" href="#L220">220</a> <strong
class="jxr_keyword">final</strong> Callable<Boolean> nextMethod = <strong
class="jxr_keyword">new</strong> Callable<Boolean>() {
+<a class="jxr_linenumber" name="L221" href="#L221">221</a>
@Override
+<a class="jxr_linenumber" name="L222" href="#L222">222</a> <strong
class="jxr_keyword">public</strong> Boolean call() <strong
class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="L223" href="#L223">223</a>
<strong class="jxr_keyword">return</strong> generator.nextBoolean();
+<a class="jxr_linenumber" name="L224" href="#L224">224</a> }
+<a class="jxr_linenumber" name="L225" href="#L225">225</a> };
+<a class="jxr_linenumber" name="L226" href="#L226">226</a>
+<a class="jxr_linenumber" name="L227" href="#L227">227</a>
checkRandomWalk(1000, nextMethod);
+<a class="jxr_linenumber" name="L228" href="#L228">228</a> }
+<a class="jxr_linenumber" name="L229" href="#L229">229</a>
+<a class="jxr_linenumber" name="L230" href="#L230">230</a> <em
class="jxr_comment">// State save and restore tests.</em>
+<a class="jxr_linenumber" name="L231" href="#L231">231</a>
+<a class="jxr_linenumber" name="L232" href="#L232">232</a> @Test
+<a class="jxr_linenumber" name="L233" href="#L233">233</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testStateSettable() {
+<a class="jxr_linenumber" name="L234" href="#L234">234</a> <em
class="jxr_comment">// Should be fairly large in order to ensure that all the
internal</em>
+<a class="jxr_linenumber" name="L235" href="#L235">235</a> <em
class="jxr_comment">// state is away from its initial settings.</em>
+<a class="jxr_linenumber" name="L236" href="#L236">236</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> n =
10000;
+<a class="jxr_linenumber" name="L237" href="#L237">237</a>
+<a class="jxr_linenumber" name="L238" href="#L238">238</a> <em
class="jxr_comment">// Save.</em>
+<a class="jxr_linenumber" name="L239" href="#L239">239</a> <strong
class="jxr_keyword">final</strong> RandomProviderState state =
generator.saveState();
+<a class="jxr_linenumber" name="L240" href="#L240">240</a> <em
class="jxr_comment">// Store some values.</em>
+<a class="jxr_linenumber" name="L241" href="#L241">241</a> <strong
class="jxr_keyword">final</strong> List<Number> listOrig = makeList(n);
+<a class="jxr_linenumber" name="L242" href="#L242">242</a> <em
class="jxr_comment">// Discard a few more.</em>
+<a class="jxr_linenumber" name="L243" href="#L243">243</a> <strong
class="jxr_keyword">final</strong> List<Number> listDiscard = makeList(n);
+<a class="jxr_linenumber" name="L244" href="#L244">244</a>
Assert.assertTrue(listDiscard.size() != 0);
+<a class="jxr_linenumber" name="L245" href="#L245">245</a>
Assert.assertFalse(listOrig.equals(listDiscard));
+<a class="jxr_linenumber" name="L246" href="#L246">246</a> <em
class="jxr_comment">// Reset.</em>
+<a class="jxr_linenumber" name="L247" href="#L247">247</a>
generator.restoreState(state);
+<a class="jxr_linenumber" name="L248" href="#L248">248</a> <em
class="jxr_comment">// Replay.</em>
+<a class="jxr_linenumber" name="L249" href="#L249">249</a> <strong
class="jxr_keyword">final</strong> List<Number> listReplay = makeList(n);
+<a class="jxr_linenumber" name="L250" href="#L250">250</a>
Assert.assertFalse(listOrig == listReplay);
+<a class="jxr_linenumber" name="L251" href="#L251">251</a> <em
class="jxr_comment">// Check that the restored state is the same as the
orginal.</em>
+<a class="jxr_linenumber" name="L252" href="#L252">252</a>
Assert.assertTrue(listOrig.equals(listReplay));
+<a class="jxr_linenumber" name="L253" href="#L253">253</a> }
+<a class="jxr_linenumber" name="L254" href="#L254">254</a>
+<a class="jxr_linenumber" name="L255" href="#L255">255</a>
@Test(expected=IllegalArgumentException.<strong
class="jxr_keyword">class</strong>)
+<a class="jxr_linenumber" name="L256" href="#L256">256</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testStateWrongSize() {
+<a class="jxr_linenumber" name="L257" href="#L257">257</a> <em
class="jxr_comment">// We don't know what is the state of "java.lang.Random":
skipping.</em>
+<a class="jxr_linenumber" name="L258" href="#L258">258</a>
Assume.assumeTrue(generator.toString().indexOf(<span
class="jxr_string">"JDKRandom"</span>) == -1);
+<a class="jxr_linenumber" name="L259" href="#L259">259</a>
+<a class="jxr_linenumber" name="L260" href="#L260">260</a> <strong
class="jxr_keyword">final</strong> RandomProviderState state = <strong
class="jxr_keyword">new</strong> <a
href="../../../../../org/apache/commons/rng/core/ProvidersCommonParametricTest.html">DummyGenerator</a>().saveState();
+<a class="jxr_linenumber" name="L261" href="#L261">261</a> <em
class="jxr_comment">// Try to restore with an invalid state (wrong size).</em>
+<a class="jxr_linenumber" name="L262" href="#L262">262</a>
generator.restoreState(state);
+<a class="jxr_linenumber" name="L263" href="#L263">263</a> }
+<a class="jxr_linenumber" name="L264" href="#L264">264</a>
+<a class="jxr_linenumber" name="L265" href="#L265">265</a>
@Test(expected=IllegalArgumentException.<strong
class="jxr_keyword">class</strong>)
+<a class="jxr_linenumber" name="L266" href="#L266">266</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testRestoreForeignState() {
+<a class="jxr_linenumber" name="L267" href="#L267">267</a>
generator.restoreState(<strong class="jxr_keyword">new</strong>
RandomProviderState() {});
+<a class="jxr_linenumber" name="L268" href="#L268">268</a> }
+<a class="jxr_linenumber" name="L269" href="#L269">269</a>
+<a class="jxr_linenumber" name="L270" href="#L270">270</a>
+<a class="jxr_linenumber" name="L271" href="#L271">271</a> <em
class="jxr_comment">///// Support methods below.</em>
+<a class="jxr_linenumber" name="L272" href="#L272">272</a>
+<a class="jxr_linenumber" name="L273" href="#L273">273</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L274" href="#L274">274</a> <em
class="jxr_javadoccomment"> * Populates a list with random numbers.</em>
+<a class="jxr_linenumber" name="L275" href="#L275">275</a> <em
class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L276" href="#L276">276</a> <em
class="jxr_javadoccomment"> * @param n Loop counter.</em>
+<a class="jxr_linenumber" name="L277" href="#L277">277</a> <em
class="jxr_javadoccomment"> * @return a list containing {@code 11 * n}
random numbers.</em>
+<a class="jxr_linenumber" name="L278" href="#L278">278</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L279" href="#L279">279</a> <strong
class="jxr_keyword">private</strong> List<Number> makeList(<strong
class="jxr_keyword">int</strong> n) {
+<a class="jxr_linenumber" name="L280" href="#L280">280</a> <strong
class="jxr_keyword">final</strong> List<Number> list = <strong
class="jxr_keyword">new</strong> ArrayList<Number>();
+<a class="jxr_linenumber" name="L281" href="#L281">281</a>
+<a class="jxr_linenumber" name="L282" href="#L282">282</a> <strong
class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i =
0; i < n; i++) {
+<a class="jxr_linenumber" name="L283" href="#L283">283</a> <em
class="jxr_comment">// Append 11 values.</em>
+<a class="jxr_linenumber" name="L284" href="#L284">284</a>
list.add(generator.nextInt());
+<a class="jxr_linenumber" name="L285" href="#L285">285</a>
list.add(generator.nextInt(21));
+<a class="jxr_linenumber" name="L286" href="#L286">286</a>
list.add(generator.nextInt(436));
+<a class="jxr_linenumber" name="L287" href="#L287">287</a>
list.add(generator.nextLong());
+<a class="jxr_linenumber" name="L288" href="#L288">288</a>
list.add(generator.nextLong(157894));
+<a class="jxr_linenumber" name="L289" href="#L289">289</a>
list.add(generator.nextLong(5745833));
+<a class="jxr_linenumber" name="L290" href="#L290">290</a>
list.add(generator.nextFloat());
+<a class="jxr_linenumber" name="L291" href="#L291">291</a>
list.add(generator.nextFloat());
+<a class="jxr_linenumber" name="L292" href="#L292">292</a>
list.add(generator.nextDouble());
+<a class="jxr_linenumber" name="L293" href="#L293">293</a>
list.add(generator.nextDouble());
+<a class="jxr_linenumber" name="L294" href="#L294">294</a>
list.add(generator.nextDouble());
+<a class="jxr_linenumber" name="L295" href="#L295">295</a> }
+<a class="jxr_linenumber" name="L296" href="#L296">296</a>
+<a class="jxr_linenumber" name="L297" href="#L297">297</a> <strong
class="jxr_keyword">return</strong> list;
+<a class="jxr_linenumber" name="L298" href="#L298">298</a> }
+<a class="jxr_linenumber" name="L299" href="#L299">299</a>
+<a class="jxr_linenumber" name="L300" href="#L300">300</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L301" href="#L301">301</a> <em
class="jxr_javadoccomment"> * Checks that the generator values can be
placed into 256 bins with</em>
+<a class="jxr_linenumber" name="L302" href="#L302">302</a> <em
class="jxr_javadoccomment"> * approximately equal number of counts.</em>
+<a class="jxr_linenumber" name="L303" href="#L303">303</a> <em
class="jxr_javadoccomment"> * Test allows to select only part of the buffer
for performing the</em>
+<a class="jxr_linenumber" name="L304" href="#L304">304</a> <em
class="jxr_javadoccomment"> * statistics.</em>
+<a class="jxr_linenumber" name="L305" href="#L305">305</a> <em
class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L306" href="#L306">306</a> <em
class="jxr_javadoccomment"> * @param buffer Buffer to be filled.</em>
+<a class="jxr_linenumber" name="L307" href="#L307">307</a> <em
class="jxr_javadoccomment"> * @param first First element (included) of
{@code buffer} range for</em>
+<a class="jxr_linenumber" name="L308" href="#L308">308</a> <em
class="jxr_javadoccomment"> * which statistics must be taken into
account.</em>
+<a class="jxr_linenumber" name="L309" href="#L309">309</a> <em
class="jxr_javadoccomment"> * @param last Last element (excluded) of {@code
buffer} range for</em>
+<a class="jxr_linenumber" name="L310" href="#L310">310</a> <em
class="jxr_javadoccomment"> * which statistics must be taken into
account.</em>
+<a class="jxr_linenumber" name="L311" href="#L311">311</a> <em
class="jxr_javadoccomment"> * @param nextMethod Method that fills the given
{@code buffer}.</em>
+<a class="jxr_linenumber" name="L312" href="#L312">312</a> <em
class="jxr_javadoccomment"> * @return {@code true} if the distribution is
uniform.</em>
+<a class="jxr_linenumber" name="L313" href="#L313">313</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L314" href="#L314">314</a> <strong
class="jxr_keyword">private</strong> <strong
class="jxr_keyword">boolean</strong> isUniformNextBytes(byte[] buffer,
+<a class="jxr_linenumber" name="L315" href="#L315">315</a>
<strong class="jxr_keyword">int</strong> first,
+<a class="jxr_linenumber" name="L316" href="#L316">316</a>
<strong class="jxr_keyword">int</strong> last,
+<a class="jxr_linenumber" name="L317" href="#L317">317</a>
Runnable nextMethod) {
+<a class="jxr_linenumber" name="L318" href="#L318">318</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong>
sampleSize = 10000;
+<a class="jxr_linenumber" name="L319" href="#L319">319</a>
+<a class="jxr_linenumber" name="L320" href="#L320">320</a> <em
class="jxr_comment">// Number of possible values (do not change).</em>
+<a class="jxr_linenumber" name="L321" href="#L321">321</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong>
byteRange = 256;
+<a class="jxr_linenumber" name="L322" href="#L322">322</a> <em
class="jxr_comment">// Chi-square critical value with 256 degrees of
freedom</em>
+<a class="jxr_linenumber" name="L323" href="#L323">323</a> <em
class="jxr_comment">// and 1% significance level.</em>
+<a class="jxr_linenumber" name="L324" href="#L324">324</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong>
chi2CriticalValue = 311.560343;
+<a class="jxr_linenumber" name="L325" href="#L325">325</a> <em
class="jxr_comment">// To transform a byte value into its bin index.</em>
+<a class="jxr_linenumber" name="L326" href="#L326">326</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong>
byteRangeOffset = 128;
+<a class="jxr_linenumber" name="L327" href="#L327">327</a>
+<a class="jxr_linenumber" name="L328" href="#L328">328</a> <em
class="jxr_comment">// Bins.</em>
+<a class="jxr_linenumber" name="L329" href="#L329">329</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong>[]
observed = <strong class="jxr_keyword">new</strong> <strong
class="jxr_keyword">long</strong>[byteRange];
+<a class="jxr_linenumber" name="L330" href="#L330">330</a> <strong
class="jxr_keyword">final</strong> <strong
class="jxr_keyword">double</strong>[] expected = <strong
class="jxr_keyword">new</strong> <strong
class="jxr_keyword">double</strong>[byteRange];
+<a class="jxr_linenumber" name="L331" href="#L331">331</a>
+<a class="jxr_linenumber" name="L332" href="#L332">332</a> <strong
class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i =
0; i < byteRange; i++) {
+<a class="jxr_linenumber" name="L333" href="#L333">333</a>
expected[i] = sampleSize * (last - first) / (<strong
class="jxr_keyword">double</strong>) byteRange;
+<a class="jxr_linenumber" name="L334" href="#L334">334</a> }
+<a class="jxr_linenumber" name="L335" href="#L335">335</a>
+<a class="jxr_linenumber" name="L336" href="#L336">336</a> <strong
class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="L337" href="#L337">337</a> <strong
class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> k =
0; k < sampleSize; k++) {
+<a class="jxr_linenumber" name="L338" href="#L338">338</a>
nextMethod.run();
+<a class="jxr_linenumber" name="L339" href="#L339">339</a>
+<a class="jxr_linenumber" name="L340" href="#L340">340</a>
<strong class="jxr_keyword">for</strong> (<strong
class="jxr_keyword">int</strong> i = first; i < last; i++) {
+<a class="jxr_linenumber" name="L341" href="#L341">341</a>
<strong class="jxr_keyword">final</strong> byte b = buffer[i];
+<a class="jxr_linenumber" name="L342" href="#L342">342</a>
++observed[b + byteRangeOffset];
+<a class="jxr_linenumber" name="L343" href="#L343">343</a> }
+<a class="jxr_linenumber" name="L344" href="#L344">344</a> }
+<a class="jxr_linenumber" name="L345" href="#L345">345</a> } <strong
class="jxr_keyword">catch</strong> (Exception e) {
+<a class="jxr_linenumber" name="L346" href="#L346">346</a> <em
class="jxr_comment">// Should never happen.</em>
+<a class="jxr_linenumber" name="L347" href="#L347">347</a> <strong
class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong>
RuntimeException(<span class="jxr_string">"Unexpected"</span>);
+<a class="jxr_linenumber" name="L348" href="#L348">348</a> }
+<a class="jxr_linenumber" name="L349" href="#L349">349</a>
+<a class="jxr_linenumber" name="L350" href="#L350">350</a> <em
class="jxr_comment">// Compute chi-square.</em>
+<a class="jxr_linenumber" name="L351" href="#L351">351</a> <strong
class="jxr_keyword">double</strong> chi2 = 0;
+<a class="jxr_linenumber" name="L352" href="#L352">352</a> <strong
class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> k =
0; k < byteRange; k++) {
+<a class="jxr_linenumber" name="L353" href="#L353">353</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong>
diff = observed[k] - expected[k];
+<a class="jxr_linenumber" name="L354" href="#L354">354</a> chi2 +=
diff * diff / expected[k];
+<a class="jxr_linenumber" name="L355" href="#L355">355</a> }
+<a class="jxr_linenumber" name="L356" href="#L356">356</a>
+<a class="jxr_linenumber" name="L357" href="#L357">357</a> <em
class="jxr_comment">// Statistics check.</em>
+<a class="jxr_linenumber" name="L358" href="#L358">358</a> <strong
class="jxr_keyword">return</strong> chi2 < chi2CriticalValue;
+<a class="jxr_linenumber" name="L359" href="#L359">359</a> }
+<a class="jxr_linenumber" name="L360" href="#L360">360</a>
+<a class="jxr_linenumber" name="L361" href="#L361">361</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L362" href="#L362">362</a> <em
class="jxr_javadoccomment"> * Checks that the generator values can be
placed into 2 bins with</em>
+<a class="jxr_linenumber" name="L363" href="#L363">363</a> <em
class="jxr_javadoccomment"> * approximately equal number of counts.</em>
+<a class="jxr_linenumber" name="L364" href="#L364">364</a> <em
class="jxr_javadoccomment"> * The test uses the expectation from a
fixed-step "random walk".</em>
+<a class="jxr_linenumber" name="L365" href="#L365">365</a> <em
class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L366" href="#L366">366</a> <em
class="jxr_javadoccomment"> * @param nextMethod Method that returns {@code
true} if the generated</em>
+<a class="jxr_linenumber" name="L367" href="#L367">367</a> <em
class="jxr_javadoccomment"> * values are to be placed in the first bin,
{@code false} if it must</em>
+<a class="jxr_linenumber" name="L368" href="#L368">368</a> <em
class="jxr_javadoccomment"> * go to the second bin.</em>
+<a class="jxr_linenumber" name="L369" href="#L369">369</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L370" href="#L370">370</a> <strong
class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong>
checkRandomWalk(<strong class="jxr_keyword">int</strong> sampleSize,
+<a class="jxr_linenumber" name="L371" href="#L371">371</a>
Callable<Boolean> nextMethod) {
+<a class="jxr_linenumber" name="L372" href="#L372">372</a> <strong
class="jxr_keyword">int</strong> walk = 0;
+<a class="jxr_linenumber" name="L373" href="#L373">373</a>
+<a class="jxr_linenumber" name="L374" href="#L374">374</a> <strong
class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="L375" href="#L375">375</a> <strong
class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> k =
0; k < sampleSize; ++k) {
+<a class="jxr_linenumber" name="L376" href="#L376">376</a>
<strong class="jxr_keyword">if</strong> (nextMethod.call()) {
+<a class="jxr_linenumber" name="L377" href="#L377">377</a>
++walk;
+<a class="jxr_linenumber" name="L378" href="#L378">378</a> }
<strong class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="L379" href="#L379">379</a>
--walk;
+<a class="jxr_linenumber" name="L380" href="#L380">380</a> }
+<a class="jxr_linenumber" name="L381" href="#L381">381</a> }
+<a class="jxr_linenumber" name="L382" href="#L382">382</a> } <strong
class="jxr_keyword">catch</strong> (Exception e) {
+<a class="jxr_linenumber" name="L383" href="#L383">383</a> <em
class="jxr_comment">// Should never happen.</em>
+<a class="jxr_linenumber" name="L384" href="#L384">384</a> <strong
class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong>
RuntimeException(<span class="jxr_string">"Unexpected"</span>);
+<a class="jxr_linenumber" name="L385" href="#L385">385</a> }
+<a class="jxr_linenumber" name="L386" href="#L386">386</a>
+<a class="jxr_linenumber" name="L387" href="#L387">387</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong>
actual = Math.abs(walk);
+<a class="jxr_linenumber" name="L388" href="#L388">388</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong>
max = Math.sqrt(sampleSize) * 2.576;
+<a class="jxr_linenumber" name="L389" href="#L389">389</a>
Assert.assertTrue(generator + <span class="jxr_string">": Walked too far
astray: "</span> + actual +
+<a class="jxr_linenumber" name="L390" href="#L390">390</a>
<span class="jxr_string">" > "</span> + max +
+<a class="jxr_linenumber" name="L391" href="#L391">391</a>
<span class="jxr_string">" (test will fail randomly about 1 in 100
times)"</span>,
+<a class="jxr_linenumber" name="L392" href="#L392">392</a>
actual < max);
+<a class="jxr_linenumber" name="L393" href="#L393">393</a> }
+<a class="jxr_linenumber" name="L394" href="#L394">394</a>
+<a class="jxr_linenumber" name="L395" href="#L395">395</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L396" href="#L396">396</a> <em
class="jxr_javadoccomment"> * Tests uniformity of the distribution produced
by {@code nextInt(int)}.</em>
+<a class="jxr_linenumber" name="L397" href="#L397">397</a> <em
class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L398" href="#L398">398</a> <em
class="jxr_javadoccomment"> * @param max Upper bound.</em>
+<a class="jxr_linenumber" name="L399" href="#L399">399</a> <em
class="jxr_javadoccomment"> * @param sampleSize Number of random values
generated.</em>
+<a class="jxr_linenumber" name="L400" href="#L400">400</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L401" href="#L401">401</a> <strong
class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong>
checkNextIntegerInRange(<strong class="jxr_keyword">final</strong> <strong
class="jxr_keyword">int</strong> max,
+<a class="jxr_linenumber" name="L402" href="#L402">402</a>
<strong class="jxr_keyword">int</strong> sampleSize) {
+<a class="jxr_linenumber" name="L403" href="#L403">403</a>
checkNextIntegerInRange(generator, max, sampleSize);
+<a class="jxr_linenumber" name="L404" href="#L404">404</a> }
+<a class="jxr_linenumber" name="L405" href="#L405">405</a>
+<a class="jxr_linenumber" name="L406" href="#L406">406</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L407" href="#L407">407</a> <em
class="jxr_javadoccomment"> * Tests uniformity of the distribution produced
by {@code nextInt(int)}.</em>
+<a class="jxr_linenumber" name="L408" href="#L408">408</a> <em
class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L409" href="#L409">409</a> <em
class="jxr_javadoccomment"> * @param rng Generator.</em>
+<a class="jxr_linenumber" name="L410" href="#L410">410</a> <em
class="jxr_javadoccomment"> * @param max Upper bound.</em>
+<a class="jxr_linenumber" name="L411" href="#L411">411</a> <em
class="jxr_javadoccomment"> * @param sampleSize Number of random values
generated.</em>
+<a class="jxr_linenumber" name="L412" href="#L412">412</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L413" href="#L413">413</a> <strong
class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong>
checkNextIntegerInRange(<strong class="jxr_keyword">final</strong>
UniformRandomProvider rng,
+<a class="jxr_linenumber" name="L414" href="#L414">414</a>
<strong class="jxr_keyword">final</strong> <strong
class="jxr_keyword">int</strong> max,
+<a class="jxr_linenumber" name="L415" href="#L415">415</a>
<strong class="jxr_keyword">int</strong> sampleSize) {
+<a class="jxr_linenumber" name="L416" href="#L416">416</a> <strong
class="jxr_keyword">final</strong> Callable<Integer> nextMethod = <strong
class="jxr_keyword">new</strong> Callable<Integer>() {
+<a class="jxr_linenumber" name="L417" href="#L417">417</a>
@Override
+<a class="jxr_linenumber" name="L418" href="#L418">418</a> <strong
class="jxr_keyword">public</strong> Integer call() <strong
class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="L419" href="#L419">419</a>
<strong class="jxr_keyword">return</strong> rng.nextInt(max);
+<a class="jxr_linenumber" name="L420" href="#L420">420</a> }
+<a class="jxr_linenumber" name="L421" href="#L421">421</a> };
+<a class="jxr_linenumber" name="L422" href="#L422">422</a>
+<a class="jxr_linenumber" name="L423" href="#L423">423</a>
checkNextInRange(max, sampleSize, nextMethod);
+<a class="jxr_linenumber" name="L424" href="#L424">424</a> }
+<a class="jxr_linenumber" name="L425" href="#L425">425</a>
+<a class="jxr_linenumber" name="L426" href="#L426">426</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L427" href="#L427">427</a> <em
class="jxr_javadoccomment"> * Tests uniformity of the distribution produced
by {@code nextLong(long)}.</em>
+<a class="jxr_linenumber" name="L428" href="#L428">428</a> <em
class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L429" href="#L429">429</a> <em
class="jxr_javadoccomment"> * @param max Upper bound.</em>
+<a class="jxr_linenumber" name="L430" href="#L430">430</a> <em
class="jxr_javadoccomment"> * @param sampleSize Number of random values
generated.</em>
+<a class="jxr_linenumber" name="L431" href="#L431">431</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L432" href="#L432">432</a> <strong
class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong>
checkNextLongInRange(<strong class="jxr_keyword">final</strong> <strong
class="jxr_keyword">long</strong> max,
+<a class="jxr_linenumber" name="L433" href="#L433">433</a>
<strong class="jxr_keyword">int</strong> sampleSize) {
+<a class="jxr_linenumber" name="L434" href="#L434">434</a> <strong
class="jxr_keyword">final</strong> Callable<Long> nextMethod = <strong
class="jxr_keyword">new</strong> Callable<Long>() {
+<a class="jxr_linenumber" name="L435" href="#L435">435</a>
@Override
+<a class="jxr_linenumber" name="L436" href="#L436">436</a> <strong
class="jxr_keyword">public</strong> Long call() <strong
class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="L437" href="#L437">437</a>
<strong class="jxr_keyword">return</strong> generator.nextLong(max);
+<a class="jxr_linenumber" name="L438" href="#L438">438</a> }
+<a class="jxr_linenumber" name="L439" href="#L439">439</a> };
+<a class="jxr_linenumber" name="L440" href="#L440">440</a>
+<a class="jxr_linenumber" name="L441" href="#L441">441</a>
checkNextInRange(max, sampleSize, nextMethod);
+<a class="jxr_linenumber" name="L442" href="#L442">442</a> }
+<a class="jxr_linenumber" name="L443" href="#L443">443</a>
+<a class="jxr_linenumber" name="L444" href="#L444">444</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L445" href="#L445">445</a> <em
class="jxr_javadoccomment"> * Tests uniformity of the distribution produced
by {@code nextFloat()}.</em>
+<a class="jxr_linenumber" name="L446" href="#L446">446</a> <em
class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L447" href="#L447">447</a> <em
class="jxr_javadoccomment"> * @param sampleSize Number of random values
generated.</em>
+<a class="jxr_linenumber" name="L448" href="#L448">448</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L449" href="#L449">449</a> <strong
class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong>
checkNextFloat(<strong class="jxr_keyword">int</strong> sampleSize) {
+<a class="jxr_linenumber" name="L450" href="#L450">450</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> max
= 1234;
+<a class="jxr_linenumber" name="L451" href="#L451">451</a> <strong
class="jxr_keyword">final</strong> Callable<Integer> nextMethod = <strong
class="jxr_keyword">new</strong> Callable<Integer>() {
+<a class="jxr_linenumber" name="L452" href="#L452">452</a>
@Override
+<a class="jxr_linenumber" name="L453" href="#L453">453</a> <strong
class="jxr_keyword">public</strong> Integer call() <strong
class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="L454" href="#L454">454</a>
<strong class="jxr_keyword">return</strong> (<strong
class="jxr_keyword">int</strong>) (max * generator.nextFloat());
+<a class="jxr_linenumber" name="L455" href="#L455">455</a> }
+<a class="jxr_linenumber" name="L456" href="#L456">456</a> };
+<a class="jxr_linenumber" name="L457" href="#L457">457</a>
+<a class="jxr_linenumber" name="L458" href="#L458">458</a>
checkNextInRange(max, sampleSize, nextMethod);
+<a class="jxr_linenumber" name="L459" href="#L459">459</a> }
+<a class="jxr_linenumber" name="L460" href="#L460">460</a>
+<a class="jxr_linenumber" name="L461" href="#L461">461</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L462" href="#L462">462</a> <em
class="jxr_javadoccomment"> * Tests uniformity of the distribution produced
by {@code nextDouble()}.</em>
+<a class="jxr_linenumber" name="L463" href="#L463">463</a> <em
class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L464" href="#L464">464</a> <em
class="jxr_javadoccomment"> * @param sampleSize Number of random values
generated.</em>
+<a class="jxr_linenumber" name="L465" href="#L465">465</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L466" href="#L466">466</a> <strong
class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong>
checkNextDouble(<strong class="jxr_keyword">int</strong> sampleSize) {
+<a class="jxr_linenumber" name="L467" href="#L467">467</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> max
= 578;
+<a class="jxr_linenumber" name="L468" href="#L468">468</a> <strong
class="jxr_keyword">final</strong> Callable<Integer> nextMethod = <strong
class="jxr_keyword">new</strong> Callable<Integer>() {
+<a class="jxr_linenumber" name="L469" href="#L469">469</a>
@Override
+<a class="jxr_linenumber" name="L470" href="#L470">470</a> <strong
class="jxr_keyword">public</strong> Integer call() <strong
class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="L471" href="#L471">471</a>
<strong class="jxr_keyword">return</strong> (<strong
class="jxr_keyword">int</strong>) (max * generator.nextDouble());
+<a class="jxr_linenumber" name="L472" href="#L472">472</a> }
+<a class="jxr_linenumber" name="L473" href="#L473">473</a> };
+<a class="jxr_linenumber" name="L474" href="#L474">474</a>
+<a class="jxr_linenumber" name="L475" href="#L475">475</a>
checkNextInRange(max, sampleSize, nextMethod);
+<a class="jxr_linenumber" name="L476" href="#L476">476</a> }
+<a class="jxr_linenumber" name="L477" href="#L477">477</a>
+<a class="jxr_linenumber" name="L478" href="#L478">478</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L479" href="#L479">479</a> <em
class="jxr_javadoccomment"> * Tests uniformity of the distribution produced
by the given</em>
+<a class="jxr_linenumber" name="L480" href="#L480">480</a> <em
class="jxr_javadoccomment"> * {@code nextMethod}.</em>
+<a class="jxr_linenumber" name="L481" href="#L481">481</a> <em
class="jxr_javadoccomment"> * It performs a chi-square test of homogeneity
of the observed</em>
+<a class="jxr_linenumber" name="L482" href="#L482">482</a> <em
class="jxr_javadoccomment"> * distribution with the expected uniform
distribution.</em>
+<a class="jxr_linenumber" name="L483" href="#L483">483</a> <em
class="jxr_javadoccomment"> * Tests are performed at the 1% level and an
average failure rate</em>
+<a class="jxr_linenumber" name="L484" href="#L484">484</a> <em
class="jxr_javadoccomment"> * higher than 2% causes the test case to
fail.</em>
+<a class="jxr_linenumber" name="L485" href="#L485">485</a> <em
class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L486" href="#L486">486</a> <em
class="jxr_javadoccomment"> * @param max Upper bound.</em>
+<a class="jxr_linenumber" name="L487" href="#L487">487</a> <em
class="jxr_javadoccomment"> * @param nextMethod method to call.</em>
+<a class="jxr_linenumber" name="L488" href="#L488">488</a> <em
class="jxr_javadoccomment"> * @param sampleSize Number of random values
generated.</em>
+<a class="jxr_linenumber" name="L489" href="#L489">489</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L490" href="#L490">490</a> <strong
class="jxr_keyword">private</strong> <T <strong
class="jxr_keyword">extends</strong> Number> <strong
class="jxr_keyword">void</strong> checkNextInRange(T max,
+<a class="jxr_linenumber" name="L491" href="#L491">491</a>
<strong class="jxr_keyword">int</strong>
sampleSize,
+<a class="jxr_linenumber" name="L492" href="#L492">492</a>
Callable<T> nextMethod) {
+<a class="jxr_linenumber" name="L493" href="#L493">493</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong>
numTests = 500;
+<a class="jxr_linenumber" name="L494" href="#L494">494</a>
+<a class="jxr_linenumber" name="L495" href="#L495">495</a> <em
class="jxr_comment">// Do not change (statistical test assumes that dof =
9).</em>
+<a class="jxr_linenumber" name="L496" href="#L496">496</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong>
numBins = 10; <em class="jxr_comment">// dof = numBins - 1</em>
+<a class="jxr_linenumber" name="L497" href="#L497">497</a>
+<a class="jxr_linenumber" name="L498" href="#L498">498</a> <em
class="jxr_comment">// Set up bins.</em>
+<a class="jxr_linenumber" name="L499" href="#L499">499</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> n
= max.longValue();
+<a class="jxr_linenumber" name="L500" href="#L500">500</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong>[]
binUpperBounds = <strong class="jxr_keyword">new</strong> <strong
class="jxr_keyword">long</strong>[numBins];
+<a class="jxr_linenumber" name="L501" href="#L501">501</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong>
step = n / (<strong class="jxr_keyword">double</strong>) numBins;
+<a class="jxr_linenumber" name="L502" href="#L502">502</a> <strong
class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> k =
0; k < numBins; k++) {
+<a class="jxr_linenumber" name="L503" href="#L503">503</a>
binUpperBounds[k] = (<strong class="jxr_keyword">long</strong>) ((k + 1) *
step);
+<a class="jxr_linenumber" name="L504" href="#L504">504</a> }
+<a class="jxr_linenumber" name="L505" href="#L505">505</a>
+<a class="jxr_linenumber" name="L506" href="#L506">506</a> <em
class="jxr_comment">// Run the tests.</em>
+<a class="jxr_linenumber" name="L507" href="#L507">507</a> <strong
class="jxr_keyword">int</strong> numFailures = 0;
+<a class="jxr_linenumber" name="L508" href="#L508">508</a>
+<a class="jxr_linenumber" name="L509" href="#L509">509</a> <strong
class="jxr_keyword">final</strong> <strong
class="jxr_keyword">double</strong>[] expected = <strong
class="jxr_keyword">new</strong> <strong
class="jxr_keyword">double</strong>[numBins];
+<a class="jxr_linenumber" name="L510" href="#L510">510</a> <strong
class="jxr_keyword">long</strong> previousUpperBound = 0;
+<a class="jxr_linenumber" name="L511" href="#L511">511</a> <strong
class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> k =
0; k < numBins; k++) {
+<a class="jxr_linenumber" name="L512" href="#L512">512</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong>
range = binUpperBounds[k] - previousUpperBound;
+<a class="jxr_linenumber" name="L513" href="#L513">513</a>
expected[k] = sampleSize * (range / (<strong
class="jxr_keyword">double</strong>) n);
+<a class="jxr_linenumber" name="L514" href="#L514">514</a>
previousUpperBound = binUpperBounds[k];
+<a class="jxr_linenumber" name="L515" href="#L515">515</a> }
+<a class="jxr_linenumber" name="L516" href="#L516">516</a>
+<a class="jxr_linenumber" name="L517" href="#L517">517</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong>[]
observed = <strong class="jxr_keyword">new</strong> <strong
class="jxr_keyword">int</strong>[numBins];
+<a class="jxr_linenumber" name="L518" href="#L518">518</a> <em
class="jxr_comment">// Chi-square critical value with 9 degrees of freedom</em>
+<a class="jxr_linenumber" name="L519" href="#L519">519</a> <em
class="jxr_comment">// and 1% significance level.</em>
+<a class="jxr_linenumber" name="L520" href="#L520">520</a> <strong
class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong>
chi2CriticalValue = 21.67;
+<a class="jxr_linenumber" name="L521" href="#L521">521</a>
+<a class="jxr_linenumber" name="L522" href="#L522">522</a> <strong
class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="L523" href="#L523">523</a> <strong
class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i =
0; i < numTests; i++) {
+<a class="jxr_linenumber" name="L524" href="#L524">524</a>
Arrays.fill(observed, 0);
+<a class="jxr_linenumber" name="L525" href="#L525">525</a>
<strong class="jxr_keyword">for</strong> (<strong
class="jxr_keyword">int</strong> j = 0; j < sampleSize; j++) {
+<a class="jxr_linenumber" name="L526" href="#L526">526</a>
<strong class="jxr_keyword">final</strong> <strong
class="jxr_keyword">long</strong> value = nextMethod.call().longValue();
+<a class="jxr_linenumber" name="L527" href="#L527">527</a>
Assert.assertTrue(<span class="jxr_string">"Range"</span>, (value >= 0)
&& (value < n));
+<a class="jxr_linenumber" name="L528" href="#L528">528</a>
+<a class="jxr_linenumber" name="L529" href="#L529">529</a>
<strong class="jxr_keyword">for</strong> (<strong
class="jxr_keyword">int</strong> k = 0; k < numBins; k++) {
+<a class="jxr_linenumber" name="L530" href="#L530">530</a>
<strong class="jxr_keyword">if</strong> (value < binUpperBounds[k]) {
+<a class="jxr_linenumber" name="L531" href="#L531">531</a>
++observed[k];
+<a class="jxr_linenumber" name="L532" href="#L532">532</a>
<strong class="jxr_keyword">break</strong>;
+<a class="jxr_linenumber" name="L533" href="#L533">533</a>
}
+<a class="jxr_linenumber" name="L534" href="#L534">534</a>
}
+<a class="jxr_linenumber" name="L535" href="#L535">535</a> }
+<a class="jxr_linenumber" name="L536" href="#L536">536</a>
+<a class="jxr_linenumber" name="L537" href="#L537">537</a> <em
class="jxr_comment">// Compute chi-square.</em>
+<a class="jxr_linenumber" name="L538" href="#L538">538</a>
<strong class="jxr_keyword">double</strong> chi2 = 0;
+<a class="jxr_linenumber" name="L539" href="#L539">539</a>
<strong class="jxr_keyword">for</strong> (<strong
class="jxr_keyword">int</strong> k = 0; k < numBins; k++) {
+<a class="jxr_linenumber" name="L540" href="#L540">540</a>
<strong class="jxr_keyword">final</strong> <strong
class="jxr_keyword">double</strong> diff = observed[k] - expected[k];
+<a class="jxr_linenumber" name="L541" href="#L541">541</a>
chi2 += diff * diff / expected[k];
+<a class="jxr_linenumber" name="L542" href="#L542">542</a> }
+<a class="jxr_linenumber" name="L543" href="#L543">543</a>
+<a class="jxr_linenumber" name="L544" href="#L544">544</a> <em
class="jxr_comment">// Statistics check.</em>
+<a class="jxr_linenumber" name="L545" href="#L545">545</a>
<strong class="jxr_keyword">if</strong> (chi2 > chi2CriticalValue) {
+<a class="jxr_linenumber" name="L546" href="#L546">546</a>
++numFailures;
+<a class="jxr_linenumber" name="L547" href="#L547">547</a> }
+<a class="jxr_linenumber" name="L548" href="#L548">548</a> }
+<a class="jxr_linenumber" name="L549" href="#L549">549</a> } <strong
class="jxr_keyword">catch</strong> (Exception e) {
+<a class="jxr_linenumber" name="L550" href="#L550">550</a> <em
class="jxr_comment">// Should never happen.</em>
+<a class="jxr_linenumber" name="L551" href="#L551">551</a> <strong
class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong>
RuntimeException(<span class="jxr_string">"Unexpected"</span>, e);
+<a class="jxr_linenumber" name="L552" href="#L552">552</a> }
+<a class="jxr_linenumber" name="L553" href="#L553">553</a>
+<a class="jxr_linenumber" name="L554" href="#L554">554</a> <strong
class="jxr_keyword">if</strong> ((<strong class="jxr_keyword">double</strong>)
numFailures / (<strong class="jxr_keyword">double</strong>) numTests > 0.02)
{
+<a class="jxr_linenumber" name="L555" href="#L555">555</a>
Assert.fail(generator + <span class="jxr_string">": Too many failures for n =
"</span> + n +
+<a class="jxr_linenumber" name="L556" href="#L556">556</a>
<span class="jxr_string">" ("</span> + numFailures + <span
class="jxr_string">" out of "</span> + numTests + <span class="jxr_string">"
tests failed)"</span>);
+<a class="jxr_linenumber" name="L557" href="#L557">557</a> }
+<a class="jxr_linenumber" name="L558" href="#L558">558</a> }
+<a class="jxr_linenumber" name="L559" href="#L559">559</a>
+<a class="jxr_linenumber" name="L560" href="#L560">560</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L561" href="#L561">561</a> <em
class="jxr_javadoccomment"> * @param rng Generator.</em>
+<a class="jxr_linenumber" name="L562" href="#L562">562</a> <em
class="jxr_javadoccomment"> * @param chunkSize Size of the small
buffer.</em>
+<a class="jxr_linenumber" name="L563" href="#L563">563</a> <em
class="jxr_javadoccomment"> * @param numChunks Number of chunks that make
the large buffer.</em>
+<a class="jxr_linenumber" name="L564" href="#L564">564</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L565" href="#L565">565</a> <strong
class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong>
checkNextBytesChunks(RestorableUniformRandomProvider rng,
+<a class="jxr_linenumber" name="L566" href="#L566">566</a>
<strong class="jxr_keyword">int</strong> chunkSize,
+<a class="jxr_linenumber" name="L567" href="#L567">567</a>
<strong class="jxr_keyword">int</strong> numChunks) {
+<a class="jxr_linenumber" name="L568" href="#L568">568</a> <strong
class="jxr_keyword">final</strong> byte[] b1 = <strong
class="jxr_keyword">new</strong> byte[chunkSize * numChunks];
+<a class="jxr_linenumber" name="L569" href="#L569">569</a> <strong
class="jxr_keyword">final</strong> byte[] b2 = <strong
class="jxr_keyword">new</strong> byte[chunkSize];
+<a class="jxr_linenumber" name="L570" href="#L570">570</a>
+<a class="jxr_linenumber" name="L571" href="#L571">571</a> <strong
class="jxr_keyword">final</strong> RandomProviderState state = rng.saveState();
+<a class="jxr_linenumber" name="L572" href="#L572">572</a>
+<a class="jxr_linenumber" name="L573" href="#L573">573</a> <em
class="jxr_comment">// Generate the chunks in a single call.</em>
+<a class="jxr_linenumber" name="L574" href="#L574">574</a>
rng.nextBytes(b1);
+<a class="jxr_linenumber" name="L575" href="#L575">575</a>
+<a class="jxr_linenumber" name="L576" href="#L576">576</a> <em
class="jxr_comment">// Reset to previous state.</em>
+<a class="jxr_linenumber" name="L577" href="#L577">577</a>
rng.restoreState(state);
+<a class="jxr_linenumber" name="L578" href="#L578">578</a>
+<a class="jxr_linenumber" name="L579" href="#L579">579</a> <em
class="jxr_comment">// Generate the chunks in consecutive calls.</em>
+<a class="jxr_linenumber" name="L580" href="#L580">580</a> <strong
class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i =
0; i < numChunks; i++) {
+<a class="jxr_linenumber" name="L581" href="#L581">581</a>
rng.nextBytes(b2);
+<a class="jxr_linenumber" name="L582" href="#L582">582</a> }
+<a class="jxr_linenumber" name="L583" href="#L583">583</a>
+<a class="jxr_linenumber" name="L584" href="#L584">584</a> <em
class="jxr_comment">// Store last "chunkSize" bytes of b1 into b3.</em>
+<a class="jxr_linenumber" name="L585" href="#L585">585</a> <strong
class="jxr_keyword">final</strong> byte[] b3 = <strong
class="jxr_keyword">new</strong> byte[chunkSize];
+<a class="jxr_linenumber" name="L586" href="#L586">586</a>
System.arraycopy(b1, b1.length - b3.length, b3, 0, b3.length);
+<a class="jxr_linenumber" name="L587" href="#L587">587</a>
+<a class="jxr_linenumber" name="L588" href="#L588">588</a> <em
class="jxr_comment">// Sequence of calls must be the same.</em>
+<a class="jxr_linenumber" name="L589" href="#L589">589</a>
Assert.assertArrayEquals(<span class="jxr_string">"chunkSize="</span> +
chunkSize + <span class="jxr_string">" numChunks="</span> + numChunks,
+<a class="jxr_linenumber" name="L590" href="#L590">590</a>
b2, b3);
+<a class="jxr_linenumber" name="L591" href="#L591">591</a> }
+<a class="jxr_linenumber" name="L592" href="#L592">592</a>
+<a class="jxr_linenumber" name="L593" href="#L593">593</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L594" href="#L594">594</a> <em
class="jxr_javadoccomment"> * Dummy class for checking that restoring fails
when an invalid state is used.</em>
+<a class="jxr_linenumber" name="L595" href="#L595">595</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L596" href="#L596">596</a> <strong
class="jxr_keyword">class</strong> <a
href="../../../../../org/apache/commons/rng/core/ProvidersCommonParametricTest.html">DummyGenerator</a>
<strong class="jxr_keyword">extends</strong>
org.apache.commons.rng.core.source32.IntProvider {
+<a class="jxr_linenumber" name="L597" href="#L597">597</a> <em
class="jxr_javadoccomment">/** {@inheritDoc} */</em>
+<a class="jxr_linenumber" name="L598" href="#L598">598</a> @Override
+<a class="jxr_linenumber" name="L599" href="#L599">599</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong>
next() {
+<a class="jxr_linenumber" name="L600" href="#L600">600</a> <strong
class="jxr_keyword">return</strong> 4; <em class="jxr_comment">//
https://www.xkcd.com/221/</em>
+<a class="jxr_linenumber" name="L601" href="#L601">601</a> }
+<a class="jxr_linenumber" name="L602" href="#L602">602</a>
+<a class="jxr_linenumber" name="L603" href="#L603">603</a> <em
class="jxr_javadoccomment">/** {@inheritDoc} */</em>
+<a class="jxr_linenumber" name="L604" href="#L604">604</a> @Override
+<a class="jxr_linenumber" name="L605" href="#L605">605</a> <strong
class="jxr_keyword">protected</strong> byte[] getStateInternal() {
+<a class="jxr_linenumber" name="L606" href="#L606">606</a> <strong
class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong>
byte[0];
+<a class="jxr_linenumber" name="L607" href="#L607">607</a> }
+<a class="jxr_linenumber" name="L608" href="#L608">608</a>
+<a class="jxr_linenumber" name="L609" href="#L609">609</a> <em
class="jxr_javadoccomment">/** {@inheritDoc} */</em>
+<a class="jxr_linenumber" name="L610" href="#L610">610</a> @Override
+<a class="jxr_linenumber" name="L611" href="#L611">611</a> <strong
class="jxr_keyword">protected</strong> <strong
class="jxr_keyword">void</strong> setStateInternal(byte[] s) {
+<a class="jxr_linenumber" name="L612" href="#L612">612</a> <em
class="jxr_comment">// No state.</em>
+<a class="jxr_linenumber" name="L613" href="#L613">613</a> }
+<a class="jxr_linenumber" name="L614" href="#L614">614</a> }
+<a class="jxr_linenumber" name="L615" href="#L615">615</a> }
+</pre>
+<hr/>
+<div id="footer">Copyright © 2016 <a href="https://www.apache.org/";>The
Apache Software Foundation</a>. All rights reserved.</div>
+</body>
+</html>
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