| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `common/rusty_leveldb_sgx/src/test_util.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>test_util.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../rusty_leveldb/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../rusty_leveldb/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
| <span id="2">2</span> |
| <span id="3">3</span> |
| <span id="4">4</span> |
| <span id="5">5</span> |
| <span id="6">6</span> |
| <span id="7">7</span> |
| <span id="8">8</span> |
| <span id="9">9</span> |
| <span id="10">10</span> |
| <span id="11">11</span> |
| <span id="12">12</span> |
| <span id="13">13</span> |
| <span id="14">14</span> |
| <span id="15">15</span> |
| <span id="16">16</span> |
| <span id="17">17</span> |
| <span id="18">18</span> |
| <span id="19">19</span> |
| <span id="20">20</span> |
| <span id="21">21</span> |
| <span id="22">22</span> |
| <span id="23">23</span> |
| <span id="24">24</span> |
| <span id="25">25</span> |
| <span id="26">26</span> |
| <span id="27">27</span> |
| <span id="28">28</span> |
| <span id="29">29</span> |
| <span id="30">30</span> |
| <span id="31">31</span> |
| <span id="32">32</span> |
| <span id="33">33</span> |
| <span id="34">34</span> |
| <span id="35">35</span> |
| <span id="36">36</span> |
| <span id="37">37</span> |
| <span id="38">38</span> |
| <span id="39">39</span> |
| <span id="40">40</span> |
| <span id="41">41</span> |
| <span id="42">42</span> |
| <span id="43">43</span> |
| <span id="44">44</span> |
| <span id="45">45</span> |
| <span id="46">46</span> |
| <span id="47">47</span> |
| <span id="48">48</span> |
| <span id="49">49</span> |
| <span id="50">50</span> |
| <span id="51">51</span> |
| <span id="52">52</span> |
| <span id="53">53</span> |
| <span id="54">54</span> |
| <span id="55">55</span> |
| <span id="56">56</span> |
| <span id="57">57</span> |
| <span id="58">58</span> |
| <span id="59">59</span> |
| <span id="60">60</span> |
| <span id="61">61</span> |
| <span id="62">62</span> |
| <span id="63">63</span> |
| <span id="64">64</span> |
| <span id="65">65</span> |
| <span id="66">66</span> |
| <span id="67">67</span> |
| <span id="68">68</span> |
| <span id="69">69</span> |
| <span id="70">70</span> |
| <span id="71">71</span> |
| <span id="72">72</span> |
| <span id="73">73</span> |
| <span id="74">74</span> |
| <span id="75">75</span> |
| <span id="76">76</span> |
| <span id="77">77</span> |
| <span id="78">78</span> |
| <span id="79">79</span> |
| <span id="80">80</span> |
| <span id="81">81</span> |
| <span id="82">82</span> |
| <span id="83">83</span> |
| <span id="84">84</span> |
| <span id="85">85</span> |
| <span id="86">86</span> |
| <span id="87">87</span> |
| <span id="88">88</span> |
| <span id="89">89</span> |
| <span id="90">90</span> |
| <span id="91">91</span> |
| <span id="92">92</span> |
| <span id="93">93</span> |
| <span id="94">94</span> |
| <span id="95">95</span> |
| <span id="96">96</span> |
| <span id="97">97</span> |
| <span id="98">98</span> |
| <span id="99">99</span> |
| <span id="100">100</span> |
| <span id="101">101</span> |
| <span id="102">102</span> |
| <span id="103">103</span> |
| <span id="104">104</span> |
| <span id="105">105</span> |
| <span id="106">106</span> |
| <span id="107">107</span> |
| <span id="108">108</span> |
| <span id="109">109</span> |
| <span id="110">110</span> |
| <span id="111">111</span> |
| <span id="112">112</span> |
| <span id="113">113</span> |
| <span id="114">114</span> |
| <span id="115">115</span> |
| <span id="116">116</span> |
| <span id="117">117</span> |
| <span id="118">118</span> |
| <span id="119">119</span> |
| <span id="120">120</span> |
| <span id="121">121</span> |
| <span id="122">122</span> |
| <span id="123">123</span> |
| <span id="124">124</span> |
| <span id="125">125</span> |
| <span id="126">126</span> |
| <span id="127">127</span> |
| <span id="128">128</span> |
| <span id="129">129</span> |
| <span id="130">130</span> |
| <span id="131">131</span> |
| <span id="132">132</span> |
| <span id="133">133</span> |
| <span id="134">134</span> |
| <span id="135">135</span> |
| <span id="136">136</span> |
| <span id="137">137</span> |
| <span id="138">138</span> |
| <span id="139">139</span> |
| <span id="140">140</span> |
| <span id="141">141</span> |
| <span id="142">142</span> |
| <span id="143">143</span> |
| <span id="144">144</span> |
| <span id="145">145</span> |
| <span id="146">146</span> |
| <span id="147">147</span> |
| <span id="148">148</span> |
| <span id="149">149</span> |
| <span id="150">150</span> |
| <span id="151">151</span> |
| <span id="152">152</span> |
| <span id="153">153</span> |
| <span id="154">154</span> |
| <span id="155">155</span> |
| <span id="156">156</span> |
| <span id="157">157</span> |
| <span id="158">158</span> |
| <span id="159">159</span> |
| <span id="160">160</span> |
| <span id="161">161</span> |
| <span id="162">162</span> |
| <span id="163">163</span> |
| <span id="164">164</span> |
| <span id="165">165</span> |
| <span id="166">166</span> |
| </pre><pre class="rust"><code><span class="kw">use </span><span class="kw">crate</span>::cmp::{Cmp, DefaultCmp}; |
| <span class="kw">use </span><span class="kw">crate</span>::types::{current_key_val, LdbIterator}; |
| |
| <span class="kw">use </span>std::cmp::Ordering; |
| |
| <span class="doccomment">/// TestLdbIter is an LdbIterator over a vector, to be used for testing purposes. |
| </span><span class="kw">pub struct </span>TestLdbIter<<span class="lifetime">'a</span>> { |
| v: Vec<(<span class="kw-2">&</span><span class="lifetime">'a </span>[u8], <span class="kw-2">&</span><span class="lifetime">'a </span>[u8])>, |
| ix: usize, |
| init: bool, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> TestLdbIter<<span class="lifetime">'a</span>> { |
| <span class="kw">pub fn </span>new(c: Vec<(<span class="kw-2">&</span><span class="lifetime">'a </span>[u8], <span class="kw-2">&</span><span class="lifetime">'a </span>[u8])>) -> TestLdbIter<<span class="lifetime">'a</span>> { |
| <span class="kw">return </span>TestLdbIter { |
| v: c, |
| ix: <span class="number">0</span>, |
| init: <span class="bool-val">false</span>, |
| }; |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> LdbIterator <span class="kw">for </span>TestLdbIter<<span class="lifetime">'a</span>> { |
| <span class="kw">fn </span>advance(<span class="kw-2">&mut </span><span class="self">self</span>) -> bool { |
| <span class="kw">if </span><span class="self">self</span>.ix == <span class="self">self</span>.v.len() - <span class="number">1 </span>{ |
| <span class="self">self</span>.ix += <span class="number">1</span>; |
| <span class="bool-val">false |
| </span>} <span class="kw">else if </span>!<span class="self">self</span>.init { |
| <span class="self">self</span>.init = <span class="bool-val">true</span>; |
| <span class="bool-val">true |
| </span>} <span class="kw">else </span>{ |
| <span class="self">self</span>.ix += <span class="number">1</span>; |
| <span class="bool-val">true |
| </span>} |
| } |
| <span class="kw">fn </span>reset(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="self">self</span>.ix = <span class="number">0</span>; |
| <span class="self">self</span>.init = <span class="bool-val">false</span>; |
| } |
| <span class="kw">fn </span>current(<span class="kw-2">&</span><span class="self">self</span>, key: <span class="kw-2">&mut </span>Vec<u8>, val: <span class="kw-2">&mut </span>Vec<u8>) -> bool { |
| <span class="kw">if </span><span class="self">self</span>.init && <span class="self">self</span>.ix < <span class="self">self</span>.v.len() { |
| key.clear(); |
| val.clear(); |
| key.extend_from_slice(<span class="self">self</span>.v[<span class="self">self</span>.ix].<span class="number">0</span>); |
| val.extend_from_slice(<span class="self">self</span>.v[<span class="self">self</span>.ix].<span class="number">1</span>); |
| <span class="bool-val">true |
| </span>} <span class="kw">else </span>{ |
| <span class="bool-val">false |
| </span>} |
| } |
| <span class="kw">fn </span>valid(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="self">self</span>.init && <span class="self">self</span>.ix < <span class="self">self</span>.v.len() |
| } |
| <span class="kw">fn </span>seek(<span class="kw-2">&mut </span><span class="self">self</span>, k: <span class="kw-2">&</span>[u8]) { |
| <span class="self">self</span>.ix = <span class="number">0</span>; |
| <span class="self">self</span>.init = <span class="bool-val">true</span>; |
| <span class="kw">while </span><span class="self">self</span>.ix < <span class="self">self</span>.v.len() && DefaultCmp.cmp(<span class="self">self</span>.v[<span class="self">self</span>.ix].<span class="number">0</span>, k) == Ordering::Less { |
| <span class="self">self</span>.ix += <span class="number">1</span>; |
| } |
| } |
| <span class="kw">fn </span>prev(<span class="kw-2">&mut </span><span class="self">self</span>) -> bool { |
| <span class="kw">if </span>!<span class="self">self</span>.init || <span class="self">self</span>.ix == <span class="number">0 </span>{ |
| <span class="self">self</span>.init = <span class="bool-val">false</span>; |
| <span class="bool-val">false |
| </span>} <span class="kw">else </span>{ |
| <span class="self">self</span>.ix -= <span class="number">1</span>; |
| <span class="bool-val">true |
| </span>} |
| } |
| } |
| |
| <span class="doccomment">/// LdbIteratorIter implements std::iter::Iterator for an LdbIterator. |
| </span><span class="kw">pub struct </span>LdbIteratorIter<<span class="lifetime">'a</span>, It: <span class="lifetime">'a</span>> { |
| inner: <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>It, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, It: LdbIterator> LdbIteratorIter<<span class="lifetime">'a</span>, It> { |
| <span class="kw">pub fn </span>wrap(it: <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>It) -> LdbIteratorIter<<span class="lifetime">'a</span>, It> { |
| LdbIteratorIter { inner: it } |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, It: LdbIterator> Iterator <span class="kw">for </span>LdbIteratorIter<<span class="lifetime">'a</span>, It> { |
| <span class="kw">type </span>Item = (Vec<u8>, Vec<u8>); |
| <span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>::Item> { |
| LdbIterator::next(<span class="self">self</span>.inner) |
| } |
| } |
| |
| <span class="doccomment">/// This shared test takes an iterator with exactly four elements and tests that it fulfills the |
| /// generic iterator properties. Every iterator defined in this code base should pass this test. |
| </span><span class="kw">pub fn </span>test_iterator_properties<It: LdbIterator>(<span class="kw-2">mut </span>it: It) { |
| <span class="macro">assert!</span>(!it.valid()); |
| <span class="macro">assert!</span>(it.advance()); |
| <span class="macro">assert!</span>(it.valid()); |
| <span class="kw">let </span>first = current_key_val(<span class="kw-2">&</span>it); |
| <span class="macro">assert!</span>(it.advance()); |
| <span class="kw">let </span>second = current_key_val(<span class="kw-2">&</span>it); |
| <span class="macro">assert!</span>(it.advance()); |
| <span class="kw">let </span>third = current_key_val(<span class="kw-2">&</span>it); |
| <span class="comment">// fourth (last) element |
| </span><span class="macro">assert!</span>(it.advance()); |
| <span class="macro">assert!</span>(it.valid()); |
| <span class="kw">let </span>fourth = current_key_val(<span class="kw-2">&</span>it); |
| <span class="comment">// past end is invalid |
| </span><span class="macro">assert!</span>(!it.advance()); |
| <span class="macro">assert!</span>(!it.valid()); |
| |
| it.reset(); |
| it.seek(<span class="kw-2">&</span>fourth.as_ref().unwrap().<span class="number">0</span>); |
| <span class="macro">assert!</span>(it.valid()); |
| it.seek(<span class="kw-2">&</span>second.as_ref().unwrap().<span class="number">0</span>); |
| <span class="macro">assert!</span>(it.valid()); |
| it.prev(); |
| <span class="macro">assert_eq!</span>(first, current_key_val(<span class="kw-2">&</span>it)); |
| |
| it.reset(); |
| <span class="macro">assert!</span>(!it.valid()); |
| <span class="macro">assert!</span>(it.advance()); |
| <span class="macro">assert_eq!</span>(first, current_key_val(<span class="kw-2">&</span>it)); |
| <span class="macro">assert!</span>(it.advance()); |
| <span class="macro">assert_eq!</span>(second, current_key_val(<span class="kw-2">&</span>it)); |
| <span class="macro">assert!</span>(it.advance()); |
| <span class="macro">assert_eq!</span>(third, current_key_val(<span class="kw-2">&</span>it)); |
| <span class="macro">assert!</span>(it.prev()); |
| <span class="macro">assert_eq!</span>(second, current_key_val(<span class="kw-2">&</span>it)); |
| <span class="macro">assert!</span>(it.prev()); |
| <span class="macro">assert_eq!</span>(first, current_key_val(<span class="kw-2">&</span>it)); |
| <span class="macro">assert!</span>(!it.prev()); |
| <span class="macro">assert!</span>(!it.valid()); |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"enclave_unit_test"</span>)] |
| </span><span class="kw">pub mod </span>tests { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| <span class="kw">use </span>teaclave_test_utils::<span class="kw-2">*</span>; |
| |
| <span class="kw">pub fn </span>run_tests() -> bool { |
| <span class="macro">run_tests!</span>(test_test_util_basic, test_test_util_ldbiter_properties,) |
| } |
| |
| <span class="kw">fn </span>test_test_util_basic() { |
| <span class="kw">let </span>v = <span class="macro">vec!</span>[ |
| (<span class="string">"abc"</span>.as_bytes(), <span class="string">"def"</span>.as_bytes()), |
| (<span class="string">"abd"</span>.as_bytes(), <span class="string">"deg"</span>.as_bytes()), |
| ]; |
| <span class="kw">let </span><span class="kw-2">mut </span>iter = TestLdbIter::new(v); |
| <span class="macro">assert_eq!</span>( |
| iter.next(), |
| <span class="prelude-val">Some</span>((Vec::from(<span class="string">"abc"</span>.as_bytes()), Vec::from(<span class="string">"def"</span>.as_bytes()))) |
| ); |
| } |
| |
| <span class="kw">fn </span>test_test_util_ldbiter_properties() { |
| <span class="kw">let </span>v; |
| { |
| v = <span class="macro">vec!</span>[ |
| (<span class="string">"abc"</span>.as_bytes(), <span class="string">"def"</span>.as_bytes()), |
| (<span class="string">"abd"</span>.as_bytes(), <span class="string">"deg"</span>.as_bytes()), |
| (<span class="string">"abe"</span>.as_bytes(), <span class="string">"deg"</span>.as_bytes()), |
| (<span class="string">"abf"</span>.as_bytes(), <span class="string">"deg"</span>.as_bytes()), |
| ]; |
| } |
| test_iterator_properties(TestLdbIter::new(v)); |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="rusty_leveldb" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
