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<!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 `/home/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/quickcheck-1.0.3/src/lib.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>lib.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" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled><link rel="stylesheet" type="text/css" href="../../dark.css" disabled><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script src="../../crates.js"></script><script defer src="../../main.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script>
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</pre><pre class="rust"><code><span class="doccomment">/*!
This crate is a port of
[Haskell's QuickCheck](https://hackage.haskell.org/package/QuickCheck).
For detailed examples, please see the
[README](https://github.com/BurntSushi/quickcheck).
# Compatibility
In general, this crate considers the `Arbitrary` implementations provided as
implementation details. Strategies may or may not change over time, which may
cause new test failures, presumably due to the discovery of new bugs due to a
new kind of witness being generated. These sorts of changes may happen in
semver compatible releases.
*/</span>
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::arbitrary</span>::{<span class="ident">empty_shrinker</span>, <span class="ident">single_shrinker</span>, <span class="ident">Arbitrary</span>, <span class="ident">Gen</span>};
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::tester</span>::{<span class="ident">quickcheck</span>, <span class="ident">QuickCheck</span>, <span class="ident">TestResult</span>, <span class="ident">Testable</span>};
<span class="doccomment">/// A macro for writing quickcheck tests.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This macro takes as input one or more property functions to test, and</span>
<span class="doccomment">/// produces a proper `#[test]` function for each property. If the property</span>
<span class="doccomment">/// fails, the behavior is as if `quickcheck` were called on the property</span>
<span class="doccomment">/// (i.e., it panics and fails the test).</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Note that this macro doesn't support `mut` or patterns in parameters.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Example</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```rust</span>
<span class="doccomment">/// # #[macro_use] extern crate quickcheck; fn main() {</span>
<span class="doccomment">/// quickcheck! {</span>
<span class="doccomment">/// fn prop_reverse_reverse(xs: Vec<usize>) -> bool {</span>
<span class="doccomment">/// let rev: Vec<_> = xs.clone().into_iter().rev().collect();</span>
<span class="doccomment">/// let revrev: Vec<_> = rev.into_iter().rev().collect();</span>
<span class="doccomment">/// xs == revrev</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// };</span>
<span class="doccomment">/// # }</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">macro_export</span>]</span>
<span class="macro">macro_rules!</span> <span class="ident">quickcheck</span> {
(@<span class="ident">as_items</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">i</span>:<span class="ident">item</span>)<span class="kw-2">*</span>) => ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">i</span>)<span class="kw-2">*</span>);
{
$(
$(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">m</span>:<span class="ident">meta</span>]</span>)<span class="op">*</span>
<span class="kw">fn</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">fn_name</span>:<span class="ident">ident</span>($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg_name</span>:<span class="ident">ident</span> : <span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg_ty</span>:<span class="ident">ty</span>),<span class="kw-2">*</span>) -> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ret</span>:<span class="ident">ty</span> {
$(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">code</span>:<span class="ident">tt</span>)<span class="op">*</span>
}
)<span class="op">*</span>
} => (
<span class="macro-nonterminal">$</span><span class="macro">crate::quickcheck!</span> {
@<span class="macro-nonterminal">as_items</span>
$(
<span class="attribute">#[<span class="ident">test</span>]</span>
$(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">m</span>]</span>)<span class="op">*</span>
<span class="kw">fn</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">fn_name</span>() {
<span class="kw">fn</span> <span class="ident">prop</span>($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg_name</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg_ty</span>),<span class="kw-2">*</span>) -> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ret</span> {
$(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">code</span>)<span class="op">*</span>
}
<span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::quickcheck</span>(<span class="ident">prop</span> <span class="kw">as</span> <span class="kw">fn</span>($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg_ty</span>),<span class="kw-2">*</span>) -> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ret</span>);
}
)<span class="op">*</span>
}
)
}
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"use_logging"</span>)]</span>
<span class="kw">fn</span> <span class="ident">env_logger_init</span>() -> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">log::SetLoggerError</span><span class="op">></span> {
<span class="ident">env_logger::try_init</span>()
}
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"use_logging"</span>)]</span>
<span class="macro">macro_rules!</span> <span class="ident">info</span> {
($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) => {
<span class="macro">log::info!</span>($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>)<span class="kw-2">*</span>)
};
}
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"use_logging"</span>))]</span>
<span class="kw">fn</span> <span class="ident">env_logger_init</span>() {}
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"use_logging"</span>))]</span>
<span class="macro">macro_rules!</span> <span class="ident">info</span> {
($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">_ignore</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) => {
()
};
}
<span class="kw">mod</span> <span class="ident">arbitrary</span>;
<span class="kw">mod</span> <span class="ident">tester</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span>
<span class="kw">mod</span> <span class="ident">tests</span>;
</code></pre></div>
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