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<title>src/Test/Hspec/Core/QuickCheckUtil.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE CPP #-}</span>
<a name="line-2"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Test</span><span class='hs-varop'>.</span><span class='hs-conid'>Hspec</span><span class='hs-varop'>.</span><span class='hs-conid'>Core</span><span class='hs-varop'>.</span><span class='hs-conid'>QuickCheckUtil</span> <span class='hs-keyword'>where</span>
<a name="line-3"></a>
<a name="line-4"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Prelude</span> <span class='hs-conid'>()</span>
<a name="line-5"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Test</span><span class='hs-varop'>.</span><span class='hs-conid'>Hspec</span><span class='hs-varop'>.</span><span class='hs-conid'>Compat</span>
<a name="line-6"></a>
<a name="line-7"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Int</span>
<a name="line-8"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Test</span><span class='hs-varop'>.</span><span class='hs-conid'>QuickCheck</span> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span><span class='hs-conid'>Result</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-9"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Test</span><span class='hs-varop'>.</span><span class='hs-conid'>QuickCheck</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>QC</span>
<a name="line-10"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Test</span><span class='hs-varop'>.</span><span class='hs-conid'>QuickCheck</span><span class='hs-varop'>.</span><span class='hs-conid'>Property</span> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span><span class='hs-conid'>Result</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-11"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Test</span><span class='hs-varop'>.</span><span class='hs-conid'>QuickCheck</span><span class='hs-varop'>.</span><span class='hs-conid'>Gen</span>
<a name="line-12"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Test</span><span class='hs-varop'>.</span><span class='hs-conid'>QuickCheck</span><span class='hs-varop'>.</span><span class='hs-conid'>Property</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>QCP</span>
<a name="line-13"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Test</span><span class='hs-varop'>.</span><span class='hs-conid'>QuickCheck</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-14"></a>
<a name="line-15"></a>
<a name="line-16"></a><span class='hs-cpp'>#if MIN_VERSION_QuickCheck(2,7,0)</span>
<a name="line-17"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Test</span><span class='hs-varop'>.</span><span class='hs-conid'>QuickCheck</span><span class='hs-varop'>.</span><span class='hs-conid'>Random</span>
<a name="line-18"></a><span class='hs-cpp'>#endif</span>
<a name="line-19"></a>
<a name="line-20"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Random</span>
<a name="line-21"></a>
<a name="line-22"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Test</span><span class='hs-varop'>.</span><span class='hs-conid'>Hspec</span><span class='hs-varop'>.</span><span class='hs-conid'>Core</span><span class='hs-varop'>.</span><span class='hs-conid'>Util</span>
<a name="line-23"></a>
<a name="line-24"></a><a name="aroundProperty"></a><span class='hs-definition'>aroundProperty</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Property</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Property</span>
<a name="line-25"></a><span class='hs-cpp'>#if MIN_VERSION_QuickCheck(2,7,0)</span>
<a name="line-26"></a><span class='hs-definition'>aroundProperty</span> <span class='hs-varid'>action</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>MkProperty</span> <span class='hs-varop'>.</span> <span class='hs-conid'>MkGen</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>r</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>aroundProp</span> <span class='hs-varid'>action</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>unGen</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unProperty</span> <span class='hs-varop'>$</span> <span class='hs-varid'>p</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-varid'>r</span> <span class='hs-varid'>n</span>
<a name="line-27"></a><span class='hs-cpp'>#else</span>
<a name="line-28"></a><span class='hs-definition'>aroundProperty</span> <span class='hs-varid'>action</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>MkGen</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>r</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>aroundProp</span> <span class='hs-varid'>action</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>unGen</span> <span class='hs-varop'>$</span> <span class='hs-varid'>p</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-varid'>r</span> <span class='hs-varid'>n</span>
<a name="line-29"></a><span class='hs-cpp'>#endif</span>
<a name="line-30"></a>
<a name="line-31"></a><a name="aroundProp"></a><span class='hs-definition'>aroundProp</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Prop</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Prop</span>
<a name="line-32"></a><span class='hs-definition'>aroundProp</span> <span class='hs-varid'>action</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>MkProp</span> <span class='hs-varop'>$</span> <span class='hs-varid'>aroundRose</span> <span class='hs-varid'>action</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unProp</span> <span class='hs-varop'>$</span> <span class='hs-varid'>p</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-33"></a>
<a name="line-34"></a><a name="aroundRose"></a><span class='hs-definition'>aroundRose</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rose</span> <span class='hs-conid'>QCP</span><span class='hs-varop'>.</span><span class='hs-conid'>Result</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rose</span> <span class='hs-conid'>QCP</span><span class='hs-varop'>.</span><span class='hs-conid'>Result</span>
<a name="line-35"></a><span class='hs-definition'>aroundRose</span> <span class='hs-varid'>action</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ioRose</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-36"></a> <span class='hs-varid'>ref</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newIORef</span> <span class='hs-layout'>(</span><span class='hs-varid'>return</span> <span class='hs-conid'>QCP</span><span class='hs-varop'>.</span><span class='hs-varid'>succeeded</span><span class='hs-layout'>)</span>
<a name="line-37"></a> <span class='hs-varid'>action</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>reduceRose</span> <span class='hs-layout'>(</span><span class='hs-varid'>r</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>writeIORef</span> <span class='hs-varid'>ref</span>
<a name="line-38"></a> <span class='hs-varid'>readIORef</span> <span class='hs-varid'>ref</span>
<a name="line-39"></a>
<a name="line-40"></a><a name="formatNumbers"></a><span class='hs-definition'>formatNumbers</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Result</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-41"></a><span class='hs-definition'>formatNumbers</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"(after "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>pluralize</span> <span class='hs-layout'>(</span><span class='hs-varid'>numTests</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-str'>"test"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>shrinks</span> <span class='hs-varop'>++</span> <span class='hs-str'>")"</span>
<a name="line-42"></a> <span class='hs-keyword'>where</span>
<a name="line-43"></a> <span class='hs-varid'>shrinks</span>
<a name="line-44"></a> <span class='hs-keyglyph'>|</span> <span class='hs-num'>0</span> <span class='hs-varop'><</span> <span class='hs-varid'>numShrinks</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>" and "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>pluralize</span> <span class='hs-layout'>(</span><span class='hs-varid'>numShrinks</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-str'>"shrink"</span>
<a name="line-45"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>""</span>
<a name="line-46"></a>
<a name="line-47"></a><a name="newSeed"></a><span class='hs-definition'>newSeed</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Int</span>
<a name="line-48"></a><span class='hs-definition'>newSeed</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fst</span> <span class='hs-varop'>.</span> <span class='hs-varid'>randomR</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>maxBound</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int32</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'><$></span>
<a name="line-49"></a><span class='hs-cpp'>#if MIN_VERSION_QuickCheck(2,7,0)</span>
<a name="line-50"></a> <span class='hs-varid'>newQCGen</span>
<a name="line-51"></a><span class='hs-cpp'>#else</span>
<a name="line-52"></a> <span class='hs-varid'>newStdGen</span>
<a name="line-53"></a><span class='hs-cpp'>#endif</span>
<a name="line-54"></a>
<a name="line-55"></a><span class='hs-cpp'>#if MIN_VERSION_QuickCheck(2,7,0)</span>
<a name="line-56"></a><a name="mkGen"></a><span class='hs-definition'>mkGen</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>QCGen</span>
<a name="line-57"></a><span class='hs-definition'>mkGen</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mkQCGen</span>
<a name="line-58"></a><span class='hs-cpp'>#else</span>
<a name="line-59"></a><span class='hs-definition'>mkGen</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>StdGen</span>
<a name="line-60"></a><span class='hs-definition'>mkGen</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mkStdGen</span>
<a name="line-61"></a><span class='hs-cpp'>#endif</span>
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