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<title>src/Test/Hspec/FailureReport.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'>FailureReport</span> <span class='hs-layout'>(</span>
<a name="line-3"></a> <span class='hs-conid'>FailureReport</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-4"></a><span class='hs-layout'>,</span> <span class='hs-varid'>writeFailureReport</span>
<a name="line-5"></a><span class='hs-layout'>,</span> <span class='hs-varid'>readFailureReport</span>
<a name="line-6"></a><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-7"></a>
<a name="line-8"></a><span class='hs-cpp'>#ifndef __GHCJS__</span>
<a name="line-9"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>SetEnv</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'>Hspec</span><span class='hs-varop'>.</span><span class='hs-conid'>Core</span><span class='hs-varop'>.</span><span class='hs-conid'>Util</span> <span class='hs-layout'>(</span><span class='hs-varid'>safeTry</span><span class='hs-layout'>)</span>
<a name="line-11"></a><span class='hs-cpp'>#endif</span>
<a name="line-12"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</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'>Hspec</span><span class='hs-varop'>.</span><span class='hs-conid'>Compat</span>
<a name="line-14"></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> <span class='hs-layout'>(</span><span class='hs-conid'>Path</span><span class='hs-layout'>)</span>
<a name="line-15"></a>
<a name="line-16"></a><a name="FailureReport"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>FailureReport</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>FailureReport</span> <span class='hs-layout'>{</span>
<a name="line-17"></a> <span class='hs-varid'>failureReportSeed</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Integer</span>
<a name="line-18"></a><span class='hs-layout'>,</span> <span class='hs-varid'>failureReportMaxSuccess</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span>
<a name="line-19"></a><span class='hs-layout'>,</span> <span class='hs-varid'>failureReportMaxSize</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span>
<a name="line-20"></a><span class='hs-layout'>,</span> <span class='hs-varid'>failureReportMaxDiscardRatio</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span>
<a name="line-21"></a><span class='hs-layout'>,</span> <span class='hs-varid'>failureReportPaths</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Path</span><span class='hs-keyglyph'>]</span>
<a name="line-22"></a><span class='hs-layout'>}</span> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span><span class='hs-layout'>,</span> <span class='hs-conid'>Read</span><span class='hs-layout'>)</span>
<a name="line-23"></a>
<a name="line-24"></a><a name="writeFailureReport"></a><span class='hs-definition'>writeFailureReport</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FailureReport</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-25"></a><span class='hs-cpp'>#ifdef __GHCJS__</span>
<a name="line-26"></a><span class='hs-definition'>writeFailureReport</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-27"></a> <span class='hs-comment'>-- ghcjs currently does not support setting environment variables</span>
<a name="line-28"></a> <span class='hs-comment'>-- (https://github.com/ghcjs/ghcjs/issues/263). Since writing a failure report</span>
<a name="line-29"></a> <span class='hs-comment'>-- into the environment is a non-essential feature we just disable this to be</span>
<a name="line-30"></a> <span class='hs-comment'>-- able to run hspec test-suites with ghcjs at all. Should be reverted once</span>
<a name="line-31"></a> <span class='hs-comment'>-- the issue is fixed.</span>
<a name="line-32"></a><span class='hs-cpp'>#else</span>
<a name="line-33"></a><span class='hs-definition'>writeFailureReport</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-34"></a> <span class='hs-comment'>-- on Windows this can throw an exception when the input is too large, hence</span>
<a name="line-35"></a> <span class='hs-comment'>-- we use `safeTry` here</span>
<a name="line-36"></a> <span class='hs-varid'>safeTry</span> <span class='hs-layout'>(</span><span class='hs-varid'>setEnv</span> <span class='hs-str'>"HSPEC_FAILURES"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>show</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>either</span> <span class='hs-varid'>onError</span> <span class='hs-varid'>return</span>
<a name="line-37"></a> <span class='hs-keyword'>where</span>
<a name="line-38"></a> <span class='hs-varid'>onError</span> <span class='hs-varid'>err</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-39"></a> <span class='hs-varid'>hPutStrLn</span> <span class='hs-varid'>stderr</span> <span class='hs-layout'>(</span><span class='hs-str'>"WARNING: Could not write environment variable HSPEC_FAILURES ("</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>err</span> <span class='hs-varop'>++</span> <span class='hs-str'>")"</span><span class='hs-layout'>)</span>
<a name="line-40"></a><span class='hs-cpp'>#endif</span>
<a name="line-41"></a>
<a name="line-42"></a><a name="readFailureReport"></a><span class='hs-definition'>readFailureReport</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>FailureReport</span><span class='hs-layout'>)</span>
<a name="line-43"></a><span class='hs-definition'>readFailureReport</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-44"></a> <span class='hs-varid'>mx</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>lookupEnv</span> <span class='hs-str'>"HSPEC_FAILURES"</span>
<a name="line-45"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>mx</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>readMaybe</span> <span class='hs-keyword'>of</span>
<a name="line-46"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-47"></a> <span class='hs-varid'>hPutStrLn</span> <span class='hs-varid'>stderr</span> <span class='hs-str'>"WARNING: Could not read environment variable HSPEC_FAILURES; `--rerun' is ignored!"</span>
<a name="line-48"></a> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span>
<a name="line-49"></a> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>x</span>
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