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Transform dotnet test output to jUnit format for CI purposes.
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:a ="http://microsoft.com/schemas/VisualStudio/TeamTest/2006" xmlns:b ="http://microsoft.com/schemas/VisualStudio/TeamTest/2010" >
<xsl:output method="xml" indent="yes" />
<xsl:template match="/">
<testsuites>
<xsl:variable name="buildName" select="//a:TestRun/@name"/>
<xsl:variable name="numberOfTests" select="count(//a:UnitTestResult/@testId) + count(//b:UnitTestResult/@testId)"/>
<xsl:variable name="numberOfFailures" select="count(//a:UnitTestResult/@outcome[.='Failed']) + count(//b:UnitTestResult/@outcome[.='Failed'])" />
<xsl:variable name="numberOfErrors" select="count(//a:UnitTestResult[not(@outcome)]) + count(//b:UnitTestResult[not(@outcome)])" />
<xsl:variable name="numberSkipped" select="count(//a:UnitTestResult/@outcome[.!='Passed' and .!='Failed']) + count(//b:UnitTestResult/@outcome[.!='Passed' and .!='Failed'])" />
<testsuite name="MSTestSuite"
tests="{$numberOfTests}"
time="0"
failures="{$numberOfFailures}"
errors="{$numberOfErrors}"
skipped="{$numberSkipped}">
<xsl:for-each select="//a:UnitTestResult">
<xsl:variable name="testName" select="@testName"/>
<xsl:variable name="executionId" select="@executionId"/>
<xsl:variable name="totalduration">
<xsl:choose>
<xsl:when test="@duration">
<xsl:variable name="duration_seconds" select="substring(@duration, 7)"/>
<xsl:variable name="duration_minutes" select="substring(@duration, 4,2 )"/>
<xsl:variable name="duration_hours" select="substring(@duration, 1, 2)"/>
<xsl:value-of select="$duration_hours*3600 + $duration_minutes*60 + $duration_seconds"/>
</xsl:when>
<xsl:otherwise>
<xsl:variable name="d_seconds" select="substring(@endTime, 18,10) - substring(@startTime, 18,10)"/>
<xsl:variable name="d_minutes" select="substring(@endTime, 15,2) - substring(@startTime, 15,2 )"/>
<xsl:variable name="d_hours" select="substring(@endTime, 12,2) - substring(@startTime, 12, 2)"/>
<xsl:value-of select="$d_hours*3600 + $d_minutes*60 + $d_seconds"/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:variable name="outcome">
<xsl:choose>
<xsl:when test="@outcome">
<xsl:value-of select="@outcome"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="'Error'"/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:variable name="message" select="a:Output/a:ErrorInfo/a:Message"/>
<xsl:variable name="stacktrace" select="a:Output/a:ErrorInfo/a:StackTrace"/>
<xsl:for-each select="//a:UnitTest">
<xsl:variable name="currentExecutionId" select="a:Execution/@id"/>
<xsl:if test="$currentExecutionId = $executionId" >
<xsl:variable name="className" select="substring-before(a:TestMethod/@className, ',')"/>
<testcase classname="{$className}"
name="{$testName}"
time="{$totalduration}">
<xsl:if test="contains($outcome, 'Failed')">
<failure>
MESSAGE:
<xsl:value-of select="$message" />
+++++++++++++++++++
STACK TRACE:
<xsl:value-of select="$stacktrace" />
</failure>
</xsl:if>
<xsl:if test="contains($outcome, 'Error')">
<error>
MESSAGE:
<xsl:value-of select="$message" />
+++++++++++++++++++
STACK TRACE:
<xsl:value-of select="$stacktrace" />
</error>
</xsl:if>
</testcase>
</xsl:if>
</xsl:for-each>
</xsl:for-each>
<xsl:for-each select="//b:UnitTestResult">
<xsl:variable name="testName" select="@testName"/>
<xsl:variable name="executionId" select="@executionId"/>
<xsl:variable name="testId" select="@testId"/>
<xsl:variable name="totalduration">
<xsl:choose>
<xsl:when test="@duration">
<xsl:variable name="duration_seconds" select="substring(@duration, 7)"/>
<xsl:variable name="duration_minutes" select="substring(@duration, 4,2 )"/>
<xsl:variable name="duration_hours" select="substring(@duration, 1, 2)"/>
<xsl:value-of select="$duration_hours*3600 + $duration_minutes*60 + $duration_seconds"/>
</xsl:when>
<xsl:otherwise>
<xsl:variable name="d_seconds" select="substring(@endTime, 18,10) - substring(@startTime, 18,10)"/>
<xsl:variable name="d_minutes" select="substring(@endTime, 15,2) - substring(@startTime, 15,2 )"/>
<xsl:variable name="d_hours" select="substring(@endTime, 12,2) - substring(@startTime, 12, 2)"/>
<xsl:value-of select="$d_hours*3600 + $d_minutes*60 + $d_seconds"/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:variable name="outcome">
<xsl:choose>
<xsl:when test="@outcome">
<xsl:value-of select="@outcome"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="'Error'"/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:variable name="message" select="b:Output/b:ErrorInfo/b:Message"/>
<xsl:variable name="stacktrace" select="b:Output/b:ErrorInfo/b:StackTrace"/>
<xsl:for-each select="//b:UnitTest">
<xsl:variable name="currentTestId" select="@id"/>
<xsl:if test="$currentTestId = $testId" >
<xsl:variable name="className" select="substring-before(b:TestMethod/@className, ',')"/>
<testcase classname="{$className}"
name="{$testName}"
time="{$totalduration}"
>
<xsl:if test="contains($outcome, 'Failed')">
<failure>
MESSAGE:
<xsl:value-of select="$message" />
+++++++++++++++++++
STACK TRACE:
<xsl:value-of select="$stacktrace" />
</failure>
</xsl:if>
<xsl:if test="contains($outcome, 'Error')">
<error>
MESSAGE:
<xsl:value-of select="$message" />
+++++++++++++++++++
STACK TRACE:
<xsl:value-of select="$stacktrace" />
</error>
</xsl:if>
</testcase>
</xsl:if>
</xsl:for-each>
</xsl:for-each>
</testsuite>
</testsuites>
</xsl:template>
</xsl:stylesheet>

Hey, how do you use this on circle? I'm not familiar with xslt, are you using some tool to run against this and the test output? Do you mind sharing your build file?

@shawnmclean I've used this on Jenkins. https://gist.github.com/Alegrowin/ec10e804d4ccfbe5d154c0eca79d5de6

I've also made minor improvements to this gist like using xslt 2.0 and fixing it for VS2017 aka 15.x

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