Code Tuner: NCover

If you are using Jenkins as your CI for a Net project it is not easy to publish code coverage results.In Jenkins without tools such as NCover wich is costly. Instead of this you can do this your own way.
First you need to convert MSTest results in to XML and then to HTML using xstl to publish it as an HTML report in Jenkins.
Step 1

GO to your test local.settings file in visual studio and set it to display the code coverage results an add your required targeted dll's. This is same as configuring visual studio to show the test results and code coverage.
Make sure you have added the test settings file to your version controlling system then it will be in the working space of the jenkins.
Then set path to the MSTest.exe
it may be in your \Microsoft Visual Studio 10.0\Common7\IDE folder

Step 2
Add a windows batch command to run MSTest (after running ms build) and to generate test results file (“reults.trx”) and Coverage report (“data.coverage”)

del results.trx
mstest /testcontainer:Example\TestProject1\bin\debug\TestProject1.dll /resultsfile:results.trx /testsettings:Example\local.testsettings

This will generate a code coverage result in binary format (data.coverage)

Step 3
write a console app to convert binary data.coverage file in to a XML and then it to HTML by xslt and run it after adding windows batch command in jenkins. Here is the example code for console app. Make sure you have add reference to Microsoft.VisualStudio.Coverage.Analysis.dll which you can find in the \Microsoft Visual Studio 10.0\Common7\IDE\PrivateAssemblies folder. And copy Microsoft.VisualStudio.Coverage.Symbols.dll to your bin directory which is also in same folder.

And here is the code of the style.xslt file

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
   <xsl:output method="html" indent="yes"/> 
   <xsl:template match="/" >
      <html>
         <head>
            <style type="text/css">
               th {
               background-color:#dcdcdc;
               border:solid 1px #a9a9a9;
               text-indent:2pt;
               font-weight:bolder;
               }
               #data {
               text-align: center;
               }
            </style>
			 
            <script language="JavaScript" type="text/javascript"  >
        
		  function CreateJavescript(){
		  
		  var fileref=document.createElement('script');
          fileref.setAttribute("type","text/javascript");
          fileref.setAttribute("src", "script1.js");
		   document.getElementsByTagName("head")[0].appendChild(fileref);
		  }

</script>
		
            <title>Code Coverage Report</title>
         </head>
         <body onload='CreateJavescript()' >
            <h1>Code Coverage Report</h1>
            <table border="1">
               <tr>
                  <th colspan="3"></th>
                  <th>Name</th>
                  <th>Blocks Covered</th>
                  <th>Blocks Not Covered</th>
                  <th>Coverage</th>
               </tr>
               <xsl:apply-templates select="//CoverageDSPriv/Module" />
            </table>
         </body>
      </html>
   </xsl:template>
 
   <xsl:template match="Module">
      <xsl:variable name="parentId" select="generate-id(./..)" />
      <xsl:variable name="currentId" select="generate-id(.)" />
      <tr id="{$parentId}">
         <td id="{$currentId}"      colspan="3"               onClick="toggleDetail(this)"        onMouseOver="this.style.cursor= 'pointer' ">[+]</td>
         <td><xsl:value-of select="ModuleName" /></td>
         <td id="data"><xsl:value-of select="BlocksCovered" /></td>
         <td id="data"><xsl:value-of select="BlocksNotCovered" /></td>
         <xsl:call-template name="CoverageColumn">
            <xsl:with-param name="covered" select="BlocksCovered" />
            <xsl:with-param name="uncovered" select="BlocksNotCovered" />
         </xsl:call-template>
      </tr>
      <xsl:apply-templates select="NamespaceTable" />
      <tr id="{$currentId}-end" style="display: none;">
         <td colspan="5"></td>
      </tr>
   </xsl:template>
 
   <xsl:template match="NamespaceTable">
      <xsl:variable name="parentId" select="generate-id(./..)" />
      <xsl:variable name="currentId" select="generate-id(.)" />
      <tr id="{$parentId}" style="display: none;">
         <td> - </td>
         <td id="{$currentId}"
               colspan="2"
               onClick="toggleDetail(this)"
               onMouseOver="this.style.cursor= 'pointer' ">[+]</td>
         <td><xsl:value-of select="NamespaceName" /></td>
         <td id="data"><xsl:value-of select="BlocksCovered" /></td>
         <td id="data"><xsl:value-of select="BlocksNotCovered" /></td>
         <xsl:call-template name="CoverageColumn">
            <xsl:with-param name="covered" select="BlocksCovered" />
            <xsl:with-param name="uncovered" select="BlocksNotCovered" />
         </xsl:call-template>
      </tr>
      <xsl:apply-templates select="Class" />
      <tr id="{$currentId}-end" style="display: none;">
         <td colspan="5"></td>
      </tr>
   </xsl:template>
 
   <xsl:template match="Class">
      <xsl:variable name="parentId" select="generate-id(./..)" />
      <xsl:variable name="currentId" select="generate-id(.)" />
      <tr id="{$parentId}" style="display: none;">
         <td> - </td>
         <td> - </td>
         <td id="{$currentId}"
               onClick="toggleDetail(this)"
               onMouseOver="this.style.cursor='pointer' ">[+]</td>
         <td><xsl:value-of select="ClassName" /></td>
         <td id="data"><xsl:value-of select="BlocksCovered" /></td>
         <td id="data"><xsl:value-of select="BlocksNotCovered" /></td>
         <xsl:call-template name="CoverageColumn">
            <xsl:with-param name="covered" select="BlocksCovered" />
            <xsl:with-param name="uncovered" select="BlocksNotCovered" />
         </xsl:call-template>
      </tr>
      <xsl:apply-templates select="Method" />
      <tr id="{$currentId}-end" style="display: none;">
         <td colspan="5"></td>
      </tr>
   </xsl:template>
 
   <xsl:template match="Method">
      <xsl:variable name="parentId" select="generate-id(./..)" />
      <tr id="{$parentId}" style="display: none;">
         <td> -</td>
         <td> - </td>
         <td> - </td>
         <td><xsl:value-of select="MethodName" /></td>
         <td id="data"><xsl:value-of select="BlocksCovered" /></td>
         <td id="data"><xsl:value-of select="BlocksNotCovered" /></td>
         <xsl:call-template name="CoverageColumn">
            <xsl:with-param name="covered" select="BlocksCovered" />
            <xsl:with-param name="uncovered" select="BlocksNotCovered" />
         </xsl:call-template>
      </tr>
   </xsl:template>
 
   <xsl:template name="CoverageColumn">
      <xsl:param name="covered" select="0" />
      <xsl:param name="uncovered" select="0" />
      <td id="data">
         <xsl:variable name="percent"
                              select="($covered div ($covered + $uncovered)) * 100" />
         <xsl:attribute name="style">
            background-color:
            <xsl:choose>
               <xsl:when test="number($percent >= 90)">#86ed60;</xsl:when>
               <xsl:when test="number($percent >= 70)">#ffff99;</xsl:when>
               <xsl:otherwise>#FF7979;</xsl:otherwise>
            </xsl:choose>
         </xsl:attribute>
         <xsl:if test="$percent > 0">
            <xsl:value-of select="format-number($percent, '###.##' )" />%
         </xsl:if>
         <xsl:if test="$percent = 0">
            <xsl:text>0.00%</xsl:text>
         </xsl:if>
      </td>
   </xsl:template>
</xsl:stylesheet>

If you are using MSTest here is the command windows batch command to generate test results

"C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\mstest.exe" /testcontainer: \yourTestProjectPath\YourTests.dll /testcontainer: \yourTestProjectPath2\YourTests2.dll /resultsfile:results.trx /testsettings:YourTestSettingsPath \local.testsettings

You can add several test projects using /testcontainer: argument. Here I have used two test projects. To use NCover we need to change this command by adding NCover commands . NCover arguments are started with “//” and for MSTest they started with “/”. Here Is the Ncover command to generate coverage.nccov and coverage.trend files.

"C:\Program files (x86)\NCover\NCover.Console.exe" "C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\mstest.exe" //x mstest_coverage.nccov //at "coverage.trend" /testcontainer: \yourTestProjectPath\YourTests.dll /testcontainer: \yourTestProjectPath2\YourTests2.dll /resultsfile:results.trx /testsettings:YourTestSettingsPath \local.testsettings

There are more options with NCover you can find those here Ncover command line

Now we have coverage.nccov and coverage.trend files we need to generate a HTML report from these two. For that we can use Ncover Reportng tool. Here is the Command to generate NCover HTML reports.

ncover.reporting mstest_coverage.nccov //lt coverage.trend //or FullCoverageReport:Html:output

Here we are generating full Coverage report in the directory called output

Code Tuner

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