How can I force exclusion of certain assemblies from Code Coverage?

Question

I'm trying to restrict the assemblies that get analyzed in the Code Coverage procedure in TFS by using a runsettings file, but some assemblies insist in being analyzed even if I exclude them explicitly.

This is my current runsettings file contents:

<?xml version="1.0" encoding="utf-8"?>
<RunSettings>
  <!-- Configurations for data collectors -->
  <DataCollectionRunSettings>
    <DataCollectors>
      <DataCollector friendlyName="Code Coverage" 
                     uri="datacollector://Microsoft/CodeCoverage/2.0" 
                     assemblyQualifiedName="Microsoft.VisualStudio.Coverage.DynamicCoverageDataCollector, Microsoft.VisualStudio.TraceCollector, Version=11.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
        <Configuration>
          <CodeCoverage>
            <ModulePaths>
              <Include>
                <ModulePath>.*Cloud4Mobile.*</ModulePath>
              </Include>
              <Exclude>
                <ModulePath>.*Tests.dll$</ModulePath>
                <ModulePath>.*TestUtilities.dll$</ModulePath>
              </Exclude>
            </ModulePaths>
            <CompanyNames>
              <Include>.*Mobiltec.*</Include>
            </CompanyNames>
          </CodeCoverage>
        </Configuration>
      </DataCollector>
    </DataCollectors>
  </DataCollectionRunSettings>
</RunSettings>

But when I run code coverage from Visual Studio to test this file, the analysis still shows me other assemblies that do not match my filter, like AutoMapper and CacheManager:

Note that my settings already exclude these assemblies by default, but even then I tried to explicitly exclude them to no avail, like this:

<Exclude>
  <ModulePath>^AutoMapper.dll$</ModulePath>
  ...
</Exclude>

I tried all variations of the regex there, from the less restrictive (using .*) to the most restrictive (like that example). These assemblies are polluting the report that I get on the TFS Build summary, and I'd like to remove them from the analysis. This is the full output that I was getting from TFS, which is obviously quite useless:

I managed to remove most of those with this .runsettings configuration file, but how do I make sure these outliers do not show there too? Why are they even showing in the first place, considering they were not matched by my include filters at all?

Answer 1

My guess would be that the . in Automapper.dll is causing the problem. Could you try using

<Exclude>
  <ModulePath>.*AutoMapper\.dll$</ModulePath>

For your case of excluding everything by default you should just use .*\.dll in the modulepaths exclusions.