Is there a tool to merge NUnit result files?

nunit

Solution

This is probably too late to help you, but we recently encountered a similar issue and wrote a small open source tool to help out: https://github.com/15below/NUnitMerger

From the readme:

Using in MSBuild

Load the task:

<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003"
             ToolsVersion="4.0"
             DefaultTargets="Build">
  <UsingTask AssemblyFile="$(MSBuildProjectDirectory)\..\Tools\MSBuild\15below.NUnitMerger.dll" TaskName="FifteenBelow.NUnitMerger.MSBuild.NUnitMergeTask" />
  ...

Feed it an array of files with in a target:

  <Target Name="UnitTest" DependsOnTargets="OtherThings">
    ... Generate the individual files here in $(TestResultsDir) ...

    <ItemGroup>
      <ResultsFiles Include="$(TestResultsDir)\*.xml" />
    </ItemGroup> 

    <NUnitMergeTask FilesToBeMerged="@(ResultsFiles)" OutputPath="$(MSBuildProjectDirectory)\TestResult.xml" />
  </Target>

Find the resulting combined results at OutputPath.

Using in F#

Create an F# console app and add 15below.NUnitMerger.dll, System.Xml and System.Xml.Linq as references.

open FifteenBelow.NUnitMerger.Core
open System.IO
open System.Xml.Linq

// All my files are in one directory
WriteMergedNunitResults (@"..\testdir", "*.xml", "myMergedResults.xml")

// I want files from all over the place
let myFiles = ... some filenames as a Seq

myFiles
|> Seq.map (fun fileName -> XDocument.Parse(File.ReadAllText(fileName)))
|> FoldDocs
|> CreateMerged
|> fun x -> File.WriteAllText("myOtherMergedResults.xml", x.ToString())

Problem

For unclear reasons my Nunit test fixture cannot be executed in a single run, so I'm forced to execute a few tests in separate runs. However this means that the test results are splitted over multiple output files. Is there a tool available which can merge NUnit result XML files into a single XML file? I've tried using the existing Nunit-summary tool, but this simply sequentially parses the XML files with the given XSL file and concatenates the result as one big file. Instead I would like it to merge/group the results for the test cases into the right namespaces/testfixtures first and then feed it to the XSLT processor. This way all test results should be displayed by fixture even though they're not gathered in a single run.

Original source