Querying failed unit tests from TFS-SDK?

Question

Given a TFS build detail (IBuildDetail) with .Status of PartialSuccess, and .TestStatus of Failed how might I go about retrieving the list of tests (MSTest) that have failed on that build?

I have a working sandbox in which I can contact TFS via the SDK and retrieve the latest PartialSuccess build, but can't seem to find which service might have this unit test data and how I might go about querying it.

Can anyone shed some light?

Answer 1

This article is a great resource, actually it was the only one I had found available when I was searching something similar.
In general you need access to ITestManagementService.
Given you already have connection to a teamProjectCollection and a buildDetail, something like this should work out for you :

var tstService = (ITestManagementService)teamProjectCollection.GetService(typeof(ITestManagementService));
ITestManagementTeamProject testManagementTeamProject = tstService.GetTeamProject(buildDetail.TeamProject);

IEnumerable<ITestRun> testRuns =  testManagementTeamProject.TestRuns.ByBuild(buildDetail.Uri);

foreach (var testRun in testRuns)
{
    ITestCaseResultCollection testcases = testRun.QueryResultsByOutcome(TestOutcome.Failed);
    foreach (var testcase in testcases)
    {
        Console.WriteLine("TestCase ID: " + testcase.TestCaseId);
        Console.WriteLine("TestCase Title: " + testcase.TestCaseTitle);
        Console.WriteLine("Error Message: " + testcase.ErrorMessage);                  
    }
}

(This code is basically a copy from the article above, it is work by Anuj Chaudhary)

Remember to add "Microsoft.TeamFoundation.TestManagement.Client" in your ref list.