Add llm artifact upload step (test results artifacts)

eng/pipelines/templates/jobs/ci.tests.yml

@@ -73,6 +73,11 @@ jobs:
           artifactName: "Crash Dump - $(System.JobName) - $(System.JobAttempt)"
           condition: eq(variables['uploadDump'], 'true')
           sbomEnabled: false
+        - output: pipelineArtifact
+          targetPath: '$(Build.ArtifactStagingDirectory)/llm-artifacts'
+          artifactName: "LLM Artifacts - $(System.JobName) - $(System.JobAttempt)"
+          condition: eq(variables['uploadTestResults'], 'true')
+          sbomEnabled: false
 
     steps:
       - ${{ if not(contains(variables['Build.DefinitionName'], '-pr - ')) }}:
@@ -185,6 +190,7 @@ jobs:
           testResultsFormat: "VSTest"
           mergeTestResults: true
       - template: /eng/pipelines/templates/steps/upload-dumps.yml
+      - template: /eng/pipelines/templates/steps/upload-llm-artifacts.yml
       - task: Palmmedia.reportgenerator.reportgenerator-build-release-task.reportgenerator@5
         condition: and(succeededOrFailed(), eq(variables['CollectCoverage'], 'true'), eq(variables['coverage.collected'], 'true'))
         displayName: Generate Code Coverage Reports

eng/pipelines/templates/steps/upload-llm-artifacts.yml

@@ -0,0 +1,29 @@
+# This template serves as a place to upload artifacts intended to be used by LLMs
+# that handle data from the pipeline (for example github copilot).
+
+steps:
+  - pwsh: |
+      $artifactsDirectory = "$(Build.ArtifactStagingDirectory)/llm-artifacts"
+      New-Item $artifactsDirectory -ItemType directory -Force
+
+      Write-Host "================="
+      Get-ChildItem -Path $(TestTargetFramework)*.trx -Recurse -File
+      Write-Host "================="
+
+      foreach($testResultsFile in (Get-ChildItem -Path $(TestTargetFramework)*.trx -Recurse -File))
+      {
+        $fileFullName = $testResultsFile.FullName
+
+        # Convert a path like
+        #   /mnt/vss/_work/1/s/sdk/template/Azure.Template/tests/TestResults/net8.0.trx
+        # to
+        #   template-Azure.Template-net8.0.trx
+        $serviceAndPackage = ($fileFullName -split 'sdk[\\/]|[\\/]tests')[1] -replace '[\\/]', '-'
+        $trxFile     = Split-Path $fileFullName -Leaf
+        $fileName  = "$serviceAndPackage-$trxFile"
+
+        Move-Item -Path $fileFullName -Destination "$artifactsDirectory/$fileName" -ErrorAction Continue
+        Write-Host "##vso[task.setvariable variable=uploadTestResults]true"
+      }
+    condition: succeededOrFailed()
+    displayName: Copy test results files to llm artifacts staging directory