[CI] Allow the windows tests to work on post build pipelines. (dotnet#20606)

Author: mandel-macaque

tools/devops/automation/templates/windows/build.yml

@@ -40,20 +40,55 @@ steps:
 - pwsh: $(System.DefaultWorkingDirectory)/xamarin-macios/tools/devops/automation/scripts/show_env.ps1
   displayName: 'Dump Environment'
 
-- task: DownloadPipelineArtifact@2
-  displayName: Download artifacts
-  inputs:
-    allowFailedBuilds: true
-    path: $(Build.SourcesDirectory)/artifacts
+- ${{ if or(contains(variables['Build.Reason'], 'ResourceTrigger'), contains(variables['Build.Reason'], 'BuildCompletion'), contains(variables['Build.DefinitionName'], 'xamarin-macios-ci-tests'), contains(variables['Build.DefinitionName'], 'xamarin-macios-pr-tests')) }}:
+  - download: macios
+    displayName: Download Build.props
+    artifact: Build.props
+
+  - download: macios
+    displayName: Download package-test-libraries
+    artifact: package-test-libraries
+
+  - download: macios
+    displayName: Download build-configuration
+    artifact: build-configuration
+
+  - download: macios
+    displayName: Download not-signed-package
+    artifact: not-signed-package
+
+  - download: macios
+    displayName: Download WorkloadRollback.json
+    artifact: WorkloadRollback
+
+  - pwsh: |
+      Get-ChildItem -Path "$(Pipeline.Workspace)/macios" -Recurse -Force
+    displayName: 'Display downloads'
+    timeoutInMinutes: 5
+
+  # the default location when downloading is $(Pipeline.Workspace)/<pipeline resource identifier>/<artifact name>
+  - pwsh: |
+      $source="$(Pipeline.Workspace)/macios"
+      $destination="$(Build.SourcesDirectory)/artifacts"
+      # move all the files from the source to the destination
+      Move-Item -Path "$source" -Destination "$destination" -Force
+    displayName: Move artifacts to the expected location
+
+- ${{ else }}:
+  - task: DownloadPipelineArtifact@2
+    displayName: Download artifacts
+    inputs:
+      allowFailedBuilds: true
+      path: $(Build.SourcesDirectory)/artifacts
 
 - pwsh: |
     Get-ChildItem $(Build.SourcesDirectory)/artifacts -Recurse 
   displayName: "Debug downloads"
 
 - pwsh: |
     try {
-      Write-Host "Looking in '$(Build.SourcesDirectory)\artifacts"
-      Get-ChildItem "$(Build.SourcesDirectory)\artifacts" -Recurse
+      Write-Host "Looking in '$(Build.SourcesDirectory)\\artifacts"
+      Get-ChildItem "$(Build.SourcesDirectory)\\artifacts" -Recurse
     } catch {
       Write-Host "Exception occured: $_"
     }
@@ -150,7 +185,7 @@ steps:
   displayName: 'Install custom .NET'
 
 - pwsh: |
-    $Env:DOTNET = "$(Build.SourcesDirectory)\xamarin-macios\tests\dotnet\Windows\bin\dotnet\dotnet.exe"
+    $Env:DOTNET = "$(Build.SourcesDirectory)\xamarin-macios\\tests\dotnet\Windows\\bin\dotnet\dotnet.exe"
     & dotnet build "$(Build.SourcesDirectory)/xamarin-macios/tests/dotnet/Windows/InstallDotNet.csproj" `
       --verbosity quiet `
       "-bl:$(Build.SourcesDirectory)/xamarin-macios/tests/dotnet/Windows/install-workloads.binlog" `

tools/devops/automation/templates/windows/reserve-mac.yml

@@ -96,11 +96,47 @@ steps:
   displayName: "Autorize id_rsa.pub"
   continueOnError: true
 
-- task: DownloadPipelineArtifact@2
-  displayName: Download artifacts
-  inputs:
-    allowFailedBuilds: true
-    path: $(Build.SourcesDirectory)/artifacts
+- ${{ if or(contains(variables['Build.Reason'], 'ResourceTrigger'), contains(variables['Build.Reason'], 'BuildCompletion'), contains(variables['Build.DefinitionName'], 'xamarin-macios-ci-tests'), contains(variables['Build.DefinitionName'], 'xamarin-macios-pr-tests')) }}:
+
+  - download: macios
+    displayName: Download Build.props
+    artifact: Build.props
+
+  - download: macios
+    displayName: Download package-test-libraries
+    artifact: package-test-libraries
+
+  - download: macios
+    displayName: Download build-configuration
+    artifact: build-configuration
+
+  - download: macios
+    displayName: Download not-signed-package
+    artifact: not-signed-package
+
+  - download: macios
+    displayName: Download WorkloadRollback.json
+    artifact: WorkloadRollback
+
+  - pwsh: |
+      Get-ChildItem -Path "$(Pipeline.Workspace)/macios" -Recurse -Force
+    displayName: 'Display downloads'
+    timeoutInMinutes: 5
+
+  # the default location when downloading is $(Pipeline.Workspace)/<pipeline resource identifier>/<artifact name>
+  - bash: |
+      source="$PIPELINE_WORKSPACE/macios"
+      destination="$BUILD_SOURCESDIRECTORY/artifacts"
+      # move all the files from the source to the destination
+      mv -fv "$source" "$destination"
+    displayName: Move artifacts to the expected location
+
+- ${{ else }}:
+  - task: DownloadPipelineArtifact@2
+    displayName: Download artifacts
+    inputs:
+      allowFailedBuilds: true
+      path: $(Build.SourcesDirectory)/artifacts
 
 - bash: $(Build.SourcesDirectory)/xamarin-macios/tools/devops/automation/scripts/bash/install-workloads.sh
   workingDirectory: $(System.DefaultWorkingDirectory)/xamarin-macios