Test core and template when no packages changed (Azure#2142)

* Test core and template when no packages changed

* Test projects if their service files change

* Update eng/scripts/Language-Settings.ps1

Co-authored-by: Scott Beddall <[email protected]>

* Move array declaration down for easier reading

---------

Co-authored-by: Scott Beddall <[email protected]>

Author: hallipr

eng/scripts/Language-Settings.ps1

@@ -118,6 +118,28 @@ function Get-AllPackageInfoFromRepo ([string] $ServiceDirectory) {
   return $allPackageProps
 }
 
+function Get-rust-AdditionalValidationPackagesFromPackageSet ($packagesWithChanges, $diff, $allPackageProperties) {
+  # if the change was in a service directory, but not in a package directory, test all the packages in the service directory
+  [array]$serviceFiles = ($diff.ChangedFiles + $diff.DeletedFiles) | ForEach-Object { $_ -replace '\\', '/' } | Where-Object { $_ -match "^sdk/.+/" }
+  # remove files that target any specific package
+  foreach ($package in $allPackageProperties) {
+    $serviceFiles = $serviceFiles | Where-Object { "$RepoRoot/$_" -notmatch "^$($package.DirectoryPath)/" }
+  }
+
+  $affectedServiceDirectories = $serviceFiles | ForEach-Object { $_ -replace '^sdk/(.+?)/.*', '$1' } | Sort-Object -Unique
+
+  $affectedPackages = $allPackageProperties | Where-Object { $affectedServiceDirectories -contains $_.ServiceDirectory }
+
+  [array]$additionalPackages = $affectedPackages | Where-Object { $packagesWithChanges -notcontains $_ }
+
+  # if the change affected no packages, e.g. eng/common change, we use core and template for validation
+  if ($additionalPackages.Length -eq 0) {
+    $additionalPackages += $allPackageProperties | Where-Object { $_.Name -eq "azure_core" -or $_.Name -eq "azure_template" }
+  }
+
+  return $additionalPackages
+}
+
 function Get-rust-PackageInfoFromPackageFile([IO.FileInfo]$pkg, [string]$workingDirectory) {
   #$pkg will be a FileInfo object for the cargo-metadata.json file in a package artifact directory
   $package = Get-Content -Path $pkg.FullName -Raw | ConvertFrom-Json