Resolving Failing DataMovement Tests (Azure#48458)

* during pullrequest invocations, restore all the assets.json files prior to invoking tests

Author: scbedd

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

@@ -125,6 +125,7 @@ jobs:
         - template: /eng/pipelines/templates/steps/set-artifact-packages.yml
           parameters:
             PackageInfo: '$(Build.SourcesDirectory)/PackageInfo'
+            Restore: true
 
         - pwsh: |
             if ("$(ProjectNames)" -like "*storage*") {

eng/pipelines/templates/steps/set-artifact-packages.yml

@@ -2,6 +2,7 @@ parameters:
   PackageInfo: ''
   Artifacts: []
   IncludeIndirect: true
+  Restore: false
 steps:
   # Package-Properties folder contains the package properties for all discovered packages that were either A) affected by the PR or
   # B) explicitly present in the service directory. This repo splits the builds into two categories: "mgmt" and "dataplane". While
@@ -49,3 +50,26 @@ steps:
     displayName: Resolve Service and Project List
     condition: ne(variables['ProjectNames'], '')
 
+  - ${{ if eq(parameters.Restore, true) }}:
+    - template: /eng/common/testproxy/test-proxy-tool.yml
+      parameters:
+        runProxy: false
+
+    - pwsh: |
+        $packageProperties = Get-ChildItem -Recurse '${{ parameters.PackageInfo }}' -Filter *.json `
+          | Foreach-Object { Get-Content -Raw -Path $_.FullName | ConvertFrom-Json }
+        $packageSet = "$(ProjectNames)" -split ","
+        $changedProjects = $packageProperties | Where-Object { $packageSet -contains $_.ArtifactName }
+
+        foreach ($proj in $changedProjects) {
+          $assets = Join-Path (Join-Path "$(Build.SourcesDirectory)" $proj.DirectoryPath) "assets.json"
+          if (Test-Path $assets) {
+            Write-Host "Restoring $assets"
+            if ($IsWindows) {
+              & "$(Build.BinariesDirectory)/test-proxy/test-proxy.exe" restore -a $assets
+            } else {
+              & "$(Build.BinariesDirectory)/test-proxy/test-proxy" restore -a $assets
+            }
+          }
+        }
+      displayName: Restore Recordings