Create test-create-pfx.yml to test workflow

.github/workflows/test-create-pfx.yml

@@ -0,0 +1,48 @@
+# This workflow will build, sign, and package a WinUI 3 MSIX desktop application
+# built on .NET.
+
+name: Test Create GitHubActionsWorkflow.pfx
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+
+  build:
+
+    strategy:
+      matrix:
+        configuration: [Release]
+        platform: [x64]
+
+    runs-on: windows-latest  # For a list of available runner types, refer to
+                             # https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjob_idruns-on
+
+    env:
+      Solution_Name: TestStringResource.sln                        # Replace with your solution name, i.e. App1.sln.
+      WinUI_Project_Dir: TestStringResourceWinUIApp
+      WinUI_Project_Path: TestStringResourceWinUIApp\TestStringResourceWinUIApp.csproj
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+
+    # Decode the base 64 encoded pfx and save the Signing_Certificate
+    - name: Decode the pfx
+      run: |
+        $pfx_cert_byte = [System.Convert]::FromBase64String("${{ secrets.BASE64_ENCODED_PFX }}")
+        $currentDirectory = Get-Location
+        $certificatePath = Join-Path -Path $currentDirectory -ChildPath $env:WinUI_Project_Dir -AdditionalChildPath GitHubActionsWorkflow.pfx
+        [IO.File]::WriteAllBytes("$certificatePath", $pfx_cert_byte)
+        if (![IO.File]::Exists("$certificatePath")) { return 1 }
+        echo $certificatePath >> $env:certificatePath
+      
+    # Remove the pfx
+    - name: Remove the pfx
+      run: Remove-Item -path $env:certificatePath