Merged PR 5667: Add function to create a new nuget.config file (#8170)

Add function to create a new nuget.config file (#8170)

Add a function to create a NuGet.config file to consume packages  from the specified feed URL using the specified credentials.

  - Also, exclude the `nuget.config` file under `src/Modules` from being clean by `Start-PSBuild -clean`

# Conflicts:
#	build.psm1

build.psm1

@@ -472,7 +472,8 @@ function Start-PSBuild {
         Push-Location $PSScriptRoot
         try {
             # Excluded sqlite3 folder is due to this Roslyn issue: https://github.com/dotnet/roslyn/issues/23060
-            git clean -fdx --exclude .vs/PowerShell/v15/Server/sqlite3
+            # Excluded src/Modules/nuget.config as this is required for release build.
+            git clean -fdx --exclude .vs/PowerShell/v15/Server/sqlite3 --exclude src/Modules/nuget.config
         } finally {
             Pop-Location
         }
@@ -3243,3 +3244,105 @@ $script:RESX_TEMPLATE = @'
 {0}
 </root>
 '@
+
+function New-TestPackage
+{
+    [CmdletBinding()]
+    param(
+        [Parameter(Mandatory = $true)]
+        [string] $Destination
+    )
+
+    if (Test-Path $Destination -PathType Leaf)
+    {
+        throw "Destination: '$Destination' is not a directory or does not exist."
+    }
+    else
+    {
+        $null = New-Item -Path $Destination -ItemType Directory -Force
+        Write-Verbose -Message "Creating destination folder: $Destination"
+    }
+
+    $rootFolder = $env:TEMP
+
+    if (-not $rootFolder -and $env:TF_BUILD) {
+        $rootFolder = $env:AGENT_WORKFOLDER
+    }
+
+    Write-Verbose -Verbose "RootFolder: $rootFolder"
+
+    $packageRoot = Join-Path $rootFolder ('TestPackage-' + (new-guid))
+    $null = New-Item -ItemType Directory -Path $packageRoot -Force
+    $packagePath = Join-Path $Destination "TestPackage.zip"
+    Write-Verbose -Verbose "PackagePath: $packagePath"
+
+    # Build test tools so they are placed in appropriate folders under 'test' then copy to package root.
+    $null = Publish-PSTestTools
+    $powerShellTestRoot =  Join-Path $PSScriptRoot 'test'
+    Copy-Item $powerShellTestRoot -Recurse -Destination $packageRoot -Force
+    Write-Verbose -Message "Copied test directory"
+
+    # Copy assests folder to package root for wix related tests.
+    $assetsPath = Join-Path $PSScriptRoot 'assets'
+    Copy-Item $assetsPath -Recurse -Destination $packageRoot -Force
+    Write-Verbose -Message "Copied assests directory"
+
+    # Create expected folder structure for resx files in package root.
+    $srcRootForResx = New-Item -Path "$packageRoot/src" -Force -ItemType Directory
+
+    $resourceDirectories = Get-ChildItem -Recurse "$PSScriptRoot/src" -Directory -Filter 'resources'
+
+    $resourceDirectories | ForEach-Object {
+        $directoryFullName = $_.FullName
+
+        $partToRemove = Join-Path $PSScriptRoot "src"
+
+        $assemblyPart = $directoryFullName.Replace($partToRemove, '')
+        $assemblyPart = $assemblyPart.TrimStart([io.path]::DirectorySeparatorChar)
+        $resxDestPath = Join-Path $srcRootForResx $assemblyPart
+        $null = New-Item -Path $resxDestPath -Force -ItemType Directory
+        Write-Verbose -Message "Created resx directory : $resxDestPath"
+        Copy-Item -Path "$directoryFullName\*" -Recurse $resxDestPath -Force
+    }
+
+    Add-Type -AssemblyName System.IO.Compression.FileSystem
+
+    if(Test-Path $packagePath)
+    {
+        Remove-Item -Path $packagePath -Force
+    }
+
+    [System.IO.Compression.ZipFile]::CreateFromDirectory($packageRoot, $packagePath)
+}
+
+function New-NugetConfigFile
+{
+    param(
+        [Parameter(Mandatory=$true)] [string] $NugetFeedUrl,
+        [Parameter(Mandatory=$true)] [string] $FeedName,
+        [Parameter(Mandatory=$true)] [string] $UserName,
+        [Parameter(Mandatory=$true)] [string] $ClearTextPAT,
+        [Parameter(Mandatory=$true)] [string] $Destination
+    )
+
+    $nugetConfigTemplate = @'
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <clear />
+    <add key="[FEEDNAME]" value="[FEED]" />
+    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
+  </packageSources>
+  <packageSourceCredentials>
+    <[FEEDNAME]>
+      <add key="Username" value="[USERNAME]" />
+      <add key="ClearTextPassword" value="[PASSWORD]" />
+    </[FEEDNAME]>
+  </packageSourceCredentials>
+</configuration>
+'@
+
+    $content = $nugetConfigTemplate.Replace('[FEED]', $NugetFeedUrl).Replace('[FEEDNAME]', $FeedName).Replace('[USERNAME]', $UserName).Replace('[PASSWORD]', $ClearTextPAT)
+
+    Set-Content -Path (Join-Path $Destination 'nuget.config') -Value $content -Force
+}