Testando CORS através do PowerShell

cors-test.ps1

$response = Invoke-WebRequest -Uri "https://#FILL_TARGET_HERE#" -Method Options -Headers @{
    "Origin"                         = "https://#FILL_ORIGIN_HERE#"
    "Access-Control-Request-Method"  = "GET"
    "Access-Control-Request-Headers" = "Authorization"
    "Accept"                         = "application/json"
} -UseBasicParsing

$color = "Red"
$headers = $response.Headers | ConvertTo-Json
if ($headers -match "Access-Control-Allow-Origin") {
    $color = "DarkGreen"
}

$formatedResponse = $response | Select-Object * -ExcludeProperty BaseResponse | ConvertTo-Json -Depth 5
Write-Host $formatedResponse -ForegroundColor $color