Test-StartRunbook.ps1

#region Connect to Azure with certificate
try {
    # Get the connection "AzureRunAsConnection "
    $servicePrincipalConnection = Get-AutomationConnection -Name "AzureRunAsConnection"
    Write-Output "Logging in to Azure..."
    Add-AzureRmAccount `
        -ServicePrincipal `
        -TenantId $servicePrincipalConnection.TenantId `
        -ApplicationId $servicePrincipalConnection.ApplicationId `
        -CertificateThumbprint   $servicePrincipalConnection.CertificateThumbprint | Out-Null
    # Switch Azure subscription
    Write-Output "Switch to Azure SubscriptionId $($servicePrincipalConnection.SubscriptionId)"
    Select-AzureRmSubscription -SubscriptionId $servicePrincipalConnection.SubscriptionId | Out-Null
} catch {
    if (!$servicePrincipalConnection) {
        throw "Connection $connectionName not found."
    } else {
        throw $_.Exception
    }
}
#endregion

#region Start new runbook
$AzureAutomationRunbook = "SuperFunRunbook"
$HybridWorker = "HybridWorkerGroup"

# Set parameters
$AzureRunbookParameter = @{
    "ParameterString" = "Blue Jeans"
    "ParameterArray" = @("BLUE","BLACK")
}
# Start runbook
Get-AzureRmAutomationAccount | Start-AzureRmAutomationRunbook -Parameters $AzureRunbookParameter -Name $AzureAutomationRunbook -RunOn $HybridWorker
#endregion