tests/Test-SqlUpdates.ps1

function Test-SqlUpdates {
    [CmdletBinding()]
    param (
        [parameter()][string] $TestName = "SQL Server Update Status",
        [parameter()][string] $TestGroup = "configuration",
        [parameter()][string] $TestCategory = "SQL",
        [parameter()][string] $Description = "Verify SQL Updates and Service Packs",
        [parameter()][hashtable] $ScriptParams
    )
    try {
        $startTime = (Get-Date)
        [System.Collections.Generic.List[PSObject]]$tempdata = @() # for detailed test output to return if needed
        $stat   = "PASS"
        $except = "WARNING"
        $msg    = "No issues found"
        if ($null -ne $ScriptParams.Credential) {
            Write-Log -Message "connecting with explicit credentials"
            try {
                $res = Test-DbaBuild -Latest -SqlInstance $ScriptParams.SqlInstance -SqlCredential $ScriptParams.Credential -ErrorAction SilentlyContinue
                if ($null -eq $res) {
                    $bcurrent = $null
                    $btarget  = $null
                    $stat     = "ERROR"
                    $msg      = "Unable to connect to SQL instance ($($ScriptParams.SqlInstance))"
                } elseif ($res.Compliant -ne $True) {
                    $bcurrent = $res.BuildLevel
                    $btarget  = $res.BuildTarget
                    $stat = $except
                    $msg = "SQL $($res.NameLevel) build level is $($bcurrent), but should be $($btarget): SP: $($res.SPTarget) CU: $($res.CULevel)"
                }
                $res | Foreach-Object {
                    $tempdata.Add(
                        [pscustomobject]@{
                            Build = $_.BuildLevel
                            Target = $_.BuildTarget
                        }
                    )
                }
            }
            catch {
                $res = Get-DbaBuild -SqlInstance $ScriptParams.SqlInstance
                $tempdata.Add(
                    [PSCustomObject]@{
                        SqlInstance    = $res.SqlInstance
                        Build          = $res.Build
                        NameLevel      = $res.NameLevel
                        SPLevel        = $res.SPLevel
                        CULevel        = $res.CULevel
                        KBLevel        = $res.KBLevel
                        BuildLevel     = $res.BuildLevel
                        SupportedUntil = $res.SupportedUntil
                    }
                )
            }
        } else {
            Write-Log -Message "connecting with default credentials"
            try {
                $res = Test-DbaBuild -Latest -SqlInstance $ScriptParams.SqlInstance -ErrorAction SilentlyContinue
                if ($null -eq $res) {
                    $bcurrent = $null
                    $btarget  = $null
                    $stat     = "ERROR"
                    $msg      = "Unable to connect to SQL instance ($($ScriptParams.SqlInstance))"
                } elseif ($res.Compliant -ne $True) {
                    $bcurrent = $res.BuildLevel
                    $btarget  = $res.BuildTarget
                    $stat = $except
                    $msg = "SQL $($res.NameLevel) build level is $($bcurrent), but should be $($btarget): SP: $($res.SPTarget) CU: $($res.CULevel)"
                }
                $res | Foreach-Object {
                    $tempdata.Add(
                        [pscustomobject]@{
                            Build = $_.BuildLevel
                            Target = $_.BuildTarget
                        }
                    )
                }
            }
            catch {
                $res = Get-DbaBuild -SqlInstance $ScriptParams.SqlInstance
                $tempdata.Add(
                    [PSCustomObject]@{
                        SqlInstance    = $res.SqlInstance
                        Build          = $res.Build
                        NameLevel      = $res.NameLevel
                        SPLevel        = $res.SPLevel
                        CULevel        = $res.CULevel
                        KBLevel        = $res.KBLevel
                        BuildLevel     = $res.BuildLevel
                        SupportedUntil = $res.SupportedUntil
                    }
                )
            }
        }
    }
    catch {
        $stat = 'ERROR'
        $msg = $_.Exception.Message -join ';'
    }
    finally {
        Set-CmhOutputData
    }
}