functions/New-PSTGViewColumnTest.ps1
|
function New-PSTGViewColumnTest { <# .SYNOPSIS Function to create view column tests .DESCRIPTION The function will retrieve the columns for a view and create a test for it .PARAMETER SqlInstance The target SQL Server instance or instances. Server version must be SQL Server version 2012 or higher. .PARAMETER SqlCredential Login to the target instance using alternative credentials. Accepts PowerShell credentials (Get-Credential). Windows Authentication, SQL Server Authentication, Active Directory - Password, and Active Directory - Integrated are all supported. For MFA support, please use Connect-DbaInstance. .PARAMETER Database The database or databases to add. .PARAMETER View View(s) to create tests forr .PARAMETER OutputPath Path to output the test to .PARAMETER Creator The person that created the tests. By default the command will get the environment username .PARAMETER TemplateFolder Path to template folder. By default the internal templates folder will be used .PARAMETER TestClass Test class name to use for the test .PARAMETER InputObject Takes the parameters required from a View object that has been piped into the command .PARAMETER WhatIf Shows what would happen if the command were to run. No actions are actually performed. .PARAMETER Confirm Prompts you for confirmation before executing any changing operations within the command. .PARAMETER EnableException By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message. This avoids overwhelming you with "sea of red" exceptions, but is inconvenient because it basically disables advanced scripting. Using this switch turns this "nice by default" feature off and enables you to catch exceptions with your own try/catch. .EXAMPLE New-PSTGViewColumnTest -View $view -OutputPath $OutputPath Create a new view column test .EXAMPLE $views | New-PSTGViewColumnTest -OutputPath $OutputPath Create the tests using pipelines #> [CmdletBinding(SupportsShouldProcess)] param( [DbaInstanceParameter]$SqlInstance, [pscredential]$SqlCredential, [string]$Database, [string[]]$View, [string]$OutputPath, [string]$Creator, [string]$TemplateFolder, [string]$TestClass, [parameter(ParameterSetName = "InputObject", ValueFromPipeline)] [object[]]$InputObject, [switch]$EnableException ) begin { # Check parameters if (-not $SqlInstance) { Stop-PSFFunction -Message "Please enter a SQL Server instance" -Target $SqlInstance return } if (-not $Database) { Stop-PSFFunction -Message "Please enter a database" -Target $Database return } # Check the output path if (-not $OutputPath) { Stop-PSFFunction -Message "Please enter an output path" return } if (-not (Test-Path -Path $OutputPath)) { try { $null = New-Item -Path $OutputPath -ItemType Directory } catch { Stop-PSFFunction -Message "Something went wrong creating the output directory" -Target $OutputPath -ErrorRecord $_ } } # Check the template folder if (-not $TemplateFolder) { $TemplateFolder = Join-Path -Path ($script:ModuleRoot) -ChildPath "internal\templates" } if (-not (Test-Path -Path $TemplateFolder)) { Stop-PSFFunction -Message "Could not find template folder" -Target $OutputPath } if (-not $TestClass) { $TestClass = "TestBasic" } $date = Get-Date -Format (Get-culture).DateTimeFormat.ShortDatePattern if (-not $Creator) { $Creator = $env:username } # Connect to the server try { $server = Connect-DbaInstance -SqlInstance $Sqlinstance -SqlCredential $SqlCredential } catch { Stop-PSFFunction -Message "Could not connect to '$Sqlinstance'" -Target $Sqlinstance -ErrorRecord $_ -Category ConnectionError return } # Check if the database exists if ($Database -notin $server.Databases.Name) { Stop-PSFFunction -Message "Database cannot be found on '$SqlInstance'" -Target $Database } $task = "Collecting objects" Write-Progress -ParentId 1 -Activity " View Columns" -Status 'Progress->' -CurrentOperation $task -Id 2 } process { if (Test-PSFFunctionInterrupt) { return } if (-not $InputObject -and -not $View -and -not $SqlInstance) { Stop-PSFFunction -Message "You must pipe in an object or specify a View" return } $objects = @() if ($InputObject) { $objects += $server.Databases[$Database].Views | Where-Object Name -in $InputObject | Select-Object Schema, Name, Columns } else { $objects += $server.Databases[$Database].Views | Where-Object IsSystemObject -eq $false | Select-Object Schema, Name, Columns } if ($View) { $objects = $objects | Where-Object Name -in $View } $objectCount = $objects.Count $objectStep = 1 if ($objectCount -ge 1) { foreach ($viewObject in $objects) { $task = "Creating view $($objectStep) of $($objectCount)" Write-Progress -ParentId 1 -Activity "Creating..." -Status 'Progress->' -PercentComplete ($objectStep / $objectCount * 100) -CurrentOperation $task -Id 2 $testName = "test If view $($viewObject.Schema).$($viewObject.Name) has the correct columns" # Test if the name of the test does not become too long if ($testName.Length -gt 128) { Stop-PSFFunction -Message "Name of the test is too long" -Target $testName } $fileName = Join-Path -Path $OutputPath -ChildPath "$($testName).sql" $date = Get-Date -Format (Get-culture).DateTimeFormat.ShortDatePattern $creator = $env:username # Import the template try { $script = Get-Content -Path (Join-Path -Path $TemplateFolder -ChildPath "ViewColumnTest.template") } catch { Stop-PSFFunction -Message "Could not import test template 'ViewColumnTest.template'" -Target $testName -ErrorRecord $_ } # Get the columns $query = "SELECT c.name AS ColumnName, st.name AS DataType, c.max_length AS MaxLength, c.precision AS [Precision], c.scale AS Scale FROM sys.columns AS c INNER JOIN sys.views AS v ON v.object_id = c.object_id INNER JOIN sys.schemas AS s ON s.schema_id = v.schema_id LEFT JOIN sys.types AS st ON st.user_type_id = c.user_type_id WHERE v.type = 'V' AND s.name = '$($viewObject.Schema)' AND v.name = '$($viewObject.Name)' ORDER BY v.name, c.name;" try { $columns = Invoke-DbaQuery -SqlInstance $SqlInstance -SqlCredential $SqlCredential -Database $Database -Query $query } catch { Stop-PSFFunction -Message "Could not retrieve columns for [$($viewObject.Schema)].[$($viewObject.Name)]" -Target $viewObject -Continue } $columnTextCollection = @() # Loop through the columns foreach ($column in $columns) { $columnText = "`t('$($column.ColumnName)', '$($column.DataType)', $($column.MaxLength), $($column.Precision), $($column.Scale))" $columnTextCollection += $columnText } # Replace the markers with the content $script = $script.Replace("___TESTCLASS___", $TestClass) $script = $script.Replace("___TESTNAME___", $testName) $script = $script.Replace("___SCHEMA___", $viewObject.Schema) $script = $script.Replace("___NAME___", $viewObject.Name) $script = $script.Replace("___CREATOR___", $creator) $script = $script.Replace("___DATE___", $date) $script = $script.Replace("___COLUMNS___", ($columnTextCollection -join ",`n") + ";") # Write the test if ($PSCmdlet.ShouldProcess("$($viewObject.Schema).$($viewObject.Name)", "Writing View Column Test")) { try { Write-PSFMessage -Message "Creating view column test for table '$($viewObject.Schema).$($viewObject.Name)'" $script | Out-File -FilePath $fileName [PSCustomObject]@{ TestName = $testName Category = "ViewColumn" Creator = $creator FileName = $fileName } } catch { Stop-PSFFunction -Message "Something went wrong writing the test" -Target $testName -ErrorRecord $_ } } $objectStep++ } } } } |