functions/New-PSTGIndexColumnTest.ps1
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function New-PSTGIndexColumnTest { <# .SYNOPSIS Function to test the columns for an index .DESCRIPTION The function will retrieve the current columns for an index 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 Table Table(s) to create tests for .PARAMETER Index Index(es) to create tests for .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 Table 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-PSTGIndexColumnTest -Table $table -OutputPath $OutputPath Create a new index column test .EXAMPLE $tables | New-PSTGIndexColumnTest -OutputPath $OutputPath Create the tests using pipelines #> [CmdletBinding(SupportsShouldProcess)] param( [DbaInstanceParameter]$SqlInstance, [pscredential]$SqlCredential, [string]$Database, [string[]]$Table, [string[]]$Index, [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 $server.Databases.Name) { Stop-PSFFunction -Message "Database '$Database' cannot be found on '$SqlInstance'" -Target $Database } $task = "Collecting objects" Write-Progress -ParentId 1 -Activity " Index Columns" -Status 'Progress->' -CurrentOperation $task -Id 2 $tables = @() if ($Table) { $tables += $server.Databases[$Database].Tables | Where-Object { $_.IsSystemObject -eq $false -and $_.Name -in $Table } | Select-Object Schema, Name, Indexes } else { $tables += $server.Databases[$Database].Tables | Where-Object { $_.IsSystemObject -eq $false } | Select-Object Schema, Name, Indexes } } process { if (Test-PSFFunctionInterrupt) { return } if (-not $InputObject -and -not $Table -and -not $SqlInstance) { Stop-PSFFunction -Message "You must pipe in an object or specify a Table" return } $objects = @() if ($InputObject) { $objects += $tables.Indexes | Where-Object Name -in $InputObject | Select-Object Name, IndexedColumns } else { $objects += $tables.Indexes | Select-Object Name, IndexedColumns } if ($Index) { $objects = $objects | Where-Object Name -in $Index } $objectCount = $objects.Count $objectStep = 1 if ($objectCount -ge 1) { foreach ($indexObject in $objects) { $task = "Creating index $($objectStep) of $($objectCount)" Write-Progress -ParentId 1 -Activity "Creating..." -Status 'Progress->' -PercentComplete ($objectStep / $objectCount * 100) -CurrentOperation $task -Id 2 $testName = "test If index $($indexObject.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 "IndexColumnTest.template") } catch { Stop-PSFFunction -Message "Could not import test template 'IndexColumnTest.template'" -Target $testName -ErrorRecord $_ } # Get the columns $query = "SELECT col.name AS ColumnName, st.name AS DataType, col.max_length AS MaxLength, col.precision AS [Precision], col.scale AS Scale FROM sys.indexes AS ind INNER JOIN sys.index_columns AS ic ON ind.object_id = ic.object_id AND ind.index_id = ic.index_id INNER JOIN sys.columns AS col ON ic.object_id = col.object_id AND ic.column_id = col.column_id INNER JOIN sys.tables AS t ON ind.object_id = t.object_id LEFT JOIN sys.types AS st ON st.user_type_id = col.user_type_id WHERE ind.name = '$($indexObject.Name)';" try { $columns = Invoke-DbaQuery -SqlInstance $SqlInstance -SqlCredential $SqlCredential -Database $Database -Query $query } catch { Stop-PSFFunction -Message "Could not retrieve columns for [$($indexObject.Schema)].[$($indexObject.Name)]" -Target $indexObject -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("___NAME___", $indexObject.Name) $script = $script.Replace("___CREATOR___", $creator) $script = $script.Replace("___DATE___", $date) $script = $script.Replace("___COLUMNS___", ($columnTextCollection -join ",`n") + ";") # Write the test if ($PSCmdlet.ShouldProcess("$($indexObject.Schema).$($indexObject.Name)", "Writing Index Column Test")) { try { Write-PSFMessage -Message "Creating index column test for index '$($indexObject.Name)'" $script | Out-File -FilePath $fileName [PSCustomObject]@{ TestName = $testName Category = "IndexColumn" Creator = $creator FileName = $fileName } } catch { Stop-PSFFunction -Message "Something went wrong writing the test" -Target $testName -ErrorRecord $_ } } $objectStep++ } } } } |