Tests/TestHelpers/CommonTestHelper.psm1
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Import-Module -Name (Join-Path -Path (Join-Path -Path (Split-Path -Path (Split-Path -Path $PSScriptRoot -Parent) -Parent) ` -ChildPath 'DSCResources') ` -ChildPath 'CommonResourceHelper.psm1') <# .SYNOPSIS Tests that the Get-TargetResource method of a DSC Resource is not null, can be converted to a hashtable, and has the correct properties. Uses Pester. .PARAMETER GetTargetResourceResult The result of the Get-TargetResource method. .PARAMETER GetTargetResourceResultProperties The properties that the result of Get-TargetResource should have. #> function Test-GetTargetResourceResult { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNull()] [Hashtable] $GetTargetResourceResult, [String[]] $GetTargetResourceResultProperties ) foreach ($property in $GetTargetResourceResultProperties) { $GetTargetResourceResult[$property] | Should Not Be $null } } <# .SYNOPSIS Tests if a scope represents the current machine. .PARAMETER Scope The scope to test. #> function Test-IsLocalMachine { [OutputType([Boolean])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [String] $Scope ) Set-StrictMode -Version latest if ($scope -eq '.') { return $true } if ($scope -eq $env:COMPUTERNAME) { return $true } if ($scope -eq 'localhost') { return $true } if ($scope.Contains('.')) { if ($scope -eq '127.0.0.1') { return $true } <# Determine if we have an ip address that matches an ip address on one of the network adapters. NOTE: This is likely overkill; consider removing it. #> $networkAdapters = @(Get-CimInstance Win32_NetworkAdapterConfiguration) foreach ($networkAdapter in $networkAdapters) { if ($null -ne $networkAdapter.IPAddress) { foreach ($address in $networkAdapter.IPAddress) { if ($address -eq $scope) { return $true } } } } } return $false } <# .SYNOPSIS Creates a user account. .DESCRIPTION This function creates a user on the local or remote machine. .PARAMETER Credential The credential containing the username and password to use to create the account. .PARAMETER Description The optional description to set on the user account. .PARAMETER ComputerName The optional name of the computer to update. Omit to create a user on the local machine. .NOTES For remote machines, the currently logged on user must have rights to create a user. #> function New-User { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Credential, [String] $Description, [String] $ComputerName = $env:COMPUTERNAME ) if (Test-IsNanoServer) { New-UserOnNanoServer @PSBoundParameters } else { New-UserOnFullSKU @PSBoundParameters } } <# .SYNOPSIS Creates a user account on a full server. .DESCRIPTION This function creates a user on the local or remote machine running a full server. .PARAMETER Credential The credential containing the username and password to use to create the account. .PARAMETER Description The optional description to set on the user account. .PARAMETER ComputerName The optional name of the computer to update. Omit to create a user on the local machine. .NOTES For remote machines, the currently logged on user must have rights to create a user. #> function New-UserOnFullSKU { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Credential, [String] $Description, [String] $ComputerName = $env:COMPUTERNAME ) Set-StrictMode -Version Latest $userName = $Credential.UserName $password = $Credential.GetNetworkCredential().Password # Remove user if it already exists. Remove-User $userName $ComputerName $adComputerEntry = [ADSI] "WinNT://$ComputerName" $adUserEntry = $adComputerEntry.Create('User', $userName) $null = $adUserEntry.SetPassword($password) if ($PSBoundParameters.ContainsKey('Description')) { $null = $adUserEntry.Put('Description', $Description) } $null = $adUserEntry.SetInfo() } <# .SYNOPSIS Creates a user account on a Nano server. .DESCRIPTION This function creates a user on the local machine running a Nano server. .PARAMETER Credential The credential containing the username and password to use to create the account. .PARAMETER Description The optional description to set on the user account. .PARAMETER ComputerName This parameter should not be used on NanoServer. #> function New-UserOnNanoServer { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Credential, [String] $Description, [String] $ComputerName = $env:COMPUTERNAME ) Set-StrictMode -Version Latest if ($PSBoundParameters.ContainsKey('ComputerName')) { if (-not (Test-IsLocalMachine -Scope $ComputerName)) { throw 'Do not specify the ComputerName arguments when running on NanoServer unless it is a local machine.' } } $userName = $Credential.UserName $securePassword = $Credential.GetNetworkCredential().SecurePassword # Remove user if it already exists. Remove-LocalUser -Name $userName -ErrorAction SilentlyContinue New-LocalUser -Name $userName -Password $securePassword if ($PSBoundParameters.ContainsKey('Description')) { Set-LocalUser -Name $userName -Description $Description } } <# .SYNOPSIS Removes a user account. .DESCRIPTION This function removes a local user from the local or remote machine. .PARAMETER UserName The name of the user to remove. .PARAMETER ComputerName The optional name of the computer to update. Omit to remove the user on the local machine. .NOTES For remote machines, the currently logged on user must have rights to remove a user. #> function Remove-User { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [String] $UserName, [String] $ComputerName = $env:COMPUTERNAME ) if (Test-IsNanoServer) { Remove-UserOnNanoServer @PSBoundParameters } else { Remove-UserOnFullSKU @PSBoundParameters } } <# .SYNOPSIS Removes a user account on a full server. .DESCRIPTION This function removes a local user from the local or remote machine running a full server. .PARAMETER UserName The name of the user to remove. .PARAMETER ComputerName The optional name of the computer to update. Omit to remove the user on the local machine. .NOTES For remote machines, the currently logged on user must have rights to remove a user. #> function Remove-UserOnFullSKU { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [String] $UserName, [String] $ComputerName = $env:COMPUTERNAME ) Set-StrictMode -Version Latest $adComputerEntry = [ADSI] "WinNT://$ComputerName" if ($adComputerEntry.Children | Where-Object Path -like "WinNT://*$ComputerName/$UserName") { $null = $adComputerEntry.Delete('user', $UserName) } } <# .SYNOPSIS Removes a local user account on a Nano server. .DESCRIPTION This function removes a local user from the local machine running a Nano Server. .PARAMETER UserName The name of the user to remove. .PARAMETER ComputerName This parameter should not be used on NanoServer. #> function Remove-UserOnNanoServer { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [String] $UserName, [String] $ComputerName = $env:COMPUTERNAME ) Set-StrictMode -Version Latest if ($PSBoundParameters.ContainsKey('ComputerName')) { if (-not (Test-IsLocalMachine -Scope $ComputerName)) { throw 'Do not specify the ComputerName arguments when running on NanoServer unless it is a local machine.' } } Remove-LocalUser -Name $UserName } <# .SYNOPSIS Determines if a user exists. .DESCRIPTION This function determines if a user exists on a local or remote machine. .PARAMETER UserName The name of the user to test. .PARAMETER ComputerName The optional name of the computer to update. #> function Test-User { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [String] $UserName, [String] $ComputerName = $env:COMPUTERNAME ) if (Test-IsNanoServer) { Test-UserOnNanoServer @PSBoundParameters } else { Test-UserOnFullSKU @PSBoundParameters } } <# .SYNOPSIS Determines if a user exists on a full server. .DESCRIPTION This function determines if a user exists on a local or remote machine running a full server. .PARAMETER UserName The name of the user to test. .PARAMETER ComputerName The optional name of the computer to update. #> function Test-UserOnFullSKU { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [String] $UserName, [String] $ComputerName = $env:COMPUTERNAME ) Set-StrictMode -Version Latest $adComputerEntry = [ADSI] "WinNT://$ComputerName" if ($adComputerEntry.Children | Where-Object Path -like "WinNT://*$ComputerName/$UserName") { return $true } return $false } <# .SYNOPSIS Determines if a user exists on a Nano server. .DESCRIPTION This function determines if a user exists on a local or remote machine running a Nano server. .PARAMETER UserName The name of the user to test. .PARAMETER ComputerName This parameter should not be used on NanoServer. #> function Test-UserOnNanoServer { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [String] $UserName, [String] $ComputerName = $env:COMPUTERNAME ) if ($PSBoundParameters.ContainsKey('ComputerName')) { if (-not (Test-IsLocalMachine -Scope $ComputerName)) { throw 'Do not specify the ComputerName arguments when running on NanoServer unless it is a local machine.' } } # Try to find a user by name. try { $null = Get-LocalUser -Name $UserName -ErrorAction Stop return $true } catch [System.Exception] { if ($_.CategoryInfo.ToString().Contains('UserNotFoundException')) { # A user with the provided name does not exist. return $false } throw $_.Exception } return $false } <# .SYNOPSIS Waits a certain amount of time for a script block to return true. Return $true if completed successfully in the given amount of time, $false otherwise. .PARAMETER ScriptBlock The ScriptBlock to wait for. .PARAMETER TimeoutSeconds The number of seconds to wait for the ScriptBlock to return $true. Default value is 5. #> function Wait-ScriptBlockReturnTrue { [OutputType([Boolean])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [ScriptBlock] $ScriptBlock, [Int] $TimeoutSeconds = 5 ) $startTime = [DateTime]::Now $invokeScriptBlockResult = $false while (-not $invokeScriptBlockResult -and (([DateTime]::Now - $startTime).TotalSeconds -lt $TimeoutSeconds)) { $invokeScriptBlockResult = $ScriptBlock.Invoke() Start-Sleep -Seconds 1 } return $invokeScriptBlockResult } <# .SYNOPSIS Tests if a file is currently locked. .PARAMETER Path The path to the file to test. #> function Test-IsFileLocked { [OutputType([Boolean])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [String] $Path ) if (-not (Test-Path $Path)) { return $false } try { $content = Get-Content -Path $Path return $false } catch { return $true } } <# .SYNOPSIS Tests that calling the Set-TargetResource cmdlet with the WhatIf parameter specified produces output that contains all the given expected output. Uses Pester. .PARAMETER Parameters The parameters to pass to Set-TargetResource. These parameters do not need to contain the WhatIf parameter, but if they do, this function will run Set-TargetResource with WhatIf = $true no matter what is in the Parameters Hashtable. .PARAMETER ExpectedOutput The output expected to be in the output from running WhatIf with the Set-TargetResource cmdlet. If this parameter is empty or null, this cmdlet will check that there was no output from Set-TargetResource with WhatIf specified. #> function Test-SetTargetResourceWithWhatIf { [OutputType([Boolean])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [Hashtable] $Parameters, [String[]] $ExpectedOutput ) $transcriptPath = Join-Path -Path (Get-Location) -ChildPath 'WhatIfTestTranscript.txt' if (Test-Path -Path $transcriptPath) { Wait-ScriptBlockReturnTrue -ScriptBlock {-not (Test-IsFileLocked -Path $transcriptPath)} -TimeoutSeconds 10 Remove-Item -Path $transcriptPath -Force } $Parameters['WhatIf'] = $true try { Wait-ScriptBlockReturnTrue -ScriptBlock {-not (Test-IsFileLocked -Path $transcriptPath)} Start-Transcript -Path $transcriptPath Set-TargetResource @Parameters Stop-Transcript Wait-ScriptBlockReturnTrue -ScriptBlock {-not (Test-IsFileLocked -Path $transcriptPath)} $transcriptContent = Get-Content -Path $transcriptPath -Raw $transcriptContent | Should Not Be $null $regexString = '\*+[^\*]*\*+' # Removing transcript diagnostic logging at top and bottom of file $selectedString = Select-String -InputObject $transcriptContent ` -Pattern $regexString ` -AllMatches foreach ($match in $selectedString.Matches) { $transcriptContent = $transcriptContent.Replace($match.Captures, '') } $transcriptContent = $transcriptContent.Replace("`r`n", '').Replace("`n", '') if ($null -eq $ExpectedOutput -or $ExpectedOutput.Count -eq 0) { [String]::IsNullOrEmpty($transcriptContent) | Should Be $true } else { foreach ($expectedOutputPiece in $ExpectedOutput) { $transcriptContent.Contains($expectedOutputPiece) | Should Be $true } } } finally { if (Test-Path -Path $transcriptPath) { Wait-ScriptBlockReturnTrue -ScriptBlock {-not (Test-IsFileLocked -Path $transcriptPath)} ` -TimeoutSeconds 10 Remove-Item -Path $transcriptPath -Force } } } <# .SYNOPSIS Enters a DSC Resource test environment. .PARAMETER DscResourceModuleName The name of the module that contains the DSC Resource to test. .PARAMETER DscResourceName The name of the DSC resource to test. .PARAMETER TestType Specifies whether the test environment will run a Unit test or an Integration test. #> function Enter-DscResourceTestEnvironment { [OutputType([PSObject])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [String] $DscResourceModuleName, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [String] $DscResourceName, [Parameter(Mandatory = $true)] [ValidateSet('Unit', 'Integration')] [String] $TestType ) $testsFolderPath = Split-Path -Path $PSScriptRoot -Parent $dscResourceTestsPath = Join-Path -Path $testsFolderPath -ChildPath 'DSCResource.Tests' $testHelperFilePath = Join-Path -Path $dscResourceTestsPath -ChildPath 'TestHelper.psm1' if (-not (Test-Path -Path $testHelperFilePath)) { Push-Location $testsFolderPath git clone 'https://github.com/PowerShell/DscResource.Tests.git' --quiet Pop-Location } else { $gitInstalled = $null -ne (Get-Command -Name 'git' -ErrorAction 'SilentlyContinue') if ($gitInstalled) { Push-Location $dscResourceTestsPath git pull origin master --quiet Pop-Location } else { Write-Verbose -Message 'Git not installed. Leaving current DSCResource.Tests as is.' } } Import-Module -Name $testHelperFilePath return Initialize-TestEnvironment ` -DSCModuleName $DscResourceModuleName ` -DSCResourceName $DscResourceName ` -TestType $TestType } <# .SYNOPSIS Exits the specified DSC Resource test environment. .PARAMETER TestEnvironment The test environment to exit. #> function Exit-DscResourceTestEnvironment { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [PSObject] $TestEnvironment ) $testsFolderPath = Split-Path -Path $PSScriptRoot -Parent $dscResourceTestsPath = Join-Path -Path $testsFolderPath -ChildPath 'DSCResource.Tests' $testHelperFilePath = Join-Path -Path $dscResourceTestsPath -ChildPath 'TestHelper.psm1' Import-Module -Name $testHelperFilePath Restore-TestEnvironment -TestEnvironment $TestEnvironment } Export-ModuleMember -Function ` Test-GetTargetResourceResult, ` New-User, ` Remove-User, ` Test-User, ` Wait-ScriptBlockReturnTrue, ` Test-IsFileLocked, ` Test-SetTargetResourceWithWhatIf, ` Enter-DscResourceTestEnvironment, ` Exit-DscResourceTestEnvironment |