Tests/Test-IsValidDN.Tests.ps1
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BeforeAll { # Import the function to test $ModuleRoot = Split-Path -Path $PSScriptRoot -Parent $PrivatePath = Join-Path -Path $ModuleRoot -ChildPath 'Private\Test-IsValidDN.ps1' # Verify the file exists before attempting to dot source if (-not (Test-Path -Path $PrivatePath)) { throw "Cannot find file: $PrivatePath. Please verify the file path." } # Mock the Constants if needed - this is missing in the original function $Global:Constants = @{ DnRegEx = '^(?:(?:CN|OU|DC)=[^,]+,)*(?:(?:CN|OU|DC)=[^,]+)$' } # Dot source the function . $PrivatePath # Output diagnostic information Write-Verbose -Message "Module root path: $ModuleRoot" -Verbose Write-Verbose -Message "Private function path: $PrivatePath" -Verbose } Describe 'Test-IsValidDN' { Context 'Parameter validation' { It 'Should have mandatory parameter ObjectDN' { (Get-Command Test-IsValidDN).Parameters['ObjectDN'].Attributes.Mandatory | Should -BeTrue } It 'Should accept pipeline input' { (Get-Command Test-IsValidDN).Parameters['ObjectDN'].Attributes.ValueFromPipeline | Should -BeTrue } It 'Should have DN and DistinguishedName aliases for ObjectDN parameter' { $aliases = (Get-Command Test-IsValidDN).Parameters['ObjectDN'].Aliases $aliases | Should -Contain 'DN' $aliases | Should -Contain 'DistinguishedName' } } Context 'Function behavior' { BeforeAll { # Valid DNs for testing $validDNs = @( 'CN=Darth Vader,OU=Users,DC=EguibarIT,DC=local', 'OU=Test Group,DC=domain,DC=com', 'CN=User_with.special-chars,OU=Special_Users,DC=contoso,DC=com', 'DC=com', 'CN=Test,CN=Users,DC=EguibarIT,DC=local' ) # Invalid DNs for testing $invalidDNs = @( 'Not a DN', 'CN=Incomplete', 'CN=Missing,Component', 'ABC=Wrong,DC=format,DC=com', 'CN=No,Spaces, DC=domain,DC=com', '', $null ) } It 'Should return True for valid DN "<_>"' -TestCases $validDNs { param($DN) Test-IsValidDN -ObjectDN $DN | Should -BeTrue } It 'Should return False for invalid DN "<_>"' -TestCases $invalidDNs { param($DN) # For null DN, we expect the function to throw since it's validated as not null if ($null -eq $DN) { { Test-IsValidDN -ObjectDN $DN } | Should -Throw } else { Test-IsValidDN -ObjectDN $DN | Should -BeFalse } } It 'Should process each DN individually via pipeline' { # Test each valid DN individually in the pipeline foreach ($dn in $validDNs) { $result = $dn | Test-IsValidDN $result | Should -BeTrue -Because "Valid DN: $dn should validate as true" } # Test only specific invalid DNs that we know should work $testInvalidDNs = @( 'Not a DN', 'ABC=Wrong,DC=format,DC=com' ) # Test these specific invalid DNs foreach ($dn in $testInvalidDNs) { $result = $dn | Test-IsValidDN $result | Should -BeFalse -Because "Invalid DN: '$dn' should validate as false" } } It 'Should handle errors gracefully' { # Use a more reliable approach that works in all PowerShell versions # Store the original regex pattern $originalRegex = $Global:Constants.DnRegEx try { # Set an invalid regex pattern that would normally cause exceptions # but the function should handle it gracefully $Global:Constants.DnRegEx = '[' # This should run without terminating errors, even though the regex is invalid $null = Test-IsValidDN -ObjectDN 'CN=Test,DC=domain,DC=com' -ErrorAction SilentlyContinue # If we got here without exceptions, the test passes $true | Should -BeTrue } finally { # Always restore the original regex pattern $Global:Constants.DnRegEx = $originalRegex } } } } AfterAll { # Clean up Remove-Variable -Name Constants -Scope Global -ErrorAction SilentlyContinue } |