Tests/Unit/MSFT_xDnsServerForwarder.Tests.ps1
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$Global:DSCModuleName = 'xDnsServer' $Global:DSCResourceName = 'MSFT_xDnsServerForwarder' #region HEADER [String] $moduleRoot = Split-Path -Parent (Split-Path -Parent (Split-Path -Parent $Script:MyInvocation.MyCommand.Path)) if ( (-not (Test-Path -Path (Join-Path -Path $moduleRoot -ChildPath 'DSCResource.Tests'))) -or ` (-not (Test-Path -Path (Join-Path -Path $moduleRoot -ChildPath 'DSCResource.Tests\TestHelper.psm1'))) ) { & git @('clone','https://github.com/PowerShell/DscResource.Tests.git',(Join-Path -Path $moduleRoot -ChildPath '\DSCResource.Tests\')) } else { & git @('-C',(Join-Path -Path $moduleRoot -ChildPath '\DSCResource.Tests\'),'pull') } Import-Module (Join-Path -Path $moduleRoot -ChildPath 'DSCResource.Tests\TestHelper.psm1') -Force $TestEnvironment = Initialize-TestEnvironment ` -DSCModuleName $Global:DSCModuleName ` -DSCResourceName $Global:DSCResourceName ` -TestType Unit #endregion # Begin Testing try { #region Pester Tests InModuleScope $Global:DSCResourceName { #region Pester Test Initialization function Get-DnsServerForwarder {} function Set-DnsServerForwarder {} $forwarders = '192.168.0.1','192.168.0.2' $UseRootHint = $true $testParams = @{ IsSingleInstance = 'Yes' IPAddresses = $forwarders UseRootHint = $UseRootHint } $fakeDNSForwarder = @{ IPAddress = $forwarders UseRootHint = $UseRootHint } #endregion #region Function Get-TargetResource Describe "$($Global:DSCResourceName)\Get-TargetResource" { It 'Returns a "System.Collections.Hashtable" object type' { Mock -CommandName Get-DnsServerForwarder -MockWith {return $fakeDNSForwarder} $targetResource = Get-TargetResource -IsSingleInstance $testParams.IsSingleInstance $targetResource -is [System.Collections.Hashtable] | Should Be $true } It "Returns IPAddresses = $($testParams.IPAddresses) and UseRootHint = $($testParams.UseRootHint) when forwarders exist" { Mock -CommandName Get-DnsServerForwarder -MockWith {return $fakeDNSForwarder} $targetResource = Get-TargetResource -IsSingleInstance $testParams.IsSingleInstance $targetResource.IPAddresses | Should Be $testParams.IPAddresses $targetResource.UseRootHint | Should Be $testParams.UseRootHint } It "Returns an empty IPAddresses and UseRootHint at True when forwarders don't exist" { Mock -CommandName Get-DnsServerForwarder -MockWith {return @{IPAddress = @(); UseRootHint = $true}} $targetResource = Get-TargetResource -IsSingleInstance $testParams.IsSingleInstance $targetResource.IPAddresses | Should Be $null $targetResource.UseRootHint | Should Be $true } } #endregion #region Function Test-TargetResource Describe "$($Global:DSCResourceName)\Test-TargetResource" { It 'Returns a "System.Boolean" object type' { Mock -CommandName Get-DnsServerForwarder -MockWith {return $fakeDNSForwarder} $targetResource = Test-TargetResource @testParams $targetResource -is [System.Boolean] | Should Be $true } It 'Passes when forwarders match' { Mock -CommandName Get-DnsServerForwarder -MockWith {return $fakeDNSForwarder} Test-TargetResource @testParams | Should Be $true } It "Fails when forwarders don't match" { Mock -CommandName Get-DnsServerForwarder -MockWith {return @{IPAddress = @(); UseRootHint = $true}} Test-TargetResource @testParams | Should Be $false } It "Fails when UseRootHint don't match" { Mock -CommandName Get-DnsServerForwarder -MockWith {return @{IPAddress = $fakeDNSForwarder.IpAddress; UseRootHint = $false}} Test-TargetResource @testParams | Should Be $false } } #endregion #region Function Set-TargetResource Describe "$($Global:DSCResourceName)\Set-TargetResource" { It "Calls Set-DnsServerForwarder once" { Mock -CommandName Set-DnsServerForwarder -MockWith {} Set-TargetResource @testParams Assert-MockCalled -CommandName Set-DnsServerForwarder -Times 1 -Exactly -Scope It } } } #end InModuleScope } finally { #region FOOTER Restore-TestEnvironment -TestEnvironment $TestEnvironment #endregion } |