Tests/Unit/MSFT_xHostsFile.Tests.ps1
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$script:DSCModuleName = 'xNetworking' $script:DSCResourceName = 'MSFT_xHostsFile' #region HEADER # Unit Test Template Version: 1.1.0 [String] $script:moduleRoot = Split-Path -Parent (Split-Path -Parent $PSScriptRoot) if ( (-not (Test-Path -Path (Join-Path -Path $script:moduleRoot -ChildPath 'DSCResource.Tests'))) -or ` (-not (Test-Path -Path (Join-Path -Path $script:moduleRoot -ChildPath 'DSCResource.Tests\TestHelper.psm1'))) ) { & git @('clone','https://github.com/PowerShell/DscResource.Tests.git',(Join-Path -Path $script:moduleRoot -ChildPath '\DSCResource.Tests\')) } Import-Module (Join-Path -Path $script:moduleRoot -ChildPath 'DSCResource.Tests\TestHelper.psm1') -Force $TestEnvironment = Initialize-TestEnvironment ` -DSCModuleName $script:DSCModuleName ` -DSCResourceName $script:DSCResourceName ` -TestType Unit #endregion HEADER # Begin Testing try { #region Pester Tests InModuleScope $script:DSCResourceName { Describe 'MSFT_xHostsFile' { Mock Add-Content {} Mock Set-Content {} Context "A host entry doesn't exist, and should" { $testParams = @{ HostName = "www.contoso.com" IPAddress = "192.168.0.156" } Mock Get-Content { return @( "# A mocked example of a host file - this line is a comment", "", "127.0.0.1 localhost", "127.0.0.1 www.anotherexample.com", "" ) } It "should return absent from the get method" { (Get-TargetResource @testParams).Ensure | Should Be "Absent" } It "should return false from the test method" { Test-TargetResource @testParams | Should Be $false } It "should create the entry in the set method" { Set-TargetResource @testParams Assert-MockCalled Add-Content } } Context "A host entry exists but has the wrong IP address" { $testParams = @{ HostName = "www.contoso.com" IPAddress = "192.168.0.156" } Mock Get-Content { return @( "# A mocked example of a host file - this line is a comment", "", "127.0.0.1 localhost", "127.0.0.1 www.anotherexample.com", "127.0.0.1 $($testParams.HostName)", "" ) } It "should return present from the get method" { (Get-TargetResource @testParams).Ensure | Should Be "Present" } It "should return false from the test method" { Test-TargetResource @testParams | Should Be $false } It "should update the entry in the set method" { Set-TargetResource @testParams Assert-MockCalled Set-Content } } Context "A host entry exists with the correct IP address" { $testParams = @{ HostName = "www.contoso.com" IPAddress = "192.168.0.156" } Mock Get-Content { return @( "# A mocked example of a host file - this line is a comment", "", "127.0.0.1 localhost", "127.0.0.1 www.anotherexample.com", "$($testParams.IPAddress) $($testParams.HostName)", "" ) } It "should return present from the get method" { (Get-TargetResource @testParams).Ensure | Should Be "Present" } It "should return true from the test method" { Test-TargetResource @testParams | Should Be $true } } Context "A host entry exists but it shouldn't" { $testParams = @{ HostName = "www.contoso.com" Ensure = "Absent" } Mock Get-Content { return @( "# A mocked example of a host file - this line is a comment", "", "127.0.0.1 localhost", "127.0.0.1 www.anotherexample.com", "127.0.0.1 $($testParams.HostName)", "" ) } It "should return present from the get method" { (Get-TargetResource @testParams).Ensure | Should Be "Present" } It "should return false from the test method" { Test-TargetResource @testParams | Should Be $false } It "should remove the entry in the set method" { Set-TargetResource @testParams Assert-MockCalled Set-Content } } Context "A host entry doesn't it exist and shouldn't" { $testParams = @{ HostName = "www.contoso.com" Ensure = "Absent" } Mock Get-Content { return @( "# A mocked example of a host file - this line is a comment", "", "127.0.0.1 localhost", "127.0.0.1 www.anotherexample.com", "" ) } It "should return absent from the get method" { (Get-TargetResource @testParams).Ensure | Should Be "Absent" } It "should return true from the test method" { Test-TargetResource @testParams | Should Be $true } } Context "A host entry exists and is correct, but it listed with multiple entries on one line" { $testParams = @{ HostName = "www.contoso.com" IPAddress = "192.168.0.156" } Mock Get-Content { return @( "# A mocked example of a host file - this line is a comment", "", "127.0.0.1 localhost", "127.0.0.1 www.anotherexample.com", "$($testParams.IPAddress) demo.contoso.com $($testParams.HostName) more.examples.com", "" ) } It "should return present from the get method" { (Get-TargetResource @testParams).Ensure | Should Be "Present" } It "should return true from the test method" { Test-TargetResource @testParams | Should Be $true } } Context "A host entry exists and is not correct, but it listed with multiple entries on one line" { $testParams = @{ HostName = "www.contoso.com" IPAddress = "192.168.0.156" } Mock Get-Content { return @( "# A mocked example of a host file - this line is a comment", "", "127.0.0.1 localhost", "127.0.0.1 www.anotherexample.com", "127.0.0.1 demo.contoso.com $($testParams.HostName) more.examples.com", "" ) } It "should return present from the get method" { (Get-TargetResource @testParams).Ensure | Should Be "Present" } It "should return false from the test method" { Test-TargetResource @testParams | Should Be $false } It "should update the entry in the set method" { Set-TargetResource @testParams Assert-MockCalled Set-Content } } Context "Invalid parameters will throw meaningful errors" { $testParams = @{ HostName = "www.contoso.com" } Mock Get-Content { return @( "# A mocked example of a host file - this line is a comment", "", "127.0.0.1 localhost", "127.0.0.1 www.anotherexample.com", "" ) } It "should throw an error when IP Address isn't provide and ensure is present" { { Set-TargetResource @testParams } | Should throw $LocalizedData.UnableToEnsureWithoutIP } } } } #end InModuleScope $DSCResourceName #endregion } finally { #region FOOTER Restore-TestEnvironment -TestEnvironment $TestEnvironment #endregion } |