xHyper-V

3.12.0.0

Tests/Unit/MSFT_xVMSwitch_EnableEmbeddedTeaming.Tests.ps1

#region HEADER

# Unit Test Template Version: 1.2.0
$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 -Name (Join-Path -Path $script:moduleRoot -ChildPath (Join-Path -Path 'DSCResource.Tests' -ChildPath 'TestHelper.psm1')) -Force

$TestEnvironment = Initialize-TestEnvironment `
    -DSCModuleName 'xHyper-V' `
    -DSCResourceName 'MSFT_xVMSwitch' `
    -TestType Unit

#endregion HEADER

function Invoke-TestSetup
{

}

function Invoke-TestCleanup
{
    Restore-TestEnvironment -TestEnvironment $TestEnvironment
}

# Begin Testing
try
{
    Invoke-TestSetup

    InModuleScope 'MSFT_xVMSwitch' {
        # Function to create a exception object for testing output exceptions
        function Get-InvalidArgumentError
        {
            [CmdletBinding()]
            param
            (
                [Parameter(Mandatory = $true)]
                [ValidateNotNullOrEmpty()]
                [System.String]
                $ErrorId,

                [Parameter(Mandatory = $true)]
                [ValidateNotNullOrEmpty()]
                [System.String]
                $ErrorMessage
            )

            $exception = New-Object -TypeName System.ArgumentException `
                -ArgumentList $ErrorMessage
            $errorCategory = [System.Management.Automation.ErrorCategory]::InvalidArgument
            $errorRecord = New-Object -TypeName System.Management.Automation.ErrorRecord `
                -ArgumentList $exception, $ErrorId, $errorCategory, $null
            return $errorRecord
        } # end function Get-InvalidArgumentError

        # A helper function to mock a VMSwitch
        function New-MockedVMSwitch
        {
            param (
                [Parameter(Mandatory = $true)]
                [string]
                $Name,

                [Parameter(Mandatory = $true)]
                [ValidateSet('Default', 'Weight', 'Absolute', 'None', 'NA')]
                [string]
                $BandwidthReservationMode,

                [parameter()]
                [ValidateSet('Dynamic','HyperVPort')]
                [String]
                $LoadBalancingAlgorithm,

                [Parameter()]
                [bool]
                $AllowManagementOS = $false
            )

            $mockedVMSwitch = @{
                Name = $Name
                SwitchType = 'External'
                AllowManagementOS = $AllowManagementOS
                NetAdapterInterfaceDescription = 'Microsoft Network Adapter Multiplexor Driver'
            }

            if ($BandwidthReservationMode -ne 'NA')
            {
                $mockedVMSwitch['BandwidthReservationMode'] = $BandwidthReservationMode
            }

            if($PSBoundParameters.ContainsKey('LoadBalancingAlgorithm'))
            {
                $mockedVMSwitch['LoadBalancingAlgorithm'] = $LoadBalancingAlgorithm
            }

            return [PsObject]$mockedVMSwitch
        }

        Describe "MSFT_xVMSwitch" {
            # Create empty functions to be able to mock the missing Hyper-V cmdlet
            function Get-VMSwitch
            {

            }

            function New-VMSwitch
            {

            }

            function Set-VMSwitch
            {

            }

            function Remove-VMSwitch
            {

            }

            function Get-VMSwitchTeam
            {

            }

            function Set-VMSwitchTeam
            {

            }

            <#
                Mocks Get-VMSwitch and will return $global:mockedVMSwitch which is
                a variable that is created during most It statements to mock a VMSwitch
            #>
            Mock -CommandName Get-VMSwitch -MockWith {
                param
                (
                    [string]
                    $Name,

                    [string]
                    $SwitchType,

                    [string]
                    $ErrorAction
                )

                if ($ErrorAction -eq 'Stop' -and $global:mockedVMSwitch -eq $null)
                {
                    throw [System.Management.Automation.ActionPreferenceStopException]'No switch can be found by given criteria.'
                }

                return $global:mockedVMSwitch
            }

            <#
                Mocks New-VMSwitch and will assign a mocked switch to $global:mockedVMSwitch. This returns $global:mockedVMSwitch
                which is a variable that is created during most It statements to mock a VMSwitch
            #>
            Mock -CommandName New-VMSwitch -MockWith {
                param
                (
                    [string]
                    $Name,

                    [string[]]
                    $NetAdapterName,

                    [string]
                    $MinimumBandwidthMode = 'NA',

                    [bool]
                    $EnableEmbeddedTeaming,

                    [bool]
                    $AllowManagementOS
                )

                $global:mockedVMSwitch = New-MockedVMSwitch -Name $Name -BandwidthReservationMode $MinimumBandwidthMode -AllowManagementOS $AllowManagementOS
                #is SET is enabled mok a VMSwitchTeam
                if($EnableEmbeddedTeaming){
                    $global:mockedVMSwitchTeam = [PSCustomObject]@{
                        Name = "TestSwitch"
                        Id = [Guid]::NewGuid()
                        TeamingMode = 'SwitchIndependent'
                        LoadBalancingAlgorithm = 'Dynamic'
                    }
                }
                return $global:mockedVMSwitch
            }

            Mock -CommandName Get-OSVersion -MockWith {
                return @{
                    Major = 10
                }
            }

            <#
                Mocks Set-VMSwitch and will modify $global:mockedVMSwitch which is
                a variable that is created during most It statements to mock a VMSwitch
            #>
            Mock -CommandName Set-VMSwitch -MockWith {
                param
                (
                    [bool]
                    $AllowManagementOS
                )

                if ($AllowManagementOS)
                {
                    $global:mockedVMSwitch['AllowManagementOS'] = $AllowManagementOS
                }
            }

            <#
                Mocks Remove-VMSwitch and will remove the variable $global:mockedVMSwitch which is
                a variable that is created during most It statements to mock a VMSwitch
            #>
            Mock -CommandName Remove-VMSwitch -MockWith {
                $global:mockedVMSwitch = $null
            }

            <#
                Mocks Get-VMSwitchTeam and will return a moked VMSwitchTeam
            #>
            Mock -CommandName Get-VMSwitchTeam -MockWith {
                return $global:mockedVMSwitchTeam
            }

            <#
                Mocks Set-VMSwitchTeam and will return a moked VMSwitchTeam
            #>
            Mock -CommandName Set-VMSwitchTeam -MockWith {
                param
                (
                    [parameter(Mandatory=$true)]
                    [ValidateSet('Dynamic','HyperVPort')]
                    [String]
                    $LoadBalancingAlgorithm,

                    [String]
                    $Name
                )

                $global:mockedVMSwitchTeam.LoadBalancingAlgorithm = $LoadBalancingAlgorithm
            }

            # Mocks Get-NetAdapter which returns a simplified network adapter
            Mock -CommandName Get-NetAdapter -MockWith {
                return @(
                    [PSCustomObject]@{
                        Name = 'NIC1'
                        InterfaceDescription = 'Microsoft Network Adapter Multiplexor Driver #1'
                    }
                    [PSCustomObject]@{
                        Name = 'NIC2'
                        InterfaceDescription = 'Microsoft Network Adapter Multiplexor Driver #2'
                    }
                )
            }

            # Mocks "Get-Module -Name Hyper-V" so that the DSC resource thinks the Hyper-V module is on the test system
            Mock -CommandName Get-Module -ParameterFilter { ($Name -eq 'Hyper-V') -and ($ListAvailable -eq $true) } -MockWith {
                return $true
            }

            Context "A virtual switch with embedded teaming does not exist but should" {
                $global:mockedVMSwitch = $null

                $testParams = @{
                    Name = "TestSwitch"
                    Type = "External"
                    NetAdapterName = @("NIC1", "NIC2")
                    AllowManagementOS = $true
                    EnableEmbeddedTeaming = $true
                    BandwidthReservationMode = "NA"
                    Ensure = "Present"
                }

                It "Should return absent in the get method" {
                    (Get-TargetResource -Name $testParams.Name -Type $testParams.Type).Ensure | Should Be "Absent"
                }

                It "Should return false in the test method" {
                    Test-TargetResource @testParams | Should Be $false
                }

                It "Should run the set method without exceptions" {
                    Set-TargetResource @testParams
                    Assert-MockCalled -CommandName "New-VMSwitch" -Times 1
                }
            }

            Context "A virtual switch with embedded teaming exists and should" {
                $global:mockedVMSwitch = @{
                    Name = "TestSwitch"
                    SwitchType = "External"
                    AllowManagementOS = $true
                    EmbeddedTeamingEnabled = $true
                    Id = [Guid]::NewGuid()
                    NetAdapterInterfaceDescriptions = @("Microsoft Network Adapter Multiplexor Driver #1", "Microsoft Network Adapter Multiplexor Driver #2")
                }

                $testParams = @{
                    Name = "TestSwitch"
                    Type = "External"
                    NetAdapterName = @("NIC1", "NIC2")
                    AllowManagementOS = $true
                    EnableEmbeddedTeaming = $true
                    BandwidthReservationMode = "NA"
                    Ensure = "Present"
                }

                It "Should return present in the get method" {
                    (Get-TargetResource -Name $testParams.Name -Type $testParams.Type).Ensure | Should Be "Present"
                }

                It "Should return true in the test method" {
                    Test-TargetResource @testParams | Should Be $true
                }
            }

            Context "A virtual switch with embedded teaming exists but does not refer to the correct adapters" {
                $global:mockedVMSwitch = @{
                    Name = "TestSwitch"
                    SwitchType = "External"
                    AllowManagementOS = $true
                    EmbeddedTeamingEnabled = $true
                    Id = [Guid]::NewGuid()
                    NetAdapterInterfaceDescriptions = @("Wrong adapter", "Microsoft Network Adapter Multiplexor Driver #2")
                }

                Mock -CommandName Get-NetAdapter -MockWith {
                    return @(
                        [PSCustomObject]@{
                            Name = 'WrongNic'
                            InterfaceDescription = 'Wrong adapter'
                        }
                        [PSCustomObject]@{
                            Name = 'NIC2'
                            InterfaceDescription = 'Microsoft Network Adapter Multiplexor Driver #2'
                        }
                    )
                }

                $testParams = @{
                    Name = "TestSwitch"
                    Type = "External"
                    NetAdapterName = @("NIC1", "NIC2")
                    AllowManagementOS = $true
                    EnableEmbeddedTeaming = $true
                    BandwidthReservationMode = "NA"
                    Ensure = "Present"
                }

                It "Should return present in the get method" {
                    (Get-TargetResource -Name $testParams.Name -Type $testParams.Type).Ensure | Should Be "Present"
                }

                It "Should return false in the test method" {
                    Test-TargetResource @testParams | Should Be $false
                }

                It "Should run the set method without exceptions" {
                    Set-TargetResource @testParams
                    Assert-MockCalled -CommandName "Remove-VMSwitch" -Times 1
                    Assert-MockCalled -CommandName "New-VMSwitch" -Times 1
                }
            }

            Context "A virtual switch with embedded teaming exists but does not use the correct LB algorithm" {
                $global:mockedVMSwitch = @{
                    Name = "TestSwitch"
                    SwitchType = "External"
                    AllowManagementOS = $true
                    EmbeddedTeamingEnabled = $true
                    LoadBalancingAlgorithm = 'Dynamic'
                    Id = [Guid]::NewGuid()
                    NetAdapterInterfaceDescriptions = @("Microsoft Network Adapter Multiplexor Driver #1", "Microsoft Network Adapter Multiplexor Driver #2")
                }

                Mock -CommandName Get-NetAdapter -MockWith {
                    return @(
                        [PSCustomObject]@{
                            Name = 'NIC01'
                            InterfaceDescription = "Microsoft Network Adapter Multiplexor Driver #1"
                        }
                        [PSCustomObject]@{
                            Name = 'NIC2'
                            InterfaceDescription = 'Microsoft Network Adapter Multiplexor Driver #2'
                        }
                    )
                }

                $testParams = @{
                    Name = "TestSwitch"
                    Type = "External"
                    NetAdapterName = @("NIC1", "NIC2")
                    AllowManagementOS = $true
                    EnableEmbeddedTeaming = $true
                    LoadBalancingAlgorithm = 'HyperVPort'
                    Ensure = "Present"
                }

                It "Should return present in the get method" {
                    (Get-TargetResource -Name $testParams.Name -Type $testParams.Type).Ensure | Should Be "Present"
                }

                It "Should return false in the test method" {
                    Test-TargetResource @testParams | Should Be $false
                }

                It "Should run the set method without exceptions" {
                    Set-TargetResource @testParams
                    Assert-MockCalled -CommandName "Remove-VMSwitch" -Times 1
                    Assert-MockCalled -CommandName "New-VMSwitch" -Times 1
                }
            }

            Context "A virtual switch without embedded teaming exists but should use embedded teaming" {
                $global:mockedVMSwitch = @{
                    Name = "TestSwitch"
                    SwitchType = "External"
                    AllowManagementOS = $true
                    EmbeddedTeamingEnabled = $false
                    Id = [Guid]::NewGuid()
                    NetAdapterInterfaceDescription = "Microsoft Network Adapter Multiplexor Driver #1"
                }

                $testParams = @{
                    Name = "TestSwitch"
                    Type = "External"
                    NetAdapterName = @("NIC1", "NIC2")
                    AllowManagementOS = $true
                    EnableEmbeddedTeaming = $true
                    BandwidthReservationMode = "NA"
                    Ensure = "Present"
                }

                It "Should return present in the get method" {
                    (Get-TargetResource -Name $testParams.Name -Type $testParams.Type).Ensure | Should Be "Present"
                }

                It "Should return false in the test method" {
                    Test-TargetResource @testParams | Should Be $false
                }

                It "Should run the set method without exceptions" {
                    Set-TargetResource @testParams
                    Assert-MockCalled -CommandName "Remove-VMSwitch" -Times 1
                    Assert-MockCalled -CommandName "New-VMSwitch" -Times 1
                }
            }

            Context "A virtual switch with embedded teaming exists but shouldn't" {
                $global:mockedVMSwitch = @{
                    Name = "TestSwitch"
                    SwitchType = "External"
                    AllowManagementOS = $true
                    EmbeddedTeamingEnabled = $true
                    Id = [Guid]::NewGuid()
                    NetAdapterInterfaceDescriptions = @("Microsoft Network Adapter Multiplexor Driver #1", "Microsoft Network Adapter Multiplexor Driver #2")
                }

                $testParams = @{
                    Name = "TestSwitch"
                    Type = "Internal"
                    Ensure = "Absent"
                }

                It "Should return present in the get method" {
                    (Get-TargetResource -Name $testParams.Name -Type $testParams.Type).Ensure | Should Be "Present"
                }

                It "Should return false in the test method" {
                    Test-TargetResource @testParams | Should Be $false
                }

                It "Should run the set method without exceptions" {
                    Set-TargetResource @testParams
                    Assert-MockCalled -CommandName "Remove-VMSwitch" -Times 1
                }
            }

            Context "A virtual switch with embedded teaming does not exist and shouldn't" {
                $global:mockedVMSwitch = $null

                $testParams = @{
                    Name = "TestSwitch"
                    Type = "Internal"
                    Ensure = "Absent"
                }

                It "Should return absent in the get method" {
                    (Get-TargetResource -Name $testParams.Name -Type $testParams.Type).Ensure | Should Be "Absent"
                }

                It "Should return true in the test method" {
                    Test-TargetResource @testParams | Should Be $true
                }
            }

            Context "A server is not running Server 2016 and attempts to use embedded teaming" {
                $global:mockedVMSwitch = $null

                $testParams = @{
                    Name = "TestSwitch"
                    Type = "External"
                    NetAdapterName = @("NIC1", "NIC2")
                    AllowManagementOS = $true
                    EnableEmbeddedTeaming = $true
                    BandwidthReservationMode = "NA"
                    Ensure = "Present"
                }

                Mock -CommandName Get-OSVersion -MockWith {
                    return [Version]::Parse('6.3.9600')
                }

                It "Should return absent in the get method" {
                    (Get-TargetResource -Name $testParams.Name -Type $testParams.Type).Ensure | Should Be "Absent"
                }

                It "Should throw an error in the test method" {
                    $errorRecord = Get-InvalidArgumentError `
                        -ErrorId 'SETServer2016Error' `
                        -ErrorMessage $LocalizedData.SETServer2016Error

                    {Test-TargetResource @testParams} | Should Throw $errorRecord
                }

                It "Should throw an error in the set method" {
                    $errorRecord = Get-InvalidArgumentError `
                        -ErrorId 'SETServer2016Error' `
                        -ErrorMessage $LocalizedData.SETServer2016Error

                    {Set-TargetResource @testParams} | Should Throw $errorRecord
                }
            }
        }
    }
}
finally {
    Invoke-TestCleanup
}