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# Licensed under the MIT License.

## ----------

## Test Note:

## ----------

## Since these tests change session and system state (constrained language and system lockdown)

## they will all use try/finally blocks instead of Pester AfterEach/AfterAll to ensure session

## and system state is restored.

## Pester AfterEach, AfterAll is not reliable when the session is constrained language or locked down.

function Get-RandomFileName

{

[System.IO.Path]::GetFileNameWithoutExtension([IO.Path]::GetRandomFileName())

}

if ($IsWindows)

{

$code = @'

#region Using directives

using System;

using System.Management.Automation;

#endregion

/// <summary>Adds a new type to the Application Domain</summary>

[Cmdlet("Invoke", "LanguageModeTestingSupportCmdlet")]

public sealed class InvokeLanguageModeTestingSupportCmdlet : PSCmdlet

{

[Parameter()]

public SwitchParameter EnableFullLanguageMode { get; set; }

[Parameter()]

public SwitchParameter SetLockdownMode { get; set; }

[Parameter()]

public SwitchParameter RevertLockdownMode { get; set; }

protected override void BeginProcessing()

{

if (EnableFullLanguageMode)

{

SessionState.LanguageMode = PSLanguageMode.FullLanguage;

}

if (SetLockdownMode)

{

Environment.SetEnvironmentVariable("__PSLockdownPolicy", "0x80000007", EnvironmentVariableTarget.Machine);

}

if (RevertLockdownMode)

{

Environment.SetEnvironmentVariable("__PSLockdownPolicy", null, EnvironmentVariableTarget.Machine);

}

if (-not (Get-Command Invoke-LanguageModeTestingSupportCmdlet -ErrorAction Ignore))

{

$moduleName = Get-RandomFileName

$moduleDirectory = join-path $TestDrive\Modules $moduleName

if (-not (Test-Path $moduleDirectory))

{

$null = New-Item -ItemType Directory $moduleDirectory -Force

}

try

{

Add-Type -TypeDefinition $code -OutputAssembly $moduleDirectory\TestCmdletForConstrainedLanguage.dll -ErrorAction Ignore

} catch {}

Import-Module -Name $moduleDirectory\TestCmdletForConstrainedLanguage.dll

}

try

{

$defaultParamValues = $PSDefaultParameterValues.Clone()

$PSDefaultParameterValues["it:Skip"] = !$IsWindows

Describe "ThreadJob Constrained Language Tests" -Tags 'Feature','RequireAdminOnWindows' {

BeforeAll {

$sb = { $ExecutionContext.SessionState.LanguageMode }

$scriptTrustedFilePath = Join-Path $TestDrive "ThJobTrusted_System32.ps1"

Write-Output $ExecutionContext.SessionState.LanguageMode

'@ | Out-File -FilePath $scriptTrustedFilePath

$scriptUntrustedFilePath = Join-Path $TestDrive "ThJobUntrusted.ps1"

Write-Output $ExecutionContext.SessionState.LanguageMode

'@ | Out-File -FilePath $scriptUntrustedFilePath

}

AfterAll {

Get-Job | Where-Object PSJobTypeName -eq "ThreadJob" | Remove-Job -Force

}

It "ThreadJob script must run in ConstrainedLanguage mode with system lock down" {

try

{

$ExecutionContext.SessionState.LanguageMode = "ConstrainedLanguage"

Invoke-LanguageModeTestingSupportCmdlet -SetLockdownMode

$results = Start-ThreadJob -ScriptBlock { $ExecutionContext.SessionState.LanguageMode } | Wait-Job | Receive-Job

}

finally

{

Invoke-LanguageModeTestingSupportCmdlet -RevertLockdownMode -EnableFullLanguageMode

}

$results | Should -BeExactly "ConstrainedLanguage"

}

It "ThreadJob script block using variable must run in ConstrainedLanguage mode with system lock down" {

try

{

$ExecutionContext.SessionState.LanguageMode = "ConstrainedLanguage"

Invoke-LanguageModeTestingSupportCmdlet -SetLockdownMode

$results = Start-ThreadJob -ScriptBlock { & $using:sb } | Wait-Job | Receive-Job

}

finally

{

Invoke-LanguageModeTestingSupportCmdlet -RevertLockdownMode -EnableFullLanguageMode

}

$results | Should -BeExactly "ConstrainedLanguage"

}

It "ThreadJob script block argument variable must run in ConstrainedLanguage mode with system lock down" {

try

{

$ExecutionContext.SessionState.LanguageMode = "ConstrainedLanguage"

Invoke-LanguageModeTestingSupportCmdlet -SetLockdownMode

$results = Start-ThreadJob -ScriptBlock { param ($sb) & $sb } -ArgumentList $sb | Wait-Job | Receive-Job

}

finally

{

Invoke-LanguageModeTestingSupportCmdlet -RevertLockdownMode -EnableFullLanguageMode

}

$results | Should -BeExactly "ConstrainedLanguage"

}

It "ThreadJob script block piped variable must run in ConstrainedLanguage mode with system lock down" {

try

{

$ExecutionContext.SessionState.LanguageMode = "ConstrainedLanguage"

Invoke-LanguageModeTestingSupportCmdlet -SetLockdownMode

$results = $sb | Start-ThreadJob -ScriptBlock { $input | ForEach-Object { & $_ } } | Wait-Job | Receive-Job

}

finally

{

Invoke-LanguageModeTestingSupportCmdlet -RevertLockdownMode -EnableFullLanguageMode

}

$results | Should -BeExactly "ConstrainedLanguage"

}

It "ThreadJob untrusted script file must run in ConstrainedLanguage mode with system lock down" {

try

{

$ExecutionContext.SessionState.LanguageMode = "ConstrainedLanguage"

Invoke-LanguageModeTestingSupportCmdlet -SetLockdownMode

$results = Start-ThreadJob -File $scriptUntrustedFilePath | Wait-Job | Receive-Job

}

finally

{

Invoke-LanguageModeTestingSupportCmdlet -RevertLockdownMode -EnableFullLanguageMode

}

$results | Should -BeExactly "ConstrainedLanguage"

}

It "ThreadJob trusted script file must run in FullLanguage mode with system lock down" {

try

{

$ExecutionContext.SessionState.LanguageMode = "ConstrainedLanguage"

Invoke-LanguageModeTestingSupportCmdlet -SetLockdownMode

$results = Start-ThreadJob -File $scriptTrustedFilePath | Wait-Job | Receive-Job

}

finally

{

Invoke-LanguageModeTestingSupportCmdlet -RevertLockdownMode -EnableFullLanguageMode

}

$results | Should -BeExactly "FullLanguage"

}

It "ThreadJob trusted script file *with* untrusted initialization script must run in ConstrainedLanguage mode with system lock down" {

try

{

$ExecutionContext.SessionState.LanguageMode = "ConstrainedLanguage"

Invoke-LanguageModeTestingSupportCmdlet -SetLockdownMode

$results = Start-ThreadJob -File $scriptTrustedFilePath -InitializationScript { "Hello" } | Wait-Job | Receive-Job 3>&1

}

finally

{

Invoke-LanguageModeTestingSupportCmdlet -RevertLockdownMode -EnableFullLanguageMode

}

$results.Count | Should -BeExactly 3 -Because "Includes init script, file script, warning output"

$results[0] | Should -BeExactly "Hello" -Because "This is the expected initialization script output"

$results[1] | Should -BeExactly "ConstrainedLanguage" -Because "This is the expected script file language mode"

}

finally

{

if ($defaultParamValues -ne $null)

{

$Global:PSDefaultParameterValues = $defaultParamValues

}

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