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6/27/2026
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Pester

5.7.1

Pester provides a framework for running BDD style Tests to execute and validate PowerShell commands inside of PowerShell and offers a powerful set of Mocking Functions that allow tests to mimic and mock the functionality of any command inside of a piece of PowerShell code being tested. Pester tests can execute any command or script that is accessible to a pester test

Pester provides a framework for running BDD style Tests to execute and validate PowerShell commands inside of PowerShell and offers a powerful set of Mocking Functions that allow tests to mimic and mock the functionality of any command inside of a piece of PowerShell code being tested. Pester tests can execute any command or script that is accessible to a pester test file. This can include functions, Cmdlets, Modules and scripts. Pester can be run in ad hoc style in a console or it can be integrated into the Build scripts of a Continuous Integration system.

Minimum PowerShell version

3.0

Installation Options

Copy and Paste the following command to install this package using PowerShellGet More Info

Install-Module -Name Pester

Copy and Paste the following command to install this package using Microsoft.PowerShell.PSResourceGet More Info

Install-PSResource -Name Pester

You can deploy this package directly to Azure Automation. Note that deploying packages with dependencies will deploy all the dependencies to Azure Automation. Learn More

Manually download the .nupkg file to your system's default download location. Note that the file won't be unpacked, and won't include any dependencies. Learn More

Owners

adityap

Copyright

Copyright (c) 2025 by Pester Team, licensed under Apache 2.0 License.

Package Details

Author(s)

Pester Team

Tags

powershell unit_testing bdd tdd mocking Windows Linux MacOS

Functions

Invoke-Pester Describe Context It Mock InModuleScope BeforeDiscovery BeforeAll BeforeEach AfterEach AfterAll Should Add-ShouldOperator Get-ShouldOperator Export-NUnitReport ConvertTo-NUnitReport Export-JUnitReport ConvertTo-JUnitReport ConvertTo-Pester4Result New-PesterContainer New-PesterConfiguration Assert-VerifiableMock Assert-MockCalled Set-ItResult New-MockObject New-Fixture

PSEditions

Dependencies

This module has no dependencies.

Release Notes

https://github.com/pester/Pester/releases/tag/5.7.1

FileList

Pester.nuspec
Pester.Format.ps1xml
en-US\about_Pester.help.txt
en-US\about_PesterConfiguration.help.txt
Pester.ps1
schemas\Cobertura\coverage-loose.dtd
Pester.psd1
schemas\JaCoCo\report.dtd
Pester.psm1
schemas\JUnit4\junit_schema_4.xsd
PesterConfiguration.Format.ps1xml
schemas\NUnit25\nunit_schema_2.5.xsd
bin\net452\Pester.dll
schemas\NUnit3\TestDefinitions.xsd
bin\net452\Pester.pdb
schemas\NUnit3\TestFilterDefinitions.xsd
bin\netstandard2.0\Pester.dll
schemas\NUnit3\TestResult.xsd
bin\netstandard2.0\Pester.pdb

Version History

Version	Downloads	Last updated
5.7.1 (current version)	0	6/27/2026
5.4.0	0	6/27/2026