Pester
Pester is an open-source testing and mock framework for PowerShell. It allows you to write tests to validate code and script functionality in an easy, intuitive way.
testing
mocking
powershell
Pester: Open-Source Testing and Mock Framework for PowerShells
Pester is an open-source testing and mock framework for PowerShell. It allows you to write tests to validate code and script functionality in an easy, intuitive way.
What is Pester?
Pester is an open-source testing and mock framework for PowerShell. It allows you to write PowerShell tests to validate code and script functionality in an easy, intuitive way. Some key things to know about Pester:
- It is modeled after established testing frameworks like Jest and RSpec, providing a familiar syntax for writing tests.
- It allows you to test any PowerShell code including scripts, modules, DSC configurations, even entire builds.
- Pester tests can validate code functionality, outcomes, best practices, and more. Common test types include unit tests, integration tests, and acceptance/validation tests.
- By facilitating test-driven development in your PowerShell projects, Pester enables you to take an incremental quality-oriented approach.
- Mocking and stubbing capabilities allow you to simulate commands, responses or other functionality. This simplifies executing tests in isolation.
- Detailed test reports provide code coverage metrics to track what lines/branches execute during test runs.
- An active open source community behind Pester provides ongoing support, examples, and new testing capabilities.
In summary, Pester brings a reliable testing framework to PowerShell. It makes validating code quality and functionality through testing straightforward across many types of development projects.
Pester Features
Features
- Unit testing framework
- Mocking framework
- Test discovery
- Test isolation
- Code coverage analysis
- Test fixtures
- Parameterized tests
- Assertions
Pricing
- Open Source
Pros
Easy to learn and use
Integrates seamlessly with PowerShell
Active community support
Open source and free
Good documentation
Supports TDD workflow
Cons
Limited to PowerShell only
Less features compared to other testing frameworks
Steep learning curve for beginners
Official Links
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