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pytest documentation
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  • Get Started
  • How-to guides
    • How to invoke pytest
    • How to write and report assertions in tests
    • How to use fixtures
    • How to mark test functions with attributes
    • How to parametrize fixtures and test functions
    • How to use temporary directories and files in tests
    • How to monkeypatch/mock modules and environments
    • How to run doctests
    • How to re-run failed tests and maintain state between test runs
    • How to handle test failures
    • Managing pytest’s output
    • How to manage logging
    • How to capture stdout/stderr output
    • How to capture warnings
    • How to use skip and xfail to deal with tests that cannot succeed
    • How to install and use plugins
    • Writing plugins
    • Writing hook functions
    • How to use pytest with an existing test suite
    • How to use unittest-based tests with pytest
    • How to implement xunit-style set-up
    • How to set up bash completion
  • Reference guides
    • API Reference
    • Fixtures reference
    • Configuration
    • Exit codes
    • Pytest Plugin List
  • Explanation
    • Anatomy of a test
    • About fixtures
    • Good Integration Practices
    • pytest import mechanisms and sys.path/PYTHONPATH
    • Typing in pytest
    • CI Pipelines
    • Flaky tests
  • Examples and customization tricks
    • Demo of Python failure reports with pytest
    • Basic patterns and examples
    • Parametrizing tests
    • Working with custom markers
    • A session-fixture which can look at all collected tests
    • Changing standard (Python) test discovery
    • Working with non-python tests
    • Using a custom directory collector

About the project

  • Changelog
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  • History
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  • pytest @ PyPI
  • pytest @ GitHub
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Explanation¶

  • Anatomy of a test
  • About fixtures
  • Good Integration Practices
  • pytest import mechanisms and sys.path/PYTHONPATH
  • Typing in pytest
  • CI Pipelines
  • Flaky tests
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Anatomy of a test
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Pytest Plugin List
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