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Merge pull request #2980 from nicoddemus/immutable-fix-parameters 

Add CHANGELOG entry about pytest.fixture "params" being now immutable
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Bruno Oliveira 2017-11-30 19:56:03 -02:00 committed by GitHub
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CHANGELOG.rst
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@ -38,6 +38,14 @@ Deprecations and Removals
with the boolean ``Node._skipped_by_mark``. (`#2767
<https://github.com/pytest-dev/pytest/issues/2767>`_)
- The ``params`` list passed to ``pytest.fixture`` is now for
all effects considered immutable and frozen at the moment of the ``pytest.fixture``
call. Previously the list could be changed before the first invocation of the fixture
allowing for a form of dynamic parametrization (for example, updated from command-line options),
but this was an unwanted implementation detail which complicated the internals and prevented
some internal cleanup. See issue `#2959 <https://github.com/pytest-dev/pytest/issues/2959>`_
for details and a recommended workaround.
Features
--------