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        "author": "Wim Glenn",
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        "description": "|pypi|_ |pyversions|_ |travis|_\n\n.. |pypi| image:: https://img.shields.io/pypi/v/pytest-raisin.svg\n.. _pypi: https://pypi.org/project/pytest-raisin\n\n.. |pyversions| image:: https://img.shields.io/pypi/pyversions/pytest-raisin.svg\n.. _pyversions:\n\n.. |travis| image:: https://img.shields.io/travis/wimglenn/pytest-raisin.svg?branch=master\n.. _travis: https://travis-ci.com/wimglenn/pytest-raisin\n\n\n.. image:: https://user-images.githubusercontent.com/6615374/50065259-46af2780-017b-11e9-8af3-38f340f11df1.png\n\n\npytest-raisin\n=============\n\nPlugin putting a higher-level interface to `pytest.raises <https://docs.pytest.org/en/latest/assert.html#assertions-about-expected-exceptions>`_.\nIt allows to use an exception *instance* as the expected value, which would be compared with the actual exception (if any) based upon the type and the ``args`` attribute.\n\n.. code-block:: bash\n\n   # Old-skool:\n   with pytest.raises(SystemExit) as cm:\n       sys.exit(1)\n   assert cm.value.args == (1,)\n\n   # New hotness:\n   with pytest.raises(SystemExit(1)):\n       sys.exit(1)\n\n\nMore sophisticated comparisons can be registered for user-defined error subclasses if necessary (see `Advanced Usage`_).\n\n\nInstallation\n------------\n\n.. code-block:: bash\n\n   pip install pytest-raisin\n\n\nBasic Usage\n-----------\n\nUsage in your tests looks like this\n\n.. code-block:: python\n\n   >>> currant_exchange_rates = {\n   ...     \"sultana\": 50,\n   ...     \"raisins\": 100,\n   ... }\n   >>> with pytest.raises(KeyError(\"grape\")):\n   ...     currant_exchange_rates[\"grape\"]\n   ...\n   >>> with pytest.raises(KeyError(\"sultanas\")):\n   ...     currant_exchange_rates[\"prunes\"]\n   ...\n   AssertionError: KeyError args do not match!\n       Actual:   ('prunes',)\n       Expected: ('sultanas',)\n\n   >>> with pytest.raises(KeyError(\"Carlos Sultana\")):\n   ...     currant_exchange_rates[\"sultana\"]\n   Failed: DID NOT RAISE KeyError('Carlos Sultana')\n\n\nThe plugin is enabled by default: ``pytest.raises`` is monkeypatched with the new functionality directly. To temporarily execute without the new stuff, use ``pytest -p no:pytest-raisin``.\n\nThe various legacy forms of ``pytest.raises`` will continue to work, falling back to the original implementation.\n\n\nAdvanced Usage\n--------------\n\nIn most use-cases, the default behaviour of considering exceptions to be equivalent if the `args` attributes have matching tuples should be satisfactory.\nHowever, some 3rd-party exception classes have additional logic inside them (e.g. Django's ``ValidationError``) and you might want to provide a more custom assertion here.\n\nPlugin users may register their own errors/callables via pytest-raisin's decorator factory:\n\n\n.. code-block:: python\n\n   @pytest.register_exception_compare(MyError)\n   def my_error_compare(exc_actual, exc_expected):\n       ...\n\nYour comparison function will be called with the arguments ``exc_actual`` and ``exc_expected``, which will *both* be directly instances of ``MyError`` (the test will have failed earlier if the type was not an exact match). This function should inspect the instances and raise an ``AssertionError`` with useful context message should they be considered not to match. It should do nothing (i.e. return ``None``) if the exceptions should be considered equivalent.\n\n**Note:** An instance of a subclass is *not* permitted when using an exception instance as the argument to ``pytest.raises``. If you want to allow subclassing, use the original syntax of passing the type.\n\n",
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