85 lines
2.0 KiB
ReStructuredText
85 lines
2.0 KiB
ReStructuredText
A session-fixture which can look at all collected tests
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A session-scoped fixture effectively has access to all
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collected test items. Here is an example of a fixture
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function which walks all collected tests and looks
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if their test class defines a ``callme`` method and
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calls it:
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.. code-block:: python
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# content of conftest.py
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import pytest
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@pytest.fixture(scope="session", autouse=True)
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def callattr_ahead_of_alltests(request):
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print("callattr_ahead_of_alltests called")
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seen = {None}
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session = request.node
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for item in session.items:
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cls = item.getparent(pytest.Class)
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if cls not in seen:
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if hasattr(cls.obj, "callme"):
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cls.obj.callme()
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seen.add(cls)
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test classes may now define a ``callme`` method which
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will be called ahead of running any tests:
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.. code-block:: python
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# content of test_module.py
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class TestHello:
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@classmethod
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def callme(cls):
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print("callme called!")
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def test_method1(self):
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print("test_method1 called")
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def test_method2(self):
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print("test_method2 called")
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class TestOther:
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@classmethod
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def callme(cls):
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print("callme other called")
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def test_other(self):
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print("test other")
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# works with unittest as well ...
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import unittest
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class SomeTest(unittest.TestCase):
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@classmethod
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def callme(self):
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print("SomeTest callme called")
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def test_unit1(self):
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print("test_unit1 method called")
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If you run this without output capturing:
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.. code-block:: pytest
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$ pytest -q -s test_module.py
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callattr_ahead_of_alltests called
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callme called!
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callme other called
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SomeTest callme called
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test_method1 called
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.test_method2 called
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.test other
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.test_unit1 method called
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.
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4 passed in 0.12s
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