Closed
Description
Originally reported by: Praveen Shirali (BitBucket: praveenshirali, GitHub: praveenshirali)
I came across the following situation which I have simplified into the example below.
If a Module Fixture depends on a Function Fixture and a test depends on both, but has (Function Fixture, Module Fixture) in its argument order, the Module Fixture is reduced to run as a Function Fixture
Tested on py.test 2.6.4
#!python
import pytest
class SomeClass(object): pass
@pytest.fixture
def function_fixture(request):
def fin():
print "I am a function finalizer"
request.addfinalizer(fin)
print "\n"
print "I am a function fixture"
return SomeClass()
@pytest.fixture(scope="module")
def module_fixture(request, function_fixture):
def fin():
print "I am a module finalizer"
request.addfinalizer(fin)
print "I am a module fixture"
return SomeClass()
def test_one(function_fixture, module_fixture):
print "Test One"
print "Module Fixture: {}".format(module_fixture)
def test_two(function_fixture, module_fixture):
print "Test Two"
print "Module Fixture: {}".format(module_fixture)
Output: (-s --verbose)
test.py::test_one
I am a function fixture
I am a module fixture
Test One
Module Fixture: <test.SomeClass object at 0x102f037d0>
PASSEDI am a module finalizer
I am a function finalizer
test.py::test_two
I am a function fixture
I am a module fixture
Test Two
Module Fixture: <test.SomeClass object at 0x102f48fd0>
PASSEDI am a module finalizer
I am a function finalizer
Notice that the Module Fixture code has executed twice and the addresses of the SomeClass instances are different.
If module_fixture did not depend on function_fixture, the module_fixture would run only once. Test function calling (module_fixture, function_fixture) results in a ScopeMismatchError.