What is the difference if the fixture is inside or outside of Class(bla0, bla1)?
@pytest.fixtures()
def bla0()
...
class MyTest:
@pytest.fixtures()
def bla1()
...
@pytest.mark.usefixtures("bla0", "bla1")
def test ...
Fixtures and their visibility are a bit odd in pytest. They don't require importing, but if you defined them in a test_*. py file, they'll only be available in that file. You can however put them in a (project- or subfolder-wide) conftest.py to use them in multiple files.
Like normal functions, fixtures also have scope and lifetime. The default scope of a pytest fixture is the function scope. Apart from the function scope, the other pytest fixture scopes are – module, class, and session.
To access the fixture function, the tests have to mention the fixture name as input parameter. Pytest while the test is getting executed, will see the fixture name as input parameter. It then executes the fixture function and the returned value is stored to the input parameter, which can be used by the test.
Pytest fixtures are functions that can be used to manage our apps states and dependencies. Most importantly, they can provide data for testing and a wide range of value types when explicitly called by our testing software. You can use the mock data that fixtures create across multiple tests.
Just a matter of visibility... bla1
can only be used in test methods declared in MyTest
.
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