Expert Python Programming - Third Edition

Writing test fixtures

nose supports the following three levels of fixtures:

• Package level: The setup and teardown functions can be added in the __init__.py module of a test's package containing all test modules
• Module level: A test module can have its own setup and teardown functions
• Test level: The callable can also have fixture functions using the @with_setup() decorator provided

For instance, to set a test fixture at the module and test level, use this code:

def setup(): 
    # setup code, launched for the whole module 
    ... 
 
def teardown(): 
    # teardown code, launched for the whole module 
    ...  
 
def set_ok(): 
    # setup code used on demand using with_setup decorator
    ... 
 
@with_setup(set_ok) 
def test_ok(): 
    print('my test')