Python Testing with pytest

Specifying Fixture Scope

Fixtures include an optional parameter called scope, which controls how often a fixture gets set up and torn down. The scope parameter to @pytest.fixture() can have the values of function, class, module, or session. The default scope is function. The tasks_db fixture and all of the fixtures so far don’t specify a scope. Therefore, they are function scope fixtures.

Here’s a rundown of each scope value:

scope=’function’

Run once per test function. The setup portion is run before each test using the fixture. The teardown portion is run after each test using the fixture. This is the default scope used when no scope parameter is specified.

scope=’class’

Run once per test class, regardless of how many test methods are in the ...