How do I use fixtures in pytest for setup and teardown?

Can you explain how to use fixtures in pytest for setup and teardown?

Sure! In pytest, fixtures are used to set up and tear down resources needed for tests. You can define a fixture using the @pytest.fixture decorator.

How do I define a fixture for a database connection?

You can define a fixture like this:

import pytest

@pytest.fixture
def db_connection():
    connection = create_db_connection()
    yield connection  # This is the setup
    connection.close()  # This is the teardown

What does the yield statement do in this context?

The yield statement allows you to return the setup resource (the database connection) to the test, and after the test completes, the code after yield runs for teardown.

Can I use multiple fixtures in a single test?

Yes, you can use multiple fixtures by specifying them as parameters in your test function. pytest will automatically handle the setup and teardown for each fixture.