When to Create Fixtures?
Fixtures in pytest are used to provide a fixed baseline upon which tests can reliably and repeatedly execute. Fixtures are reusable components that are used to set up a base state for tests. They are particularly useful for setting up complex objects, connecting to databases, or doing any setup that might be needed before your tests can run. They are ideal for:
- Setting up external resources: like databases or network connections.
- Initializing data: that is required across multiple test functions.
- Configuring environment: such as setting up paths or external variables.
Example: In below example, we create a fixture named “my_fixture” which is defined using the “@pytest.fixture” decorator. This fixture function returns a list [1, 2, 3].
import pytest
@pytest.fixture
def my_fixture():
return [1, 2, 3]
def test_sum(sample_data):
assert sum(sample_data) == 6
Pytest Tutorial | Unit Testing in Python using Pytest Framework
In the process of development of applications, testing plays a crucial role. It ensures the developers that the application is error-free and the application is running as per the expectation. It should be done to ensure a seamless experience for the user. In this article, we will learn about testing Python applications using Pytest.