How much and how often do you work with autotests in Pytest?

We regularly write autotests using Pytest, especially for critical parts of the code and business logic. Usually, we cover main functions and classes with unit tests, as well as integration tests to verify component interactions.

The frequency of writing tests depends on the project stage: in the early stages, it may be less, but as the codebase and requirements grow, coverage increases. Ideally, each new feature is accompanied by tests.

Pytest is convenient due to its simple syntax, support for fixtures, and parameterization, which speeds up writing and maintaining tests.

Example of a simple test:

import pytest
from mymodule import add

def test_add():
    assert add(2, 3) == 5
    assert add(-1, 1) == 0

We also use CI/CD, where autotests run on each commit, helping to quickly identify regressions.