# Python Unittest

> Writing test cases, assertions, mocking API calls, and running test runner pipelines using unittest.

- Skill: `lord1egypt/python-unittest` (Agent Skill)
- Install (CLI): `npx skillmds@latest add lord1egypt/python-unittest`
- Raw SKILL.md: https://api.skillmd.com/api/skills/lord1egypt/python-unittest/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Integrations & APIs
- License: MIT license
- Author: Lord1Egypt (https://skillmd.com/u/lord1egypt)
- Updated: 2026-09-10
- Page: https://skillmd.com/skills/lord1egypt/python-unittest

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# Python Unittest

## Overview
unittest is the built-in testing framework in Python, offering clean class-based test configurations.

## When to Use This Skill
Use to create unit tests and verify the logic correctness of your code modules.

## Quick Start (with runnable code examples)

```python
import unittest

def add_values(x, y):
    return x + y

class TestMathOperations(unittest.TestCase):
    def test_addition(self):
        self.assertEqual(add_values(2, 3), 5)

if __name__ == '__main__':
    unittest.main()
```

## Advanced Usage
Configure test fixtures (`setUp`/`tearDown`), mock external requests using `unittest.mock.patch`, and assert custom errors.

## Key References
- [Python unittest documentation](https://docs.python.org/3/library/unittest.html)

## Dependencies
- Python Standard Library