Unittest Skill

Generates Python unittest tests. Built-in testing framework with TestCase, setUp/tearDown, and assertion methods. Use when user mentions "unittest", "TestCase", "self.assertEqual", "Python unittest". Triggers on: "unittest", "TestCase", "self.assertEqual", "Python unittest" (not pytest).

386 stars 76 forksTesting & QAOfficial

Install

skills CLI (Claude Code, Cursor, Codex and more)
npx skills add LambdaTest/agent-skills --skill unittest-skill
Manual install
git clone --depth 1 https://github.com/LambdaTest/agent-skills.git /tmp/agent-skills
mkdir -p ~/.claude/skills
cp -r /tmp/agent-skills/unittest-skill ~/.claude/skills/unittest-skill

Personal skills live in ~/.claude/skills. Use .claude/skills in a project folder to share a skill with your team.

From the SKILL.md

# Python unittest Skill

## Core Patterns

### Basic Test

```python
import unittest

class TestCalculator(unittest.TestCase):
    def setUp(self):
        self.calc = Calculator()

    def test_add(self):
        self.assertEqual(self.calc.add(2, 3), 5)

    def test_divide_by_zero(self):
        with self.assertRaises(ZeroDivisionError):
            self.calc.divide(10, 0)

    def test_multiple_assertions(self):
        self.assertEqual(self.calc.add(2, 2), 4)
        self.assertEqual(self.calc.subtract(5, 3), 2)
        self.assertAlmostEqual(self.calc.divide(10, 3), 3.333, places=3)

    def tearDown(self):
        pass  # cleanup

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

### Assertions

```python
self.assertEqual(a, b)
self.assertNotEqual(a, b)
self.assertTrue(condition)
self.assertFalse(condition)
self.assertIsNone(obj)
self.assertIsNotNone(obj)
self.assertIs(a, b)              # same object
self.assertIn(item, collection)
self.assertNotIn(item, collection)
self.assertIsInstance(obj, cls)
self.assertAlmostEqual(a, b, places=5)
self.assertGreater(a, b)
self.assertLess(a, b)
self.assertRegex(str, r'\d+')
self.assertCountEqual(a, b)     # same elements, any order

# Exception
with self.assertRaises(ValueError) as ctx:
    raise ValueError("bad")
self.assertIn("bad", str(ctx.exception))

# Warning
with self.assertWarns(DeprecationWarning):
    deprecated_function()
```

### SubTest (Parameterized)
Read the full skill on GitHub

Details

Skill name
unittest-skill
Repository
LambdaTest/agent-skills
Path
unittest-skill/SKILL.md
License
MIT
Repo updated
30 October 2026
Listed in
VoltAgent/awesome-agent-skills

FAQ

What does the Unittest Skill skill do?

Generates Python unittest tests. Built-in testing framework with TestCase, setUp/tearDown, and assertion methods. Use when user mentions "unittest", "TestCase", "self.assertEqual", "Python unittest". Triggers on: "unittest", "TestCase", "self.assertEqual", "Python unittest" (not pytest).

How do I install the Unittest Skill skill?

skills CLI (Claude Code, Cursor, Codex and more): npx skills add LambdaTest/agent-skills --skill unittest-skill. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.

Is Unittest Skill popular?

It lives in LambdaTest/agent-skills, which has 386 GitHub stars and 76 forks, and is included in 1 curated skill list.

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