Unittest, assertEqual, setUp & tearDown Explained - Python Unit Testing Tutorial #28

Learn unit testing in Python! 🧪 In this lesson, you will learn: ✅ Why automated testing beats manual testing ✅ unittest.TestCase to organize tests into classes ✅ assertEqual to verify return values ✅ assertRaises to test error handling ✅ assertIn to check membership ✅ setUp to create fresh test fixtures before each test ✅ tearDown to clean up after each test ✅ python3 -m unittest -v for verbose test output ✅ Testing classes with state and validation ✅ Mini Project: Gradebook with complete test coverage 🕐 Timestamps: 0:00 - Introduction 0:22 - Test Basics Explained 0:49 - Test Basics Demo 3:17 - setUp & tearDown Explained 3:44 - setUp & tearDown Demo 6:42 - Gradebook Explained 7:09 - Gradebook Demo 10:53 - Recap 11:28 - End 💻 Source Code: https://github.com/GoCelesteAI/python_unit_testing 📚 Code from this lesson: # Create a test class class TestMathTools(unittest.TestCase): def test_add(self): self.assertEqual(add(2, 3), 5) def test_divide_by_zero(self): with self.assertRaises(ValueError): divide(10, 0) # Run tests with verbose output python3 -m unittest test_math_tools -v 🔗 Previous: Lesson 27 - Virtual Environments 🔗 Next: Lesson 29 - File I/O #Python #PythonTutorial #LearnPython #Programming #UnitTesting #unittest #Testing #PythonBasics Tags: Python, Python tutorial, Python for beginners, learn Python, unit testing, unittest, assertEqual, assertRaises, setUp, tearDown, TestCase, testing, TDD, Python basics, CelesteAI Category: Education