Unit Testing — Automated Tests with unittest — Free Python Tutorial
Learn Unit Testing — Automated Tests with unittest in Python with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.
TL;DR: Learn Unit Testing — Automated Tests with unittest in Python with a free, beginner-friendly tutorial, examples and practice for Indian students on Syl…
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Unit Testing — Automated Tests with unittest in Python
Unit testing verifies individual functions work correctly. Professional code is always tested — code without tests is rarely accepted in the industry.
Python's unittest module is built-in. pytest is the industry standard (simpler syntax, auto-discovery). Both use the assert-based pattern.
Test-Driven Development (TDD): write the test FIRST, then write code to make it pass. Forces clarity about what a function should do before writing it.
Unit Testing — Automated Tests with unittest — Syntax
import unittest
class TestMyFunction(unittest.TestCase):
def setUp(self): ... # runs before each test
def test_basic(self):
self.assertEqual(add(2,3), 5)
self.assertRaises(ValueError, fn, bad_input)
def tearDown(self): ... # runs after each test
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