12. Testing

The Assert Statement

The simplest test. If condition is False, it crashes the app.

python
assert 2 + 2 == 4, "Math is broken"

Unit Testing

We use the unittest module or pytest framework.

python
import unittest

def add(a, b): return a + b

class TestMath(unittest.TestCase):
    def test_add(self):
        self.assertEqual(add(1, 1), 2)

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