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Testing & modern typing

pytest basics, mocks, type hints, TypedDict, Protocol, and static-checking patterns.

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Testing & modern typing easy

Table-Driven Tests in Python (unittest)

Run a single unittest test against many input cases using a list of tuples and subTest.

unittest table-driven testing
Python 
import unittest

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

class TestAddFunction(unittest.TestCase):

    def test_add_with_table(self):
        cases = [
            (1, 2, 3),
            (-1, 1, 0),
            (0, 0, 0),
            (2, -3, -1),
        ]
        for x, y, expected in cases:
            with self.subTest(x…
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