Have you run tests with different input data sets to check system behavior?

Yes, running tests with different sets of input data is a standard practice to verify system behavior under various conditions. In Python, this is often done using test parameterization, for example, with the pytest library:

import pytest

@pytest.mark.parametrize("input,expected", [
    (2, 4),
    (3, 9),
    (4, 16),
])
def test_square(input, expected):
    assert input ** 2 == expected

This approach helps ensure that the function works correctly with different values and covers more scenarios without duplicating code.