Testing class and methods

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examples/pytest/test_mymath_class.py

import mymath

class TestMath():
    def test_math(self):
        assert mymath.add(2, 3)  == 5
        assert mymath.div(6, 3)  == 2
        assert mymath.div(42, 1) == 42
        assert mymath.add(-1, 1) == 0