# Test with multiple test cases using parametrize
@pytest.mark.parametrize("a, b, expected", [
    (4, 2, 2),
    (10, 2, 5),
    (-6, 2, -3),
    (0, 1, 0)
])
def test_divide(calculator, a, b, expected):
    assert calculator.divide(a, b) == expected

# Test exception handling
def test_divide_by_zero(calculator):
    with pytest.raises(ValueError) as exc_info:
        calculator.divide(1, 0)
    assert str(exc_info.value) == "Cannot divide by zero"

# Test class demonstrating grouping related tests
class TestCalculatorClass:
    def test_add_positive_numbers(self, calculator):
        assert calculator.add(1, 2) == 3
    
    def test_add_negative_numbers(self, calculator):
        assert calculator.add(-1, -2) == -3
    
    @pytest.mark.skip(reason="Feature not implemented yet")
    def test_multiply(self, calculator):
        assert calculator.multiply(2, 3) == 6

# Custom marker example
@pytest.mark.slow
def test_slow_operation(calculator):
    # Simulate a slow test
    import time
    time.sleep(0.1)
    assert calculator.add(1, 1) == 2