| from visma.utils.integers import gcd, factors | |
| from visma.utils.polynomials import syntheticDivision | |
| ################## | |
| # utils.integers # | |
| ################## | |
| def test_gcd(): | |
| assert gcd([1]) == 1 | |
| assert gcd([3, 6, 12, 24]) == 3 | |
| assert gcd([-2, 4, 8]) == -2 | |
| assert gcd([2, -4, 8]) == 2 | |
| def test_factors(): | |
| assert factors(24) == [1, 2, 3, 4, 6, 8, 12, 24] | |
| assert factors(0.5) == [] # Invalid input | |
| ##################### | |
| # utils.polynomials # | |
| ##################### | |
| def test_syntheticDivision(): | |
| assert syntheticDivision([1, 2, 1], -1) == ([1.0, 1.0], 0.0) | |
| # (x^2 + 2x + 1)/(x+1) | |
| assert syntheticDivision([3, 2, 1, 3], 2) == ([3.0, 8.0, 17.0], 37.0) | |
| # (3x^2 + 2x + x + 3)/(x-2) | |