diff options
Diffstat (limited to 'Lib')
| -rw-r--r-- | Lib/test/test_math.py | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/Lib/test/test_math.py b/Lib/test/test_math.py index b3301f6..ad8273d 100644 --- a/Lib/test/test_math.py +++ b/Lib/test/test_math.py @@ -974,6 +974,41 @@ class MathTests(unittest.TestCase): with self.assertRaises(TypeError): math.isqrt(value) + def test_lcm(self): + lcm = math.lcm + self.assertEqual(lcm(0, 0), 0) + self.assertEqual(lcm(1, 0), 0) + self.assertEqual(lcm(-1, 0), 0) + self.assertEqual(lcm(0, 1), 0) + self.assertEqual(lcm(0, -1), 0) + self.assertEqual(lcm(7, 1), 7) + self.assertEqual(lcm(7, -1), 7) + self.assertEqual(lcm(-23, 15), 345) + self.assertEqual(lcm(120, 84), 840) + self.assertEqual(lcm(84, -120), 840) + self.assertEqual(lcm(1216342683557601535506311712, + 436522681849110124616458784), + 16592536571065866494401400422922201534178938447014944) + x = 43461045657039990237 + y = 10645022458251153277 + + for c in (652560, + 57655923087165495981): + a = x * c + b = y * c + d = x * y * c + self.assertEqual(lcm(a, b), d) + self.assertEqual(lcm(b, a), d) + self.assertEqual(lcm(-a, b), d) + self.assertEqual(lcm(b, -a), d) + self.assertEqual(lcm(a, -b), d) + self.assertEqual(lcm(-b, a), d) + self.assertEqual(lcm(-a, -b), d) + self.assertEqual(lcm(-b, -a), d) + self.assertEqual(lcm(MyIndexable(120), MyIndexable(84)), 840) + self.assertRaises(TypeError, lcm, 120.0, 84) + self.assertRaises(TypeError, lcm, 120, 84.0) + def testLdexp(self): self.assertRaises(TypeError, math.ldexp) self.ftest('ldexp(0,1)', math.ldexp(0,1), 0) |