diff options
Diffstat (limited to 'Lib/test/test_rational.py')
| -rw-r--r-- | Lib/test/test_rational.py | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/Lib/test/test_rational.py b/Lib/test/test_rational.py index 284a42ad7b..c9a129f77b 100644 --- a/Lib/test/test_rational.py +++ b/Lib/test/test_rational.py @@ -117,6 +117,17 @@ class RationalTest(unittest.TestCase): r.__init__(2, 15) self.assertEquals((7, 3), _components(r)) + self.assertRaises(AttributeError, setattr, r, 'numerator', 12) + self.assertRaises(AttributeError, setattr, r, 'denominator', 6) + self.assertEquals((7, 3), _components(r)) + + # But if you _really_ need to: + r._numerator = 4 + r._denominator = 2 + self.assertEquals((4, 2), _components(r)) + # Which breaks some important operations: + self.assertNotEquals(R(4, 2), r) + def testFromFloat(self): self.assertRaisesMessage( TypeError, "Rational.from_float() only takes floats, not 3 (int)", @@ -193,7 +204,7 @@ class RationalTest(unittest.TestCase): self.assertEqual(R.from_float(0.0).approximate(10000), R(0)) def testConversions(self): - self.assertTypedEquals(-1, trunc(R(-11, 10))) + self.assertTypedEquals(-1, math.trunc(R(-11, 10))) self.assertTypedEquals(-2, math.floor(R(-11, 10))) self.assertTypedEquals(-1, math.ceil(R(-11, 10))) self.assertTypedEquals(-1, math.ceil(R(-10, 10))) @@ -337,11 +348,11 @@ class RationalTest(unittest.TestCase): # Because 10**23 can't be represented exactly as a float: self.assertFalse(R(10**23) == float(10**23)) # The first test demonstrates why these are important. - self.assertFalse(1e23 < float(R(trunc(1e23) + 1))) - self.assertTrue(1e23 < R(trunc(1e23) + 1)) - self.assertFalse(1e23 <= R(trunc(1e23) - 1)) - self.assertTrue(1e23 > R(trunc(1e23) - 1)) - self.assertFalse(1e23 >= R(trunc(1e23) + 1)) + self.assertFalse(1e23 < float(R(math.trunc(1e23) + 1))) + self.assertTrue(1e23 < R(math.trunc(1e23) + 1)) + self.assertFalse(1e23 <= R(math.trunc(1e23) - 1)) + self.assertTrue(1e23 > R(math.trunc(1e23) - 1)) + self.assertFalse(1e23 >= R(math.trunc(1e23) + 1)) def testBigComplexComparisons(self): self.assertFalse(R(10**23) == complex(10**23)) |