diff options
Diffstat (limited to 'Lib/test/test_decimal.py')
| -rw-r--r-- | Lib/test/test_decimal.py | 79 |
1 files changed, 66 insertions, 13 deletions
diff --git a/Lib/test/test_decimal.py b/Lib/test/test_decimal.py index 513ba16..98b9479 100644 --- a/Lib/test/test_decimal.py +++ b/Lib/test/test_decimal.py @@ -95,35 +95,61 @@ RoundingDict = {'ceiling' : ROUND_CEILING, #Maps test-case names to roundings. # Name adapter to be able to change the Decimal and Context # interface without changing the test files from Cowlishaw -nameAdapter = {'toeng':'to_eng_string', - 'tosci':'to_sci_string', - 'samequantum':'same_quantum', - 'tointegral':'to_integral_value', - 'tointegralx':'to_integral_exact', - 'remaindernear':'remainder_near', - 'divideint':'divide_int', - 'squareroot':'sqrt', +nameAdapter = {'and':'logical_and', 'apply':'_apply', 'class':'number_class', 'comparesig':'compare_signal', 'comparetotal':'compare_total', 'comparetotmag':'compare_total_mag', - 'copyabs':'copy_abs', 'copy':'copy_decimal', + 'copyabs':'copy_abs', 'copynegate':'copy_negate', 'copysign':'copy_sign', - 'and':'logical_and', - 'or':'logical_or', - 'xor':'logical_xor', + 'divideint':'divide_int', 'invert':'logical_invert', + 'iscanonical':'is_canonical', + 'isfinite':'is_finite', + 'isinfinite':'is_infinite', + 'isnan':'is_nan', + 'isnormal':'is_normal', + 'isqnan':'is_qnan', + 'issigned':'is_signed', + 'issnan':'is_snan', + 'issubnormal':'is_subnormal', + 'iszero':'is_zero', 'maxmag':'max_mag', 'minmag':'min_mag', 'nextminus':'next_minus', 'nextplus':'next_plus', 'nexttoward':'next_toward', + 'or':'logical_or', 'reduce':'normalize', + 'remaindernear':'remainder_near', + 'samequantum':'same_quantum', + 'squareroot':'sqrt', + 'toeng':'to_eng_string', + 'tointegral':'to_integral_value', + 'tointegralx':'to_integral_exact', + 'tosci':'to_sci_string', + 'xor':'logical_xor', } +# The following functions return True/False rather than a Decimal instance + +LOGICAL_FUNCTIONS = ( + 'is_canonical', + 'is_finite', + 'is_infinite', + 'is_nan', + 'is_normal', + 'is_qnan', + 'is_signed', + 'is_snan', + 'is_subnormal', + 'is_zero', + 'same_quantum', + ) + # For some operations (currently exp, ln, log10, power), the decNumber # reference implementation imposes additional restrictions on the # context and operands. These restrictions are not part of the @@ -321,7 +347,7 @@ class DecimalTest(unittest.TestCase): print("--", self.context) try: result = str(funct(*vals)) - if fname == 'same_quantum': + if fname in LOGICAL_FUNCTIONS: result = str(int(eval(result))) # 'True', 'False' -> '1', '0' except Signals as error: self.fail("Raised %s in %s" % (error, s)) @@ -426,13 +452,18 @@ class DecimalExplicitConstructionTest(unittest.TestCase): #bad sign self.assertRaises(ValueError, Decimal, (8, (4, 3, 4, 9, 1), 2) ) + self.assertRaises(ValueError, Decimal, (0., (4, 3, 4, 9, 1), 2) ) + self.assertRaises(ValueError, Decimal, (Decimal(1), (4, 3, 4, 9, 1), 2)) #bad exp self.assertRaises(ValueError, Decimal, (1, (4, 3, 4, 9, 1), 'wrong!') ) + self.assertRaises(ValueError, Decimal, (1, (4, 3, 4, 9, 1), 0.) ) + self.assertRaises(ValueError, Decimal, (1, (4, 3, 4, 9, 1), '1') ) #bad coefficients self.assertRaises(ValueError, Decimal, (1, (4, 3, 4, None, 1), 2) ) self.assertRaises(ValueError, Decimal, (1, (4, -3, 4, 9, 1), 2) ) + self.assertRaises(ValueError, Decimal, (1, (4, 10, 4, 9, 1), 2) ) def test_explicit_from_Decimal(self): @@ -1025,6 +1056,28 @@ class DecimalUsabilityTest(unittest.TestCase): d = Decimal("Infinity") self.assertEqual(d.as_tuple(), (0, (0,), 'F') ) + #leading zeros in coefficient should be stripped + d = Decimal( (0, (0, 0, 4, 0, 5, 3, 4), -2) ) + self.assertEqual(d.as_tuple(), (0, (4, 0, 5, 3, 4), -2) ) + d = Decimal( (1, (0, 0, 0), 37) ) + self.assertEqual(d.as_tuple(), (1, (0,), 37)) + d = Decimal( (1, (), 37) ) + self.assertEqual(d.as_tuple(), (1, (0,), 37)) + + #leading zeros in NaN diagnostic info should be stripped + d = Decimal( (0, (0, 0, 4, 0, 5, 3, 4), 'n') ) + self.assertEqual(d.as_tuple(), (0, (4, 0, 5, 3, 4), 'n') ) + d = Decimal( (1, (0, 0, 0), 'N') ) + self.assertEqual(d.as_tuple(), (1, (), 'N') ) + d = Decimal( (1, (), 'n') ) + self.assertEqual(d.as_tuple(), (1, (), 'n') ) + + #coefficient in infinity should be ignored + d = Decimal( (0, (4, 5, 3, 4), 'F') ) + self.assertEqual(d.as_tuple(), (0, (0,), 'F')) + d = Decimal( (1, (0, 2, 7, 1), 'F') ) + self.assertEqual(d.as_tuple(), (1, (0,), 'F')) + def test_immutability_operations(self): # Do operations and check that it didn't change change internal objects. |