1399 lines
45 KiB
Python
1399 lines
45 KiB
Python
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# Copyright (c) 2004 Python Software Foundation.
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# All rights reserved.
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# Written by Eric Price <eprice at tjhsst.edu>
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# and Facundo Batista <facundo at taniquetil.com.ar>
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# and Raymond Hettinger <python at rcn.com>
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# and Aahz (aahz at pobox.com)
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# and Tim Peters
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"""
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These are the test cases for the Decimal module.
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There are two groups of tests, Arithmetic and Behaviour. The former test
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the Decimal arithmetic using the tests provided by Mike Cowlishaw. The latter
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test the pythonic behaviour according to PEP 327.
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Cowlishaw's tests can be downloaded from:
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www2.hursley.ibm.com/decimal/dectest.zip
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This test module can be called from command line with one parameter (Arithmetic
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or Behaviour) to test each part, or without parameter to test both parts. If
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you're working through IDLE, you can import this test module and call test_main()
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with the corresponding argument.
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"""
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from __future__ import with_statement
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import unittest
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import glob
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import os, sys
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import pickle, copy
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from decimal import *
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from test.test_support import (TestSkipped, run_unittest, run_doctest,
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is_resource_enabled)
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import random
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try:
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import threading
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except ImportError:
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threading = None
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# Useful Test Constant
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Signals = getcontext().flags.keys()
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# Tests are built around these assumed context defaults.
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# test_main() restores the original context.
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def init():
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global ORIGINAL_CONTEXT
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ORIGINAL_CONTEXT = getcontext().copy()
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DefaultContext.prec = 9
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DefaultContext.rounding = ROUND_HALF_EVEN
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DefaultContext.traps = dict.fromkeys(Signals, 0)
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setcontext(DefaultContext)
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TESTDATADIR = 'decimaltestdata'
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if __name__ == '__main__':
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file = sys.argv[0]
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else:
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file = __file__
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testdir = os.path.dirname(file) or os.curdir
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directory = testdir + os.sep + TESTDATADIR + os.sep
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skip_expected = not os.path.isdir(directory)
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# Make sure it actually raises errors when not expected and caught in flags
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# Slower, since it runs some things several times.
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EXTENDEDERRORTEST = False
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#Map the test cases' error names to the actual errors
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ErrorNames = {'clamped' : Clamped,
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'conversion_syntax' : InvalidOperation,
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'division_by_zero' : DivisionByZero,
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'division_impossible' : InvalidOperation,
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'division_undefined' : InvalidOperation,
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'inexact' : Inexact,
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'invalid_context' : InvalidOperation,
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'invalid_operation' : InvalidOperation,
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'overflow' : Overflow,
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'rounded' : Rounded,
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'subnormal' : Subnormal,
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'underflow' : Underflow}
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def Nonfunction(*args):
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"""Doesn't do anything."""
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return None
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RoundingDict = {'ceiling' : ROUND_CEILING, #Maps test-case names to roundings.
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'down' : ROUND_DOWN,
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'floor' : ROUND_FLOOR,
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'half_down' : ROUND_HALF_DOWN,
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'half_even' : ROUND_HALF_EVEN,
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'half_up' : ROUND_HALF_UP,
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'up' : ROUND_UP,
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'05up' : ROUND_05UP}
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# Name adapter to be able to change the Decimal and Context
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# interface without changing the test files from Cowlishaw
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nameAdapter = {'and':'logical_and',
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'apply':'_apply',
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'class':'number_class',
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'comparesig':'compare_signal',
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'comparetotal':'compare_total',
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'comparetotmag':'compare_total_mag',
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'copy':'copy_decimal',
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'copyabs':'copy_abs',
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'copynegate':'copy_negate',
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'copysign':'copy_sign',
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'divideint':'divide_int',
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'invert':'logical_invert',
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'iscanonical':'is_canonical',
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'isfinite':'is_finite',
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'isinfinite':'is_infinite',
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'isnan':'is_nan',
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'isnormal':'is_normal',
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'isqnan':'is_qnan',
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'issigned':'is_signed',
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'issnan':'is_snan',
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'issubnormal':'is_subnormal',
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'iszero':'is_zero',
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'maxmag':'max_mag',
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'minmag':'min_mag',
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'nextminus':'next_minus',
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'nextplus':'next_plus',
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'nexttoward':'next_toward',
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'or':'logical_or',
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'reduce':'normalize',
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'remaindernear':'remainder_near',
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'samequantum':'same_quantum',
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'squareroot':'sqrt',
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'toeng':'to_eng_string',
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'tointegral':'to_integral_value',
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'tointegralx':'to_integral_exact',
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'tosci':'to_sci_string',
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'xor':'logical_xor',
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}
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# The following functions return True/False rather than a Decimal instance
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LOGICAL_FUNCTIONS = (
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'is_canonical',
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'is_finite',
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'is_infinite',
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'is_nan',
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'is_normal',
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'is_qnan',
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'is_signed',
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'is_snan',
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'is_subnormal',
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'is_zero',
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'same_quantum',
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)
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# For some operations (currently exp, ln, log10, power), the decNumber
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# reference implementation imposes additional restrictions on the
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# context and operands. These restrictions are not part of the
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# specification; however, the effect of these restrictions does show
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# up in some of the testcases. We skip testcases that violate these
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# restrictions, since Decimal behaves differently from decNumber for
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# these testcases so these testcases would otherwise fail.
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decNumberRestricted = ('power', 'ln', 'log10', 'exp')
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DEC_MAX_MATH = 999999
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def outside_decNumber_bounds(v, context):
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if (context.prec > DEC_MAX_MATH or
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context.Emax > DEC_MAX_MATH or
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-context.Emin > DEC_MAX_MATH):
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return True
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if not v._is_special and v and (
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len(v._int) > DEC_MAX_MATH or
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v.adjusted() > DEC_MAX_MATH or
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v.adjusted() < 1-2*DEC_MAX_MATH):
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return True
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return False
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class DecimalTest(unittest.TestCase):
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"""Class which tests the Decimal class against the test cases.
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Changed for unittest.
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"""
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def setUp(self):
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self.context = Context()
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for key in DefaultContext.traps.keys():
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DefaultContext.traps[key] = 1
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self.ignore_list = ['#']
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# Basically, a # means return NaN InvalidOperation.
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# Different from a sNaN in trim
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self.ChangeDict = {'precision' : self.change_precision,
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'rounding' : self.change_rounding_method,
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'maxexponent' : self.change_max_exponent,
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'minexponent' : self.change_min_exponent,
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'clamp' : self.change_clamp}
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def tearDown(self):
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"""Cleaning up enviroment."""
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# leaving context in original state
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for key in DefaultContext.traps.keys():
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DefaultContext.traps[key] = 0
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return
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def eval_file(self, file):
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global skip_expected
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if skip_expected:
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raise TestSkipped
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return
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for line in open(file).xreadlines():
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line = line.replace('\r\n', '').replace('\n', '')
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#print line
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try:
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t = self.eval_line(line)
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except DecimalException, exception:
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#Exception raised where there shoudn't have been one.
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self.fail('Exception "'+exception.__class__.__name__ + '" raised on line '+line)
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return
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def eval_line(self, s):
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if s.find(' -> ') >= 0 and s[:2] != '--' and not s.startswith(' --'):
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s = (s.split('->')[0] + '->' +
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s.split('->')[1].split('--')[0]).strip()
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else:
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s = s.split('--')[0].strip()
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for ignore in self.ignore_list:
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if s.find(ignore) >= 0:
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#print s.split()[0], 'NotImplemented--', ignore
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return
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if not s:
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return
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elif ':' in s:
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return self.eval_directive(s)
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else:
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return self.eval_equation(s)
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def eval_directive(self, s):
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funct, value = map(lambda x: x.strip().lower(), s.split(':'))
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if funct == 'rounding':
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value = RoundingDict[value]
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else:
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try:
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value = int(value)
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except ValueError:
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pass
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funct = self.ChangeDict.get(funct, Nonfunction)
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funct(value)
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def eval_equation(self, s):
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#global DEFAULT_PRECISION
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#print DEFAULT_PRECISION
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if not TEST_ALL and random.random() < 0.90:
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return
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try:
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Sides = s.split('->')
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L = Sides[0].strip().split()
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id = L[0]
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if DEBUG:
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print "Test ", id,
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funct = L[1].lower()
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valstemp = L[2:]
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L = Sides[1].strip().split()
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ans = L[0]
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exceptions = L[1:]
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except (TypeError, AttributeError, IndexError):
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raise InvalidOperation
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def FixQuotes(val):
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val = val.replace("''", 'SingleQuote').replace('""', 'DoubleQuote')
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val = val.replace("'", '').replace('"', '')
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val = val.replace('SingleQuote', "'").replace('DoubleQuote', '"')
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return val
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fname = nameAdapter.get(funct, funct)
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if fname == 'rescale':
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return
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funct = getattr(self.context, fname)
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vals = []
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conglomerate = ''
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quote = 0
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theirexceptions = [ErrorNames[x.lower()] for x in exceptions]
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for exception in Signals:
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self.context.traps[exception] = 1 #Catch these bugs...
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for exception in theirexceptions:
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self.context.traps[exception] = 0
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for i, val in enumerate(valstemp):
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if val.count("'") % 2 == 1:
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quote = 1 - quote
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if quote:
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conglomerate = conglomerate + ' ' + val
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continue
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else:
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val = conglomerate + val
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conglomerate = ''
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v = FixQuotes(val)
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if fname in ('to_sci_string', 'to_eng_string'):
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if EXTENDEDERRORTEST:
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for error in theirexceptions:
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self.context.traps[error] = 1
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try:
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funct(self.context.create_decimal(v))
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except error:
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pass
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except Signals, e:
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self.fail("Raised %s in %s when %s disabled" % \
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(e, s, error))
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else:
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self.fail("Did not raise %s in %s" % (error, s))
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self.context.traps[error] = 0
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v = self.context.create_decimal(v)
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else:
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v = Decimal(v, self.context)
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vals.append(v)
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ans = FixQuotes(ans)
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# skip tests that are related to bounds imposed in the decNumber
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# reference implementation
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if fname in decNumberRestricted:
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if fname == 'power':
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if not (vals[1]._isinteger() and
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-1999999997 <= vals[1] <= 999999999):
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if outside_decNumber_bounds(vals[0], self.context) or \
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outside_decNumber_bounds(vals[1], self.context):
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#print "Skipping test %s" % s
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return
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else:
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if outside_decNumber_bounds(vals[0], self.context):
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#print "Skipping test %s" % s
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return
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if EXTENDEDERRORTEST and fname not in ('to_sci_string', 'to_eng_string'):
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for error in theirexceptions:
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self.context.traps[error] = 1
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try:
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funct(*vals)
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except error:
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pass
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except Signals, e:
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self.fail("Raised %s in %s when %s disabled" % \
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(e, s, error))
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else:
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self.fail("Did not raise %s in %s" % (error, s))
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self.context.traps[error] = 0
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if DEBUG:
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print "--", self.context
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try:
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result = str(funct(*vals))
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if fname in LOGICAL_FUNCTIONS:
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result = str(int(eval(result))) # 'True', 'False' -> '1', '0'
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except Signals, error:
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self.fail("Raised %s in %s" % (error, s))
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except: #Catch any error long enough to state the test case.
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print "ERROR:", s
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raise
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myexceptions = self.getexceptions()
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self.context.clear_flags()
|
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myexceptions.sort()
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theirexceptions.sort()
|
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self.assertEqual(result, ans,
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'Incorrect answer for ' + s + ' -- got ' + result)
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self.assertEqual(myexceptions, theirexceptions,
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'Incorrect flags set in ' + s + ' -- got ' + str(myexceptions))
|
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return
|
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def getexceptions(self):
|
||
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return [e for e in Signals if self.context.flags[e]]
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def change_precision(self, prec):
|
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self.context.prec = prec
|
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|
|
def change_rounding_method(self, rounding):
|
||
|
|
self.context.rounding = rounding
|
||
|
|
def change_min_exponent(self, exp):
|
||
|
|
self.context.Emin = exp
|
||
|
|
def change_max_exponent(self, exp):
|
||
|
|
self.context.Emax = exp
|
||
|
|
def change_clamp(self, clamp):
|
||
|
|
self.context._clamp = clamp
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
# The following classes test the behaviour of Decimal according to PEP 327
|
||
|
|
|
||
|
|
class DecimalExplicitConstructionTest(unittest.TestCase):
|
||
|
|
'''Unit tests for Explicit Construction cases of Decimal.'''
|
||
|
|
|
||
|
|
def test_explicit_empty(self):
|
||
|
|
self.assertEqual(Decimal(), Decimal("0"))
|
||
|
|
|
||
|
|
def test_explicit_from_None(self):
|
||
|
|
self.assertRaises(TypeError, Decimal, None)
|
||
|
|
|
||
|
|
def test_explicit_from_int(self):
|
||
|
|
|
||
|
|
#positive
|
||
|
|
d = Decimal(45)
|
||
|
|
self.assertEqual(str(d), '45')
|
||
|
|
|
||
|
|
#very large positive
|
||
|
|
d = Decimal(500000123)
|
||
|
|
self.assertEqual(str(d), '500000123')
|
||
|
|
|
||
|
|
#negative
|
||
|
|
d = Decimal(-45)
|
||
|
|
self.assertEqual(str(d), '-45')
|
||
|
|
|
||
|
|
#zero
|
||
|
|
d = Decimal(0)
|
||
|
|
self.assertEqual(str(d), '0')
|
||
|
|
|
||
|
|
def test_explicit_from_string(self):
|
||
|
|
|
||
|
|
#empty
|
||
|
|
self.assertEqual(str(Decimal('')), 'NaN')
|
||
|
|
|
||
|
|
#int
|
||
|
|
self.assertEqual(str(Decimal('45')), '45')
|
||
|
|
|
||
|
|
#float
|
||
|
|
self.assertEqual(str(Decimal('45.34')), '45.34')
|
||
|
|
|
||
|
|
#engineer notation
|
||
|
|
self.assertEqual(str(Decimal('45e2')), '4.5E+3')
|
||
|
|
|
||
|
|
#just not a number
|
||
|
|
self.assertEqual(str(Decimal('ugly')), 'NaN')
|
||
|
|
|
||
|
|
#unicode strings should be permitted
|
||
|
|
self.assertEqual(str(Decimal(u'0E-017')), '0E-17')
|
||
|
|
self.assertEqual(str(Decimal(u'45')), '45')
|
||
|
|
self.assertEqual(str(Decimal(u'-Inf')), '-Infinity')
|
||
|
|
self.assertEqual(str(Decimal(u'NaN123')), 'NaN123')
|
||
|
|
|
||
|
|
def test_explicit_from_tuples(self):
|
||
|
|
|
||
|
|
#zero
|
||
|
|
d = Decimal( (0, (0,), 0) )
|
||
|
|
self.assertEqual(str(d), '0')
|
||
|
|
|
||
|
|
#int
|
||
|
|
d = Decimal( (1, (4, 5), 0) )
|
||
|
|
self.assertEqual(str(d), '-45')
|
||
|
|
|
||
|
|
#float
|
||
|
|
d = Decimal( (0, (4, 5, 3, 4), -2) )
|
||
|
|
self.assertEqual(str(d), '45.34')
|
||
|
|
|
||
|
|
#weird
|
||
|
|
d = Decimal( (1, (4, 3, 4, 9, 1, 3, 5, 3, 4), -25) )
|
||
|
|
self.assertEqual(str(d), '-4.34913534E-17')
|
||
|
|
|
||
|
|
#wrong number of items
|
||
|
|
self.assertRaises(ValueError, Decimal, (1, (4, 3, 4, 9, 1)) )
|
||
|
|
|
||
|
|
#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) )
|
||
|
|
self.assertRaises(ValueError, Decimal, (1, (4, 3, 4, 'a', 1), 2) )
|
||
|
|
|
||
|
|
def test_explicit_from_Decimal(self):
|
||
|
|
|
||
|
|
#positive
|
||
|
|
d = Decimal(45)
|
||
|
|
e = Decimal(d)
|
||
|
|
self.assertEqual(str(e), '45')
|
||
|
|
self.assertNotEqual(id(d), id(e))
|
||
|
|
|
||
|
|
#very large positive
|
||
|
|
d = Decimal(500000123)
|
||
|
|
e = Decimal(d)
|
||
|
|
self.assertEqual(str(e), '500000123')
|
||
|
|
self.assertNotEqual(id(d), id(e))
|
||
|
|
|
||
|
|
#negative
|
||
|
|
d = Decimal(-45)
|
||
|
|
e = Decimal(d)
|
||
|
|
self.assertEqual(str(e), '-45')
|
||
|
|
self.assertNotEqual(id(d), id(e))
|
||
|
|
|
||
|
|
#zero
|
||
|
|
d = Decimal(0)
|
||
|
|
e = Decimal(d)
|
||
|
|
self.assertEqual(str(e), '0')
|
||
|
|
self.assertNotEqual(id(d), id(e))
|
||
|
|
|
||
|
|
def test_explicit_context_create_decimal(self):
|
||
|
|
|
||
|
|
nc = copy.copy(getcontext())
|
||
|
|
nc.prec = 3
|
||
|
|
|
||
|
|
# empty
|
||
|
|
d = Decimal()
|
||
|
|
self.assertEqual(str(d), '0')
|
||
|
|
d = nc.create_decimal()
|
||
|
|
self.assertEqual(str(d), '0')
|
||
|
|
|
||
|
|
# from None
|
||
|
|
self.assertRaises(TypeError, nc.create_decimal, None)
|
||
|
|
|
||
|
|
# from int
|
||
|
|
d = nc.create_decimal(456)
|
||
|
|
self.failUnless(isinstance(d, Decimal))
|
||
|
|
self.assertEqual(nc.create_decimal(45678),
|
||
|
|
nc.create_decimal('457E+2'))
|
||
|
|
|
||
|
|
# from string
|
||
|
|
d = Decimal('456789')
|
||
|
|
self.assertEqual(str(d), '456789')
|
||
|
|
d = nc.create_decimal('456789')
|
||
|
|
self.assertEqual(str(d), '4.57E+5')
|
||
|
|
|
||
|
|
# from tuples
|
||
|
|
d = Decimal( (1, (4, 3, 4, 9, 1, 3, 5, 3, 4), -25) )
|
||
|
|
self.assertEqual(str(d), '-4.34913534E-17')
|
||
|
|
d = nc.create_decimal( (1, (4, 3, 4, 9, 1, 3, 5, 3, 4), -25) )
|
||
|
|
self.assertEqual(str(d), '-4.35E-17')
|
||
|
|
|
||
|
|
# from Decimal
|
||
|
|
prevdec = Decimal(500000123)
|
||
|
|
d = Decimal(prevdec)
|
||
|
|
self.assertEqual(str(d), '500000123')
|
||
|
|
d = nc.create_decimal(prevdec)
|
||
|
|
self.assertEqual(str(d), '5.00E+8')
|
||
|
|
|
||
|
|
|
||
|
|
class DecimalImplicitConstructionTest(unittest.TestCase):
|
||
|
|
'''Unit tests for Implicit Construction cases of Decimal.'''
|
||
|
|
|
||
|
|
def test_implicit_from_None(self):
|
||
|
|
self.assertRaises(TypeError, eval, 'Decimal(5) + None', globals())
|
||
|
|
|
||
|
|
def test_implicit_from_int(self):
|
||
|
|
#normal
|
||
|
|
self.assertEqual(str(Decimal(5) + 45), '50')
|
||
|
|
#exceeding precision
|
||
|
|
self.assertEqual(Decimal(5) + 123456789000, Decimal(123456789000))
|
||
|
|
|
||
|
|
def test_implicit_from_string(self):
|
||
|
|
self.assertRaises(TypeError, eval, 'Decimal(5) + "3"', globals())
|
||
|
|
|
||
|
|
def test_implicit_from_float(self):
|
||
|
|
self.assertRaises(TypeError, eval, 'Decimal(5) + 2.2', globals())
|
||
|
|
|
||
|
|
def test_implicit_from_Decimal(self):
|
||
|
|
self.assertEqual(Decimal(5) + Decimal(45), Decimal(50))
|
||
|
|
|
||
|
|
def test_rop(self):
|
||
|
|
# Allow other classes to be trained to interact with Decimals
|
||
|
|
class E:
|
||
|
|
def __divmod__(self, other):
|
||
|
|
return 'divmod ' + str(other)
|
||
|
|
def __rdivmod__(self, other):
|
||
|
|
return str(other) + ' rdivmod'
|
||
|
|
def __lt__(self, other):
|
||
|
|
return 'lt ' + str(other)
|
||
|
|
def __gt__(self, other):
|
||
|
|
return 'gt ' + str(other)
|
||
|
|
def __le__(self, other):
|
||
|
|
return 'le ' + str(other)
|
||
|
|
def __ge__(self, other):
|
||
|
|
return 'ge ' + str(other)
|
||
|
|
def __eq__(self, other):
|
||
|
|
return 'eq ' + str(other)
|
||
|
|
def __ne__(self, other):
|
||
|
|
return 'ne ' + str(other)
|
||
|
|
|
||
|
|
self.assertEqual(divmod(E(), Decimal(10)), 'divmod 10')
|
||
|
|
self.assertEqual(divmod(Decimal(10), E()), '10 rdivmod')
|
||
|
|
self.assertEqual(eval('Decimal(10) < E()'), 'gt 10')
|
||
|
|
self.assertEqual(eval('Decimal(10) > E()'), 'lt 10')
|
||
|
|
self.assertEqual(eval('Decimal(10) <= E()'), 'ge 10')
|
||
|
|
self.assertEqual(eval('Decimal(10) >= E()'), 'le 10')
|
||
|
|
self.assertEqual(eval('Decimal(10) == E()'), 'eq 10')
|
||
|
|
self.assertEqual(eval('Decimal(10) != E()'), 'ne 10')
|
||
|
|
|
||
|
|
# insert operator methods and then exercise them
|
||
|
|
oplist = [
|
||
|
|
('+', '__add__', '__radd__'),
|
||
|
|
('-', '__sub__', '__rsub__'),
|
||
|
|
('*', '__mul__', '__rmul__'),
|
||
|
|
('%', '__mod__', '__rmod__'),
|
||
|
|
('//', '__floordiv__', '__rfloordiv__'),
|
||
|
|
('**', '__pow__', '__rpow__')
|
||
|
|
]
|
||
|
|
if 1/2 == 0:
|
||
|
|
# testing with classic division, so add __div__
|
||
|
|
oplist.append(('/', '__div__', '__rdiv__'))
|
||
|
|
else:
|
||
|
|
# testing with -Qnew, so add __truediv__
|
||
|
|
oplist.append(('/', '__truediv__', '__rtruediv__'))
|
||
|
|
|
||
|
|
for sym, lop, rop in oplist:
|
||
|
|
setattr(E, lop, lambda self, other: 'str' + lop + str(other))
|
||
|
|
setattr(E, rop, lambda self, other: str(other) + rop + 'str')
|
||
|
|
self.assertEqual(eval('E()' + sym + 'Decimal(10)'),
|
||
|
|
'str' + lop + '10')
|
||
|
|
self.assertEqual(eval('Decimal(10)' + sym + 'E()'),
|
||
|
|
'10' + rop + 'str')
|
||
|
|
|
||
|
|
class DecimalArithmeticOperatorsTest(unittest.TestCase):
|
||
|
|
'''Unit tests for all arithmetic operators, binary and unary.'''
|
||
|
|
|
||
|
|
def test_addition(self):
|
||
|
|
|
||
|
|
d1 = Decimal('-11.1')
|
||
|
|
d2 = Decimal('22.2')
|
||
|
|
|
||
|
|
#two Decimals
|
||
|
|
self.assertEqual(d1+d2, Decimal('11.1'))
|
||
|
|
self.assertEqual(d2+d1, Decimal('11.1'))
|
||
|
|
|
||
|
|
#with other type, left
|
||
|
|
c = d1 + 5
|
||
|
|
self.assertEqual(c, Decimal('-6.1'))
|
||
|
|
self.assertEqual(type(c), type(d1))
|
||
|
|
|
||
|
|
#with other type, right
|
||
|
|
c = 5 + d1
|
||
|
|
self.assertEqual(c, Decimal('-6.1'))
|
||
|
|
self.assertEqual(type(c), type(d1))
|
||
|
|
|
||
|
|
#inline with decimal
|
||
|
|
d1 += d2
|
||
|
|
self.assertEqual(d1, Decimal('11.1'))
|
||
|
|
|
||
|
|
#inline with other type
|
||
|
|
d1 += 5
|
||
|
|
self.assertEqual(d1, Decimal('16.1'))
|
||
|
|
|
||
|
|
def test_subtraction(self):
|
||
|
|
|
||
|
|
d1 = Decimal('-11.1')
|
||
|
|
d2 = Decimal('22.2')
|
||
|
|
|
||
|
|
#two Decimals
|
||
|
|
self.assertEqual(d1-d2, Decimal('-33.3'))
|
||
|
|
self.assertEqual(d2-d1, Decimal('33.3'))
|
||
|
|
|
||
|
|
#with other type, left
|
||
|
|
c = d1 - 5
|
||
|
|
self.assertEqual(c, Decimal('-16.1'))
|
||
|
|
self.assertEqual(type(c), type(d1))
|
||
|
|
|
||
|
|
#with other type, right
|
||
|
|
c = 5 - d1
|
||
|
|
self.assertEqual(c, Decimal('16.1'))
|
||
|
|
self.assertEqual(type(c), type(d1))
|
||
|
|
|
||
|
|
#inline with decimal
|
||
|
|
d1 -= d2
|
||
|
|
self.assertEqual(d1, Decimal('-33.3'))
|
||
|
|
|
||
|
|
#inline with other type
|
||
|
|
d1 -= 5
|
||
|
|
self.assertEqual(d1, Decimal('-38.3'))
|
||
|
|
|
||
|
|
def test_multiplication(self):
|
||
|
|
|
||
|
|
d1 = Decimal('-5')
|
||
|
|
d2 = Decimal('3')
|
||
|
|
|
||
|
|
#two Decimals
|
||
|
|
self.assertEqual(d1*d2, Decimal('-15'))
|
||
|
|
self.assertEqual(d2*d1, Decimal('-15'))
|
||
|
|
|
||
|
|
#with other type, left
|
||
|
|
c = d1 * 5
|
||
|
|
self.assertEqual(c, Decimal('-25'))
|
||
|
|
self.assertEqual(type(c), type(d1))
|
||
|
|
|
||
|
|
#with other type, right
|
||
|
|
c = 5 * d1
|
||
|
|
self.assertEqual(c, Decimal('-25'))
|
||
|
|
self.assertEqual(type(c), type(d1))
|
||
|
|
|
||
|
|
#inline with decimal
|
||
|
|
d1 *= d2
|
||
|
|
self.assertEqual(d1, Decimal('-15'))
|
||
|
|
|
||
|
|
#inline with other type
|
||
|
|
d1 *= 5
|
||
|
|
self.assertEqual(d1, Decimal('-75'))
|
||
|
|
|
||
|
|
def test_division(self):
|
||
|
|
|
||
|
|
d1 = Decimal('-5')
|
||
|
|
d2 = Decimal('2')
|
||
|
|
|
||
|
|
#two Decimals
|
||
|
|
self.assertEqual(d1/d2, Decimal('-2.5'))
|
||
|
|
self.assertEqual(d2/d1, Decimal('-0.4'))
|
||
|
|
|
||
|
|
#with other type, left
|
||
|
|
c = d1 / 4
|
||
|
|
self.assertEqual(c, Decimal('-1.25'))
|
||
|
|
self.assertEqual(type(c), type(d1))
|
||
|
|
|
||
|
|
#with other type, right
|
||
|
|
c = 4 / d1
|
||
|
|
self.assertEqual(c, Decimal('-0.8'))
|
||
|
|
self.assertEqual(type(c), type(d1))
|
||
|
|
|
||
|
|
#inline with decimal
|
||
|
|
d1 /= d2
|
||
|
|
self.assertEqual(d1, Decimal('-2.5'))
|
||
|
|
|
||
|
|
#inline with other type
|
||
|
|
d1 /= 4
|
||
|
|
self.assertEqual(d1, Decimal('-0.625'))
|
||
|
|
|
||
|
|
def test_floor_division(self):
|
||
|
|
|
||
|
|
d1 = Decimal('5')
|
||
|
|
d2 = Decimal('2')
|
||
|
|
|
||
|
|
#two Decimals
|
||
|
|
self.assertEqual(d1//d2, Decimal('2'))
|
||
|
|
self.assertEqual(d2//d1, Decimal('0'))
|
||
|
|
|
||
|
|
#with other type, left
|
||
|
|
c = d1 // 4
|
||
|
|
self.assertEqual(c, Decimal('1'))
|
||
|
|
self.assertEqual(type(c), type(d1))
|
||
|
|
|
||
|
|
#with other type, right
|
||
|
|
c = 7 // d1
|
||
|
|
self.assertEqual(c, Decimal('1'))
|
||
|
|
self.assertEqual(type(c), type(d1))
|
||
|
|
|
||
|
|
#inline with decimal
|
||
|
|
d1 //= d2
|
||
|
|
self.assertEqual(d1, Decimal('2'))
|
||
|
|
|
||
|
|
#inline with other type
|
||
|
|
d1 //= 2
|
||
|
|
self.assertEqual(d1, Decimal('1'))
|
||
|
|
|
||
|
|
def test_powering(self):
|
||
|
|
|
||
|
|
d1 = Decimal('5')
|
||
|
|
d2 = Decimal('2')
|
||
|
|
|
||
|
|
#two Decimals
|
||
|
|
self.assertEqual(d1**d2, Decimal('25'))
|
||
|
|
self.assertEqual(d2**d1, Decimal('32'))
|
||
|
|
|
||
|
|
#with other type, left
|
||
|
|
c = d1 ** 4
|
||
|
|
self.assertEqual(c, Decimal('625'))
|
||
|
|
self.assertEqual(type(c), type(d1))
|
||
|
|
|
||
|
|
#with other type, right
|
||
|
|
c = 7 ** d1
|
||
|
|
self.assertEqual(c, Decimal('16807'))
|
||
|
|
self.assertEqual(type(c), type(d1))
|
||
|
|
|
||
|
|
#inline with decimal
|
||
|
|
d1 **= d2
|
||
|
|
self.assertEqual(d1, Decimal('25'))
|
||
|
|
|
||
|
|
#inline with other type
|
||
|
|
d1 **= 4
|
||
|
|
self.assertEqual(d1, Decimal('390625'))
|
||
|
|
|
||
|
|
def test_module(self):
|
||
|
|
|
||
|
|
d1 = Decimal('5')
|
||
|
|
d2 = Decimal('2')
|
||
|
|
|
||
|
|
#two Decimals
|
||
|
|
self.assertEqual(d1%d2, Decimal('1'))
|
||
|
|
self.assertEqual(d2%d1, Decimal('2'))
|
||
|
|
|
||
|
|
#with other type, left
|
||
|
|
c = d1 % 4
|
||
|
|
self.assertEqual(c, Decimal('1'))
|
||
|
|
self.assertEqual(type(c), type(d1))
|
||
|
|
|
||
|
|
#with other type, right
|
||
|
|
c = 7 % d1
|
||
|
|
self.assertEqual(c, Decimal('2'))
|
||
|
|
self.assertEqual(type(c), type(d1))
|
||
|
|
|
||
|
|
#inline with decimal
|
||
|
|
d1 %= d2
|
||
|
|
self.assertEqual(d1, Decimal('1'))
|
||
|
|
|
||
|
|
#inline with other type
|
||
|
|
d1 %= 4
|
||
|
|
self.assertEqual(d1, Decimal('1'))
|
||
|
|
|
||
|
|
def test_floor_div_module(self):
|
||
|
|
|
||
|
|
d1 = Decimal('5')
|
||
|
|
d2 = Decimal('2')
|
||
|
|
|
||
|
|
#two Decimals
|
||
|
|
(p, q) = divmod(d1, d2)
|
||
|
|
self.assertEqual(p, Decimal('2'))
|
||
|
|
self.assertEqual(q, Decimal('1'))
|
||
|
|
self.assertEqual(type(p), type(d1))
|
||
|
|
self.assertEqual(type(q), type(d1))
|
||
|
|
|
||
|
|
#with other type, left
|
||
|
|
(p, q) = divmod(d1, 4)
|
||
|
|
self.assertEqual(p, Decimal('1'))
|
||
|
|
self.assertEqual(q, Decimal('1'))
|
||
|
|
self.assertEqual(type(p), type(d1))
|
||
|
|
self.assertEqual(type(q), type(d1))
|
||
|
|
|
||
|
|
#with other type, right
|
||
|
|
(p, q) = divmod(7, d1)
|
||
|
|
self.assertEqual(p, Decimal('1'))
|
||
|
|
self.assertEqual(q, Decimal('2'))
|
||
|
|
self.assertEqual(type(p), type(d1))
|
||
|
|
self.assertEqual(type(q), type(d1))
|
||
|
|
|
||
|
|
def test_unary_operators(self):
|
||
|
|
self.assertEqual(+Decimal(45), Decimal(+45)) # +
|
||
|
|
self.assertEqual(-Decimal(45), Decimal(-45)) # -
|
||
|
|
self.assertEqual(abs(Decimal(45)), abs(Decimal(-45))) # abs
|
||
|
|
|
||
|
|
|
||
|
|
# The following are two functions used to test threading in the next class
|
||
|
|
|
||
|
|
def thfunc1(cls):
|
||
|
|
d1 = Decimal(1)
|
||
|
|
d3 = Decimal(3)
|
||
|
|
cls.assertEqual(d1/d3, Decimal('0.333333333'))
|
||
|
|
cls.synchro.wait()
|
||
|
|
cls.assertEqual(d1/d3, Decimal('0.333333333'))
|
||
|
|
cls.finish1.set()
|
||
|
|
return
|
||
|
|
|
||
|
|
def thfunc2(cls):
|
||
|
|
d1 = Decimal(1)
|
||
|
|
d3 = Decimal(3)
|
||
|
|
cls.assertEqual(d1/d3, Decimal('0.333333333'))
|
||
|
|
thiscontext = getcontext()
|
||
|
|
thiscontext.prec = 18
|
||
|
|
cls.assertEqual(d1/d3, Decimal('0.333333333333333333'))
|
||
|
|
cls.synchro.set()
|
||
|
|
cls.finish2.set()
|
||
|
|
return
|
||
|
|
|
||
|
|
|
||
|
|
class DecimalUseOfContextTest(unittest.TestCase):
|
||
|
|
'''Unit tests for Use of Context cases in Decimal.'''
|
||
|
|
|
||
|
|
try:
|
||
|
|
import threading
|
||
|
|
except ImportError:
|
||
|
|
threading = None
|
||
|
|
|
||
|
|
# Take care executing this test from IDLE, there's an issue in threading
|
||
|
|
# that hangs IDLE and I couldn't find it
|
||
|
|
|
||
|
|
def test_threading(self):
|
||
|
|
#Test the "threading isolation" of a Context.
|
||
|
|
|
||
|
|
self.synchro = threading.Event()
|
||
|
|
self.finish1 = threading.Event()
|
||
|
|
self.finish2 = threading.Event()
|
||
|
|
|
||
|
|
th1 = threading.Thread(target=thfunc1, args=(self,))
|
||
|
|
th2 = threading.Thread(target=thfunc2, args=(self,))
|
||
|
|
|
||
|
|
th1.start()
|
||
|
|
th2.start()
|
||
|
|
|
||
|
|
self.finish1.wait()
|
||
|
|
self.finish2.wait()
|
||
|
|
return
|
||
|
|
|
||
|
|
if threading is None:
|
||
|
|
del test_threading
|
||
|
|
|
||
|
|
|
||
|
|
class DecimalUsabilityTest(unittest.TestCase):
|
||
|
|
'''Unit tests for Usability cases of Decimal.'''
|
||
|
|
|
||
|
|
def test_comparison_operators(self):
|
||
|
|
|
||
|
|
da = Decimal('23.42')
|
||
|
|
db = Decimal('23.42')
|
||
|
|
dc = Decimal('45')
|
||
|
|
|
||
|
|
#two Decimals
|
||
|
|
self.failUnless(dc > da)
|
||
|
|
self.failUnless(dc >= da)
|
||
|
|
self.failUnless(da < dc)
|
||
|
|
self.failUnless(da <= dc)
|
||
|
|
self.failUnless(da == db)
|
||
|
|
self.failUnless(da != dc)
|
||
|
|
self.failUnless(da <= db)
|
||
|
|
self.failUnless(da >= db)
|
||
|
|
self.assertEqual(cmp(dc,da), 1)
|
||
|
|
self.assertEqual(cmp(da,dc), -1)
|
||
|
|
self.assertEqual(cmp(da,db), 0)
|
||
|
|
|
||
|
|
#a Decimal and an int
|
||
|
|
self.failUnless(dc > 23)
|
||
|
|
self.failUnless(23 < dc)
|
||
|
|
self.failUnless(dc == 45)
|
||
|
|
self.assertEqual(cmp(dc,23), 1)
|
||
|
|
self.assertEqual(cmp(23,dc), -1)
|
||
|
|
self.assertEqual(cmp(dc,45), 0)
|
||
|
|
|
||
|
|
#a Decimal and uncomparable
|
||
|
|
self.assertNotEqual(da, 'ugly')
|
||
|
|
self.assertNotEqual(da, 32.7)
|
||
|
|
self.assertNotEqual(da, object())
|
||
|
|
self.assertNotEqual(da, object)
|
||
|
|
|
||
|
|
# sortable
|
||
|
|
a = map(Decimal, xrange(100))
|
||
|
|
b = a[:]
|
||
|
|
random.shuffle(a)
|
||
|
|
a.sort()
|
||
|
|
self.assertEqual(a, b)
|
||
|
|
|
||
|
|
# with None
|
||
|
|
self.assertFalse(Decimal(1) < None)
|
||
|
|
self.assertTrue(Decimal(1) > None)
|
||
|
|
|
||
|
|
def test_copy_and_deepcopy_methods(self):
|
||
|
|
d = Decimal('43.24')
|
||
|
|
c = copy.copy(d)
|
||
|
|
self.assertEqual(id(c), id(d))
|
||
|
|
dc = copy.deepcopy(d)
|
||
|
|
self.assertEqual(id(dc), id(d))
|
||
|
|
|
||
|
|
def test_hash_method(self):
|
||
|
|
#just that it's hashable
|
||
|
|
hash(Decimal(23))
|
||
|
|
|
||
|
|
test_values = [Decimal(sign*(2**m + n))
|
||
|
|
for m in [0, 14, 15, 16, 17, 30, 31,
|
||
|
|
32, 33, 62, 63, 64, 65, 66]
|
||
|
|
for n in range(-10, 10)
|
||
|
|
for sign in [-1, 1]]
|
||
|
|
test_values.extend([
|
||
|
|
Decimal("-0"), # zeros
|
||
|
|
Decimal("0.00"),
|
||
|
|
Decimal("-0.000"),
|
||
|
|
Decimal("0E10"),
|
||
|
|
Decimal("-0E12"),
|
||
|
|
Decimal("10.0"), # negative exponent
|
||
|
|
Decimal("-23.00000"),
|
||
|
|
Decimal("1230E100"), # positive exponent
|
||
|
|
Decimal("-4.5678E50"),
|
||
|
|
# a value for which hash(n) != hash(n % (2**64-1))
|
||
|
|
# in Python pre-2.6
|
||
|
|
Decimal(2**64 + 2**32 - 1),
|
||
|
|
# selection of values which fail with the Python 2.6
|
||
|
|
# version of Decimal.__hash__ and the Python 2.5
|
||
|
|
# version of long.__hash__. Included here to prevent
|
||
|
|
# an accidental backport of the Decimal.__hash__ from
|
||
|
|
# Python 2.6 to Python 2.5.
|
||
|
|
Decimal("1.634E100"),
|
||
|
|
Decimal("90.697E100"),
|
||
|
|
Decimal("188.83E100"),
|
||
|
|
Decimal("1652.9E100"),
|
||
|
|
Decimal("56531E100"),
|
||
|
|
])
|
||
|
|
|
||
|
|
# check that hash(d) == hash(int(d)) for integral values
|
||
|
|
for value in test_values:
|
||
|
|
self.assertEqual(hash(value), hash(int(value)))
|
||
|
|
|
||
|
|
#the same hash that to an int
|
||
|
|
self.assertEqual(hash(Decimal(23)), hash(23))
|
||
|
|
self.assertRaises(TypeError, hash, Decimal('NaN'))
|
||
|
|
self.assert_(hash(Decimal('Inf')))
|
||
|
|
self.assert_(hash(Decimal('-Inf')))
|
||
|
|
|
||
|
|
# check that the value of the hash doesn't depend on the
|
||
|
|
# current context (issue #1757)
|
||
|
|
c = getcontext()
|
||
|
|
old_precision = c.prec
|
||
|
|
x = Decimal("123456789.1")
|
||
|
|
|
||
|
|
c.prec = 6
|
||
|
|
h1 = hash(x)
|
||
|
|
c.prec = 10
|
||
|
|
h2 = hash(x)
|
||
|
|
c.prec = 16
|
||
|
|
h3 = hash(x)
|
||
|
|
|
||
|
|
self.assertEqual(h1, h2)
|
||
|
|
self.assertEqual(h1, h3)
|
||
|
|
c.prec = old_precision
|
||
|
|
|
||
|
|
def test_min_and_max_methods(self):
|
||
|
|
|
||
|
|
d1 = Decimal('15.32')
|
||
|
|
d2 = Decimal('28.5')
|
||
|
|
l1 = 15
|
||
|
|
l2 = 28
|
||
|
|
|
||
|
|
#between Decimals
|
||
|
|
self.failUnless(min(d1,d2) is d1)
|
||
|
|
self.failUnless(min(d2,d1) is d1)
|
||
|
|
self.failUnless(max(d1,d2) is d2)
|
||
|
|
self.failUnless(max(d2,d1) is d2)
|
||
|
|
|
||
|
|
#between Decimal and long
|
||
|
|
self.failUnless(min(d1,l2) is d1)
|
||
|
|
self.failUnless(min(l2,d1) is d1)
|
||
|
|
self.failUnless(max(l1,d2) is d2)
|
||
|
|
self.failUnless(max(d2,l1) is d2)
|
||
|
|
|
||
|
|
def test_as_nonzero(self):
|
||
|
|
#as false
|
||
|
|
self.failIf(Decimal(0))
|
||
|
|
#as true
|
||
|
|
self.failUnless(Decimal('0.372'))
|
||
|
|
|
||
|
|
def test_tostring_methods(self):
|
||
|
|
#Test str and repr methods.
|
||
|
|
|
||
|
|
d = Decimal('15.32')
|
||
|
|
self.assertEqual(str(d), '15.32') # str
|
||
|
|
self.assertEqual(repr(d), 'Decimal("15.32")') # repr
|
||
|
|
|
||
|
|
# result type of string methods should be str, not unicode
|
||
|
|
unicode_inputs = [u'123.4', u'0.5E2', u'Infinity', u'sNaN',
|
||
|
|
u'-0.0E100', u'-NaN001', u'-Inf']
|
||
|
|
|
||
|
|
for u in unicode_inputs:
|
||
|
|
d = Decimal(u)
|
||
|
|
self.assertEqual(type(str(d)), str)
|
||
|
|
self.assertEqual(type(repr(d)), str)
|
||
|
|
self.assertEqual(type(d.to_eng_string()), str)
|
||
|
|
|
||
|
|
def test_tonum_methods(self):
|
||
|
|
#Test float, int and long methods.
|
||
|
|
|
||
|
|
d1 = Decimal('66')
|
||
|
|
d2 = Decimal('15.32')
|
||
|
|
|
||
|
|
#int
|
||
|
|
self.assertEqual(int(d1), 66)
|
||
|
|
self.assertEqual(int(d2), 15)
|
||
|
|
|
||
|
|
#long
|
||
|
|
self.assertEqual(long(d1), 66)
|
||
|
|
self.assertEqual(long(d2), 15)
|
||
|
|
|
||
|
|
#float
|
||
|
|
self.assertEqual(float(d1), 66)
|
||
|
|
self.assertEqual(float(d2), 15.32)
|
||
|
|
|
||
|
|
def test_eval_round_trip(self):
|
||
|
|
|
||
|
|
#with zero
|
||
|
|
d = Decimal( (0, (0,), 0) )
|
||
|
|
self.assertEqual(d, eval(repr(d)))
|
||
|
|
|
||
|
|
#int
|
||
|
|
d = Decimal( (1, (4, 5), 0) )
|
||
|
|
self.assertEqual(d, eval(repr(d)))
|
||
|
|
|
||
|
|
#float
|
||
|
|
d = Decimal( (0, (4, 5, 3, 4), -2) )
|
||
|
|
self.assertEqual(d, eval(repr(d)))
|
||
|
|
|
||
|
|
#weird
|
||
|
|
d = Decimal( (1, (4, 3, 4, 9, 1, 3, 5, 3, 4), -25) )
|
||
|
|
self.assertEqual(d, eval(repr(d)))
|
||
|
|
|
||
|
|
def test_as_tuple(self):
|
||
|
|
|
||
|
|
#with zero
|
||
|
|
d = Decimal(0)
|
||
|
|
self.assertEqual(d.as_tuple(), (0, (0,), 0) )
|
||
|
|
|
||
|
|
#int
|
||
|
|
d = Decimal(-45)
|
||
|
|
self.assertEqual(d.as_tuple(), (1, (4, 5), 0) )
|
||
|
|
|
||
|
|
#complicated string
|
||
|
|
d = Decimal("-4.34913534E-17")
|
||
|
|
self.assertEqual(d.as_tuple(), (1, (4, 3, 4, 9, 1, 3, 5, 3, 4), -25) )
|
||
|
|
|
||
|
|
#inf
|
||
|
|
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.
|
||
|
|
|
||
|
|
d1 = Decimal('-25e55')
|
||
|
|
b1 = Decimal('-25e55')
|
||
|
|
d2 = Decimal('33e+33')
|
||
|
|
b2 = Decimal('33e+33')
|
||
|
|
|
||
|
|
def checkSameDec(operation, useOther=False):
|
||
|
|
if useOther:
|
||
|
|
eval("d1." + operation + "(d2)")
|
||
|
|
self.assertEqual(d1._sign, b1._sign)
|
||
|
|
self.assertEqual(d1._int, b1._int)
|
||
|
|
self.assertEqual(d1._exp, b1._exp)
|
||
|
|
self.assertEqual(d2._sign, b2._sign)
|
||
|
|
self.assertEqual(d2._int, b2._int)
|
||
|
|
self.assertEqual(d2._exp, b2._exp)
|
||
|
|
else:
|
||
|
|
eval("d1." + operation + "()")
|
||
|
|
self.assertEqual(d1._sign, b1._sign)
|
||
|
|
self.assertEqual(d1._int, b1._int)
|
||
|
|
self.assertEqual(d1._exp, b1._exp)
|
||
|
|
return
|
||
|
|
|
||
|
|
Decimal(d1)
|
||
|
|
self.assertEqual(d1._sign, b1._sign)
|
||
|
|
self.assertEqual(d1._int, b1._int)
|
||
|
|
self.assertEqual(d1._exp, b1._exp)
|
||
|
|
|
||
|
|
checkSameDec("__abs__")
|
||
|
|
checkSameDec("__add__", True)
|
||
|
|
checkSameDec("__div__", True)
|
||
|
|
checkSameDec("__divmod__", True)
|
||
|
|
checkSameDec("__cmp__", True)
|
||
|
|
checkSameDec("__float__")
|
||
|
|
checkSameDec("__floordiv__", True)
|
||
|
|
checkSameDec("__hash__")
|
||
|
|
checkSameDec("__int__")
|
||
|
|
checkSameDec("__long__")
|
||
|
|
checkSameDec("__mod__", True)
|
||
|
|
checkSameDec("__mul__", True)
|
||
|
|
checkSameDec("__neg__")
|
||
|
|
checkSameDec("__nonzero__")
|
||
|
|
checkSameDec("__pos__")
|
||
|
|
checkSameDec("__pow__", True)
|
||
|
|
checkSameDec("__radd__", True)
|
||
|
|
checkSameDec("__rdiv__", True)
|
||
|
|
checkSameDec("__rdivmod__", True)
|
||
|
|
checkSameDec("__repr__")
|
||
|
|
checkSameDec("__rfloordiv__", True)
|
||
|
|
checkSameDec("__rmod__", True)
|
||
|
|
checkSameDec("__rmul__", True)
|
||
|
|
checkSameDec("__rpow__", True)
|
||
|
|
checkSameDec("__rsub__", True)
|
||
|
|
checkSameDec("__str__")
|
||
|
|
checkSameDec("__sub__", True)
|
||
|
|
checkSameDec("__truediv__", True)
|
||
|
|
checkSameDec("adjusted")
|
||
|
|
checkSameDec("as_tuple")
|
||
|
|
checkSameDec("compare", True)
|
||
|
|
checkSameDec("max", True)
|
||
|
|
checkSameDec("min", True)
|
||
|
|
checkSameDec("normalize")
|
||
|
|
checkSameDec("quantize", True)
|
||
|
|
checkSameDec("remainder_near", True)
|
||
|
|
checkSameDec("same_quantum", True)
|
||
|
|
checkSameDec("sqrt")
|
||
|
|
checkSameDec("to_eng_string")
|
||
|
|
checkSameDec("to_integral")
|
||
|
|
|
||
|
|
def test_subclassing(self):
|
||
|
|
# Different behaviours when subclassing Decimal
|
||
|
|
|
||
|
|
class MyDecimal(Decimal):
|
||
|
|
pass
|
||
|
|
|
||
|
|
d1 = MyDecimal(1)
|
||
|
|
d2 = MyDecimal(2)
|
||
|
|
d = d1 + d2
|
||
|
|
self.assertTrue(type(d) is Decimal)
|
||
|
|
|
||
|
|
d = d1.max(d2)
|
||
|
|
self.assertTrue(type(d) is Decimal)
|
||
|
|
|
||
|
|
def test_implicit_context(self):
|
||
|
|
# Check results when context given implicitly. (Issue 2478)
|
||
|
|
c = getcontext()
|
||
|
|
self.assertEqual(str(Decimal(0).sqrt()),
|
||
|
|
str(c.sqrt(Decimal(0))))
|
||
|
|
|
||
|
|
|
||
|
|
class DecimalPythonAPItests(unittest.TestCase):
|
||
|
|
|
||
|
|
def test_pickle(self):
|
||
|
|
d = Decimal('-3.141590000')
|
||
|
|
p = pickle.dumps(d)
|
||
|
|
e = pickle.loads(p)
|
||
|
|
self.assertEqual(d, e)
|
||
|
|
|
||
|
|
def test_int(self):
|
||
|
|
for x in range(-250, 250):
|
||
|
|
s = '%0.2f' % (x / 100.0)
|
||
|
|
# should work the same as for floats
|
||
|
|
self.assertEqual(int(Decimal(s)), int(float(s)))
|
||
|
|
# should work the same as to_integral in the ROUND_DOWN mode
|
||
|
|
d = Decimal(s)
|
||
|
|
r = d.to_integral(ROUND_DOWN)
|
||
|
|
self.assertEqual(Decimal(int(d)), r)
|
||
|
|
|
||
|
|
class ContextAPItests(unittest.TestCase):
|
||
|
|
|
||
|
|
def test_pickle(self):
|
||
|
|
c = Context()
|
||
|
|
e = pickle.loads(pickle.dumps(c))
|
||
|
|
for k in vars(c):
|
||
|
|
v1 = vars(c)[k]
|
||
|
|
v2 = vars(e)[k]
|
||
|
|
self.assertEqual(v1, v2)
|
||
|
|
|
||
|
|
def test_equality_with_other_types(self):
|
||
|
|
self.assert_(Decimal(10) in ['a', 1.0, Decimal(10), (1,2), {}])
|
||
|
|
self.assert_(Decimal(10) not in ['a', 1.0, (1,2), {}])
|
||
|
|
|
||
|
|
def test_copy(self):
|
||
|
|
# All copies should be deep
|
||
|
|
c = Context()
|
||
|
|
d = c.copy()
|
||
|
|
self.assertNotEqual(id(c), id(d))
|
||
|
|
self.assertNotEqual(id(c.flags), id(d.flags))
|
||
|
|
self.assertNotEqual(id(c.traps), id(d.traps))
|
||
|
|
|
||
|
|
class WithStatementTest(unittest.TestCase):
|
||
|
|
# Can't do these as docstrings until Python 2.6
|
||
|
|
# as doctest can't handle __future__ statements
|
||
|
|
|
||
|
|
def test_localcontext(self):
|
||
|
|
# Use a copy of the current context in the block
|
||
|
|
orig_ctx = getcontext()
|
||
|
|
with localcontext() as enter_ctx:
|
||
|
|
set_ctx = getcontext()
|
||
|
|
final_ctx = getcontext()
|
||
|
|
self.assert_(orig_ctx is final_ctx, 'did not restore context correctly')
|
||
|
|
self.assert_(orig_ctx is not set_ctx, 'did not copy the context')
|
||
|
|
self.assert_(set_ctx is enter_ctx, '__enter__ returned wrong context')
|
||
|
|
|
||
|
|
def test_localcontextarg(self):
|
||
|
|
# Use a copy of the supplied context in the block
|
||
|
|
orig_ctx = getcontext()
|
||
|
|
new_ctx = Context(prec=42)
|
||
|
|
with localcontext(new_ctx) as enter_ctx:
|
||
|
|
set_ctx = getcontext()
|
||
|
|
final_ctx = getcontext()
|
||
|
|
self.assert_(orig_ctx is final_ctx, 'did not restore context correctly')
|
||
|
|
self.assert_(set_ctx.prec == new_ctx.prec, 'did not set correct context')
|
||
|
|
self.assert_(new_ctx is not set_ctx, 'did not copy the context')
|
||
|
|
self.assert_(set_ctx is enter_ctx, '__enter__ returned wrong context')
|
||
|
|
|
||
|
|
class ContextFlags(unittest.TestCase):
|
||
|
|
def test_flags_irrelevant(self):
|
||
|
|
# check that the result (numeric result + flags raised) of an
|
||
|
|
# arithmetic operation doesn't depend on the current flags
|
||
|
|
|
||
|
|
context = Context(prec=9, Emin = -999999999, Emax = 999999999,
|
||
|
|
rounding=ROUND_HALF_EVEN, traps=[], flags=[])
|
||
|
|
|
||
|
|
# operations that raise various flags, in the form (function, arglist)
|
||
|
|
operations = [
|
||
|
|
(context._apply, [Decimal("100E-1000000009")]),
|
||
|
|
(context.sqrt, [Decimal(2)]),
|
||
|
|
(context.add, [Decimal("1.23456789"), Decimal("9.87654321")]),
|
||
|
|
(context.multiply, [Decimal("1.23456789"), Decimal("9.87654321")]),
|
||
|
|
(context.subtract, [Decimal("1.23456789"), Decimal("9.87654321")]),
|
||
|
|
]
|
||
|
|
|
||
|
|
# try various flags individually, then a whole lot at once
|
||
|
|
flagsets = [[Inexact], [Rounded], [Underflow], [Clamped], [Subnormal],
|
||
|
|
[Inexact, Rounded, Underflow, Clamped, Subnormal]]
|
||
|
|
|
||
|
|
for fn, args in operations:
|
||
|
|
# find answer and flags raised using a clean context
|
||
|
|
context.clear_flags()
|
||
|
|
ans = fn(*args)
|
||
|
|
flags = [k for k, v in context.flags.items() if v]
|
||
|
|
|
||
|
|
for extra_flags in flagsets:
|
||
|
|
# set flags, before calling operation
|
||
|
|
context.clear_flags()
|
||
|
|
for flag in extra_flags:
|
||
|
|
context._raise_error(flag)
|
||
|
|
new_ans = fn(*args)
|
||
|
|
|
||
|
|
# flags that we expect to be set after the operation
|
||
|
|
expected_flags = list(flags)
|
||
|
|
for flag in extra_flags:
|
||
|
|
if flag not in expected_flags:
|
||
|
|
expected_flags.append(flag)
|
||
|
|
expected_flags.sort()
|
||
|
|
|
||
|
|
# flags we actually got
|
||
|
|
new_flags = [k for k,v in context.flags.items() if v]
|
||
|
|
new_flags.sort()
|
||
|
|
|
||
|
|
self.assertEqual(ans, new_ans,
|
||
|
|
"operation produces different answers depending on flags set: " +
|
||
|
|
"expected %s, got %s." % (ans, new_ans))
|
||
|
|
self.assertEqual(new_flags, expected_flags,
|
||
|
|
"operation raises different flags depending on flags set: " +
|
||
|
|
"expected %s, got %s" % (expected_flags, new_flags))
|
||
|
|
|
||
|
|
def test_main(arith=False, verbose=None, todo_tests=None, debug=None):
|
||
|
|
""" Execute the tests.
|
||
|
|
|
||
|
|
Runs all arithmetic tests if arith is True or if the "decimal" resource
|
||
|
|
is enabled in regrtest.py
|
||
|
|
"""
|
||
|
|
|
||
|
|
init()
|
||
|
|
global TEST_ALL, DEBUG
|
||
|
|
TEST_ALL = arith or is_resource_enabled('decimal')
|
||
|
|
DEBUG = debug
|
||
|
|
|
||
|
|
if todo_tests is None:
|
||
|
|
test_classes = [
|
||
|
|
DecimalExplicitConstructionTest,
|
||
|
|
DecimalImplicitConstructionTest,
|
||
|
|
DecimalArithmeticOperatorsTest,
|
||
|
|
DecimalUseOfContextTest,
|
||
|
|
DecimalUsabilityTest,
|
||
|
|
DecimalPythonAPItests,
|
||
|
|
ContextAPItests,
|
||
|
|
DecimalTest,
|
||
|
|
WithStatementTest,
|
||
|
|
ContextFlags
|
||
|
|
]
|
||
|
|
else:
|
||
|
|
test_classes = [DecimalTest]
|
||
|
|
|
||
|
|
# Dynamically build custom test definition for each file in the test
|
||
|
|
# directory and add the definitions to the DecimalTest class. This
|
||
|
|
# procedure insures that new files do not get skipped.
|
||
|
|
for filename in os.listdir(directory):
|
||
|
|
if '.decTest' not in filename or filename.startswith("."):
|
||
|
|
continue
|
||
|
|
head, tail = filename.split('.')
|
||
|
|
if todo_tests is not None and head not in todo_tests:
|
||
|
|
continue
|
||
|
|
tester = lambda self, f=filename: self.eval_file(directory + f)
|
||
|
|
setattr(DecimalTest, 'test_' + head, tester)
|
||
|
|
del filename, head, tail, tester
|
||
|
|
|
||
|
|
|
||
|
|
try:
|
||
|
|
run_unittest(*test_classes)
|
||
|
|
if todo_tests is None:
|
||
|
|
import decimal as DecimalModule
|
||
|
|
run_doctest(DecimalModule, verbose)
|
||
|
|
finally:
|
||
|
|
setcontext(ORIGINAL_CONTEXT)
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
import optparse
|
||
|
|
p = optparse.OptionParser("test_decimal.py [--debug] [{--skip | test1 [test2 [...]]}]")
|
||
|
|
p.add_option('--debug', '-d', action='store_true', help='shows the test number and context before each test')
|
||
|
|
p.add_option('--skip', '-s', action='store_true', help='skip over 90% of the arithmetic tests')
|
||
|
|
(opt, args) = p.parse_args()
|
||
|
|
|
||
|
|
if opt.skip:
|
||
|
|
test_main(arith=False, verbose=True)
|
||
|
|
elif args:
|
||
|
|
test_main(arith=True, verbose=True, todo_tests=args, debug=opt.debug)
|
||
|
|
else:
|
||
|
|
test_main(arith=True, verbose=True)
|