xorn/tests/python/fixednum.py

   1 # Copyright (C) 2013-2020 Roland Lutz
   2 #
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 2 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program; if not, write to the Free Software Foundation,
  15 # Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  16
  17 import xorn.fixednum
  18
  19 def throws(fun, *args):
  20     try:
  21         fun(*args)
  22     except Exception as e:
  23         return type(e)
  24
  25 assert throws(xorn.fixednum.format, 42., 0) == TypeError
  26 assert throws(xorn.fixednum.format, 42, None) == TypeError
  27 assert throws(xorn.fixednum.format, 42, -1) == ValueError
  28
  29 assert throws(xorn.fixednum.parse, 42, 0) == TypeError
  30 assert throws(xorn.fixednum.parse, 42., 0) == TypeError
  31 assert throws(xorn.fixednum.parse, '42', None) == TypeError
  32 assert throws(xorn.fixednum.parse, '42', -1) == ValueError
  33
  34 assert throws(xorn.fixednum.parse, '', 0) == ValueError
  35 assert throws(xorn.fixednum.parse, '.42', 0) == ValueError
  36 assert throws(xorn.fixednum.parse, '4.2', 0) == ValueError
  37 assert throws(xorn.fixednum.parse, ':42', 0) == ValueError
  38 assert throws(xorn.fixednum.parse, 'x', 0) == ValueError
  39
  40 assert throws(xorn.fixednum.parse, '', 3) == ValueError
  41 assert throws(xorn.fixednum.parse, '.4242', 3) == ValueError
  42 assert throws(xorn.fixednum.parse, ':42', 3) == ValueError
  43 assert throws(xorn.fixednum.parse, 'x', 3) == ValueError
  44 assert throws(xorn.fixednum.parse, '.x', 3) == ValueError
  45
  46 assert xorn.fixednum.format(0, 0) == '0'
  47 assert xorn.fixednum.format(0, 3) == '0'
  48 assert str(xorn.fixednum.parse('0', 0)) == '0'
  49 assert str(xorn.fixednum.parse('0', 3)) == '0'
  50 assert str(xorn.fixednum.parse('-0', 0)) == '0'
  51 assert str(xorn.fixednum.parse('-0', 3)) == '0'
  52
  53 for x, decimal_digits, s in [
  54         (42, 0, '42'),
  55         (42, 1, '4.2'),
  56         (42, 2, '.42'),
  57         (42, 3, '.042'),
  58         (42, 4, '.0042'),
  59         (42, 5, '.00042'),
  60
  61         (-42, 0, '-42'),
  62         (-42, 1, '-4.2'),
  63         (-42, 2, '-.42'),
  64
  65         (12345, 0, '12345'),
  66         (12345, 1, '1234.5'),
  67         (12345, 2, '123.45'),
  68         (12345, 3, '12.345'),
  69         (12345, 4, '1.2345'),
  70         (12345, 5, '.12345'),
  71
  72         (-12345, 0, '-12345'),
  73         (-12345, 1, '-1234.5'),
  74         (-12345, 2, '-123.45'),
  75         (-12345, 3, '-12.345'),
  76         (-12345, 4, '-1.2345'),
  77         (-12345, 5, '-.12345'),
  78
  79         (-42000, 3, '-42'),
  80         (-42090, 3, '-42.09'),
  81         (-90, 3, '-.09')]:
  82     assert xorn.fixednum.format(x, decimal_digits) == s
  83     assert xorn.fixednum.parse(s, decimal_digits) == x