Lib/test/test_structmembers.py

   1 from _testcapi import _test_structmembersType, \
   2     CHAR_MAX, CHAR_MIN, UCHAR_MAX, \
   3     SHRT_MAX, SHRT_MIN, USHRT_MAX, \
   4     INT_MAX, INT_MIN, UINT_MAX, \
   5     LONG_MAX, LONG_MIN, ULONG_MAX, \
   6     LLONG_MAX, LLONG_MIN, ULLONG_MAX
   7
   8 import unittest
   9 from test import test_support
  10
  11 ts=_test_structmembersType(False, 1, 2, 3, 4, 5, 6, 7, 8,
  12                           9.99999, 10.1010101010, "hi")
  13
  14 class ReadWriteTests(unittest.TestCase):
  15
  16     def test_bool(self):
  17         ts.T_BOOL = True
  18         self.assertEquals(ts.T_BOOL, True)
  19         ts.T_BOOL = False
  20         self.assertEquals(ts.T_BOOL, False)
  21         self.assertRaises(TypeError, setattr, ts, 'T_BOOL', 1)
  22
  23     def test_byte(self):
  24         ts.T_BYTE = CHAR_MAX
  25         self.assertEquals(ts.T_BYTE, CHAR_MAX)
  26         ts.T_BYTE = CHAR_MIN
  27         self.assertEquals(ts.T_BYTE, CHAR_MIN)
  28         ts.T_UBYTE = UCHAR_MAX
  29         self.assertEquals(ts.T_UBYTE, UCHAR_MAX)
  30
  31     def test_short(self):
  32         ts.T_SHORT = SHRT_MAX
  33         self.assertEquals(ts.T_SHORT, SHRT_MAX)
  34         ts.T_SHORT = SHRT_MIN
  35         self.assertEquals(ts.T_SHORT, SHRT_MIN)
  36         ts.T_USHORT = USHRT_MAX
  37         self.assertEquals(ts.T_USHORT, USHRT_MAX)
  38
  39     def test_int(self):
  40         ts.T_INT = INT_MAX
  41         self.assertEquals(ts.T_INT, INT_MAX)
  42         ts.T_INT = INT_MIN
  43         self.assertEquals(ts.T_INT, INT_MIN)
  44         ts.T_UINT = UINT_MAX
  45         self.assertEquals(ts.T_UINT, UINT_MAX)
  46
  47     def test_long(self):
  48         ts.T_LONG = LONG_MAX
  49         self.assertEquals(ts.T_LONG, LONG_MAX)
  50         ts.T_LONG = LONG_MIN
  51         self.assertEquals(ts.T_LONG, LONG_MIN)
  52         ts.T_ULONG = ULONG_MAX
  53         self.assertEquals(ts.T_ULONG, ULONG_MAX)
  54
  55     @unittest.skipUnless(hasattr(ts, "T_LONGLONG"), "long long not present")
  56     def test_longlong(self):
  57         ts.T_LONGLONG = LLONG_MAX
  58         self.assertEquals(ts.T_LONGLONG, LLONG_MAX)
  59         ts.T_LONGLONG = LLONG_MIN
  60         self.assertEquals(ts.T_LONGLONG, LLONG_MIN)
  61
  62         ts.T_ULONGLONG = ULLONG_MAX
  63         self.assertEquals(ts.T_ULONGLONG, ULLONG_MAX)
  64
  65         ## make sure these will accept a plain int as well as a long
  66         ts.T_LONGLONG = 3
  67         self.assertEquals(ts.T_LONGLONG, 3)
  68         ts.T_ULONGLONG = 4
  69         self.assertEquals(ts.T_ULONGLONG, 4)
  70
  71     def test_inplace_string(self):
  72         self.assertEquals(ts.T_STRING_INPLACE, "hi")
  73         self.assertRaises(TypeError, setattr, ts, "T_STRING_INPLACE", "s")
  74         self.assertRaises(TypeError, delattr, ts, "T_STRING_INPLACE")
  75
  76
  77 class TestWarnings(unittest.TestCase):
  78
  79     def test_byte_max(self):
  80         with test_support.check_warnings(('', RuntimeWarning)):
  81             ts.T_BYTE = CHAR_MAX+1
  82
  83     def test_byte_min(self):
  84         with test_support.check_warnings(('', RuntimeWarning)):
  85             ts.T_BYTE = CHAR_MIN-1
  86
  87     def test_ubyte_max(self):
  88         with test_support.check_warnings(('', RuntimeWarning)):
  89             ts.T_UBYTE = UCHAR_MAX+1
  90
  91     def test_short_max(self):
  92         with test_support.check_warnings(('', RuntimeWarning)):
  93             ts.T_SHORT = SHRT_MAX+1
  94
  95     def test_short_min(self):
  96         with test_support.check_warnings(('', RuntimeWarning)):
  97             ts.T_SHORT = SHRT_MIN-1
  98
  99     def test_ushort_max(self):
 100         with test_support.check_warnings(('', RuntimeWarning)):
 101             ts.T_USHORT = USHRT_MAX+1
 102
 103
 104 def test_main(verbose=None):
 105     test_support.run_unittest(__name__)
 106
 107 if __name__ == "__main__":
 108     test_main(verbose=True)