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