ceph/src/boost/libs/python/test/test_builtin_converters.py

   1 # Copyright David Abrahams 2004. Distributed under the Boost
   2 # Software License, Version 1.0. (See accompanying
   3 # file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   4 import sys
   5 if (sys.version_info.major >= 3):
   6     long = int
   7 r"""
   8 >>> from builtin_converters_ext import *
   9
  10 # Provide values for integer converter tests
  11 >>> def _signed_values(s):
  12 ...     base = 2 ** (8 * s - 1)
  13 ...     return [[-base, -1, 1, base - 1], [-base - 1, base]]
  14 >>> def _unsigned_values(s):
  15 ...     base = 2 ** (8 * s)
  16 ...     return [[1, base - 1], [long(-1), -1, base]]
  17
  18 # Wrappers to simplify tests
  19 >>> def should_pass(method, values):
  20 ...     result = map(method, values[0])
  21 ...     if result != values[0]:
  22 ...         print("Got %s but expected %s" % (result, values[0]))
  23 >>> def test_overflow(method, values):
  24 ...     for v in values[1]:
  25 ...         try: method(v)
  26 ...         except OverflowError: pass
  27 ...         else: print("OverflowError expected")
  28
  29 # Synthesize idendity functions in case long long not supported
  30 >>> if not 'rewrap_value_long_long' in dir():
  31 ...     def rewrap_value_long_long(x): return long(x)
  32 ...     def rewrap_value_unsigned_long_long(x): return long(x)
  33 ...     def rewrap_const_reference_long_long(x): return long(x)
  34 ...     def rewrap_const_reference_unsigned_long_long(x): return long(x)
  35 >>> if not 'long_long_size' in dir():
  36 ...     def long_long_size(): return long_size()
  37
  38 >>> try: bool_exists = bool
  39 ... except: pass
  40 ... else:
  41 ...     rewrap_value_bool(True)
  42 ...     rewrap_value_bool(False)
  43 True
  44 False
  45
  46 >>> rewrap_value_bool(None)
  47 0
  48 >>> rewrap_value_bool(0)
  49 0
  50 >>> rewrap_value_bool(33)
  51 1
  52 >>> rewrap_value_char('x')
  53 'x'
  54
  55   Note that there's currently silent truncation of strings passed to
  56   char arguments.
  57
  58 >>> rewrap_value_char('xy')
  59 'x'
  60 >>> rewrap_value_signed_char(42)
  61 42
  62 >>> rewrap_value_unsigned_char(42)
  63 42
  64 >>> rewrap_value_int(42)
  65 42
  66 >>> rewrap_value_unsigned_int(42)
  67 42
  68 >>> rewrap_value_short(42)
  69 42
  70 >>> rewrap_value_unsigned_short(42)
  71 42
  72 >>> rewrap_value_long(42)
  73 42
  74 >>> rewrap_value_unsigned_long(42)
  75 42
  76
  77     test unsigned long values which don't fit in a signed long.
  78     strip any 'L' characters in case the platform has > 32 bit longs
  79
  80 >>> hex(rewrap_value_unsigned_long(0x80000001L)).replace('L','')
  81 '0x80000001'
  82
  83 >>> rewrap_value_long_long(42) == 42
  84 True
  85 >>> rewrap_value_unsigned_long_long(42) == 42
  86 True
  87
  88    show that we have range checking.
  89
  90 >>> should_pass(rewrap_value_signed_char, _signed_values(char_size()))
  91 >>> should_pass(rewrap_value_short, _signed_values(short_size()))
  92 >>> should_pass(rewrap_value_int, _signed_values(int_size()))
  93 >>> should_pass(rewrap_value_long, _signed_values(long_size()))
  94 >>> should_pass(rewrap_value_long_long, _signed_values(long_long_size()))
  95
  96 >>> should_pass(rewrap_value_unsigned_char, _unsigned_values(char_size()))
  97 >>> should_pass(rewrap_value_unsigned_short, _unsigned_values(short_size()))
  98 >>> should_pass(rewrap_value_unsigned_int, _unsigned_values(int_size()))
  99 >>> should_pass(rewrap_value_unsigned_long, _unsigned_values(long_size()))
 100 >>> should_pass(rewrap_value_unsigned_long_long,
 101 ...     _unsigned_values(long_long_size()))
 102
 103 >>> test_overflow(rewrap_value_signed_char, _signed_values(char_size()))
 104 >>> test_overflow(rewrap_value_short, _signed_values(short_size()))
 105 >>> test_overflow(rewrap_value_int, _signed_values(int_size()))
 106 >>> test_overflow(rewrap_value_long, _signed_values(long_size()))
 107 >>> test_overflow(rewrap_value_long_long, _signed_values(long_long_size()))
 108
 109 >>> test_overflow(rewrap_value_unsigned_char, _unsigned_values(char_size()))
 110 >>> test_overflow(rewrap_value_unsigned_short, _unsigned_values(short_size()))
 111 >>> test_overflow(rewrap_value_unsigned_int, _unsigned_values(int_size()))
 112 >>> test_overflow(rewrap_value_unsigned_long, _unsigned_values(long_size()))
 113
 114 # Exceptionally for PyLong_AsUnsignedLongLong(), a negative value raises
 115 # TypeError on Python versions prior to 2.7
 116 >>> for v in _unsigned_values(long_long_size())[1]:
 117 ...     try: rewrap_value_unsigned_long_long(v)
 118 ...     except (OverflowError, TypeError): pass
 119 ...     else: print("OverflowError or TypeError expected")
 120
 121 >>> assert abs(rewrap_value_float(4.2) - 4.2) < .000001
 122 >>> rewrap_value_double(4.2) - 4.2
 123 0.0
 124 >>> rewrap_value_long_double(4.2) - 4.2
 125 0.0
 126
 127 >>> assert abs(rewrap_value_complex_float(4+.2j) - (4+.2j)) < .000001
 128 >>> assert abs(rewrap_value_complex_double(4+.2j) - (4+.2j)) < .000001
 129 >>> assert abs(rewrap_value_complex_long_double(4+.2j) - (4+.2j)) < .000001
 130
 131 >>> rewrap_value_cstring('hello, world')
 132 'hello, world'
 133 >>> rewrap_value_string('yo, wassup?')
 134 'yo, wassup?'
 135
 136 >>> print(rewrap_value_wstring(u'yo, wassup?'))
 137 yo, wassup?
 138
 139    test that overloading on unicode works:
 140
 141 >>> print(rewrap_value_string(u'yo, wassup?'))
 142 yo, wassup?
 143
 144    wrap strings with embedded nulls:
 145
 146 >>> rewrap_value_string('yo,\0wassup?')
 147 'yo,\x00wassup?'
 148
 149 >>> rewrap_value_handle(1)
 150 1
 151 >>> x = 'hi'
 152 >>> assert rewrap_value_handle(x) is x
 153 >>> assert rewrap_value_object(x) is x
 154
 155   Note that we can currently get a mutable pointer into an immutable
 156   Python string:
 157
 158 >>> rewrap_value_mutable_cstring('hello, world')
 159 'hello, world'
 160
 161 >>> rewrap_const_reference_bool(None)
 162 0
 163 >>> rewrap_const_reference_bool(0)
 164 0
 165
 166 >>> try: rewrap_const_reference_bool('yes')
 167 ... except TypeError: pass
 168 ... else: print('expected a TypeError exception')
 169
 170 >>> rewrap_const_reference_char('x')
 171 'x'
 172
 173   Note that there's currently silent truncation of strings passed to
 174   char arguments.
 175
 176 >>> rewrap_const_reference_char('xy')
 177 'x'
 178 >>> rewrap_const_reference_signed_char(42)
 179 42
 180 >>> rewrap_const_reference_unsigned_char(42)
 181 42
 182 >>> rewrap_const_reference_int(42)
 183 42
 184 >>> rewrap_const_reference_unsigned_int(42)
 185 42
 186 >>> rewrap_const_reference_short(42)
 187 42
 188 >>> rewrap_const_reference_unsigned_short(42)
 189 42
 190 >>> rewrap_const_reference_long(42)
 191 42
 192 >>> rewrap_const_reference_unsigned_long(42)
 193 42
 194 >>> rewrap_const_reference_long_long(42) == 42
 195 True
 196 >>> rewrap_const_reference_unsigned_long_long(42) == 42
 197 True
 198
 199
 200 >>> assert abs(rewrap_const_reference_float(4.2) - 4.2) < .000001
 201 >>> rewrap_const_reference_double(4.2) - 4.2
 202 0.0
 203 >>> rewrap_const_reference_long_double(4.2) - 4.2
 204 0.0
 205
 206 >>> assert abs(rewrap_const_reference_complex_float(4+.2j) - (4+.2j)) < .000001
 207 >>> assert abs(rewrap_const_reference_complex_double(4+.2j) - (4+.2j)) < .000001
 208 >>> assert abs(rewrap_const_reference_complex_long_double(4+.2j) - (4+.2j)) < .000001
 209
 210 >>> rewrap_const_reference_cstring('hello, world')
 211 'hello, world'
 212 >>> rewrap_const_reference_string('yo, wassup?')
 213 'yo, wassup?'
 214
 215 >>> rewrap_const_reference_handle(1)
 216 1
 217 >>> x = 'hi'
 218 >>> assert rewrap_const_reference_handle(x) is x
 219 >>> assert rewrap_const_reference_object(x) is x
 220 >>> assert rewrap_reference_object(x) is x
 221
 222
 223 Check that None <==> NULL
 224
 225 >>> rewrap_const_reference_cstring(None)
 226
 227 But None cannot be converted to a string object:
 228
 229 >>> try: rewrap_const_reference_string(None)
 230 ... except TypeError: pass
 231 ... else: print('expected a TypeError exception')
 232
 233 Now check implicit conversions between floating/integer types
 234
 235 >>> rewrap_const_reference_float(42)
 236 42.0
 237
 238 >>> rewrap_const_reference_float(long(42))
 239 42.0
 240
 241 >>> try: rewrap_const_reference_int(42.0)
 242 ... except TypeError: pass
 243 ... else: print('expected a TypeError exception')
 244
 245 >>> rewrap_value_float(42)
 246 42.0
 247
 248 >>> try: rewrap_value_int(42.0)
 249 ... except TypeError: pass
 250 ... else: print('expected a TypeError exception')
 251
 252 Check that classic classes also work
 253
 254 >>> class FortyTwo:
 255 ...     def __int__(self):
 256 ...         return 42
 257 ...     def __float__(self):
 258 ...         return 42.0
 259 ...     def __complex__(self):
 260 ...         return complex(4+.2j)
 261 ...     def __str__(self):
 262 ...         return '42'
 263
 264 >>> try: rewrap_const_reference_float(FortyTwo())
 265 ... except TypeError: pass
 266 ... else: print('expected a TypeError exception')
 267
 268 >>> try: rewrap_value_int(FortyTwo())
 269 ... except TypeError: pass
 270 ... else: print('expected a TypeError exception')
 271
 272 >>> try: rewrap_const_reference_string(FortyTwo())
 273 ... except TypeError: pass
 274 ... else: print('expected a TypeError exception')
 275
 276 >>> try: rewrap_value_complex_double(FortyTwo())
 277 ... except TypeError: pass
 278 ... else: print('expected a TypeError exception')
 279
 280 # show that arbitrary handle<T> instantiations can be returned
 281 >>> assert get_type(1) is type(1)
 282
 283 >>> assert return_null_handle() is None
 284 """
 285
 286 def run(args = None):
 287     import sys
 288     import doctest
 289     import builtin_converters_ext
 290
 291     if 'rewrap_value_long_long' in dir(builtin_converters_ext):
 292         print('LONG_LONG supported, testing...')
 293     else:
 294         print('LONG_LONG not supported, skipping those tests...')
 295
 296     if args is not None:
 297         sys.argv = args
 298     return doctest.testmod(sys.modules.get(__name__))
 299
 300 if __name__ == '__main__':
 301     print("running...")
 302     import sys
 303     status = run()[0]
 304     if (status == 0): print("Done.")
 305     sys.exit(status)