text: import unittest
  from ctypes import *
  from test import test_support
  
  class StringArrayTestCase(unittest.TestCase):
      def test(self):
          BUF = c_char * 4
  
          buf = BUF("a", "b", "c")
          self.assertEqual(buf.value, "abc")
          self.assertEqual(buf.raw, "abc\000")
  
          buf.value = "ABCD"
          self.assertEqual(buf.value, "ABCD")
          self.assertEqual(buf.raw, "ABCD")
  
          buf.value = "x"
          self.assertEqual(buf.value, "x")
          self.assertEqual(buf.raw, "x\000CD")
  
          buf[1] = "Z"
          self.assertEqual(buf.value, "xZCD")
          self.assertEqual(buf.raw, "xZCD")
  
          self.assertRaises(ValueError, setattr, buf, "value", "aaaaaaaa")
          self.assertRaises(TypeError, setattr, buf, "value", 42)
  
      def test_c_buffer_value(self, memoryview=memoryview):
          buf = c_buffer(32)
  
          buf.value = "Hello, World"
          self.assertEqual(buf.value, "Hello, World")
  
          self.assertRaises(TypeError, setattr, buf, "value", memoryview("Hello, World"))
          self.assertRaises(TypeError, setattr, buf, "value", memoryview("abc"))
          self.assertRaises(ValueError, setattr, buf, "raw", memoryview("x" * 100))
  
      def test_c_buffer_raw(self, memoryview=memoryview):
          buf = c_buffer(32)
  
          buf.raw = memoryview("Hello, World")
          self.assertEqual(buf.value, "Hello, World")
          self.assertRaises(TypeError, setattr, buf, "value", memoryview("abc"))
          self.assertRaises(ValueError, setattr, buf, "raw", memoryview("x" * 100))
  
      def test_c_buffer_deprecated(self):
          # Compatibility with 2.x
          with test_support.check_py3k_warnings():
              self.test_c_buffer_value(buffer)
              self.test_c_buffer_raw(buffer)
  
      def test_param_1(self):
          BUF = c_char * 4
          buf = BUF()
  ##        print c_char_p.from_param(buf)
  
      def test_param_2(self):
          BUF = c_char * 4
          buf = BUF()
  ##        print BUF.from_param(c_char_p("python"))
  ##        print BUF.from_param(BUF(*"pyth"))
  
  try:
      c_wchar
  except NameError:
      pass
  else:
      class WStringArrayTestCase(unittest.TestCase):
          def test(self):
              BUF = c_wchar * 4
  
              buf = BUF(u"a", u"b", u"c")
              self.assertEqual(buf.value, u"abc")
  
              buf.value = u"ABCD"
              self.assertEqual(buf.value, u"ABCD")
  
              buf.value = u"x"
              self.assertEqual(buf.value, u"x")
  
              buf[1] = u"Z"
              self.assertEqual(buf.value, u"xZCD")
  
  class StringTestCase(unittest.TestCase):
      def XX_test_basic_strings(self):
          cs = c_string("abcdef")
  
          # Cannot call len on a c_string any longer
          self.assertRaises(TypeError, len, cs)
          self.assertEqual(sizeof(cs), 7)
  
          # The value property is the string up to the first terminating NUL.
          self.assertEqual(cs.value, "abcdef")
          self.assertEqual(c_string("abc\000def").value, "abc")
  
          # The raw property is the total buffer contents:
          self.assertEqual(cs.raw, "abcdef\000")
          self.assertEqual(c_string("abc\000def").raw, "abc\000def\000")
  
          # We can change the value:
          cs.value = "ab"
          self.assertEqual(cs.value, "ab")
          self.assertEqual(cs.raw, "ab\000\000\000\000\000")
  
          cs.raw = "XY"
          self.assertEqual(cs.value, "XY")
          self.assertEqual(cs.raw, "XY\000\000\000\000\000")
  
          self.assertRaises(TypeError, c_string, u"123")
  
      def XX_test_sized_strings(self):
  
          # New in releases later than 0.4.0:
          self.assertRaises(TypeError, c_string, None)
  
          # New in releases later than 0.4.0:
          # c_string(number) returns an empty string of size number
          self.assertTrue(len(c_string(32).raw) == 32)
          self.assertRaises(ValueError, c_string, -1)
          self.assertRaises(ValueError, c_string, 0)
  
          # These tests fail, because it is no longer initialized
  ##        self.assertTrue(c_string(2).value == "")
  ##        self.assertTrue(c_string(2).raw == "\000\000")
          self.assertTrue(c_string(2).raw[-1] == "\000")
          self.assertTrue(len(c_string(2).raw) == 2)
  
      def XX_test_initialized_strings(self):
  
          self.assertTrue(c_string("ab", 4).raw[:2] == "ab")
          self.assertTrue(c_string("ab", 4).raw[:2:] == "ab")
          self.assertTrue(c_string("ab", 4).raw[:2:-1] == "ba")
          self.assertTrue(c_string("ab", 4).raw[:2:2] == "a")
          self.assertTrue(c_string("ab", 4).raw[-1] == "\000")
          self.assertTrue(c_string("ab", 2).raw == "a\000")
  
      def XX_test_toolong(self):
          cs = c_string("abcdef")
          # Much too long string:
          self.assertRaises(ValueError, setattr, cs, "value", "123456789012345")
  
          # One char too long values:
          self.assertRaises(ValueError, setattr, cs, "value", "1234567")
  
  ##    def test_perf(self):
  ##        check_perf()
  
  try:
      c_wchar
  except NameError:
      pass
  else:
      class WStringTestCase(unittest.TestCase):
          def test_wchar(self):
              c_wchar(u"x")
              repr(byref(c_wchar(u"x")))
              c_wchar("x")
  
  
          def X_test_basic_wstrings(self):
              cs = c_wstring(u"abcdef")
  
              # XXX This behaviour is about to change:
              # len returns the size of the internal buffer in bytes.
              # This includes the terminating NUL character.
              self.assertTrue(sizeof(cs) == 14)
  
              # The value property is the string up to the first terminating NUL.
              self.assertTrue(cs.value == u"abcdef")
              self.assertTrue(c_wstring(u"abc\000def").value == u"abc")
  
              self.assertTrue(c_wstring(u"abc\000def").value == u"abc")
  
              # The raw property is the total buffer contents:
              self.assertTrue(cs.raw == u"abcdef\000")
              self.assertTrue(c_wstring(u"abc\000def").raw == u"abc\000def\000")
  
              # We can change the value:
              cs.value = u"ab"
              self.assertTrue(cs.value == u"ab")
              self.assertTrue(cs.raw == u"ab\000\000\000\000\000")
  
              self.assertRaises(TypeError, c_wstring, "123")
              self.assertRaises(ValueError, c_wstring, 0)
  
          def X_test_toolong(self):
              cs = c_wstring(u"abcdef")
              # Much too long string:
              self.assertRaises(ValueError, setattr, cs, "value", u"123456789012345")
  
              # One char too long values:
              self.assertRaises(ValueError, setattr, cs, "value", u"1234567")
  
  
  def run_test(rep, msg, func, arg):
      items = range(rep)
      from time import clock
      start = clock()
      for i in items:
          func(arg); func(arg); func(arg); func(arg); func(arg)
      stop = clock()
      print "%20s: %.2f us" % (msg, ((stop-start)*1e6/5/rep))
  
  def check_perf():
      # Construct 5 objects
  
      REP = 200000
  
      run_test(REP, "c_string(None)", c_string, None)
      run_test(REP, "c_string('abc')", c_string, 'abc')
  
  # Python 2.3 -OO, win2k, P4 700 MHz:
  #
  #      c_string(None): 1.75 us
  #     c_string('abc'): 2.74 us
  
  # Python 2.2 -OO, win2k, P4 700 MHz:
  #
  #      c_string(None): 2.95 us
  #     c_string('abc'): 3.67 us
  
  
  if __name__ == '__main__':
  ##    check_perf()
      unittest.main()
  