Thomas Heller | babddfc | 2006-03-08 19:56:54 +0000 | [diff] [blame] | 1 | import sys |
| 2 | import unittest |
| 3 | from ctypes import * |
| 4 | |
| 5 | class MemFunctionsTest(unittest.TestCase): |
| 6 | def test_memmove(self): |
| 7 | # large buffers apparently increase the chance that the memory |
| 8 | # is allocated in high address space. |
| 9 | a = create_string_buffer(1000000) |
Thomas Heller | d68d131 | 2007-07-12 19:45:20 +0000 | [diff] [blame] | 10 | p = b"Hello, World" |
Thomas Heller | babddfc | 2006-03-08 19:56:54 +0000 | [diff] [blame] | 11 | result = memmove(a, p, len(p)) |
Guido van Rossum | 97f9d4f | 2007-10-24 18:41:19 +0000 | [diff] [blame] | 12 | self.failUnlessEqual(a.value, b"Hello, World") |
Thomas Heller | babddfc | 2006-03-08 19:56:54 +0000 | [diff] [blame] | 13 | |
Guido van Rossum | 97f9d4f | 2007-10-24 18:41:19 +0000 | [diff] [blame] | 14 | self.failUnlessEqual(string_at(result), b"Hello, World") |
| 15 | self.failUnlessEqual(string_at(result, 5), b"Hello") |
| 16 | self.failUnlessEqual(string_at(result, 16), b"Hello, World\0\0\0\0") |
| 17 | self.failUnlessEqual(string_at(result, 0), b"") |
Thomas Heller | babddfc | 2006-03-08 19:56:54 +0000 | [diff] [blame] | 18 | |
| 19 | def test_memset(self): |
| 20 | a = create_string_buffer(1000000) |
| 21 | result = memset(a, ord('x'), 16) |
Guido van Rossum | 97f9d4f | 2007-10-24 18:41:19 +0000 | [diff] [blame] | 22 | self.failUnlessEqual(a.value, b"xxxxxxxxxxxxxxxx") |
Thomas Heller | babddfc | 2006-03-08 19:56:54 +0000 | [diff] [blame] | 23 | |
Guido van Rossum | 97f9d4f | 2007-10-24 18:41:19 +0000 | [diff] [blame] | 24 | self.failUnlessEqual(string_at(result), b"xxxxxxxxxxxxxxxx") |
| 25 | self.failUnlessEqual(string_at(a), b"xxxxxxxxxxxxxxxx") |
| 26 | self.failUnlessEqual(string_at(a, 20), b"xxxxxxxxxxxxxxxx\0\0\0\0") |
Thomas Heller | babddfc | 2006-03-08 19:56:54 +0000 | [diff] [blame] | 27 | |
| 28 | def test_cast(self): |
| 29 | a = (c_ubyte * 32)(*map(ord, "abcdef")) |
| 30 | self.failUnlessEqual(cast(a, c_char_p).value, "abcdef") |
| 31 | self.failUnlessEqual(cast(a, POINTER(c_byte))[:7], |
| 32 | [97, 98, 99, 100, 101, 102, 0]) |
Thomas Wouters | 47b49bf | 2007-08-30 22:15:33 +0000 | [diff] [blame] | 33 | self.failUnlessEqual(cast(a, POINTER(c_byte))[:7:], |
| 34 | [97, 98, 99, 100, 101, 102, 0]) |
| 35 | self.failUnlessEqual(cast(a, POINTER(c_byte))[6:-1:-1], |
| 36 | [0, 102, 101, 100, 99, 98, 97]) |
| 37 | self.failUnlessEqual(cast(a, POINTER(c_byte))[:7:2], |
| 38 | [97, 99, 101, 0]) |
| 39 | self.failUnlessEqual(cast(a, POINTER(c_byte))[:7:7], |
| 40 | [97]) |
Thomas Heller | babddfc | 2006-03-08 19:56:54 +0000 | [diff] [blame] | 41 | |
| 42 | def test_string_at(self): |
Thomas Heller | d68d131 | 2007-07-12 19:45:20 +0000 | [diff] [blame] | 43 | s = string_at(b"foo bar") |
Thomas Heller | babddfc | 2006-03-08 19:56:54 +0000 | [diff] [blame] | 44 | # XXX The following may be wrong, depending on how Python |
| 45 | # manages string instances |
| 46 | self.failUnlessEqual(2, sys.getrefcount(s)) |
| 47 | self.failUnless(s, "foo bar") |
| 48 | |
Guido van Rossum | 97f9d4f | 2007-10-24 18:41:19 +0000 | [diff] [blame] | 49 | self.failUnlessEqual(string_at(b"foo bar", 7), b"foo bar") |
| 50 | self.failUnlessEqual(string_at(b"foo bar", 3), b"foo") |
Thomas Heller | babddfc | 2006-03-08 19:56:54 +0000 | [diff] [blame] | 51 | |
| 52 | try: |
| 53 | create_unicode_buffer |
| 54 | except NameError: |
| 55 | pass |
| 56 | else: |
| 57 | def test_wstring_at(self): |
| 58 | p = create_unicode_buffer("Hello, World") |
| 59 | a = create_unicode_buffer(1000000) |
| 60 | result = memmove(a, p, len(p) * sizeof(c_wchar)) |
| 61 | self.failUnlessEqual(a.value, "Hello, World") |
| 62 | |
| 63 | self.failUnlessEqual(wstring_at(a), "Hello, World") |
| 64 | self.failUnlessEqual(wstring_at(a, 5), "Hello") |
| 65 | self.failUnlessEqual(wstring_at(a, 16), "Hello, World\0\0\0\0") |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 66 | self.failUnlessEqual(wstring_at(a, 0), "") |
Thomas Heller | babddfc | 2006-03-08 19:56:54 +0000 | [diff] [blame] | 67 | |
| 68 | if __name__ == "__main__": |
| 69 | unittest.main() |