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test
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test_ctypes
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test_strings.py
import unittest from ctypes import * from test.test_ctypes import need_symbol class StringArrayTestCase(unittest.TestCase): def test(self): BUF = c_char * 4 buf = BUF(b"a", b"b", b"c") self.assertEqual(buf.value, b"abc") self.assertEqual(buf.raw, b"abc\000") buf.value = b"ABCD" self.assertEqual(buf.value, b"ABCD") self.assertEqual(buf.raw, b"ABCD") buf.value = b"x" self.assertEqual(buf.value, b"x") self.assertEqual(buf.raw, b"x\000CD") buf[1] = b"Z" self.assertEqual(buf.value, b"xZCD") self.assertEqual(buf.raw, b"xZCD") self.assertRaises(ValueError, setattr, buf, "value", b"aaaaaaaa") self.assertRaises(TypeError, setattr, buf, "value", 42) def test_c_buffer_value(self): buf = c_buffer(32) buf.value = b"Hello, World" self.assertEqual(buf.value, b"Hello, World") self.assertRaises(TypeError, setattr, buf, "value", memoryview(b"Hello, World")) self.assertRaises(TypeError, setattr, buf, "value", memoryview(b"abc")) self.assertRaises(ValueError, setattr, buf, "raw", memoryview(b"x" * 100)) def test_c_buffer_raw(self): buf = c_buffer(32) buf.raw = memoryview(b"Hello, World") self.assertEqual(buf.value, b"Hello, World") self.assertRaises(TypeError, setattr, buf, "value", memoryview(b"abc")) self.assertRaises(ValueError, setattr, buf, "raw", memoryview(b"x" * 100)) 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")) def test_del_segfault(self): BUF = c_char * 4 buf = BUF() with self.assertRaises(AttributeError): del buf.raw @need_symbol('c_wchar') class WStringArrayTestCase(unittest.TestCase): def test(self): BUF = c_wchar * 4 buf = BUF("a", "b", "c") self.assertEqual(buf.value, "abc") buf.value = "ABCD" self.assertEqual(buf.value, "ABCD") buf.value = "x" self.assertEqual(buf.value, "x") buf[1] = "Z" self.assertEqual(buf.value, "xZCD") @unittest.skipIf(sizeof(c_wchar) < 4, "sizeof(wchar_t) is smaller than 4 bytes") def test_nonbmp(self): u = chr(0x10ffff) w = c_wchar(u) self.assertEqual(w.value, u) @need_symbol('c_wchar') class WStringTestCase(unittest.TestCase): def test_wchar(self): c_wchar("x") repr(byref(c_wchar("x"))) c_wchar("x") @unittest.skip('test disabled') def test_basic_wstrings(self): cs = c_wstring("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.assertEqual(sizeof(cs), 14) # The value property is the string up to the first terminating NUL. self.assertEqual(cs.value, "abcdef") self.assertEqual(c_wstring("abc\000def").value, "abc") self.assertEqual(c_wstring("abc\000def").value, "abc") # The raw property is the total buffer contents: self.assertEqual(cs.raw, "abcdef\000") self.assertEqual(c_wstring("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") self.assertRaises(TypeError, c_wstring, "123") self.assertRaises(ValueError, c_wstring, 0) @unittest.skip('test disabled') def test_toolong(self): cs = c_wstring("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 run_test(rep, msg, func, arg): items = range(rep) from time import perf_counter as 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))) if __name__ == '__main__': unittest.main()