| 1 | n/a | from ctypes import * |
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| 2 | n/a | import unittest, sys |
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| 3 | n/a | |
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| 4 | n/a | def callback_func(arg): |
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| 5 | n/a | 42 / arg |
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| 6 | n/a | raise ValueError(arg) |
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| 7 | n/a | |
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| 8 | n/a | @unittest.skipUnless(sys.platform == "win32", 'Windows-specific test') |
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| 9 | n/a | class call_function_TestCase(unittest.TestCase): |
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| 10 | n/a | # _ctypes.call_function is deprecated and private, but used by |
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| 11 | n/a | # Gary Bishp's readline module. If we have it, we must test it as well. |
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| 12 | n/a | |
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| 13 | n/a | def test(self): |
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| 14 | n/a | from _ctypes import call_function |
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| 15 | n/a | windll.kernel32.LoadLibraryA.restype = c_void_p |
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| 16 | n/a | windll.kernel32.GetProcAddress.argtypes = c_void_p, c_char_p |
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| 17 | n/a | windll.kernel32.GetProcAddress.restype = c_void_p |
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| 18 | n/a | |
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| 19 | n/a | hdll = windll.kernel32.LoadLibraryA(b"kernel32") |
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| 20 | n/a | funcaddr = windll.kernel32.GetProcAddress(hdll, b"GetModuleHandleA") |
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| 21 | n/a | |
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| 22 | n/a | self.assertEqual(call_function(funcaddr, (None,)), |
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| 23 | n/a | windll.kernel32.GetModuleHandleA(None)) |
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| 24 | n/a | |
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| 25 | n/a | class CallbackTracbackTestCase(unittest.TestCase): |
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| 26 | n/a | # When an exception is raised in a ctypes callback function, the C |
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| 27 | n/a | # code prints a traceback. |
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| 28 | n/a | # |
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| 29 | n/a | # This test makes sure the exception types *and* the exception |
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| 30 | n/a | # value is printed correctly. |
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| 31 | n/a | # |
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| 32 | n/a | # Changed in 0.9.3: No longer is '(in callback)' prepended to the |
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| 33 | n/a | # error message - instead an additional frame for the C code is |
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| 34 | n/a | # created, then a full traceback printed. When SystemExit is |
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| 35 | n/a | # raised in a callback function, the interpreter exits. |
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| 36 | n/a | |
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| 37 | n/a | def capture_stderr(self, func, *args, **kw): |
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| 38 | n/a | # helper - call function 'func', and return the captured stderr |
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| 39 | n/a | import io |
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| 40 | n/a | old_stderr = sys.stderr |
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| 41 | n/a | logger = sys.stderr = io.StringIO() |
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| 42 | n/a | try: |
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| 43 | n/a | func(*args, **kw) |
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| 44 | n/a | finally: |
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| 45 | n/a | sys.stderr = old_stderr |
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| 46 | n/a | return logger.getvalue() |
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| 47 | n/a | |
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| 48 | n/a | def test_ValueError(self): |
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| 49 | n/a | cb = CFUNCTYPE(c_int, c_int)(callback_func) |
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| 50 | n/a | out = self.capture_stderr(cb, 42) |
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| 51 | n/a | self.assertEqual(out.splitlines()[-1], |
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| 52 | n/a | "ValueError: 42") |
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| 53 | n/a | |
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| 54 | n/a | def test_IntegerDivisionError(self): |
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| 55 | n/a | cb = CFUNCTYPE(c_int, c_int)(callback_func) |
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| 56 | n/a | out = self.capture_stderr(cb, 0) |
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| 57 | n/a | self.assertEqual(out.splitlines()[-1][:19], |
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| 58 | n/a | "ZeroDivisionError: ") |
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| 59 | n/a | |
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| 60 | n/a | def test_FloatDivisionError(self): |
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| 61 | n/a | cb = CFUNCTYPE(c_int, c_double)(callback_func) |
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| 62 | n/a | out = self.capture_stderr(cb, 0.0) |
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| 63 | n/a | self.assertEqual(out.splitlines()[-1][:19], |
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| 64 | n/a | "ZeroDivisionError: ") |
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| 65 | n/a | |
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| 66 | n/a | def test_TypeErrorDivisionError(self): |
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| 67 | n/a | cb = CFUNCTYPE(c_int, c_char_p)(callback_func) |
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| 68 | n/a | out = self.capture_stderr(cb, b"spam") |
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| 69 | n/a | self.assertEqual(out.splitlines()[-1], |
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| 70 | n/a | "TypeError: " |
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| 71 | n/a | "unsupported operand type(s) for /: 'int' and 'bytes'") |
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| 72 | n/a | |
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| 73 | n/a | if __name__ == '__main__': |
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| 74 | n/a | unittest.main() |
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