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68 lines
2.3 KiB
Python
68 lines
2.3 KiB
Python
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import os
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import unittest
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from test import support
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from test.support import import_helper, os_helper
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_testcapi = import_helper.import_module('_testcapi')
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class CAPIFileTest(unittest.TestCase):
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def test_py_fopen(self):
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# Test Py_fopen() and Py_fclose()
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with open(__file__, "rb") as fp:
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source = fp.read()
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for filename in (__file__, os.fsencode(__file__)):
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with self.subTest(filename=filename):
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data = _testcapi.py_fopen(filename, "rb")
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self.assertEqual(data, source[:256])
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data = _testcapi.py_fopen(os_helper.FakePath(filename), "rb")
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self.assertEqual(data, source[:256])
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filenames = [
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os_helper.TESTFN,
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os.fsencode(os_helper.TESTFN),
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]
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# TESTFN_UNDECODABLE cannot be used to create a file on macOS/WASI.
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if os_helper.TESTFN_UNENCODABLE is not None:
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filenames.append(os_helper.TESTFN_UNENCODABLE)
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for filename in filenames:
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with self.subTest(filename=filename):
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try:
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with open(filename, "wb") as fp:
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fp.write(source)
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data = _testcapi.py_fopen(filename, "rb")
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self.assertEqual(data, source[:256])
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finally:
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os_helper.unlink(filename)
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# embedded null character/byte in the filename
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with self.assertRaises(ValueError):
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_testcapi.py_fopen("a\x00b", "rb")
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with self.assertRaises(ValueError):
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_testcapi.py_fopen(b"a\x00b", "rb")
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# non-ASCII mode failing with "Invalid argument"
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with self.assertRaises(OSError):
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_testcapi.py_fopen(__file__, "\xe9")
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# invalid filename type
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for invalid_type in (123, object()):
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with self.subTest(filename=invalid_type):
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with self.assertRaises(TypeError):
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_testcapi.py_fopen(invalid_type, "rb")
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if support.MS_WINDOWS:
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with self.assertRaises(OSError):
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# On Windows, the file mode is limited to 10 characters
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_testcapi.py_fopen(__file__, "rt+, ccs=UTF-8")
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# CRASHES py_fopen(__file__, None)
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if __name__ == "__main__":
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unittest.main()
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