import unittest from test.support import import_helper _testlimitedcapi = import_helper.import_module('_testlimitedcapi') _testcapi = import_helper.import_module('_testcapi') from _testcapi import PY_SSIZE_T_MIN, PY_SSIZE_T_MAX NULL = None class BytesSubclass(bytes): pass class BytesLike: def __init__(self, value): self.value = value def __bytes__(self): return self.value class CAPITest(unittest.TestCase): def test_check(self): # Test PyBytes_Check() check = _testlimitedcapi.bytes_check self.assertTrue(check(b'abc')) self.assertFalse(check('abc')) self.assertFalse(check(bytearray(b'abc'))) self.assertTrue(check(BytesSubclass(b'abc'))) self.assertFalse(check(BytesLike(b'abc'))) self.assertFalse(check(3)) self.assertFalse(check([])) self.assertFalse(check(object())) # CRASHES check(NULL) def test_checkexact(self): # Test PyBytes_CheckExact() check = _testlimitedcapi.bytes_checkexact self.assertTrue(check(b'abc')) self.assertFalse(check('abc')) self.assertFalse(check(bytearray(b'abc'))) self.assertFalse(check(BytesSubclass(b'abc'))) self.assertFalse(check(BytesLike(b'abc'))) self.assertFalse(check(3)) self.assertFalse(check([])) self.assertFalse(check(object())) # CRASHES check(NULL) def test_fromstringandsize(self): # Test PyBytes_FromStringAndSize() fromstringandsize = _testlimitedcapi.bytes_fromstringandsize self.assertEqual(fromstringandsize(b'abc'), b'abc') self.assertEqual(fromstringandsize(b'abc', 2), b'ab') self.assertEqual(fromstringandsize(b'abc\0def'), b'abc\0def') self.assertEqual(fromstringandsize(b'', 0), b'') self.assertEqual(fromstringandsize(NULL, 0), b'') self.assertEqual(len(fromstringandsize(NULL, 3)), 3) self.assertRaises((MemoryError, OverflowError), fromstringandsize, NULL, PY_SSIZE_T_MAX) self.assertRaises(SystemError, fromstringandsize, b'abc', -1) self.assertRaises(SystemError, fromstringandsize, b'abc', PY_SSIZE_T_MIN) self.assertRaises(SystemError, fromstringandsize, NULL, -1) self.assertRaises(SystemError, fromstringandsize, NULL, PY_SSIZE_T_MIN) def test_fromstring(self): # Test PyBytes_FromString() fromstring = _testlimitedcapi.bytes_fromstring self.assertEqual(fromstring(b'abc\0def'), b'abc') self.assertEqual(fromstring(b''), b'') # CRASHES fromstring(NULL) def test_fromobject(self): # Test PyBytes_FromObject() fromobject = _testlimitedcapi.bytes_fromobject self.assertEqual(fromobject(b'abc'), b'abc') self.assertEqual(fromobject(bytearray(b'abc')), b'abc') self.assertEqual(fromobject(BytesSubclass(b'abc')), b'abc') self.assertEqual(fromobject([97, 98, 99]), b'abc') self.assertRaises(TypeError, fromobject, 3) self.assertRaises(TypeError, fromobject, BytesLike(b'abc')) self.assertRaises(TypeError, fromobject, 'abc') self.assertRaises(TypeError, fromobject, object()) self.assertRaises(SystemError, fromobject, NULL) def test_size(self): # Test PyBytes_Size() size = _testlimitedcapi.bytes_size self.assertEqual(size(b'abc'), 3) self.assertEqual(size(BytesSubclass(b'abc')), 3) self.assertRaises(TypeError, size, bytearray(b'abc')) self.assertRaises(TypeError, size, 'abc') self.assertRaises(TypeError, size, object()) # CRASHES size(NULL) def test_asstring(self): """Test PyBytes_AsString()""" asstring = _testlimitedcapi.bytes_asstring self.assertEqual(asstring(b'abc', 4), b'abc\0') self.assertEqual(asstring(b'abc\0def', 8), b'abc\0def\0') self.assertRaises(TypeError, asstring, 'abc', 0) self.assertRaises(TypeError, asstring, object(), 0) # CRASHES asstring(NULL, 0) def test_asstringandsize(self): """Test PyBytes_AsStringAndSize()""" asstringandsize = _testlimitedcapi.bytes_asstringandsize asstringandsize_null = _testlimitedcapi.bytes_asstringandsize_null self.assertEqual(asstringandsize(b'abc', 4), (b'abc\0', 3)) self.assertEqual(asstringandsize(b'abc\0def', 8), (b'abc\0def\0', 7)) self.assertEqual(asstringandsize_null(b'abc', 4), b'abc\0') self.assertRaises(ValueError, asstringandsize_null, b'abc\0def', 8) self.assertRaises(TypeError, asstringandsize, 'abc', 0) self.assertRaises(TypeError, asstringandsize_null, 'abc', 0) self.assertRaises(TypeError, asstringandsize, object(), 0) self.assertRaises(TypeError, asstringandsize_null, object(), 0) # CRASHES asstringandsize(NULL, 0) # CRASHES asstringandsize_null(NULL, 0) def test_repr(self): # Test PyBytes_Repr() bytes_repr = _testlimitedcapi.bytes_repr self.assertEqual(bytes_repr(b'''abc''', 0), r"""b'abc'""") self.assertEqual(bytes_repr(b'''abc''', 1), r"""b'abc'""") self.assertEqual(bytes_repr(b'''a'b"c"d''', 0), r"""b'a\'b"c"d'""") self.assertEqual(bytes_repr(b'''a'b"c"d''', 1), r"""b'a\'b"c"d'""") self.assertEqual(bytes_repr(b'''a'b"c''', 0), r"""b'a\'b"c'""") self.assertEqual(bytes_repr(b'''a'b"c''', 1), r"""b'a\'b"c'""") self.assertEqual(bytes_repr(b'''a'b'c"d''', 0), r"""b'a\'b\'c"d'""") self.assertEqual(bytes_repr(b'''a'b'c"d''', 1), r"""b'a\'b\'c"d'""") self.assertEqual(bytes_repr(b'''a'b'c'd''', 0), r"""b'a\'b\'c\'d'""") self.assertEqual(bytes_repr(b'''a'b'c'd''', 1), r'''b"a'b'c'd"''') self.assertEqual(bytes_repr(BytesSubclass(b'abc'), 0), r"""b'abc'""") # UDEFINED bytes_repr(object(), 0) # CRASHES bytes_repr(NULL, 0) def test_concat(self, concat=None): """Test PyBytes_Concat()""" if concat is None: concat = _testlimitedcapi.bytes_concat self.assertEqual(concat(b'abc', b'def'), b'abcdef') self.assertEqual(concat(b'a\0b', b'c\0d'), b'a\0bc\0d') self.assertEqual(concat(bytearray(b'abc'), b'def'), b'abcdef') self.assertEqual(concat(b'abc', bytearray(b'def')), b'abcdef') self.assertEqual(concat(bytearray(b'abc'), b''), b'abc') self.assertEqual(concat(b'', bytearray(b'def')), b'def') self.assertEqual(concat(memoryview(b'xabcy')[1:4], b'def'), b'abcdef') self.assertEqual(concat(b'abc', memoryview(b'xdefy')[1:4]), b'abcdef') self.assertEqual(concat(b'abc', b'def', True), b'abcdef') self.assertEqual(concat(b'abc', bytearray(b'def'), True), b'abcdef') # Check that it does not change the singleton self.assertEqual(concat(bytes(), b'def', True), b'def') self.assertEqual(len(bytes()), 0) self.assertRaises(TypeError, concat, memoryview(b'axbycz')[::2], b'def') self.assertRaises(TypeError, concat, b'abc', memoryview(b'dxeyfz')[::2]) self.assertRaises(TypeError, concat, b'abc', 'def') self.assertRaises(TypeError, concat, 'abc', b'def') self.assertRaises(TypeError, concat, 'abc', 'def') self.assertRaises(TypeError, concat, [], b'def') self.assertRaises(TypeError, concat, b'abc', []) self.assertRaises(TypeError, concat, [], []) self.assertEqual(concat(NULL, b'def'), NULL) self.assertEqual(concat(b'abc', NULL), NULL) self.assertEqual(concat(NULL, object()), NULL) self.assertEqual(concat(object(), NULL), NULL) def test_concatanddel(self): """Test PyBytes_ConcatAndDel()""" self.test_concat(_testlimitedcapi.bytes_concatanddel) def test_decodeescape(self): """Test PyBytes_DecodeEscape()""" decodeescape = _testlimitedcapi.bytes_decodeescape self.assertEqual(decodeescape(b'abc'), b'abc') self.assertEqual(decodeescape(br'\t\n\r\x0b\x0c\x00\\\'\"'), b'''\t\n\r\v\f\0\\'"''') self.assertEqual(decodeescape(b'\t\n\r\x0b\x0c\x00'), b'\t\n\r\v\f\0') self.assertEqual(decodeescape(br'\xa1\xa2'), b'\xa1\xa2') self.assertEqual(decodeescape(br'\2\24\241'), b'\x02\x14\xa1') self.assertEqual(decodeescape(b'\xa1\xa2'), b'\xa1\xa2') with self.assertWarns(DeprecationWarning): self.assertEqual(decodeescape(br'\u4f60'), br'\u4f60') with self.assertWarns(DeprecationWarning): self.assertEqual(decodeescape(br'\z'), br'\z') with self.assertWarns(DeprecationWarning): self.assertEqual(decodeescape(br'\541'), b'a') for b in b'\\', br'\x', br'\xa', br'\xz', br'\xaz': self.assertRaises(ValueError, decodeescape, b) self.assertRaises(ValueError, decodeescape, b, 'strict') self.assertEqual(decodeescape(br'x\xa', 'replace'), b'x?') self.assertEqual(decodeescape(br'x\xay', 'replace'), b'x?y') self.assertEqual(decodeescape(br'x\xa\xy', 'replace'), b'x??y') self.assertEqual(decodeescape(br'x\xa\xy', 'ignore'), b'xy') self.assertRaises(ValueError, decodeescape, b'\\', 'spam') self.assertEqual(decodeescape(NULL), b'') self.assertRaises(OverflowError, decodeescape, b'abc', NULL, PY_SSIZE_T_MAX) self.assertRaises(OverflowError, decodeescape, NULL, NULL, PY_SSIZE_T_MAX) # CRASHES decodeescape(b'abc', NULL, -1) # CRASHES decodeescape(NULL, NULL, 1) def test_resize(self): """Test _PyBytes_Resize()""" resize = _testcapi.bytes_resize for new in True, False: self.assertEqual(resize(b'abc', 0, new), b'') self.assertEqual(resize(b'abc', 1, new), b'a') self.assertEqual(resize(b'abc', 2, new), b'ab') self.assertEqual(resize(b'abc', 3, new), b'abc') b = resize(b'abc', 4, new) self.assertEqual(len(b), 4) self.assertEqual(b[:3], b'abc') self.assertEqual(resize(b'a', 0, new), b'') self.assertEqual(resize(b'a', 1, new), b'a') b = resize(b'a', 2, new) self.assertEqual(len(b), 2) self.assertEqual(b[:1], b'a') self.assertEqual(resize(b'', 0, new), b'') self.assertEqual(len(resize(b'', 1, new)), 1) self.assertEqual(len(resize(b'', 2, new)), 2) self.assertRaises(SystemError, resize, b'abc', -1, False) self.assertRaises(SystemError, resize, bytearray(b'abc'), 3, False) # CRASHES resize(NULL, 0, False) # CRASHES resize(NULL, 3, False) if __name__ == "__main__": unittest.main()