diff options
Diffstat (limited to 'Lib/test/test_bytes.py')
| -rw-r--r-- | Lib/test/test_bytes.py | 243 |
1 files changed, 210 insertions, 33 deletions
diff --git a/Lib/test/test_bytes.py b/Lib/test/test_bytes.py index 3288a5be87..a103a7d39c 100644 --- a/Lib/test/test_bytes.py +++ b/Lib/test/test_bytes.py @@ -4,6 +4,7 @@ XXX This is a mess. Common tests should be unified with string_tests.py (and the latter should be modernized). """ +import array import os import re import sys @@ -81,6 +82,18 @@ class BaseBytesTest: self.assertRaises(ValueError, self.type2test, [Indexable(-1)]) self.assertRaises(ValueError, self.type2test, [Indexable(256)]) + def test_from_buffer(self): + a = self.type2test(array.array('B', [1, 2, 3])) + self.assertEqual(a, b"\x01\x02\x03") + + # http://bugs.python.org/issue29159 + # Fallback when __index__ raises exception other than OverflowError + class B(bytes): + def __index__(self): + raise TypeError + + self.assertEqual(self.type2test(B(b"foobar")), b"foobar") + def test_from_ssize(self): self.assertEqual(self.type2test(0), b'') self.assertEqual(self.type2test(1), b'\x00') @@ -216,7 +229,7 @@ class BaseBytesTest: self.assertEqual(b, self.type2test(sample[:-3], "utf-8")) def test_decode(self): - sample = "Hello world\n\u1234\u5678\u9abc\def0\def0" + sample = "Hello world\n\u1234\u5678\u9abc" for enc in ("utf-8", "utf-16"): b = self.type2test(sample, enc) self.assertEqual(b.decode(enc), sample) @@ -269,6 +282,7 @@ class BaseBytesTest: self.assertNotIn(200, b) self.assertRaises(ValueError, lambda: 300 in b) self.assertRaises(ValueError, lambda: -1 in b) + self.assertRaises(ValueError, lambda: sys.maxsize+1 in b) self.assertRaises(TypeError, lambda: None in b) self.assertRaises(TypeError, lambda: float(ord('a')) in b) self.assertRaises(TypeError, lambda: "a" in b) @@ -300,6 +314,20 @@ class BaseBytesTest: self.assertRaises(ValueError, self.type2test.fromhex, '\x00') self.assertRaises(ValueError, self.type2test.fromhex, '12 \x00 34') + for data, pos in ( + # invalid first hexadecimal character + ('12 x4 56', 3), + # invalid second hexadecimal character + ('12 3x 56', 4), + # two invalid hexadecimal characters + ('12 xy 56', 3), + # test non-ASCII string + ('12 3\xff 56', 4), + ): + with self.assertRaises(ValueError) as cm: + self.type2test.fromhex(data) + self.assertIn('at position %s' % pos, str(cm.exception)) + def test_hex(self): self.assertRaises(TypeError, self.type2test.hex) self.assertRaises(TypeError, self.type2test.hex, 1) @@ -674,6 +702,37 @@ class BaseBytesTest: test.support.check_free_after_iterating(self, iter, self.type2test) test.support.check_free_after_iterating(self, reversed, self.type2test) + def test_translate(self): + b = self.type2test(b'hello') + rosetta = bytearray(range(256)) + rosetta[ord('o')] = ord('e') + + self.assertRaises(TypeError, b.translate) + self.assertRaises(TypeError, b.translate, None, None) + self.assertRaises(ValueError, b.translate, bytes(range(255))) + + c = b.translate(rosetta, b'hello') + self.assertEqual(b, b'hello') + self.assertIsInstance(c, self.type2test) + + c = b.translate(rosetta) + d = b.translate(rosetta, b'') + self.assertEqual(c, d) + self.assertEqual(c, b'helle') + + c = b.translate(rosetta, b'l') + self.assertEqual(c, b'hee') + c = b.translate(None, b'e') + self.assertEqual(c, b'hllo') + + # test delete as a keyword argument + c = b.translate(rosetta, delete=b'') + self.assertEqual(c, b'helle') + c = b.translate(rosetta, delete=b'l') + self.assertEqual(c, b'hee') + c = b.translate(None, delete=b'e') + self.assertEqual(c, b'hllo') + class BytesTest(BaseBytesTest, unittest.TestCase): type2test = bytes @@ -722,31 +781,142 @@ class BytesTest(BaseBytesTest, unittest.TestCase): # Test PyBytes_FromFormat() def test_from_format(self): - test.support.import_module('ctypes') - from ctypes import pythonapi, py_object, c_int, c_char_p + ctypes = test.support.import_module('ctypes') + _testcapi = test.support.import_module('_testcapi') + from ctypes import pythonapi, py_object + from ctypes import ( + c_int, c_uint, + c_long, c_ulong, + c_size_t, c_ssize_t, + c_char_p) + PyBytes_FromFormat = pythonapi.PyBytes_FromFormat PyBytes_FromFormat.restype = py_object + # basic tests self.assertEqual(PyBytes_FromFormat(b'format'), b'format') - + self.assertEqual(PyBytes_FromFormat(b'Hello %s !', b'world'), + b'Hello world !') + + # test formatters + self.assertEqual(PyBytes_FromFormat(b'c=%c', c_int(0)), + b'c=\0') + self.assertEqual(PyBytes_FromFormat(b'c=%c', c_int(ord('@'))), + b'c=@') + self.assertEqual(PyBytes_FromFormat(b'c=%c', c_int(255)), + b'c=\xff') + self.assertEqual(PyBytes_FromFormat(b'd=%d ld=%ld zd=%zd', + c_int(1), c_long(2), + c_size_t(3)), + b'd=1 ld=2 zd=3') + self.assertEqual(PyBytes_FromFormat(b'd=%d ld=%ld zd=%zd', + c_int(-1), c_long(-2), + c_size_t(-3)), + b'd=-1 ld=-2 zd=-3') + self.assertEqual(PyBytes_FromFormat(b'u=%u lu=%lu zu=%zu', + c_uint(123), c_ulong(456), + c_size_t(789)), + b'u=123 lu=456 zu=789') + self.assertEqual(PyBytes_FromFormat(b'i=%i', c_int(123)), + b'i=123') + self.assertEqual(PyBytes_FromFormat(b'i=%i', c_int(-123)), + b'i=-123') + self.assertEqual(PyBytes_FromFormat(b'x=%x', c_int(0xabc)), + b'x=abc') + + sizeof_ptr = ctypes.sizeof(c_char_p) + + if os.name == 'nt': + # Windows (MSCRT) + ptr_format = '0x%0{}X'.format(2 * sizeof_ptr) + def ptr_formatter(ptr): + return (ptr_format % ptr) + else: + # UNIX (glibc) + def ptr_formatter(ptr): + return '%#x' % ptr + + ptr = 0xabcdef + self.assertEqual(PyBytes_FromFormat(b'ptr=%p', c_char_p(ptr)), + ('ptr=' + ptr_formatter(ptr)).encode('ascii')) + self.assertEqual(PyBytes_FromFormat(b's=%s', c_char_p(b'cstr')), + b's=cstr') + + # test minimum and maximum integer values + size_max = c_size_t(-1).value + for formatstr, ctypes_type, value, py_formatter in ( + (b'%d', c_int, _testcapi.INT_MIN, str), + (b'%d', c_int, _testcapi.INT_MAX, str), + (b'%ld', c_long, _testcapi.LONG_MIN, str), + (b'%ld', c_long, _testcapi.LONG_MAX, str), + (b'%lu', c_ulong, _testcapi.ULONG_MAX, str), + (b'%zd', c_ssize_t, _testcapi.PY_SSIZE_T_MIN, str), + (b'%zd', c_ssize_t, _testcapi.PY_SSIZE_T_MAX, str), + (b'%zu', c_size_t, size_max, str), + (b'%p', c_char_p, size_max, ptr_formatter), + ): + self.assertEqual(PyBytes_FromFormat(formatstr, ctypes_type(value)), + py_formatter(value).encode('ascii')), + + # width and precision (width is currently ignored) + self.assertEqual(PyBytes_FromFormat(b'%5s', b'a'), + b'a') + self.assertEqual(PyBytes_FromFormat(b'%.3s', b'abcdef'), + b'abc') + + # '%%' formatter + self.assertEqual(PyBytes_FromFormat(b'%%'), + b'%') + self.assertEqual(PyBytes_FromFormat(b'[%%]'), + b'[%]') + self.assertEqual(PyBytes_FromFormat(b'%%%c', c_int(ord('_'))), + b'%_') + self.assertEqual(PyBytes_FromFormat(b'%%s'), + b'%s') + + # Invalid formats and partial formatting self.assertEqual(PyBytes_FromFormat(b'%'), b'%') - self.assertEqual(PyBytes_FromFormat(b'%%'), b'%') - self.assertEqual(PyBytes_FromFormat(b'%%s'), b'%s') - self.assertEqual(PyBytes_FromFormat(b'[%%]'), b'[%]') - self.assertEqual(PyBytes_FromFormat(b'%%%c', c_int(ord('_'))), b'%_') - - self.assertEqual(PyBytes_FromFormat(b'c:%c', c_int(255)), - b'c:\xff') - self.assertEqual(PyBytes_FromFormat(b's:%s', c_char_p(b'cstr')), - b's:cstr') + self.assertEqual(PyBytes_FromFormat(b'x=%i y=%', c_int(2), c_int(3)), + b'x=2 y=%') - # Issue #19969 + # Issue #19969: %c must raise OverflowError for values + # not in the range [0; 255] self.assertRaises(OverflowError, PyBytes_FromFormat, b'%c', c_int(-1)) self.assertRaises(OverflowError, PyBytes_FromFormat, b'%c', c_int(256)) + def test_bytes_blocking(self): + class IterationBlocked(list): + __bytes__ = None + i = [0, 1, 2, 3] + self.assertEqual(bytes(i), b'\x00\x01\x02\x03') + self.assertRaises(TypeError, bytes, IterationBlocked(i)) + + # At least in CPython, because bytes.__new__ and the C API + # PyBytes_FromObject have different fallback rules, integer + # fallback is handled specially, so test separately. + class IntBlocked(int): + __bytes__ = None + self.assertEqual(bytes(3), b'\0\0\0') + self.assertRaises(TypeError, bytes, IntBlocked(3)) + + # While there is no separately-defined rule for handling bytes + # subclasses differently from other buffer-interface classes, + # an implementation may well special-case them (as CPython 2.x + # str did), so test them separately. + class BytesSubclassBlocked(bytes): + __bytes__ = None + self.assertEqual(bytes(b'ab'), b'ab') + self.assertRaises(TypeError, bytes, BytesSubclassBlocked(b'ab')) + + class BufferBlocked(bytearray): + __bytes__ = None + ba, bb = bytearray(b'ab'), BufferBlocked(b'ab') + self.assertEqual(bytes(ba), b'ab') + self.assertRaises(TypeError, bytes, bb) + class ByteArrayTest(BaseBytesTest, unittest.TestCase): type2test = bytearray @@ -1332,24 +1502,6 @@ class AssortedBytesTest(unittest.TestCase): self.assertRaises(SyntaxError, eval, 'b"%s"' % chr(c)) - def test_translate(self): - b = b'hello' - ba = bytearray(b) - rosetta = bytearray(range(0, 256)) - rosetta[ord('o')] = ord('e') - c = b.translate(rosetta, b'l') - self.assertEqual(b, b'hello') - self.assertEqual(c, b'hee') - c = ba.translate(rosetta, b'l') - self.assertEqual(ba, b'hello') - self.assertEqual(c, b'hee') - c = b.translate(None, b'e') - self.assertEqual(c, b'hllo') - c = ba.translate(None, b'e') - self.assertEqual(c, b'hllo') - self.assertRaises(TypeError, b.translate, None, None) - self.assertRaises(TypeError, ba.translate, None, None) - def test_split_bytearray(self): self.assertEqual(b'a b'.split(memoryview(b' ')), [b'a', b'b']) @@ -1513,7 +1665,32 @@ class SubclassTest: self.assertEqual(type(a), type(b)) self.assertEqual(type(a.y), type(b.y)) - test_fromhex = BaseBytesTest.test_fromhex + def test_fromhex(self): + b = self.type2test.fromhex('1a2B30') + self.assertEqual(b, b'\x1a\x2b\x30') + self.assertIs(type(b), self.type2test) + + class B1(self.basetype): + def __new__(cls, value): + me = self.basetype.__new__(cls, value) + me.foo = 'bar' + return me + + b = B1.fromhex('1a2B30') + self.assertEqual(b, b'\x1a\x2b\x30') + self.assertIs(type(b), B1) + self.assertEqual(b.foo, 'bar') + + class B2(self.basetype): + def __init__(me, *args, **kwargs): + if self.basetype is not bytes: + self.basetype.__init__(me, *args, **kwargs) + me.foo = 'bar' + + b = B2.fromhex('1a2B30') + self.assertEqual(b, b'\x1a\x2b\x30') + self.assertIs(type(b), B2) + self.assertEqual(b.foo, 'bar') class ByteArraySubclass(bytearray): |