/lib-python/modified-2.7/test/test_memoryio.py
Python | 707 lines | 683 code | 20 blank | 4 comment | 0 complexity | 559d6d275d431f639ce449cedf7be99f MD5 | raw file
- """Unit tests for memory-based file-like objects.
- StringIO -- for unicode strings
- BytesIO -- for bytes
- """
- from __future__ import unicode_literals
- from __future__ import print_function
- import unittest
- from test import test_support as support
- import io
- import _pyio as pyio
- import pickle
- class MemorySeekTestMixin:
- def testInit(self):
- buf = self.buftype("1234567890")
- bytesIo = self.ioclass(buf)
- def testRead(self):
- buf = self.buftype("1234567890")
- bytesIo = self.ioclass(buf)
- self.assertEqual(buf[:1], bytesIo.read(1))
- self.assertEqual(buf[1:5], bytesIo.read(4))
- self.assertEqual(buf[5:], bytesIo.read(900))
- self.assertEqual(self.EOF, bytesIo.read())
- def testReadNoArgs(self):
- buf = self.buftype("1234567890")
- bytesIo = self.ioclass(buf)
- self.assertEqual(buf, bytesIo.read())
- self.assertEqual(self.EOF, bytesIo.read())
- def testSeek(self):
- buf = self.buftype("1234567890")
- bytesIo = self.ioclass(buf)
- bytesIo.read(5)
- bytesIo.seek(0)
- self.assertEqual(buf, bytesIo.read())
- bytesIo.seek(3)
- self.assertEqual(buf[3:], bytesIo.read())
- self.assertRaises(TypeError, bytesIo.seek, 0.0)
- def testTell(self):
- buf = self.buftype("1234567890")
- bytesIo = self.ioclass(buf)
- self.assertEqual(0, bytesIo.tell())
- bytesIo.seek(5)
- self.assertEqual(5, bytesIo.tell())
- bytesIo.seek(10000)
- self.assertEqual(10000, bytesIo.tell())
- class MemoryTestMixin:
- def test_detach(self):
- buf = self.ioclass()
- self.assertRaises(self.UnsupportedOperation, buf.detach)
- def write_ops(self, f, t):
- self.assertEqual(f.write(t("blah.")), 5)
- self.assertEqual(f.seek(0), 0)
- self.assertEqual(f.write(t("Hello.")), 6)
- self.assertEqual(f.tell(), 6)
- self.assertEqual(f.seek(5), 5)
- self.assertEqual(f.tell(), 5)
- self.assertEqual(f.write(t(" world\n\n\n")), 9)
- self.assertEqual(f.seek(0), 0)
- self.assertEqual(f.write(t("h")), 1)
- self.assertEqual(f.truncate(12), 12)
- self.assertEqual(f.tell(), 1)
- def test_write(self):
- buf = self.buftype("hello world\n")
- memio = self.ioclass(buf)
- self.write_ops(memio, self.buftype)
- self.assertEqual(memio.getvalue(), buf)
- memio = self.ioclass()
- self.write_ops(memio, self.buftype)
- self.assertEqual(memio.getvalue(), buf)
- self.assertRaises(TypeError, memio.write, None)
- memio.close()
- self.assertRaises(ValueError, memio.write, self.buftype(""))
- def test_writelines(self):
- buf = self.buftype("1234567890")
- memio = self.ioclass()
- self.assertEqual(memio.writelines([buf] * 100), None)
- self.assertEqual(memio.getvalue(), buf * 100)
- memio.writelines([])
- self.assertEqual(memio.getvalue(), buf * 100)
- memio = self.ioclass()
- self.assertRaises(TypeError, memio.writelines, [buf] + [1])
- self.assertEqual(memio.getvalue(), buf)
- self.assertRaises(TypeError, memio.writelines, None)
- memio.close()
- self.assertRaises(ValueError, memio.writelines, [])
- def test_writelines_error(self):
- memio = self.ioclass()
- def error_gen():
- yield self.buftype('spam')
- raise KeyboardInterrupt
- self.assertRaises(KeyboardInterrupt, memio.writelines, error_gen())
- def test_truncate(self):
- buf = self.buftype("1234567890")
- memio = self.ioclass(buf)
- self.assertRaises(ValueError, memio.truncate, -1)
- memio.seek(6)
- self.assertEqual(memio.truncate(), 6)
- self.assertEqual(memio.getvalue(), buf[:6])
- self.assertEqual(memio.truncate(4), 4)
- self.assertEqual(memio.getvalue(), buf[:4])
- # truncate() accepts long objects
- self.assertEqual(memio.truncate(4L), 4)
- self.assertEqual(memio.getvalue(), buf[:4])
- self.assertEqual(memio.tell(), 6)
- memio.seek(0, 2)
- memio.write(buf)
- self.assertEqual(memio.getvalue(), buf[:4] + buf)
- pos = memio.tell()
- self.assertEqual(memio.truncate(None), pos)
- self.assertEqual(memio.tell(), pos)
- self.assertRaises(TypeError, memio.truncate, '0')
- memio.close()
- self.assertRaises(ValueError, memio.truncate, 0)
- def test_init(self):
- buf = self.buftype("1234567890")
- memio = self.ioclass(buf)
- self.assertEqual(memio.getvalue(), buf)
- memio = self.ioclass(None)
- self.assertEqual(memio.getvalue(), self.EOF)
- memio.__init__(buf * 2)
- self.assertEqual(memio.getvalue(), buf * 2)
- memio.__init__(buf)
- self.assertEqual(memio.getvalue(), buf)
- def test_read(self):
- buf = self.buftype("1234567890")
- memio = self.ioclass(buf)
- self.assertEqual(memio.read(0), self.EOF)
- self.assertEqual(memio.read(1), buf[:1])
- # read() accepts long objects
- self.assertEqual(memio.read(4L), buf[1:5])
- self.assertEqual(memio.read(900), buf[5:])
- self.assertEqual(memio.read(), self.EOF)
- memio.seek(0)
- self.assertEqual(memio.read(), buf)
- self.assertEqual(memio.read(), self.EOF)
- self.assertEqual(memio.tell(), 10)
- memio.seek(0)
- self.assertEqual(memio.read(-1), buf)
- memio.seek(0)
- self.assertEqual(type(memio.read()), type(buf))
- memio.seek(100)
- self.assertEqual(type(memio.read()), type(buf))
- memio.seek(0)
- self.assertEqual(memio.read(None), buf)
- self.assertRaises(TypeError, memio.read, '')
- memio.close()
- self.assertRaises(ValueError, memio.read)
- def test_readline(self):
- buf = self.buftype("1234567890\n")
- memio = self.ioclass(buf * 2)
- self.assertEqual(memio.readline(0), self.EOF)
- self.assertEqual(memio.readline(), buf)
- self.assertEqual(memio.readline(), buf)
- self.assertEqual(memio.readline(), self.EOF)
- memio.seek(0)
- self.assertEqual(memio.readline(5), buf[:5])
- # readline() accepts long objects
- self.assertEqual(memio.readline(5L), buf[5:10])
- self.assertEqual(memio.readline(5), buf[10:15])
- memio.seek(0)
- self.assertEqual(memio.readline(-1), buf)
- memio.seek(0)
- self.assertEqual(memio.readline(0), self.EOF)
- buf = self.buftype("1234567890\n")
- memio = self.ioclass((buf * 3)[:-1])
- self.assertEqual(memio.readline(), buf)
- self.assertEqual(memio.readline(), buf)
- self.assertEqual(memio.readline(), buf[:-1])
- self.assertEqual(memio.readline(), self.EOF)
- memio.seek(0)
- self.assertEqual(type(memio.readline()), type(buf))
- self.assertEqual(memio.readline(), buf)
- self.assertRaises(TypeError, memio.readline, '')
- memio.close()
- self.assertRaises(ValueError, memio.readline)
- def test_readlines(self):
- buf = self.buftype("1234567890\n")
- memio = self.ioclass(buf * 10)
- self.assertEqual(memio.readlines(), [buf] * 10)
- memio.seek(5)
- self.assertEqual(memio.readlines(), [buf[5:]] + [buf] * 9)
- memio.seek(0)
- # readlines() accepts long objects
- self.assertEqual(memio.readlines(15L), [buf] * 2)
- memio.seek(0)
- self.assertEqual(memio.readlines(-1), [buf] * 10)
- memio.seek(0)
- self.assertEqual(memio.readlines(0), [buf] * 10)
- memio.seek(0)
- self.assertEqual(type(memio.readlines()[0]), type(buf))
- memio.seek(0)
- self.assertEqual(memio.readlines(None), [buf] * 10)
- self.assertRaises(TypeError, memio.readlines, '')
- memio.close()
- self.assertRaises(ValueError, memio.readlines)
- def test_iterator(self):
- buf = self.buftype("1234567890\n")
- memio = self.ioclass(buf * 10)
- self.assertEqual(iter(memio), memio)
- self.assertTrue(hasattr(memio, '__iter__'))
- self.assertTrue(hasattr(memio, 'next'))
- i = 0
- for line in memio:
- self.assertEqual(line, buf)
- i += 1
- self.assertEqual(i, 10)
- memio.seek(0)
- i = 0
- for line in memio:
- self.assertEqual(line, buf)
- i += 1
- self.assertEqual(i, 10)
- memio = self.ioclass(buf * 2)
- memio.close()
- self.assertRaises(ValueError, next, memio)
- def test_getvalue(self):
- buf = self.buftype("1234567890")
- memio = self.ioclass(buf)
- self.assertEqual(memio.getvalue(), buf)
- memio.read()
- self.assertEqual(memio.getvalue(), buf)
- self.assertEqual(type(memio.getvalue()), type(buf))
- memio = self.ioclass(buf * 1000)
- self.assertEqual(memio.getvalue()[-3:], self.buftype("890"))
- memio = self.ioclass(buf)
- memio.close()
- self.assertRaises(ValueError, memio.getvalue)
- def test_seek(self):
- buf = self.buftype("1234567890")
- memio = self.ioclass(buf)
- memio.read(5)
- self.assertRaises(ValueError, memio.seek, -1)
- self.assertRaises(ValueError, memio.seek, 1, -1)
- self.assertRaises(ValueError, memio.seek, 1, 3)
- self.assertEqual(memio.seek(0), 0)
- self.assertEqual(memio.seek(0, 0), 0)
- self.assertEqual(memio.read(), buf)
- self.assertEqual(memio.seek(3), 3)
- # seek() accepts long objects
- self.assertEqual(memio.seek(3L), 3)
- self.assertEqual(memio.seek(0, 1), 3)
- self.assertEqual(memio.read(), buf[3:])
- self.assertEqual(memio.seek(len(buf)), len(buf))
- self.assertEqual(memio.read(), self.EOF)
- memio.seek(len(buf) + 1)
- self.assertEqual(memio.read(), self.EOF)
- self.assertEqual(memio.seek(0, 2), len(buf))
- self.assertEqual(memio.read(), self.EOF)
- memio.close()
- self.assertRaises(ValueError, memio.seek, 0)
- def test_overseek(self):
- buf = self.buftype("1234567890")
- memio = self.ioclass(buf)
- self.assertEqual(memio.seek(len(buf) + 1), 11)
- self.assertEqual(memio.read(), self.EOF)
- self.assertEqual(memio.tell(), 11)
- self.assertEqual(memio.getvalue(), buf)
- memio.write(self.EOF)
- self.assertEqual(memio.getvalue(), buf)
- memio.write(buf)
- self.assertEqual(memio.getvalue(), buf + self.buftype('\0') + buf)
- def test_tell(self):
- buf = self.buftype("1234567890")
- memio = self.ioclass(buf)
- self.assertEqual(memio.tell(), 0)
- memio.seek(5)
- self.assertEqual(memio.tell(), 5)
- memio.seek(10000)
- self.assertEqual(memio.tell(), 10000)
- memio.close()
- self.assertRaises(ValueError, memio.tell)
- def test_flush(self):
- buf = self.buftype("1234567890")
- memio = self.ioclass(buf)
- self.assertEqual(memio.flush(), None)
- def test_flags(self):
- memio = self.ioclass()
- self.assertEqual(memio.writable(), True)
- self.assertEqual(memio.readable(), True)
- self.assertEqual(memio.seekable(), True)
- self.assertEqual(memio.isatty(), False)
- self.assertEqual(memio.closed, False)
- memio.close()
- self.assertEqual(memio.writable(), True)
- self.assertEqual(memio.readable(), True)
- self.assertEqual(memio.seekable(), True)
- self.assertRaises(ValueError, memio.isatty)
- self.assertEqual(memio.closed, True)
- def test_subclassing(self):
- buf = self.buftype("1234567890")
- def test1():
- class MemIO(self.ioclass):
- pass
- m = MemIO(buf)
- return m.getvalue()
- def test2():
- class MemIO(self.ioclass):
- def __init__(me, a, b):
- self.ioclass.__init__(me, a)
- m = MemIO(buf, None)
- return m.getvalue()
- self.assertEqual(test1(), buf)
- self.assertEqual(test2(), buf)
- def test_instance_dict_leak(self):
- # Test case for issue #6242.
- # This will be caught by regrtest.py -R if this leak.
- for _ in range(100):
- memio = self.ioclass()
- memio.foo = 1
- def test_pickling(self):
- buf = self.buftype("1234567890")
- memio = self.ioclass(buf)
- memio.foo = 42
- memio.seek(2)
- class PickleTestMemIO(self.ioclass):
- def __init__(me, initvalue, foo):
- self.ioclass.__init__(me, initvalue)
- me.foo = foo
- # __getnewargs__ is undefined on purpose. This checks that PEP 307
- # is used to provide pickling support.
- # Pickle expects the class to be on the module level. Here we use a
- # little hack to allow the PickleTestMemIO class to derive from
- # self.ioclass without having to define all combinations explicitly on
- # the module-level.
- import __main__
- PickleTestMemIO.__module__ = '__main__'
- __main__.PickleTestMemIO = PickleTestMemIO
- submemio = PickleTestMemIO(buf, 80)
- submemio.seek(2)
- # We only support pickle protocol 2 and onward since we use extended
- # __reduce__ API of PEP 307 to provide pickling support.
- for proto in range(2, pickle.HIGHEST_PROTOCOL):
- for obj in (memio, submemio):
- obj2 = pickle.loads(pickle.dumps(obj, protocol=proto))
- self.assertEqual(obj.getvalue(), obj2.getvalue())
- self.assertEqual(obj.__class__, obj2.__class__)
- self.assertEqual(obj.foo, obj2.foo)
- self.assertEqual(obj.tell(), obj2.tell())
- obj.close()
- self.assertRaises(ValueError, pickle.dumps, obj, proto)
- del __main__.PickleTestMemIO
- class PyBytesIOTest(MemoryTestMixin, MemorySeekTestMixin, unittest.TestCase):
- UnsupportedOperation = pyio.UnsupportedOperation
- @staticmethod
- def buftype(s):
- return s.encode("ascii")
- ioclass = pyio.BytesIO
- EOF = b""
- def test_read1(self):
- buf = self.buftype("1234567890")
- memio = self.ioclass(buf)
- self.assertRaises(TypeError, memio.read1)
- self.assertEqual(memio.read(), buf)
- def test_readinto(self):
- buf = self.buftype("1234567890")
- memio = self.ioclass(buf)
- b = bytearray(b"hello")
- self.assertEqual(memio.readinto(b), 5)
- self.assertEqual(b, b"12345")
- self.assertEqual(memio.readinto(b), 5)
- self.assertEqual(b, b"67890")
- self.assertEqual(memio.readinto(b), 0)
- self.assertEqual(b, b"67890")
- b = bytearray(b"hello world")
- memio.seek(0)
- self.assertEqual(memio.readinto(b), 10)
- self.assertEqual(b, b"1234567890d")
- b = bytearray(b"")
- memio.seek(0)
- self.assertEqual(memio.readinto(b), 0)
- self.assertEqual(b, b"")
- self.assertRaises(TypeError, memio.readinto, '')
- import array
- a = array.array(b'b', b"hello world")
- memio = self.ioclass(buf)
- memio.readinto(a)
- self.assertEqual(a.tostring(), b"1234567890d")
- memio.close()
- self.assertRaises(ValueError, memio.readinto, b)
- memio = self.ioclass(b"123")
- b = bytearray()
- memio.seek(42)
- memio.readinto(b)
- self.assertEqual(b, b"")
- def test_relative_seek(self):
- buf = self.buftype("1234567890")
- memio = self.ioclass(buf)
- self.assertEqual(memio.seek(-1, 1), 0)
- self.assertEqual(memio.seek(3, 1), 3)
- self.assertEqual(memio.seek(-4, 1), 0)
- self.assertEqual(memio.seek(-1, 2), 9)
- self.assertEqual(memio.seek(1, 1), 10)
- self.assertEqual(memio.seek(1, 2), 11)
- memio.seek(-3, 2)
- self.assertEqual(memio.read(), buf[-3:])
- memio.seek(0)
- memio.seek(1, 1)
- self.assertEqual(memio.read(), buf[1:])
- def test_unicode(self):
- memio = self.ioclass()
- self.assertRaises(TypeError, self.ioclass, "1234567890")
- self.assertRaises(TypeError, memio.write, "1234567890")
- self.assertRaises(TypeError, memio.writelines, ["1234567890"])
- def test_bytes_array(self):
- buf = b"1234567890"
- import array
- a = array.array(b'b', buf)
- memio = self.ioclass(a)
- self.assertEqual(memio.getvalue(), buf)
- self.assertEqual(memio.write(a), 10)
- self.assertEqual(memio.getvalue(), buf)
- def test_issue5449(self):
- buf = self.buftype("1234567890")
- self.ioclass(initial_bytes=buf)
- self.assertRaises(TypeError, self.ioclass, buf, foo=None)
- class TextIOTestMixin:
- def test_newlines_property(self):
- memio = self.ioclass(newline=None)
- # The C StringIO decodes newlines in write() calls, but the Python
- # implementation only does when reading. This function forces them to
- # be decoded for testing.
- def force_decode():
- memio.seek(0)
- memio.read()
- self.assertEqual(memio.newlines, None)
- memio.write("a\n")
- force_decode()
- self.assertEqual(memio.newlines, "\n")
- memio.write("b\r\n")
- force_decode()
- self.assertEqual(memio.newlines, ("\n", "\r\n"))
- memio.write("c\rd")
- force_decode()
- self.assertEqual(memio.newlines, ("\r", "\n", "\r\n"))
- def test_relative_seek(self):
- memio = self.ioclass()
- self.assertRaises(IOError, memio.seek, -1, 1)
- self.assertRaises(IOError, memio.seek, 3, 1)
- self.assertRaises(IOError, memio.seek, -3, 1)
- self.assertRaises(IOError, memio.seek, -1, 2)
- self.assertRaises(IOError, memio.seek, 1, 1)
- self.assertRaises(IOError, memio.seek, 1, 2)
- def test_textio_properties(self):
- memio = self.ioclass()
- # These are just dummy values but we nevertheless check them for fear
- # of unexpected breakage.
- self.assertIsNone(memio.encoding)
- self.assertIsNone(memio.errors)
- self.assertFalse(memio.line_buffering)
- def test_newline_none(self):
- # newline=None
- memio = self.ioclass("a\nb\r\nc\rd", newline=None)
- self.assertEqual(list(memio), ["a\n", "b\n", "c\n", "d"])
- memio.seek(0)
- self.assertEqual(memio.read(1), "a")
- self.assertEqual(memio.read(2), "\nb")
- self.assertEqual(memio.read(2), "\nc")
- self.assertEqual(memio.read(1), "\n")
- memio = self.ioclass(newline=None)
- self.assertEqual(2, memio.write("a\n"))
- self.assertEqual(3, memio.write("b\r\n"))
- self.assertEqual(3, memio.write("c\rd"))
- memio.seek(0)
- self.assertEqual(memio.read(), "a\nb\nc\nd")
- memio = self.ioclass("a\r\nb", newline=None)
- self.assertEqual(memio.read(3), "a\nb")
- def test_newline_empty(self):
- # newline=""
- memio = self.ioclass("a\nb\r\nc\rd", newline="")
- self.assertEqual(list(memio), ["a\n", "b\r\n", "c\r", "d"])
- memio.seek(0)
- self.assertEqual(memio.read(4), "a\nb\r")
- self.assertEqual(memio.read(2), "\nc")
- self.assertEqual(memio.read(1), "\r")
- memio = self.ioclass(newline="")
- self.assertEqual(2, memio.write("a\n"))
- self.assertEqual(2, memio.write("b\r"))
- self.assertEqual(2, memio.write("\nc"))
- self.assertEqual(2, memio.write("\rd"))
- memio.seek(0)
- self.assertEqual(list(memio), ["a\n", "b\r\n", "c\r", "d"])
- def test_newline_lf(self):
- # newline="\n"
- memio = self.ioclass("a\nb\r\nc\rd")
- self.assertEqual(list(memio), ["a\n", "b\r\n", "c\rd"])
- def test_newline_cr(self):
- # newline="\r"
- memio = self.ioclass("a\nb\r\nc\rd", newline="\r")
- self.assertEqual(memio.read(), "a\rb\r\rc\rd")
- memio.seek(0)
- self.assertEqual(list(memio), ["a\r", "b\r", "\r", "c\r", "d"])
- def test_newline_crlf(self):
- # newline="\r\n"
- memio = self.ioclass("a\nb\r\nc\rd", newline="\r\n")
- self.assertEqual(memio.read(), "a\r\nb\r\r\nc\rd")
- memio.seek(0)
- self.assertEqual(list(memio), ["a\r\n", "b\r\r\n", "c\rd"])
- def test_issue5265(self):
- # StringIO can duplicate newlines in universal newlines mode
- memio = self.ioclass("a\r\nb\r\n", newline=None)
- self.assertEqual(memio.read(5), "a\nb\n")
- class PyStringIOTest(MemoryTestMixin, MemorySeekTestMixin,
- TextIOTestMixin, unittest.TestCase):
- buftype = unicode
- ioclass = pyio.StringIO
- UnsupportedOperation = pyio.UnsupportedOperation
- EOF = ""
- class PyStringIOPickleTest(TextIOTestMixin, unittest.TestCase):
- """Test if pickle restores properly the internal state of StringIO.
- """
- buftype = unicode
- UnsupportedOperation = pyio.UnsupportedOperation
- EOF = ""
- class ioclass(pyio.StringIO):
- def __new__(cls, *args, **kwargs):
- return pickle.loads(pickle.dumps(pyio.StringIO(*args, **kwargs)))
- def __init__(self, *args, **kwargs):
- pass
- class CBytesIOTest(PyBytesIOTest):
- ioclass = io.BytesIO
- UnsupportedOperation = io.UnsupportedOperation
- test_bytes_array = unittest.skip(
- "array.array() does not have the new buffer API"
- )(PyBytesIOTest.test_bytes_array)
- def test_getstate(self):
- memio = self.ioclass()
- state = memio.__getstate__()
- self.assertEqual(len(state), 3)
- bytearray(state[0]) # Check if state[0] supports the buffer interface.
- self.assertIsInstance(state[1], (int, long))
- self.assertTrue(isinstance(state[2], dict) or state[2] is None)
- memio.close()
- self.assertRaises(ValueError, memio.__getstate__)
- def test_setstate(self):
- # This checks whether __setstate__ does proper input validation.
- memio = self.ioclass()
- memio.__setstate__((b"no error", 0, None))
- memio.__setstate__((bytearray(b"no error"), 0, None))
- memio.__setstate__((b"no error", 0, {'spam': 3}))
- self.assertRaises(ValueError, memio.__setstate__, (b"", -1, None))
- self.assertRaises(TypeError, memio.__setstate__, ("unicode", 0, None))
- self.assertRaises(TypeError, memio.__setstate__, (b"", 0.0, None))
- self.assertRaises(TypeError, memio.__setstate__, (b"", 0, 0))
- self.assertRaises(TypeError, memio.__setstate__, (b"len-test", 0))
- self.assertRaises(TypeError, memio.__setstate__)
- self.assertRaises(TypeError, memio.__setstate__, 0)
- memio.close()
- self.assertRaises(ValueError, memio.__setstate__, (b"closed", 0, None))
- class CStringIOTest(PyStringIOTest):
- ioclass = io.StringIO
- UnsupportedOperation = io.UnsupportedOperation
- # XXX: For the Python version of io.StringIO, this is highly
- # dependent on the encoding used for the underlying buffer.
- def test_widechar(self):
- buf = self.buftype("\U0002030a\U00020347")
- memio = self.ioclass(buf)
- self.assertEqual(memio.getvalue(), buf)
- self.assertEqual(memio.write(buf), len(buf))
- self.assertEqual(memio.tell(), len(buf))
- self.assertEqual(memio.getvalue(), buf)
- self.assertEqual(memio.write(buf), len(buf))
- self.assertEqual(memio.tell(), len(buf) * 2)
- self.assertEqual(memio.getvalue(), buf + buf)
- def test_getstate(self):
- memio = self.ioclass()
- state = memio.__getstate__()
- self.assertEqual(len(state), 4)
- self.assertIsInstance(state[0], unicode)
- self.assertIsInstance(state[1], str)
- self.assertIsInstance(state[2], int)
- self.assertTrue(isinstance(state[3], dict) or state[3] is None)
- memio.close()
- self.assertRaises(ValueError, memio.__getstate__)
- def test_setstate(self):
- # This checks whether __setstate__ does proper input validation.
- memio = self.ioclass()
- memio.__setstate__(("no error", "\n", 0, None))
- memio.__setstate__(("no error", "", 0, {'spam': 3}))
- self.assertRaises(ValueError, memio.__setstate__, ("", "f", 0, None))
- self.assertRaises(ValueError, memio.__setstate__, ("", "", -1, None))
- self.assertRaises(TypeError, memio.__setstate__, (b"", "", 0, None))
- # trunk is more tolerant than py3k on the type of the newline param
- #self.assertRaises(TypeError, memio.__setstate__, ("", b"", 0, None))
- self.assertRaises(TypeError, memio.__setstate__, ("", "", 0.0, None))
- self.assertRaises(TypeError, memio.__setstate__, ("", "", 0, 0))
- self.assertRaises(TypeError, memio.__setstate__, ("len-test", 0))
- self.assertRaises(TypeError, memio.__setstate__)
- self.assertRaises(TypeError, memio.__setstate__, 0)
- memio.close()
- self.assertRaises(ValueError, memio.__setstate__, ("closed", "", 0, None))
- class CStringIOPickleTest(PyStringIOPickleTest):
- UnsupportedOperation = io.UnsupportedOperation
- class ioclass(io.StringIO):
- def __new__(cls, *args, **kwargs):
- return pickle.loads(pickle.dumps(io.StringIO(*args, **kwargs),
- protocol=2))
- def __init__(self, *args, **kwargs):
- pass
- def test_main():
- tests = [PyBytesIOTest, PyStringIOTest, CBytesIOTest, CStringIOTest,
- PyStringIOPickleTest, CStringIOPickleTest]
- support.run_unittest(*tests)
- if __name__ == '__main__':
- test_main()