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-rw-r--r--lib/python2.7/test/test_memoryio.py717
1 files changed, 717 insertions, 0 deletions
diff --git a/lib/python2.7/test/test_memoryio.py b/lib/python2.7/test/test_memoryio.py
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+++ b/lib/python2.7/test/test_memoryio.py
@@ -0,0 +1,717 @@
+"""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.assertRaises(ValueError, memio.writable)
+ self.assertRaises(ValueError, memio.readable)
+ self.assertRaises(ValueError, memio.seekable)
+ 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)
+ 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))
+
+ check_sizeof = support.check_sizeof
+
+ @support.cpython_only
+ def test_sizeof(self):
+ basesize = support.calcobjsize(b'P2PP2P')
+ check = self.check_sizeof
+ self.assertEqual(object.__sizeof__(io.BytesIO()), basesize)
+ check(io.BytesIO(), basesize )
+ check(io.BytesIO(b'a'), basesize + 1 + 1 )
+ check(io.BytesIO(b'a' * 1000), basesize + 1000 + 1 )
+
+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()
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-03 05:24:58 +0000