diff -r ffa851df0825 -r 2fb8b9db1c86 symbian-qemu-0.9.1-12/python-2.6.1/Lib/test/test_memoryio.py --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/symbian-qemu-0.9.1-12/python-2.6.1/Lib/test/test_memoryio.py Fri Jul 31 15:01:17 2009 +0100 @@ -0,0 +1,416 @@ +"""Unit tests for memory-based file-like objects. +StringIO -- for unicode strings +BytesIO -- for bytes +""" + +from __future__ import unicode_literals + +import unittest +from test import test_support + +import io +import sys +import array + +try: + import _bytesio + has_c_implementation = True +except ImportError: + has_c_implementation = False + + +class MemoryTestMixin: + + 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(), 12) + + 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]) + self.assertEqual(memio.tell(), 4) + 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]) + self.assertEqual(memio.read(4), 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]) + self.assertEqual(memio.readline(5), 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(None), 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) + self.assertEqual(memio.readlines(15), [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.failUnless(hasattr(memio, '__iter__')) + self.failUnless(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, memio.next) + + 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) + 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) + + +class PyBytesIOTest(MemoryTestMixin, unittest.TestCase): + @staticmethod + def buftype(s): + return s.encode("ascii") + ioclass = io._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, '') + a = array.array(b'b', map(ord, b"hello world")) + memio = self.ioclass(buf) + memio.readinto(a) + self.assertEqual(a.tostring(), b"1234567890d") + memio.close() + self.assertRaises(ValueError, memio.readinto, 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" + + a = array.array(b'b', map(ord, buf)) + memio = self.ioclass(a) + self.assertEqual(memio.getvalue(), buf) + self.assertEqual(memio.write(a), 10) + self.assertEqual(memio.getvalue(), buf) + + +class PyStringIOTest(MemoryTestMixin, unittest.TestCase): + buftype = unicode + ioclass = io.StringIO + EOF = "" + + 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) + + # 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) + +if has_c_implementation: + class CBytesIOTest(PyBytesIOTest): + ioclass = io.BytesIO + +def test_main(): + tests = [PyBytesIOTest, PyStringIOTest] + if has_c_implementation: + tests.extend([CBytesIOTest]) + test_support.run_unittest(*tests) + +if __name__ == '__main__': + test_main()