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# -*- Mode: Python -*-
# encoding: UTF-8
from __future__ import unicode_literals
import unittest
import tempfile
import os.path
import fcntl
import shutil
import warnings
from gi.repository import GLib
from gi import PyGIDeprecationWarning
from compathelper import _unicode
class IOChannel(unittest.TestCase):
def setUp(self):
self.workdir = tempfile.mkdtemp()
self.testutf8 = os.path.join(self.workdir, 'testutf8.txt')
with open(self.testutf8, 'wb') as f:
f.write('''hello ♥ world
second line
À demain!'''.encode('UTF-8'))
self.testlatin1 = os.path.join(self.workdir, 'testlatin1.txt')
with open(self.testlatin1, 'wb') as f:
f.write(b'''hell\xf8 world
second line
\xc0 demain!''')
self.testout = os.path.join(self.workdir, 'testout.txt')
def tearDown(self):
shutil.rmtree(self.workdir)
def test_file_readline_utf8(self):
ch = GLib.IOChannel(filename=self.testutf8)
self.assertEqual(ch.get_encoding(), 'UTF-8')
self.assertTrue(ch.get_close_on_unref())
self.assertEqual(_unicode(ch.readline()), 'hello ♥ world\n')
self.assertEqual(ch.get_buffer_condition(), GLib.IOCondition.IN)
self.assertEqual(ch.readline(), 'second line\n')
self.assertEqual(ch.readline(), '\n')
self.assertEqual(_unicode(ch.readline()), 'À demain!')
self.assertEqual(ch.get_buffer_condition(), 0)
self.assertEqual(ch.readline(), '')
ch.close()
def test_file_readline_latin1(self):
ch = GLib.IOChannel(filename=self.testlatin1, mode='r')
ch.set_encoding('latin1')
self.assertEqual(ch.get_encoding(), 'latin1')
self.assertEqual(_unicode(ch.readline()), 'hellø world\n')
self.assertEqual(ch.readline(), 'second line\n')
self.assertEqual(ch.readline(), '\n')
self.assertEqual(_unicode(ch.readline()), 'À demain!')
ch.close()
def test_file_iter(self):
items = []
ch = GLib.IOChannel(filename=self.testutf8)
for item in ch:
items.append(item)
self.assertEqual(len(items), 4)
self.assertEqual(_unicode(items[0]), 'hello ♥ world\n')
ch.close()
def test_file_readlines(self):
ch = GLib.IOChannel(filename=self.testutf8)
lines = ch.readlines()
# Note, this really ought to be 4, but the static bindings add an extra
# empty one
self.assertGreaterEqual(len(lines), 4)
self.assertLessEqual(len(lines), 5)
self.assertEqual(_unicode(lines[0]), 'hello ♥ world\n')
self.assertEqual(_unicode(lines[3]), 'À demain!')
if len(lines) == 4:
self.assertEqual(lines[4], '')
def test_file_read(self):
ch = GLib.IOChannel(filename=self.testutf8)
with open(self.testutf8, 'rb') as f:
self.assertEqual(ch.read(), f.read())
ch = GLib.IOChannel(filename=self.testutf8)
with open(self.testutf8, 'rb') as f:
self.assertEqual(ch.read(10), f.read(10))
ch = GLib.IOChannel(filename=self.testutf8)
with open(self.testutf8, 'rb') as f:
self.assertEqual(ch.read(max_count=15), f.read(15))
def test_seek(self):
ch = GLib.IOChannel(filename=self.testutf8)
ch.seek(2)
self.assertEqual(ch.read(3), b'llo')
ch.seek(2, 0) # SEEK_SET
self.assertEqual(ch.read(3), b'llo')
ch.seek(1, 1) # SEEK_CUR, skip the space
self.assertEqual(ch.read(3), b'\xe2\x99\xa5')
ch.seek(2, 2) # SEEK_END
# FIXME: does not work currently
#self.assertEqual(ch.read(2), b'n!')
# invalid whence value
self.assertRaises(ValueError, ch.seek, 0, 3)
def test_file_write(self):
ch = GLib.IOChannel(filename=self.testout, mode='w')
ch.set_encoding('latin1')
ch.write('hellø world\n')
ch.close()
ch = GLib.IOChannel(filename=self.testout, mode='a')
ch.set_encoding('latin1')
ch.write('À demain!')
ch.close()
with open(self.testout, 'rb') as f:
self.assertEqual(f.read().decode('latin1'), 'hellø world\nÀ demain!')
def test_file_writelines(self):
ch = GLib.IOChannel(filename=self.testout, mode='w')
ch.writelines(['foo', 'bar\n', 'baz\n', 'end'])
ch.close()
with open(self.testout, 'r') as f:
self.assertEqual(f.read(), 'foobar\nbaz\nend')
def test_buffering(self):
writer = GLib.IOChannel(filename=self.testout, mode='w')
writer.set_encoding(None)
self.assertTrue(writer.get_buffered())
self.assertGreater(writer.get_buffer_size(), 10)
reader = GLib.IOChannel(filename=self.testout, mode='r')
# does not get written immediately on buffering
writer.write('abc')
self.assertEqual(reader.read(), b'')
writer.flush()
self.assertEqual(reader.read(), b'abc')
# does get written immediately without buffering
writer.set_buffered(False)
writer.write('def')
self.assertEqual(reader.read(), b'def')
# writes after buffer overflow
writer.set_buffer_size(10)
writer.write('0123456789012')
self.assertTrue(reader.read().startswith(b'012'))
writer.flush()
reader.read() # ignore bits written after flushing
# closing flushes
writer.set_buffered(True)
writer.write('ghi')
writer.close()
self.assertEqual(reader.read(), b'ghi')
reader.close()
def test_fd_read(self):
(r, w) = os.pipe()
ch = GLib.IOChannel(filedes=r)
ch.set_encoding(None)
ch.set_flags(ch.get_flags() | GLib.IOFlags.NONBLOCK)
self.assertNotEqual(ch.get_flags() | GLib.IOFlags.NONBLOCK, 0)
self.assertEqual(ch.read(), b'')
os.write(w, b'\x01\x02')
self.assertEqual(ch.read(), b'\x01\x02')
# now test blocking case, after closing the write end
ch.set_flags(GLib.IOFlags(ch.get_flags() & ~GLib.IOFlags.NONBLOCK))
os.write(w, b'\x03\x04')
os.close(w)
self.assertEqual(ch.read(), b'\x03\x04')
ch.close()
def test_fd_write(self):
(r, w) = os.pipe()
fcntl.fcntl(r, fcntl.F_SETFL, fcntl.fcntl(r, fcntl.F_GETFL) | os.O_NONBLOCK)
ch = GLib.IOChannel(filedes=w, mode='w')
ch.set_encoding(None)
ch.set_buffered(False)
ch.write(b'\x01\x02')
self.assertEqual(os.read(r, 10), b'\x01\x02')
# now test blocking case, after closing the write end
fcntl.fcntl(r, fcntl.F_SETFL, fcntl.fcntl(r, fcntl.F_GETFL) & ~os.O_NONBLOCK)
ch.write(b'\x03\x04')
ch.close()
self.assertEqual(os.read(r, 10), b'\x03\x04')
os.close(r)
def test_deprecated_method_add_watch_no_data(self):
(r, w) = os.pipe()
ch = GLib.IOChannel(filedes=r)
ch.set_encoding(None)
ch.set_flags(ch.get_flags() | GLib.IOFlags.NONBLOCK)
cb_reads = []
def cb(channel, condition):
self.assertEqual(channel, ch)
self.assertEqual(condition, GLib.IOCondition.IN)
cb_reads.append(channel.read())
return True
# io_add_watch() method is deprecated, use GLib.io_add_watch
with warnings.catch_warnings(record=True) as warn:
warnings.simplefilter('always')
ch.add_watch(GLib.IOCondition.IN, cb)
self.assertTrue(issubclass(warn[0].category, PyGIDeprecationWarning))
ml = GLib.MainLoop()
GLib.timeout_add(10, lambda: os.write(w, b'a') and False)
GLib.timeout_add(100, lambda: os.write(w, b'b') and False)
GLib.timeout_add(200, ml.quit)
ml.run()
self.assertEqual(cb_reads, [b'a', b'b'])
def test_deprecated_method_add_watch_data_priority(self):
(r, w) = os.pipe()
ch = GLib.IOChannel(filedes=r)
ch.set_encoding(None)
ch.set_flags(ch.get_flags() | GLib.IOFlags.NONBLOCK)
cb_reads = []
def cb(channel, condition, data):
self.assertEqual(channel, ch)
self.assertEqual(condition, GLib.IOCondition.IN)
self.assertEqual(data, 'hello')
cb_reads.append(channel.read())
return True
ml = GLib.MainLoop()
# io_add_watch() method is deprecated, use GLib.io_add_watch
with warnings.catch_warnings(record=True) as warn:
warnings.simplefilter('always')
id = ch.add_watch(GLib.IOCondition.IN, cb, 'hello', priority=GLib.PRIORITY_HIGH)
self.assertTrue(issubclass(warn[0].category, PyGIDeprecationWarning))
self.assertEqual(ml.get_context().find_source_by_id(id).priority,
GLib.PRIORITY_HIGH)
GLib.timeout_add(10, lambda: os.write(w, b'a') and False)
GLib.timeout_add(100, lambda: os.write(w, b'b') and False)
GLib.timeout_add(200, ml.quit)
ml.run()
self.assertEqual(cb_reads, [b'a', b'b'])
def test_add_watch_no_data(self):
(r, w) = os.pipe()
ch = GLib.IOChannel(filedes=r)
ch.set_encoding(None)
ch.set_flags(ch.get_flags() | GLib.IOFlags.NONBLOCK)
cb_reads = []
def cb(channel, condition):
self.assertEqual(channel, ch)
self.assertEqual(condition, GLib.IOCondition.IN)
cb_reads.append(channel.read())
return True
id = GLib.io_add_watch(ch, GLib.PRIORITY_HIGH, GLib.IOCondition.IN, cb)
ml = GLib.MainLoop()
self.assertEqual(ml.get_context().find_source_by_id(id).priority,
GLib.PRIORITY_HIGH)
GLib.timeout_add(10, lambda: os.write(w, b'a') and False)
GLib.timeout_add(100, lambda: os.write(w, b'b') and False)
GLib.timeout_add(200, ml.quit)
ml.run()
self.assertEqual(cb_reads, [b'a', b'b'])
def test_add_watch_with_data(self):
(r, w) = os.pipe()
ch = GLib.IOChannel(filedes=r)
ch.set_encoding(None)
ch.set_flags(ch.get_flags() | GLib.IOFlags.NONBLOCK)
cb_reads = []
def cb(channel, condition, data):
self.assertEqual(channel, ch)
self.assertEqual(condition, GLib.IOCondition.IN)
self.assertEqual(data, 'hello')
cb_reads.append(channel.read())
return True
id = GLib.io_add_watch(ch, GLib.PRIORITY_HIGH, GLib.IOCondition.IN, cb, 'hello')
ml = GLib.MainLoop()
self.assertEqual(ml.get_context().find_source_by_id(id).priority,
GLib.PRIORITY_HIGH)
GLib.timeout_add(10, lambda: os.write(w, b'a') and False)
GLib.timeout_add(100, lambda: os.write(w, b'b') and False)
GLib.timeout_add(200, ml.quit)
ml.run()
self.assertEqual(cb_reads, [b'a', b'b'])
def test_add_watch_with_multi_data(self):
(r, w) = os.pipe()
ch = GLib.IOChannel(filedes=r)
ch.set_encoding(None)
ch.set_flags(ch.get_flags() | GLib.IOFlags.NONBLOCK)
cb_reads = []
def cb(channel, condition, data1, data2, data3):
self.assertEqual(channel, ch)
self.assertEqual(condition, GLib.IOCondition.IN)
self.assertEqual(data1, 'a')
self.assertEqual(data2, 'b')
self.assertEqual(data3, 'c')
cb_reads.append(channel.read())
return True
id = GLib.io_add_watch(ch, GLib.PRIORITY_HIGH, GLib.IOCondition.IN, cb,
'a', 'b', 'c')
ml = GLib.MainLoop()
self.assertEqual(ml.get_context().find_source_by_id(id).priority,
GLib.PRIORITY_HIGH)
GLib.timeout_add(10, lambda: os.write(w, b'a') and False)
GLib.timeout_add(100, lambda: os.write(w, b'b') and False)
GLib.timeout_add(200, ml.quit)
ml.run()
self.assertEqual(cb_reads, [b'a', b'b'])
def test_deprecated_add_watch_no_data(self):
(r, w) = os.pipe()
ch = GLib.IOChannel(filedes=r)
ch.set_encoding(None)
ch.set_flags(ch.get_flags() | GLib.IOFlags.NONBLOCK)
cb_reads = []
def cb(channel, condition):
self.assertEqual(channel, ch)
self.assertEqual(condition, GLib.IOCondition.IN)
cb_reads.append(channel.read())
return True
with warnings.catch_warnings(record=True) as warn:
warnings.simplefilter('always')
id = GLib.io_add_watch(ch, GLib.IOCondition.IN, cb, priority=GLib.PRIORITY_HIGH)
self.assertTrue(issubclass(warn[0].category, PyGIDeprecationWarning))
ml = GLib.MainLoop()
self.assertEqual(ml.get_context().find_source_by_id(id).priority,
GLib.PRIORITY_HIGH)
GLib.timeout_add(10, lambda: os.write(w, b'a') and False)
GLib.timeout_add(100, lambda: os.write(w, b'b') and False)
GLib.timeout_add(200, ml.quit)
ml.run()
self.assertEqual(cb_reads, [b'a', b'b'])
def test_deprecated_add_watch_with_data(self):
(r, w) = os.pipe()
ch = GLib.IOChannel(filedes=r)
ch.set_encoding(None)
ch.set_flags(ch.get_flags() | GLib.IOFlags.NONBLOCK)
cb_reads = []
def cb(channel, condition, data):
self.assertEqual(channel, ch)
self.assertEqual(condition, GLib.IOCondition.IN)
self.assertEqual(data, 'hello')
cb_reads.append(channel.read())
return True
with warnings.catch_warnings(record=True) as warn:
warnings.simplefilter('always')
id = GLib.io_add_watch(ch, GLib.IOCondition.IN, cb, 'hello',
priority=GLib.PRIORITY_HIGH)
self.assertTrue(issubclass(warn[0].category, PyGIDeprecationWarning))
ml = GLib.MainLoop()
self.assertEqual(ml.get_context().find_source_by_id(id).priority,
GLib.PRIORITY_HIGH)
GLib.timeout_add(10, lambda: os.write(w, b'a') and False)
GLib.timeout_add(100, lambda: os.write(w, b'b') and False)
GLib.timeout_add(200, ml.quit)
ml.run()
self.assertEqual(cb_reads, [b'a', b'b'])
def test_backwards_compat_flags(self):
self.assertEqual(GLib.IOCondition.IN, GLib.IO_IN)
self.assertEqual(GLib.IOFlags.NONBLOCK, GLib.IO_FLAG_NONBLOCK)
self.assertEqual(GLib.IOFlags.IS_SEEKABLE, GLib.IO_FLAG_IS_SEEKABLE)
self.assertEqual(GLib.IOStatus.NORMAL, GLib.IO_STATUS_NORMAL)
if __name__ == '__main__':
unittest.main()
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