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()
