blob: ee6ee0c3fb5a92f8fe68693fe5a96c1397077db6 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
# Copyright 1998-2011 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
from portage import os
from portage.tests import TestCase
from _emerge.PollScheduler import PollScheduler
from _emerge.PipeReader import PipeReader
from _emerge.SpawnProcess import SpawnProcess
class PipeReaderTestCase(TestCase):
def testPipeReader(self):
"""
Use a poll loop to read data from a pipe and assert that
the data written to the pipe is identical to the data
read from the pipe.
"""
test_string = 2 * "blah blah blah\n"
scheduler = PollScheduler().sched_iface
master_fd, slave_fd = os.pipe()
master_file = os.fdopen(master_fd, 'rb', 0)
slave_file = os.fdopen(slave_fd, 'wb')
producer = SpawnProcess(
args=["bash", "-c", "echo -n '%s'" % test_string],
env=os.environ, fd_pipes={1:slave_fd},
scheduler=scheduler)
producer.start()
slave_file.close()
consumer = PipeReader(
input_files={"producer" : master_file},
scheduler=scheduler)
consumer.start()
consumer.wait()
output = consumer.getvalue().decode('ascii', 'replace')
self.assertEqual(test_string, output)
|
