connection_count.py
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00001 #!/usr/bin/env python
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00033 
00034 import unittest
00035 import rosunit
00036 import sys
00037 import time
00038 import subprocess
00039 
00040 class ConnectionCount(unittest.TestCase):
00041 
00042   def test_connection_count(self):
00043     # Wait while the recorder creates a bag for us to examine
00044     time.sleep(10.0)
00045 
00046     # Check the connection count returned by `rosbag info`
00047     # We could probably do this through the rosbag Python API...
00048     cmd = ['rosbag', 'info', 
00049            '/tmp/test_rosbag_record_two_publishers.bag',
00050            '-y', '-k', 'topics']
00051     p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
00052     out,err = p.communicate()
00053     self.assertEqual(p.returncode, 0, 'Failed to check bag\ncmd=%s\nstdout=%s\nstderr=%s'%(cmd,out,err))
00054 
00055     conns = False
00056     for l in out.split('\n'):
00057         f = l.strip().split(': ')
00058         if len(f) == 2 and f[0] == 'connections':
00059             conns = int(f[1])
00060             break
00061 
00062     self.assertEqual(conns, 2)
00063 
00064 if __name__ == '__main__':
00065   rosunit.unitrun('test_rosbag', 'connection_count', ConnectionCount, sys.argv)


test_rosbag
Author(s): Tim Field, Jeremy Leibs, James Bowman
autogenerated on Fri Aug 28 2015 12:34:27