topic_count.py
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00001 #!/usr/bin/env python
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00034 
00035 import roslib
00036 roslib.load_manifest('rosbag')
00037 
00038 import unittest
00039 import rostest
00040 import sys
00041 import time
00042 import subprocess
00043 
00044 class TopicCount(unittest.TestCase):
00045 
00046   def test_topic_count(self):
00047     # Wait while the recorder creates a bag for us to examine
00048     time.sleep(10.0)
00049 
00050     # Check the topic count returned by `rosbag info`
00051     # We could probably do this through the rosbag Python API...
00052     cmd = ['rosbag', 'info', 
00053            '/tmp/test_rosbag_record_one_publisher_two_topics.bag',
00054            '-y', '-k', 'topics']
00055     p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
00056     out,err = p.communicate()
00057     topic_count = 0
00058     for l in out.split('\n'):
00059         f = l.strip().split(': ')
00060         if len(f) == 2 and f[0] == '- topic':
00061             topic_count += 1
00062 
00063     self.assertEqual(topic_count, 2)
00064 
00065 if __name__ == '__main__':
00066   rostest.unitrun('test_rosbag', 'topic_count', TopicCount, sys.argv)


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