test_rosparam_command_line_offline.py

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#!/usr/bin/env python
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# Revision $Id: test_rosparam_command_line_offline.py 5710 2009-08-20 03:11:04Z sfkwc $

import os
import sys 
import unittest
import cStringIO
import time
        
from subprocess import Popen, PIPE, check_call, call

import rosparam

def get_test_path():
    return os.path.abspath(os.path.join(os.path.dirname(__file__)))

class TestRosparamOffline(unittest.TestCase):

    def setUp(self):
        pass

    ## test that the rosmsg command works
    def test_cmd_help(self):
        cmd = 'rosparam'
        sub = ['set', 'get', 'load', 'dump', 'delete', 'list']
            
        output = Popen([cmd], stdout=PIPE).communicate()[0]
        self.assert_('Commands' in output, output)
        output = Popen([cmd, '-h'], stdout=PIPE).communicate()[0]
        self.assert_('Commands' in output)

        for c in sub:
            # make sure command is in usage statement
            self.assert_("%s %s"%(cmd, c) in output)
        
        for c in sub:
            output = Popen([cmd, c, '-h'], stdout=PIPE, stderr=PIPE).communicate()
            self.assert_("Usage:" in output[0], "%s\n%s"%(output, c))
            self.assert_("%s %s"%(cmd, c) in output[0], "%s: %s"%(c, output[0]))
            
        # test no args on commands that require args
        for c in ['set', 'get', 'load', 'dump', 'delete']:
            output = Popen([cmd, c], stdout=PIPE, stderr=PIPE).communicate()
            self.assert_("Usage:" in output[0] or "Usage:" in output[1], "%s\n%s"%(output, c))
            self.assert_("%s %s"%(cmd, c) in output[1])
            
    def test_offline(self):
        cmd = 'rosparam'

        # point at a different 'master'
        env = os.environ.copy()
        env['ROS_MASTER_URI'] = 'http://localhost:11312'
        kwds = { 'env': env, 'stdout': PIPE, 'stderr': PIPE}

        msg = "ERROR: Unable to communicate with master!\n"

        output = Popen([cmd, 'list'], **kwds).communicate()
        self.assert_(output[1].endswith(msg))
        output = Popen([cmd, 'set', 'foo', '1.0'], **kwds).communicate()
        self.assert_(output[1].endswith(msg))
        output = Popen([cmd, 'get', 'foo'], **kwds).communicate()
        self.assert_(output[1].endswith(msg))
        # have to test with actual file to avoid error
        path = os.path.join(get_test_path(), 'test.yaml')
        output = Popen([cmd, 'load', path], **kwds).communicate()
        self.assert_(output[1].endswith(msg))

        # test with file that does not exist
        output = Popen([cmd, 'load', 'fake.yaml'], **kwds).communicate()
        self.assertEquals('ERROR: file [fake.yaml] does not exist\n', output[1])
        
        output = Popen([cmd, 'dump', 'foo.yaml'], **kwds).communicate()
        self.assert_(output[1].endswith(msg))
        output = Popen([cmd, 'delete', 'foo'], **kwds).communicate()
        self.assert_(output[1].endswith(msg))