test_client_param_server.py
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00001 #!/usr/bin/env python
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00033 
00034 ## Unit test of rospy.client APIs for parameter server access
00035 
00036 PKG = 'test_rospy'
00037 NAME = 'test_rospy_client_param_server'
00038 
00039 import sys, time
00040 import math
00041 import unittest
00042 
00043 import rospy
00044 import rostest
00045 from test_rospy.srv import *
00046 
00047 def test_param_filter(params):
00048     return [p for p in params if not p.startswith('/roslaunch') and p not in ['/run_id', '/rosdistro', '/rosversion']]
00049 
00050 ## Test the rospy.client parameter server API: 
00051 ##- get_param
00052 ##- set_param
00053 ##- delete_param
00054 ##- has_param
00055 ##- get_param_names
00056 class TestClientParamServer(unittest.TestCase):
00057     
00058     ## test get/has param against state initialized from rostest script
00059     def test_get_has_param(self):
00060         #test error conditions
00061         try: rospy.get_param(None); self.fail("get_param(None) succeeded")
00062         except: pass
00063         try: rospy.get_param(''); self.fail("get_param('') succeeded")
00064         except: pass
00065         # should be keyerror
00066         try: rospy.get_param('non-existent'); self.fail("get_param('non-existent') succeeded")
00067         except: pass
00068         try: rospy.has_param(None, 'foo'); self.fail("has_param(None) succeeded")
00069         except: pass
00070         try: rospy.has_param(''); self.fail("has_param('') succeeded")
00071         except: pass
00072 
00073         self.failIf(rospy.has_param('non-existent'), "has_param('non-existent') succeeded")
00074             
00075         #validate get_param against values on the param server
00076         rostest_tests = {
00077             'string': "string",
00078             'int0': 0,
00079             'int10': 10,
00080             'float0': 0.0,
00081             'float10': 10.0,
00082             "namespace/string": "namespaced string",
00083             }
00084         param_names = [rospy.resolve_name(k) for k in rostest_tests.keys()]
00085         
00086         # test get parameter names
00087         diff = set(param_names) ^ set(test_param_filter(rospy.get_param_names()))
00088         self.failIf(diff, diff)
00089         
00090         # test for existing and value
00091         for k, v in rostest_tests.iteritems():
00092             self.assert_(rospy.has_param(k))
00093             self.assert_(rospy.has_param(rospy.resolve_name(k)))            
00094             if not type(v) == float:
00095                 self.assertEqual(v, rospy.get_param(k))
00096                 self.assertEqual(v, rospy.get_param(rospy.resolve_name(k)))                
00097             else:
00098                 self.assertAlmostEqual(v, rospy.get_param(k), 1)
00099                 self.assertAlmostEqual(v, rospy.get_param(rospy.resolve_name(k)), 1)                
00100                 
00101     def test_search_param(self):
00102         try:
00103             orig_caller_id = rospy.names.get_caller_id()
00104 
00105             rospy.names._set_caller_id('/global_node')
00106             
00107             self.assertEquals(None, rospy.search_param('search_param'))
00108             rospy.set_param('/search_param', 1)
00109             self.assertEquals('/search_param', rospy.search_param('search_param'))
00110 
00111             rospy.names._set_caller_id('/level1/level2/relative_node')
00112             self.assertEquals('/search_param', rospy.search_param('search_param'))
00113             rospy.set_param('/level1/search_param', 2)
00114             self.assertEquals('/level1/search_param', rospy.search_param('search_param'))
00115             rospy.set_param('~search_param', 3)
00116             # make sure that search starts in our private namespace first
00117             self.assertEquals('/level1/level2/relative_node/search_param', rospy.search_param('search_param')) 
00118             
00119         finally:
00120             rospy.names._set_caller_id(orig_caller_id)
00121 
00122     def test_delete_param(self):
00123         try: rospy.delete_param(None); self.fail("delete_param(None) succeeded")
00124         except: pass
00125         try: rospy.delete_param(''); self.fail("delete_param('') succeeded")
00126         except: pass
00127 
00128         rostest_tests = {
00129             'dpstring': "string",
00130             'dpint0': 0,
00131             'dpint10': 10,
00132             'dpfloat0': 0.0,
00133             'dpfloat10': 10.0,
00134             "dpnamespace/string": "namespaced string",
00135             }
00136         initial_params = rospy.get_param_names()
00137         # implicitly depends on set param
00138         for k, v in rostest_tests.iteritems():
00139             rospy.set_param(k, v)
00140         
00141         # test delete
00142         for k, v in rostest_tests.iteritems():
00143             self.assert_(rospy.has_param(k))
00144             rospy.delete_param(k)
00145             self.failIf(rospy.has_param(k))
00146             self.failIf(rospy.has_param(rospy.resolve_name(k)))
00147             try:
00148                 rospy.get_param(k)
00149                 self.fail("get_param should fail on deleted key")
00150             except KeyError: pass
00151             
00152         # make sure no new state
00153         self.failIf(set(initial_params) ^ set(rospy.get_param_names()))
00154         
00155     ## test set_param separately
00156     def test_set_param(self):
00157         try: rospy.set_param(None, 'foo'); self.fail("set_param(None) succeeded")
00158         except: pass
00159         try: rospy.set_param('', 'foo'); self.fail("set_param('') succeeded")
00160         except: pass
00161 
00162         rostest_tests = {
00163             'spstring': "string",
00164             'spint0': 0,
00165             'spint10': 10,
00166             'spfloat0': 0.0,
00167             'spfloat10': 10.0,
00168             "spnamespace/string": "namespaced string",
00169             }
00170         initial_param_names = rospy.get_param_names()
00171         param_names = [rospy.resolve_name(k) for k in rostest_tests.keys()]
00172         for k, v in rostest_tests.iteritems():
00173             self.failIf(rospy.has_param(k))
00174             self.failIf(rospy.has_param(rospy.resolve_name(k)))
00175             rospy.set_param(k, v)
00176             self.assert_(rospy.has_param(k))
00177             self.assert_(rospy.has_param(rospy.resolve_name(k)))
00178             self.assertEquals(v, rospy.get_param(k))            
00179             self.assertEquals(v, rospy.get_param(rospy.resolve_name(k)))
00180         correct_state = set(initial_param_names + param_names)
00181         self.failIf(correct_state ^ set(rospy.get_param_names()))
00182         
00183 if __name__ == '__main__':
00184     rospy.init_node(NAME)
00185     rostest.run(PKG, NAME, TestClientParamServer, sys.argv)


test_rospy
Author(s): Ken Conley
autogenerated on Mon Oct 6 2014 11:47:19