test_add_two_ints.py

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#!/usr/bin/env python
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## Integration test for add_two_ints 

from __future__ import print_function

PKG = 'rospy_tutorials'
NAME = 'add_two_ints_test'

import sys
import unittest

import rospy
import rostest
from rospy_tutorials.srv import *

class TestAddTwoInts(unittest.TestCase):
        
    def test_add_two_ints(self):
        rospy.wait_for_service('add_two_ints')
        s = rospy.ServiceProxy('add_two_ints', AddTwoInts)
        tests = [(1, 2), (0, 0), (-1, -2), (12312, 980123), (sys.maxsize, -sys.maxsize), (sys.maxsize, -1), (sys.maxsize, 0)]
        for x, y in tests:
            print("Requesting %s+%s" % (x, y))
            # test both simple and formal call syntax
            resp = s(x, y)
            resp2 = s.call(AddTwoIntsRequest(x, y))
            self.assertEquals(resp.sum,resp2.sum)
            print("%s+%s = %s" % (x, y, resp.sum))
            self.assertEquals(resp.sum,(x + y), "integration failure, returned sum was %s vs. %s"%(resp.sum, (x+y)))

    def test_add_two_ints_bad_then_good(self):
        rospy.wait_for_service('add_two_ints')
        try:
            s = rospy.ServiceProxy('add_two_ints', BadTwoInts)            
            resp = s(1, 2)
            self.fail("service call should have failed with exception but instead returned 1+2=%s"%resp.sum)
        except rospy.ServiceException as e:
            print("success -- ros exception was thrown: %s" % e)
        s = rospy.ServiceProxy('add_two_ints', AddTwoInts)
        resp = s.call(AddTwoIntsRequest(1, 2))
        self.assertEquals(3,resp.sum)
        
            
    def test_add_two_ints_bad_type(self):
        rospy.wait_for_service('add_two_ints')
        s = rospy.ServiceProxy('add_two_ints', BadTwoInts)
        tests = [(1, 2), (0, 0), (-1, -2), (12312, 980123), (sys.maxsize, -sys.maxsize), (sys.maxsize, -1), (sys.maxsize, 0)]
        for x, y in tests:
            print("Requesting %s+%s" % (x, y))
            # test both simple and formal call syntax
            try:
                resp = s(x, y)
                if resp.sum == x+y:
                    self.fail("call 1 with bad type failed: the server appears to be incorrectly deserialing the packet as it returned: %s"%resp.sum)
                else:
                    self.fail("call 1 with bad type failed to throw exception: %s"%resp.sum)
            except rospy.ServiceException as e:
                print("success -- ros exception was thrown: %s" % e)
            try:
                resp = s.call(BadTwoIntsRequest(x, y))
                if resp.sum == x+y:
                    self.fail("call 2 with bad type failed: the server appears to be incorrectly deserialing the packet as it returned: %s"%resp.sum)
                else:
                    self.fail("call 2 with bad type failed to throw exception: %s"%resp.sum)
            except rospy.ServiceException as e:
                print("success -- ros exception was thrown: %s" % e)
        
if __name__ == '__main__':
    rostest.rosrun(PKG, NAME, TestAddTwoInts, sys.argv)