travis_test_buzzer.py

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#!/usr/bin/env python
#encoding: utf8
import rospy, unittest, rostest, actionlib
import rosnode
import time
from std_msgs.msg import UInt16
from raspicat.msg import MusicAction, MusicResult, MusicFeedback, MusicGoal #1行追加

class BuzzerTest(unittest.TestCase):
    def setUp(self):                                #setUpメソッドを追加する
        self.client = actionlib.SimpleActionClient("music", MusicAction)
        self.device_values = []

    def test_node_exist(self):
        nodes = rosnode.get_node_names()
        self.assertIn('/buzzer',nodes, "node does not exist")

    def test_put_value(self):
        pub = rospy.Publisher('/buzzer', UInt16)
        for i in range(10):
            pub.publish(1234)
            time.sleep(0.1)

        with open("/dev/rtbuzzer0","r") as f:
            data = f.readline()
            self.assertEqual(data,"1234\n","value does not written to rtbuzzer0")

    def test_music(self):
        ### skip this test because a problem of this test code ###
        return
        goal = MusicGoal()
        goal.freqs = [100, 200, 300, 0]
        goal.durations = [2,2,2,2]

        self.client.wait_for_server()
        self.client.send_goal(goal,feedback_cb=self.feedback_cb)
        self.client.wait_for_result()

        self.assertTrue(self.client.get_result(),"invalid result")
        self.assertEqual(goal.freqs,self.device_values,"invalid feedback:"
                + ",".join([str(e) for e in self.device_values]))

        ###preemption###
        self.device_values = []
        self.client.send_goal(goal,feedback_cb=self.feedback_cb)
        self.client.wait_for_result(rospy.Duration.from_sec(0.5))

        self.assertFalse(self.client.get_result(),"stop is requested but return true")
        self.assertFalse(goal.freqs == self.device_values,"not stopped")

    def feedback_cb(self,feedback):
        with open("/dev/rtbuzzer0","r") as f:
            data = f.readline()
            self.device_values.append(int(data.rstrip()))

if __name__ == '__main__':
    time.sleep(3)
    rospy.init_node('travis_test_buzzer')
    rostest.rosrun('raspicat','travis_test_buzzer',BuzzerTest)