qa_message.py

这是用python语言写的一个数字广播的信号处理工具包。利用它

#!/usr/bin/env python
#
# Copyright 2004 Free Software Foundation, Inc.
# 
# This file is part of GNU Radio
# 
# GNU Radio is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
# 
# GNU Radio is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with GNU Radio; see the file COPYING.  If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street,
# Boston, MA 02110-1301, USA.
# 

from gnuradio import gr, gr_unittest
import qa_basic_flow_graph


def all_counts ():
    return (gr.block_ncurrently_allocated (),
            gr.block_detail_ncurrently_allocated (),
            gr.buffer_ncurrently_allocated (),
            gr.buffer_reader_ncurrently_allocated (),
            gr.message_ncurrently_allocated ())


class test_message (gr_unittest.TestCase):

    def setUp (self):
        self.fg = gr.flow_graph()
        self.msgq = gr.msg_queue ()

    def tearDown (self):
        self.fg = None
        self.msgq = None
        
    def leak_check (self, fct):
        begin = all_counts ()
        fct ()
        # tear down early so we can check for leaks
        self.tearDown ()
        end = all_counts ()
        self.assertEqual (begin, end)

    def test_100 (self):
        msg = gr.message (0, 1.5, 2.3)
        self.assertEquals (0, msg.type())
        self.assertAlmostEqual (1.5, msg.arg1())
        self.assertAlmostEqual (2.3, msg.arg2())
        self.assertEquals (0, msg.length())

    def test_101 (self):
        s = 'This is a test'
        msg = gr.message_from_string(s)
        self.assertEquals(s, msg.to_string())

    def test_200 (self):
        self.leak_check (self.body_200)
        
    def body_200 (self):
        self.msgq.insert_tail (gr.message (0))
        self.assertEquals (1, self.msgq.count())
        self.msgq.insert_tail (gr.message (1))
        self.assertEquals (2, self.msgq.count())
        msg0 = self.msgq.delete_head ()
        self.assertEquals (0, msg0.type())
        msg1 = self.msgq.delete_head ()
        self.assertEquals (1, msg1.type())
        self.assertEquals (0, self.msgq.count())

    def test_201 (self):
        self.leak_check (self.body_201)
        
    def body_201 (self):
        self.msgq.insert_tail (gr.message (0))
        self.assertEquals (1, self.msgq.count())
        self.msgq.insert_tail (gr.message (1))
        self.assertEquals (2, self.msgq.count())

    def test_202 (self):
        self.leak_check (self.body_202)
        
    def body_202 (self):
        # global msg
        msg = gr.message (666)

    def test_300(self):
        input_data = (0,1,2,3,4,5,6,7,8,9)
        src = gr.vector_source_b(input_data)
        dst = gr.vector_sink_b()
        self.fg.connect(src, dst)
        self.fg.run()
        self.assertEquals(input_data, dst.data())

    def test_301(self):
        src = gr.message_source(gr.sizeof_char)
        dst = gr.vector_sink_b()
        self.fg.connect(src, dst)
        src.msgq().insert_tail(gr.message_from_string('01234'))
        src.msgq().insert_tail(gr.message_from_string('5'))
        src.msgq().insert_tail(gr.message_from_string(''))
        src.msgq().insert_tail(gr.message_from_string('6789'))
        src.msgq().insert_tail(gr.message(1))                  # send EOF
        self.fg.run()
        self.assertEquals(tuple(map(ord, '0123456789')), dst.data())
        

if __name__ == '__main__':
    gr_unittest.main ()