#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @file
# @author (C) 2015 by Roman Khassraf <rkhassraf@gmail.com>
# @section LICENSE
# 
# Gr-gsm 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.
# 
# Gr-gsm 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 gr-gsm; 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, blocks
import grgsm_swig as grgsm
import os
import pmt
import sys
import tempfile

class qa_message_printer (gr_unittest.TestCase):
   
    def setUp (self):
        self.tb = gr.top_block()
        self.tmpfile = tempfile.NamedTemporaryFile()
        self.prevfd = os.dup(sys.stdout.fileno())
        os.dup2(self.tmpfile.fileno(), sys.stdout.fileno())
        self.prev = sys.stdout
        sys.stdout = os.fdopen(self.prevfd, "w")
        
    def tearDown (self):
        self.tb = None
        os.dup2(self.prevfd, self.prev.fileno())
        sys.stdout = self.prev
        self.tmpfile.close()
        
    def getOutput(self):
        self.tmpfile.seek(0)
        return self.tmpfile.read()
    
    def getOutputExpected(self, expected_lines):
        out = ""
        for l in expected_lines:
            out = out + l + "\n"
        return out.encode('utf-8')
        
    def test_001_no_prefix_no_header (self):
        """
            Four messages, without any prefix, no gsmtap header
        """
        msgs_input = [
            "02 04 01 00 00 00 c9 00 00 1d 3c e5 02 00 01 00 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b",
            "02 04 01 00 00 00 ca 00 00 1d 3c e9 02 00 02 00 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b",
            "02 04 01 00 00 00 cb 00 00 1d 3d 0e 01 00 00 00 59 06 1a 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff e5 04 00",
            "02 04 01 00 00 00 cb 00 00 1d 3d 12 02 00 00 00 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b"
        ]
        
        # there is a whitespace at the beginning of message_printer output
        msgs_expected = [
            " 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b",
            " 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b",
            " 59 06 1a 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff e5 04 00",
            " 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b"
        ]
        
        src = grgsm.message_source(msgs_input)
        printer = grgsm.message_printer(pmt.intern(""), False)
        self.tb.msg_connect(src, "msgs", printer, "msgs")
        self.tb.run()

        self.assertEqual(self.getOutput(), self.getOutputExpected(msgs_expected))


    def test_002_prefix_no_header (self):
        """
            Four messages, with prefix "test_002:", no gsmtap header
        """
        msgs_input = [
            "02 04 01 00 00 00 c9 00 00 1d 3c e5 02 00 01 00 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b",
            "02 04 01 00 00 00 ca 00 00 1d 3c e9 02 00 02 00 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b",
            "02 04 01 00 00 00 cb 00 00 1d 3d 0e 01 00 00 00 59 06 1a 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff e5 04 00",
            "02 04 01 00 00 00 cb 00 00 1d 3d 12 02 00 00 00 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b"
        ]
        
        msgs_expected = [
            "test_002: 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b",
            "test_002: 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b",
            "test_002: 59 06 1a 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff e5 04 00",
            "test_002: 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b"
        ]
        
        src = grgsm.message_source(msgs_input)
        printer = grgsm.message_printer(pmt.intern("test_002:"), False)
        self.tb.msg_connect(src, "msgs", printer, "msgs")
        self.tb.run()

        self.assertEqual(self.getOutput(), self.getOutputExpected(msgs_expected))


    def test_003_no_prefix_header (self):
        """
            Four messages, without any prefix, with gsmtap header
        """
        msgs_input = [
            "02 04 01 00 00 00 c9 00 00 1d 3c e5 02 00 01 00 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b",
            "02 04 01 00 00 00 ca 00 00 1d 3c e9 02 00 02 00 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b",
            "02 04 01 00 00 00 cb 00 00 1d 3d 0e 01 00 00 00 59 06 1a 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff e5 04 00",
            "02 04 01 00 00 00 cb 00 00 1d 3d 12 02 00 00 00 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b"
        ]
        
        # there is a whitespace at the beginning of message_printer output
        msgs_expected = [
            " 02 04 01 00 00 00 c9 00 00 1d 3c e5 02 00 01 00 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b",
            " 02 04 01 00 00 00 ca 00 00 1d 3c e9 02 00 02 00 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b",
            " 02 04 01 00 00 00 cb 00 00 1d 3d 0e 01 00 00 00 59 06 1a 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff e5 04 00",
            " 02 04 01 00 00 00 cb 00 00 1d 3d 12 02 00 00 00 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b"
        ]
        
        src = grgsm.message_source(msgs_input)
        printer = grgsm.message_printer(pmt.intern(""), False, False, True)
        self.tb.msg_connect(src, "msgs", printer, "msgs")
        self.tb.run()

        self.assertEqual(self.getOutput(), self.getOutputExpected(msgs_expected))
        

    def test_004_prefix_header (self):
        """
            Four messages, with prefix "test_004:", with gsmtap header
        """
        msgs_input = [
            "02 04 01 00 00 00 c9 00 00 1d 3c e5 02 00 01 00 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b",
            "02 04 01 00 00 00 ca 00 00 1d 3c e9 02 00 02 00 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b",
            "02 04 01 00 00 00 cb 00 00 1d 3d 0e 01 00 00 00 59 06 1a 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff e5 04 00",
            "02 04 01 00 00 00 cb 00 00 1d 3d 12 02 00 00 00 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b"
        ]
        
        # there is a whitespace at the beginning of message_printer output
        msgs_expected = [
            "test_004: 02 04 01 00 00 00 c9 00 00 1d 3c e5 02 00 01 00 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b",
            "test_004: 02 04 01 00 00 00 ca 00 00 1d 3c e9 02 00 02 00 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b",
            "test_004: 02 04 01 00 00 00 cb 00 00 1d 3d 0e 01 00 00 00 59 06 1a 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff e5 04 00",
            "test_004: 02 04 01 00 00 00 cb 00 00 1d 3d 12 02 00 00 00 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b"
        ]
        
        src = grgsm.message_source(msgs_input)
        printer = grgsm.message_printer(pmt.intern("test_004:"), False, False, True)
        self.tb.msg_connect(src, "msgs", printer, "msgs")
        self.tb.run()
        
        self.assertEqual(self.getOutput(), self.getOutputExpected(msgs_expected))
        
        
if __name__ == '__main__':
    gr_unittest.run(qa_message_printer)
