#!/usr/bin/env python

#

# Copyright 2007 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 2, 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

class test_skiphead (gr_unittest.TestCase):

    def setUp(self):

        self.fg = gr.flow_graph ()

        self.src_data = [int(x) for x in range(65536)]

    def tearDown(self):

        self.fg = None

    def test_skip_0(self):

        skip_cnt = 0

        expected_result = tuple(self.src_data[skip_cnt:])

        src1 = gr.vector_source_i (self.src_data)

        op = gr.skiphead (gr.sizeof_int, skip_cnt)

        dst1 = gr.vector_sink_i ()

        self.fg.connect (src1, op, dst1)

        self.fg.run ()

        dst_data = dst1.data ()

        self.assertEqual (expected_result, dst_data)

    def test_skip_1(self):

        skip_cnt = 1

        expected_result = tuple(self.src_data[skip_cnt:])

        src1 = gr.vector_source_i (self.src_data)

        op = gr.skiphead (gr.sizeof_int, skip_cnt)

        dst1 = gr.vector_sink_i ()

        self.fg.connect (src1, op, dst1)

        self.fg.run ()

        dst_data = dst1.data ()

        self.assertEqual (expected_result, dst_data)

    def test_skip_1023(self):

        skip_cnt = 1023

        expected_result = tuple(self.src_data[skip_cnt:])

        src1 = gr.vector_source_i (self.src_data)

        op = gr.skiphead (gr.sizeof_int, skip_cnt)

        dst1 = gr.vector_sink_i ()

        self.fg.connect (src1, op, dst1)

        self.fg.run ()

        dst_data = dst1.data ()

        self.assertEqual (expected_result, dst_data)

    def test_skip_6339(self):

        skip_cnt = 6339

        expected_result = tuple(self.src_data[skip_cnt:])

        src1 = gr.vector_source_i (self.src_data)

        op = gr.skiphead (gr.sizeof_int, skip_cnt)

        dst1 = gr.vector_sink_i ()

        self.fg.connect (src1, op, dst1)

        self.fg.run ()

        dst_data = dst1.data ()

        self.assertEqual (expected_result, dst_data)

    def test_skip_12678(self):

        skip_cnt = 12678

        expected_result = tuple(self.src_data[skip_cnt:])

        src1 = gr.vector_source_i (self.src_data)

        op = gr.skiphead (gr.sizeof_int, skip_cnt)

        dst1 = gr.vector_sink_i ()

        self.fg.connect (src1, op, dst1)

        self.fg.run ()

        dst_data = dst1.data ()

        self.assertEqual (expected_result, dst_data)

    def test_skip_all(self):

        skip_cnt = len(self.src_data)

        expected_result = tuple(self.src_data[skip_cnt:])

        src1 = gr.vector_source_i (self.src_data)

        op = gr.skiphead (gr.sizeof_int, skip_cnt)

        dst1 = gr.vector_sink_i ()

        self.fg.connect (src1, op, dst1)

        self.fg.run ()

        dst_data = dst1.data ()

        self.assertEqual (expected_result, dst_data)

if __name__ == '__main__':

    gr_unittest.main ()