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# Copyright 2008 Free Software Foundation, Inc.
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# This file is part of GNU Radio
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# GNU Radio is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3, or (at your option)
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# GNU Radio is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with GNU Radio; see the file COPYING. If not, write to
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# the Free Software Foundation, Inc., 51 Franklin Street,
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# Boston, MA 02110-1301, USA.
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from gnuradio import gr, gr_unittest
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class test_scrambler(gr_unittest.TestCase):
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self.tb = gr.top_block()
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def test_scrambler_descrambler(self):
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src = gr.vector_source_b(src_data, False)
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scrambler = gr.scrambler_bb(0x8a, 0x7F, 7) # CCSDS 7-bit scrambler
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descrambler = gr.descrambler_bb(0x8a, 0x7F, 7)
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dst = gr.vector_sink_b()
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self.tb.connect(src, scrambler, descrambler, dst)
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self.assertEqual(tuple(src_data[:-8]), dst.data()[8:]) # skip garbage during synchronization
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if __name__ == '__main__':