3 # Copyright 2004,2007 Free Software Foundation, Inc.
5 # This file is part of GNU Radio
7 # GNU Radio is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 3, or (at your option)
12 # GNU Radio is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with GNU Radio; see the file COPYING. If not, write to
19 # the Free Software Foundation, Inc., 51 Franklin Street,
20 # Boston, MA 02110-1301, USA.
23 from gnuradio import gr, gr_unittest
26 class test_head (gr_unittest.TestCase):
29 self.tb = gr.top_block ()
34 def test_constellation_decoder_cb (self):
35 symbol_positions = [1 + 0j, 0 + 1j , -1 + 0j, 0 - 1j]
36 symbol_values_out = [0, 1, 2, 3]
37 expected_result = ( 0, 3, 2, 1, 0, 0, 3)
38 src_data = (0.5 + 0j, 0.1 - 1.2j, -0.8 - 0.1j, -0.45 + 0.8j, 0.8 - 0j, 0.5 + 0j, 0.1 - 1.2j)
39 src = gr.vector_source_c (src_data)
40 op = gr.constellation_decoder_cb (symbol_positions, symbol_values_out)
41 dst = gr.vector_sink_b ()
42 self.tb.connect (src, op)
43 self.tb.connect (op, dst)
44 self.tb.run () # run the graph and wait for it to finish
45 actual_result = dst.data () # fetch the contents of the sink
46 #print "actual result", actual_result
47 #print "expected result", expected_result
48 self.assertFloatTuplesAlmostEqual (expected_result, actual_result)
51 if __name__ == '__main__':