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#!/usr/bin/env python
#
# Copyright 2013 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 blocks_swig as blocks
class test_stretch(gr_unittest.TestCase):
def setUp(self):
self.tb = gr.top_block()
def tearDown(self):
self.tb = None
def test_stretch_01(self):
tb = self.tb
data = 10*[1,]
data0 = map(lambda x: x/20.0, data)
data1 = map(lambda x: x/10.0, data)
expected_result0 = 10*[0.05,]
expected_result1 = 10*[0.1,]
src0 = gr.vector_source_f(data0, False)
src1 = gr.vector_source_f(data1, False)
inter = gr.streams_to_vector(gr.sizeof_float, 2)
op = blocks.stretch_ff(0.1, 2)
deinter = gr.vector_to_streams(gr.sizeof_float, 2)
dst0 = gr.vector_sink_f()
dst1 = gr.vector_sink_f()
tb.connect(src0, (inter,0))
tb.connect(src1, (inter,1))
tb.connect(inter, op)
tb.connect(op, deinter)
tb.connect((deinter,0), dst0)
tb.connect((deinter,1), dst1)
tb.run()
dst0_data = dst0.data()
dst1_data = dst1.data()
self.assertFloatTuplesAlmostEqual(expected_result0, dst0_data, 4)
self.assertFloatTuplesAlmostEqual(expected_result1, dst1_data, 4)
if __name__ == '__main__':
gr_unittest.run(test_stretch, "test_stretch.xml")
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