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#!/usr/bin/env python
#
# Copyright 2012 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 analog_swig as analog
def clip(x, lo, hi):
if(x < lo):
return lo
elif(x > hi):
return hi
else:
return x
class test_rail(gr_unittest.TestCase):
def setUp(self):
self.tb = gr.top_block()
def tearDown(self):
self.tb = None
def test_rail_001(self):
# Test set/gets
hi1 = 1
hi2 = 2
lo1 = -1
lo2 = -2
op = analog.rail_ff(lo1, hi1)
op.set_hi(hi2)
h = op.hi()
self.assertEqual(hi2, h)
op.set_lo(lo2)
l = op.lo()
self.assertEqual(lo2, l)
def test_rail_002(self):
lo = -0.75
hi = 0.90
src_data = [-2, -1, -0.5, -0.25, 0, 0.25, 0.5, 1, 2]
expected_result = map(lambda x: clip(x, lo, hi), src_data)
src = gr.vector_source_f(src_data)
op = analog.rail_ff(lo, hi)
dst = gr.vector_sink_f()
self.tb.connect(src, op)
self.tb.connect(op, dst)
self.tb.run()
result_data = dst.data()
self.assertFloatTuplesAlmostEqual(expected_result, result_data, 4)
if __name__ == '__main__':
gr_unittest.run(test_rail, "test_rail.xml")
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