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#!/usr/bin/env python
#
# Copyright 2013 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
#
from gnuradio import gr, gr_unittest, 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 = [x / 20.0 for x in data]
data1 = [x / 10.0 for x in data]
expected_result0 = 10 * [0.05, ]
expected_result1 = 10 * [0.1, ]
src0 = blocks.vector_source_f(data0, False)
src1 = blocks.vector_source_f(data1, False)
inter = blocks.streams_to_vector(gr.sizeof_float, 2)
op = blocks.stretch_ff(0.1, 2)
deinter = blocks.vector_to_streams(gr.sizeof_float, 2)
dst0 = blocks.vector_sink_f()
dst1 = blocks.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)
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