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#!/usr/bin/env python
#
# Copyright 2008,2010,2012,2013,2018 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 this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
from gnuradio import gr, gr_unittest, blocks
import sys
import random
class test_keep_m_in_n(gr_unittest.TestCase):
def setUp(self):
pass
def tearDown(self):
pass
def test_001(self):
self.maxDiff = None
tb = gr.top_block()
src = blocks.vector_source_c(list(range(0, 100)))
# itemsize, M, N, offset
km2 = blocks.keep_m_in_n(8, 1, 2, 0)
km3 = blocks.keep_m_in_n(8, 1, 3, 1)
km7 = blocks.keep_m_in_n(8, 1, 7, 2)
snk2 = blocks.vector_sink_c()
snk3 = blocks.vector_sink_c()
snk7 = blocks.vector_sink_c()
tb.connect(src, km2, snk2)
tb.connect(src, km3, snk3)
tb.connect(src, km7, snk7)
tb.run()
self.assertEqual(list(range(0, 100, 2)), list(snk2.data()))
self.assertEqual(list(range(1, 100, 3)), list(snk3.data()))
self.assertEqual(list(range(2, 100, 7)), list(snk7.data()))
def test_002(self):
self.maxDiff = None
tb = gr.top_block()
src = blocks.vector_source_f(list(range(0, 100)))
km = []
snk = []
for i in range(5):
km.append(blocks.keep_m_in_n(4, 3, 5, i))
snk.append(blocks.vector_sink_f())
tb.connect(src, km[i], snk[i])
tb.run()
for i in range(5):
self.assertEqual(
sorted(
list(range(i, 100, 5)) +
list(range((i+1) % 5, 100, 5)) +
list(range((i+2) % 5, 100, 5))
),
list(snk[i].data())
)
def test_003(self):
with self.assertRaises(RuntimeError) as cm:
blocks.keep_m_in_n(8, 0, 5, 0)
self.assertEqual(str(cm.exception), 'keep_m_in_n: m=0 but must be > 0')
with self.assertRaises(RuntimeError) as cm:
blocks.keep_m_in_n(8, 5, 0, 0)
self.assertEqual(str(cm.exception), 'keep_m_in_n: n=0 but must be > 0')
with self.assertRaises(RuntimeError) as cm:
blocks.keep_m_in_n(8, 6, 5, 0)
self.assertEqual(str(cm.exception), 'keep_m_in_n: m (6) <= n 5')
with self.assertRaises(RuntimeError) as cm:
blocks.keep_m_in_n(8, 2, 5, -1)
self.assertEqual(str(cm.exception), 'keep_m_in_n: offset (-1) must be >= 0')
with self.assertRaises(RuntimeError) as cm:
blocks.keep_m_in_n(8, 2, 5, 5)
self.assertEqual(str(cm.exception), 'keep_m_in_n: offset (5) < n (5)')
if __name__ == '__main__':
gr_unittest.run(test_keep_m_in_n, "test_keep_m_in_n.xml")
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