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#!/usr/bin/env python
#
# Copyright 2018 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
#
import os
import tempfile
import array
from gnuradio import gr, gr_unittest, blocks
class test_file_sink(gr_unittest.TestCase):
def setUp(self):
os.environ['GR_CONF_CONTROLPORT_ON'] = 'False'
self.tb = gr.top_block()
def tearDown(self):
self.tb = None
def test_file_sink(self):
data = range(1000)
expected_result = data
with tempfile.NamedTemporaryFile() as temp:
src = blocks.vector_source_f(data)
snk = blocks.file_sink(gr.sizeof_float, temp.name)
snk.set_unbuffered(True)
self.tb.connect(src, snk)
self.tb.run()
# Check file length (float: 4 * nsamples)
file_size = os.stat(temp.name).st_size
self.assertEqual(file_size, 4 * len(data))
# Check file contents
datafile = open(temp.name, 'rb')
result_data = array.array('f')
result_data.fromfile(datafile, len(data))
self.assertFloatTuplesAlmostEqual(expected_result, result_data)
if __name__ == '__main__':
gr_unittest.run(test_file_sink)
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