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#!/usr/bin/env python
#
# Copyright 2004,2007,2010,2013 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_head(gr_unittest.TestCase):
def setUp(self):
self.tb = gr.top_block()
def tearDown(self):
self.tb = None
def test_head(self):
src_data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
expected_result = [1, 2, 3, 4]
src1 = blocks.vector_source_i(src_data)
op = blocks.head(gr.sizeof_int, 4)
dst1 = blocks.vector_sink_i()
self.tb.connect(src1, op)
self.tb.connect(op, dst1)
self.tb.run()
dst_data = dst1.data()
self.assertEqual(expected_result, dst_data)
if __name__ == '__main__':
gr_unittest.run(test_head, "test_head.xml")
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