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#!/usr/bin/env python
#
# Copyright 2016 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_block_behavior(gr_unittest.TestCase):
def setUp(self):
self.tb = gr.top_block()
def tearDown(self):
self.tb = None
def test_000(self):
'''
Tests the max noutput sizes set by the scheduler. When creating
the block, there is no block_detail and so the max buffer size
is 0. When the top_block is run, it builds the detail and
buffers and sets the max value. test_0001 tests when the
max_noutput_items is set by hand.
'''
src = blocks.null_source(gr.sizeof_float)
op = blocks.head(gr.sizeof_float, 100)
snk = blocks.null_sink(gr.sizeof_float)
maxn_pre = op.max_noutput_items()
self.tb.connect(src, op, snk)
self.tb.run()
maxn_post = op.max_noutput_items()
self.assertEqual(maxn_pre, 0)
self.assertEqual(maxn_post, 16384)
def test_001(self):
'''
Tests the max noutput size when being explicitly set.
'''
src = blocks.null_source(gr.sizeof_float)
op = blocks.head(gr.sizeof_float, 100)
snk = blocks.null_sink(gr.sizeof_float)
op.set_max_noutput_items(1024)
maxn_pre = op.max_noutput_items()
self.tb.connect(src, op, snk)
self.tb.run()
maxn_post = op.max_noutput_items()
self.assertEqual(maxn_pre, 1024)
self.assertEqual(maxn_post, 1024)
if __name__ == '__main__':
gr_unittest.run(test_block_behavior)
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