130 lines
5.2 KiB
Python
130 lines
5.2 KiB
Python
#!/usr/bin/env python3
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#
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# Copyright (c) 2019, The OpenThread Authors.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. Neither the name of the copyright holder nor the
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# names of its contributors may be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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import time
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import wpan
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from wpan import verify
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# -----------------------------------------------------------------------------------------------------------------------
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# Test description: Verify transmission of data polls and poll interval change.
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test_name = __file__[:-3] if __file__.endswith('.py') else __file__
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print('-' * 120)
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print('Starting \'{}\''.format(test_name))
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# -----------------------------------------------------------------------------------------------------------------------
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# Creating `wpan.Nodes` instances
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speedup = 4
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wpan.Node.set_time_speedup_factor(speedup)
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parent = wpan.Node()
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child = wpan.Node()
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# -----------------------------------------------------------------------------------------------------------------------
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# Init all nodes
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wpan.Node.init_all_nodes()
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# -----------------------------------------------------------------------------------------------------------------------
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# Build network topology
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#
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parent.form("poll-interval")
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child.join_node(parent, wpan.JOIN_TYPE_SLEEPY_END_DEVICE)
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# -----------------------------------------------------------------------------------------------------------------------
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# Test implementation
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# Verify the default poll interval is smaller than child_timeout
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child_timeout = int(child.get(wpan.WPAN_THREAD_CHILD_TIMEOUT), 0) * 1000
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default_poll_interval = int(child.get(wpan.WPAN_POLL_INTERVAL), 0)
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verify(0 < default_poll_interval <= child_timeout)
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WAIT_TIME = 0.36 # in seconds
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# Check number of data polls with different poll intervals
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for poll_interval in [100, 200, 500, 50]: # in milliseconds
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poll_count_before = int(child.get(wpan.WPAN_NCP_COUNTER_TX_PKT_DATA_POLL), 0)
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child.set(wpan.WPAN_POLL_INTERVAL, str(poll_interval))
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verify(int(child.get(wpan.WPAN_POLL_INTERVAL), 0) == poll_interval)
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time.sleep(WAIT_TIME)
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poll_count_after = int(child.get(wpan.WPAN_NCP_COUNTER_TX_PKT_DATA_POLL), 0)
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actual_polls = poll_count_after - poll_count_before
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expected_polls = WAIT_TIME * 1000 * speedup / poll_interval
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print("poll interval {} ms, polls -> actual {}, expected {}".format(poll_interval, actual_polls, expected_polls))
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verify(actual_polls >= int(expected_polls))
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# Verify behavior when poll interval is switched from long to short.
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#
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# - Poll interval set to 5 seconds
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# - Wait for 200 ms
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# - Change poll interval to 200 ms
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# - This should immediately trigger a poll tx since 100 ms is
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# already passed since last poll transmission.
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child.set(wpan.WPAN_POLL_INTERVAL, '5000')
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WIAT_TIME = 0.2 # in seconds
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time.sleep(WAIT_TIME / speedup)
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poll_count_before = int(child.get(wpan.WPAN_NCP_COUNTER_TX_PKT_DATA_POLL), 0)
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child.set(wpan.WPAN_POLL_INTERVAL, str(WAIT_TIME * 1000))
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time.sleep(0.01)
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poll_count_after = int(child.get(wpan.WPAN_NCP_COUNTER_TX_PKT_DATA_POLL), 0)
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verify(poll_count_after > poll_count_before)
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# Verify behavior when poll interval is set to zero.
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# Poll interval should use default interval again (based on child timeout).
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child.set(wpan.WPAN_POLL_INTERVAL, '0')
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verify(int(child.get(wpan.WPAN_POLL_INTERVAL), 0) == default_poll_interval)
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# Change "child timeout" and verify that default interval does change
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child.set(wpan.WPAN_THREAD_CHILD_TIMEOUT, str(child_timeout / 1000 * 2))
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new_default_interval = int(child.get(wpan.WPAN_POLL_INTERVAL), 0)
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verify(default_poll_interval < new_default_interval <= child_timeout * 2)
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child.set(wpan.WPAN_THREAD_CHILD_TIMEOUT, str(child_timeout / 1000))
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verify(int(child.get(wpan.WPAN_POLL_INTERVAL), 0) == default_poll_interval)
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# -----------------------------------------------------------------------------------------------------------------------
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# Test finished
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wpan.Node.finalize_all_nodes()
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print('\'{}\' passed.'.format(test_name))
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