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[posix] implement virtual time and update tests to utilize virtual time (#2508)

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This commit adds the following features:

- Example posix drivers to support virtual time simulation, allowing tests
  to run faster than real time.

- A python-based simulation driver that coordinates the virtual time
  simulations.  Each alarm event and message transmission across all nodes
  are scheduled in a single discrete time event queue.  As a result, only
  a single node is making forward progress at a time.

- Updated tests to utilize new virtual-time simulator, allowing them to run
  faster than real time.

- To enable virtual time feature, define VIRTUAL_TIME=1 env var and set
  CPPFLAGS=-DOPENTHREAD_POSIX_VIRTUAL_TIME=1.
This commit is contained in:
Jonathan Hui
2018-01-29 19:30:46 +00:00
committed by GitHub
parent 0403a1baf5
commit d426d7cfbd
107 changed files with 2600 additions and 882 deletions
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tests/scripts/thread-cert/Cert_5_2_05_AddressQuery.py
+13 -16
View File
@@ -43,9 +43,11 @@ ROUTER_SELECTION_JITTER = 1
class Cert_5_2_5_AddressQuery(unittest.TestCase):
def setUp(self):
self.simulator = config.create_default_simulator()
self.nodes = {}
for i in range(1, 19):
self.nodes[i] = node.Node(i, (i == ED1))
self.nodes[i] = node.Node(i, (i == ED1), simulator=self.simulator)
self.nodes[LEADER].set_panid()
self.nodes[LEADER].set_mode('rsdn')
@@ -72,28 +74,23 @@ class Cert_5_2_5_AddressQuery(unittest.TestCase):
self.nodes[DUT_REED].enable_whitelist()
self.nodes[DUT_REED].set_router_selection_jitter(1)
self.sniffer = config.create_default_thread_sniffer()
self.sniffer.start()
def tearDown(self):
self.sniffer.stop()
del self.sniffer
for node in list(self.nodes.values()):
node.stop()
del self.nodes
del self.simulator
def test(self):
# 1. LEADER: DHCPv6 Server for prefix 2001::/64.
self.nodes[LEADER].start()
self.nodes[LEADER].set_state('leader')
self.simulator.go(5)
self.assertEqual(self.nodes[LEADER].get_state(), 'leader')
self.nodes[LEADER].add_prefix('2001::/64', 'pdros')
self.nodes[LEADER].register_netdata()
# 2. BR: SLAAC Server for prefix 2002::/64.
self.nodes[BR].start()
time.sleep(5)
self.simulator.go(5)
self.assertEqual(self.nodes[BR].get_state(), 'router')
self.nodes[BR].add_prefix('2002::/64', 'paros')
self.nodes[BR].register_netdata()
@@ -103,19 +100,19 @@ class Cert_5_2_5_AddressQuery(unittest.TestCase):
if i == BR:
continue
self.nodes[i].start()
time.sleep(5)
self.simulator.go(5)
self.assertEqual(self.nodes[i].get_state(), 'router')
self.nodes[ED1].start()
time.sleep(5)
self.simulator.go(5)
self.assertEqual(self.nodes[ED1].get_state(), 'child')
# 4. Bring up DUT_REED.
self.nodes[DUT_REED].start()
time.sleep(5)
time.sleep(ROUTER_SELECTION_JITTER)
self.simulator.go(5)
self.simulator.go(ROUTER_SELECTION_JITTER)
reed_messages = self.sniffer.get_messages_sent_by(DUT_REED)
reed_messages = self.simulator.get_messages_sent_by(DUT_REED)
# Verify DUT_REED doesn't try to become router.
msg = reed_messages.does_not_contain_coap_message()
@@ -129,7 +126,7 @@ class Cert_5_2_5_AddressQuery(unittest.TestCase):
mleid = self.nodes[DUT_REED].get_ip6_address(config.ADDRESS_TYPE.ML_EID)
self.assertTrue(self.nodes[ED1].ping(mleid))
reed_messages = self.sniffer.get_messages_sent_by(DUT_REED)
reed_messages = self.simulator.get_messages_sent_by(DUT_REED)
msg = reed_messages.next_coap_message('0.02')
command.check_address_notification(msg, self.nodes[DUT_REED], self.nodes[LEADER])
@@ -145,7 +142,7 @@ class Cert_5_2_5_AddressQuery(unittest.TestCase):
raise "Error: Address is unexpected."
self.assertTrue(self.nodes[ED1].ping(global_address))
reed_messages = self.sniffer.get_messages_sent_by(DUT_REED)
reed_messages = self.simulator.get_messages_sent_by(DUT_REED)
msg = reed_messages.next_coap_message('0.02')
command.check_address_notification(msg, self.nodes[DUT_REED], self.nodes[LEADER])