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#!/usr/bin/env python
# ClusterShell (local) test suite
# Written by S. Thiell
"""Unit test for ClusterShell Task (event-based mode)"""
import copy
import socket
import sys
import thread
import unittest
sys.path.insert(0, '../lib')
import ClusterShell
from ClusterShell.NodeSet import NodeSet
from ClusterShell.Task import *
from ClusterShell.Event import EventHandler
class TestHandler(EventHandler):
def __init__(self):
self.reset_asserts()
def do_asserts_read_notimeout(self):
assert self.did_start, "ev_start not called"
assert self.cnt_pickup > 0, "ev_pickup not called"
assert self.did_read, "ev_read not called"
assert not self.did_readerr, "ev_error called"
assert self.cnt_written == 0, "ev_written called"
assert self.cnt_hup > 0, "ev_hup not called"
assert self.did_close, "ev_close not called"
assert not self.did_timeout, "ev_timeout called"
def do_asserts_timeout(self):
assert self.did_start, "ev_start not called"
assert self.cnt_pickup > 0, "ev_pickup not called"
assert not self.did_read, "ev_read called"
assert not self.did_readerr, "ev_error called"
assert self.cnt_written == 0, "ev_written called"
assert self.cnt_hup == 0, "ev_hup called"
assert self.did_close, "ev_close not called"
assert self.did_timeout, "ev_timeout not called"
def do_asserts_noread_notimeout(self):
assert self.did_start, "ev_start not called"
assert self.cnt_pickup > 0, "ev_pickup not called"
assert not self.did_read, "ev_read called"
assert not self.did_readerr, "ev_error called"
assert self.cnt_written == 0, "ev_written called"
assert self.cnt_hup > 0, "ev_hup not called"
assert self.did_close, "ev_close not called"
assert not self.did_timeout, "ev_timeout called"
def do_asserts_read_write_notimeout(self):
assert self.did_start, "ev_start not called"
assert self.cnt_pickup > 0, "ev_pickup not called"
assert self.did_read, "ev_read not called"
assert not self.did_readerr, "ev_error called"
assert self.cnt_written > 0, "ev_written not called"
assert self.cnt_hup > 0, "ev_hup not called"
assert self.did_close, "ev_close not called"
assert not self.did_timeout, "ev_timeout called"
def reset_asserts(self):
self.did_start = False
self.cnt_pickup = 0
self.did_read = False
self.did_readerr = False
self.cnt_written = 0
self.bytes_written = 0
self.cnt_hup = 0
self.did_close = False
self.did_timeout = False
def ev_start(self, worker):
self.did_start = True
def ev_pickup(self, worker):
self.cnt_pickup += 1
def ev_read(self, worker):
self.did_read = True
assert worker.current_msg == "abcdefghijklmnopqrstuvwxyz"
assert worker.current_errmsg != "abcdefghijklmnopqrstuvwxyz"
def ev_error(self, worker):
self.did_readerr = True
assert worker.current_errmsg == "errerrerrerrerrerrerrerr"
assert worker.current_msg != "errerrerrerrerrerrerrerr"
def ev_written(self, worker, node, sname, size):
self.cnt_written += 1
self.bytes_written += size
def ev_hup(self, worker):
self.cnt_hup += 1
def ev_close(self, worker):
self.did_close = True
if worker.read():
assert worker.read().startswith("abcdefghijklmnopqrstuvwxyz")
def ev_timeout(self, worker):
self.did_timeout = True
class AbortOnReadHandler(EventHandler):
def ev_read(self, worker):
worker.abort()
class TaskEventTest(unittest.TestCase):
def testSimpleEventHandler(self):
"""test simple event handler"""
task = task_self()
eh = TestHandler()
# init worker
worker = task.shell("./test_command.py --test=cmp_out", handler=eh)
# run task
task.resume()
eh.do_asserts_read_notimeout()
eh.reset_asserts()
# re-test
# init worker
worker = task.shell("./test_command.py --test=cmp_out", handler=eh)
# run task
task.resume()
eh.do_asserts_read_notimeout()
eh.reset_asserts()
def testSimpleEventHandlerWithTaskTimeout(self):
"""test simple event handler with timeout"""
task = task_self()
eh = TestHandler()
# init worker
worker = task.shell("/bin/sleep 3", handler=eh)
try:
task.resume(2)
except TimeoutError:
pass
else:
self.fail("did not detect timeout")
eh.do_asserts_timeout()
def test_popen_specific_behaviour(self):
"""test current_node is None for WorkerPopen events"""
class WorkerPopenEH(TestHandler):
def __init__(self, testcase):
TestHandler.__init__(self)
self.testcase = testcase
def ev_start(self, worker):
TestHandler.ev_start(self, worker)
self.testcase.assertEqual(worker.current_node, None)
def ev_read(self, worker):
TestHandler.ev_read(self, worker)
self.testcase.assertEqual(worker.current_node, None)
def ev_error(self, worker):
TestHandler.ev_error(self, worker)
self.testcase.assertEqual(worker.current_node, None)
def ev_written(self, worker, node, sname, size):
TestHandler.ev_written(self, worker, node, sname, size)
self.testcase.assertEqual(worker.current_node, None)
def ev_pickup(self, worker):
TestHandler.ev_pickup(self, worker)
self.testcase.assertEqual(worker.current_node, None)
def ev_hup(self, worker):
TestHandler.ev_hup(self, worker)
self.testcase.assertEqual(worker.current_node, None)
def ev_close(self, worker):
TestHandler.ev_close(self, worker)
self.testcase.assertEqual(worker.current_node, None)
task = task_self()
eh = WorkerPopenEH(self)
worker = task.shell("cat", handler=eh)
content = "abcdefghijklmnopqrstuvwxyz\n"
worker.write(content)
worker.set_write_eof()
self.assertNotEqual(worker, None)
task.run()
eh.do_asserts_read_write_notimeout()
class TInFlyAdder(EventHandler):
"""Test handler that schedules new commands in-fly"""
def ev_read(self, worker):
assert worker.task.running()
# in-fly workers addition
other1 = worker.task.shell("/bin/sleep 1")
assert other1 != None
other2 = worker.task.shell("/bin/sleep 1")
assert other2 != None
def testEngineInFlyAdd(self):
"""test client add while running (in-fly add)"""
task = task_self()
eh = self.__class__.TInFlyAdder()
worker = task.shell("/bin/uname", handler=eh)
self.assertNotEqual(worker, None)
task.resume()
class TWriteOnStart(EventHandler):
def ev_start(self, worker):
assert worker.task.running()
worker.write("foo bar\n")
def ev_read(self, worker):
assert worker.current_msg == "foo bar"
worker.abort()
def testWriteOnStartEvent(self):
"""test write on ev_start"""
task = task_self()
task.shell("cat", handler=self.__class__.TWriteOnStart())
task.resume()
def testEngineMayReuseFD(self):
"""test write + worker.abort() on read to reuse FDs"""
task = task_self()
fanout = task.info("fanout")
try:
task.set_info("fanout", 1)
eh = AbortOnReadHandler()
for i in range(10):
worker = task.shell("echo ok; sleep 1", handler=eh)
self.assert_(worker is not None)
worker.write("OK\n")
task.resume()
finally:
task.set_info("fanout", fanout)
def test_ev_pickup(self):
"""test ev_pickup event"""
task = task_self()
eh = TestHandler()
task.shell("/bin/sleep 0.4", handler=eh)
task.shell("/bin/sleep 0.5", handler=eh)
task.shell("/bin/sleep 0.5", handler=eh)
task.resume()
eh.do_asserts_noread_notimeout()
self.assertEqual(eh.cnt_pickup, 3)
self.assertEqual(eh.cnt_hup, 3)
def test_ev_pickup_fanout(self):
"""test ev_pickup event (with fanout)"""
task = task_self()
fanout = task.info("fanout")
try:
task.set_info("fanout", 1)
eh = TestHandler()
task.shell("/bin/sleep 0.4", handler=eh, key="n1")
task.shell("/bin/sleep 0.5", handler=eh, key="n2")
task.shell("/bin/sleep 0.5", handler=eh, key="n3")
task.resume()
eh.do_asserts_noread_notimeout()
self.assertEqual(eh.cnt_pickup, 3)
self.assertEqual(eh.cnt_hup, 3)
finally:
task.set_info("fanout", fanout)
def test_ev_written(self):
"""test ev_written event"""
task = task_self()
eh = TestHandler()
worker = task.shell("cat", handler=eh)
content = "abcdefghijklmnopqrstuvwxyz\n"
worker.write(content)
worker.set_write_eof()
task.resume()
eh.do_asserts_read_write_notimeout()
self.assertEqual(eh.cnt_written, 1)
self.assertEqual(eh.bytes_written, len(content))
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