##// END OF EJS Templates
Merge branch 'unicode-issues'
Merge branch 'unicode-issues'

File last commit:

r2626:4bd8010e
r3459:a6a9d580 merge
Show More
tasktest.py
247 lines | 9.1 KiB | text/x-python | PythonLexer
#!/usr/bin/env python
# encoding: utf-8
__docformat__ = "restructuredtext en"
#-------------------------------------------------------------------------------
# Copyright (C) 2008 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-------------------------------------------------------------------------------
#-------------------------------------------------------------------------------
# Imports
#-------------------------------------------------------------------------------
import time
from IPython.kernel import task, engineservice as es
from IPython.kernel.util import printer
from IPython.kernel import error
#-------------------------------------------------------------------------------
# Tests
#-------------------------------------------------------------------------------
def _raise_it(f):
try:
f.raiseException()
except CompositeError, e:
e.raise_exception()
class TaskTestBase(object):
def addEngine(self, n=1):
for i in range(n):
e = es.EngineService()
e.startService()
regDict = self.controller.register_engine(es.QueuedEngine(e), None)
e.id = regDict['id']
self.engines.append(e)
class ITaskControllerTestCase(TaskTestBase):
def test_task_ids(self):
self.addEngine(1)
d = self.tc.run(task.StringTask('a=5'))
d.addCallback(lambda r: self.assertEquals(r, 0))
d.addCallback(lambda r: self.tc.run(task.StringTask('a=5')))
d.addCallback(lambda r: self.assertEquals(r, 1))
d.addCallback(lambda r: self.tc.run(task.StringTask('a=5')))
d.addCallback(lambda r: self.assertEquals(r, 2))
d.addCallback(lambda r: self.tc.run(task.StringTask('a=5')))
d.addCallback(lambda r: self.assertEquals(r, 3))
return d
def test_abort(self):
"""Cannot do a proper abort test, because blocking execution prevents
abort from being called before task completes"""
self.addEngine(1)
t = task.StringTask('a=5')
d = self.tc.abort(0)
d.addErrback(lambda f: self.assertRaises(IndexError, f.raiseException))
d.addCallback(lambda _:self.tc.run(t))
d.addCallback(self.tc.abort)
d.addErrback(lambda f: self.assertRaises(IndexError, f.raiseException))
return d
def test_abort_type(self):
self.addEngine(1)
d = self.tc.abort('asdfadsf')
d.addErrback(lambda f: self.assertRaises(TypeError, f.raiseException))
return d
def test_clear_before_and_after(self):
self.addEngine(1)
t = task.StringTask('a=1', clear_before=True, pull='b', clear_after=True)
d = self.multiengine.execute('b=1', targets=0)
d.addCallback(lambda _: self.tc.run(t))
d.addCallback(lambda tid: self.tc.get_task_result(tid,block=True))
d.addCallback(lambda tr: tr.failure)
d.addErrback(lambda f: self.assertRaises(NameError, f.raiseException))
d.addCallback(lambda _:self.multiengine.pull('a', targets=0))
d.addErrback(lambda f: self.assertRaises(NameError, _raise_it, f))
return d
def test_simple_retries(self):
self.addEngine(1)
t = task.StringTask("i += 1\nassert i == 16", pull='i',retries=10)
t2 = task.StringTask("i += 1\nassert i == 16", pull='i',retries=10)
d = self.multiengine.execute('i=0', targets=0)
d.addCallback(lambda r: self.tc.run(t))
d.addCallback(self.tc.get_task_result, block=True)
d.addCallback(lambda tr: tr.ns.i)
d.addErrback(lambda f: self.assertRaises(AssertionError, f.raiseException))
d.addCallback(lambda r: self.tc.run(t2))
d.addCallback(self.tc.get_task_result, block=True)
d.addCallback(lambda tr: tr.ns.i)
d.addCallback(lambda r: self.assertEquals(r, 16))
return d
def test_recovery_tasks(self):
self.addEngine(1)
t = task.StringTask("i=16", pull='i')
t2 = task.StringTask("raise Exception", recovery_task=t, retries = 2)
d = self.tc.run(t2)
d.addCallback(self.tc.get_task_result, block=True)
d.addCallback(lambda tr: tr.ns.i)
d.addCallback(lambda r: self.assertEquals(r, 16))
return d
def test_setup_ns(self):
self.addEngine(1)
d = self.multiengine.execute('a=0', targets=0)
ns = dict(a=1, b=0)
t = task.StringTask("", push=ns, pull=['a','b'])
d.addCallback(lambda r: self.tc.run(t))
d.addCallback(self.tc.get_task_result, block=True)
d.addCallback(lambda tr: {'a':tr.ns.a, 'b':tr['b']})
d.addCallback(lambda r: self.assertEquals(r, ns))
return d
def test_string_task_results(self):
self.addEngine(1)
t1 = task.StringTask('a=5', pull='a')
d = self.tc.run(t1)
d.addCallback(self.tc.get_task_result, block=True)
d.addCallback(lambda tr: (tr.ns.a,tr['a'],tr.failure, tr.raise_exception()))
d.addCallback(lambda r: self.assertEquals(r, (5,5,None,None)))
t2 = task.StringTask('7=5')
d.addCallback(lambda r: self.tc.run(t2))
d.addCallback(self.tc.get_task_result, block=True)
d.addCallback(lambda tr: tr.ns)
d.addErrback(lambda f: self.assertRaises(SyntaxError, f.raiseException))
t3 = task.StringTask('', pull='b')
d.addCallback(lambda r: self.tc.run(t3))
d.addCallback(self.tc.get_task_result, block=True)
d.addCallback(lambda tr: tr.ns)
d.addErrback(lambda f: self.assertRaises(NameError, f.raiseException))
return d
def test_map_task(self):
self.addEngine(1)
t1 = task.MapTask(lambda x: 2*x,(10,))
d = self.tc.run(t1)
d.addCallback(self.tc.get_task_result, block=True)
d.addCallback(lambda r: self.assertEquals(r,20))
t2 = task.MapTask(lambda : 20)
d.addCallback(lambda _: self.tc.run(t2))
d.addCallback(self.tc.get_task_result, block=True)
d.addCallback(lambda r: self.assertEquals(r,20))
t3 = task.MapTask(lambda x: x,(),{'x':20})
d.addCallback(lambda _: self.tc.run(t3))
d.addCallback(self.tc.get_task_result, block=True)
d.addCallback(lambda r: self.assertEquals(r,20))
return d
def test_map_task_failure(self):
self.addEngine(1)
t1 = task.MapTask(lambda x: 1/0,(10,))
d = self.tc.run(t1)
d.addCallback(self.tc.get_task_result, block=True)
d.addErrback(lambda f: self.assertRaises(ZeroDivisionError, f.raiseException))
return d
def test_map_task_args(self):
self.assertRaises(TypeError, task.MapTask, 'asdfasdf')
self.assertRaises(TypeError, task.MapTask, lambda x: x, 10)
self.assertRaises(TypeError, task.MapTask, lambda x: x, (10,),30)
def test_clear(self):
self.addEngine(1)
t1 = task.MapTask(lambda x: 2*x,(10,))
d = self.tc.run(t1)
d.addCallback(lambda _: self.tc.get_task_result(0, block=True))
d.addCallback(lambda r: self.assertEquals(r,20))
d.addCallback(lambda _: self.tc.clear())
d.addCallback(lambda _: self.tc.get_task_result(0, block=True))
d.addErrback(lambda f: self.assertRaises(IndexError, f.raiseException))
return d
def get_traceback_frames(self, result):
"""Execute a failing string as a task and return stack frame strings.
This lets us check that the returned exceptions contain as many stack
frames as the user expects from his code.
Parameters
----------
d : deferred
src : string
Code to be executed, should fail."""
# This gets Twisted's short-format traceback and picks the info for
# frames that actually belong to user code.
return result.failure.getBriefTraceback().split('\n<string>:')[1:]
def check_traceback(self, cmd, nframes, exception=IOError):
"""Ensure that we have a traceback object in task failures."""
self.addEngine(1)
t1 = task.StringTask(cmd)
d = self.tc.run(t1)
d.addCallback(self.tc.get_task_result, block=True)
# Sanity check, that the right exception is raised
d.addCallback(lambda r: self.assertRaises(exception, r.raise_exception))
# Rerun the same task, this time we check for the traceback to have the
# right number of frames
d.addCallback(lambda r: self.tc.run(t1))
d.addCallback(self.tc.get_task_result, block=True)
d.addCallback(self.get_traceback_frames)
d.addCallback(lambda frames: self.assertEquals(len(frames), nframes))
return d
# Check traceback structure with 2 and 4 frame-deep stacks
def test_traceback(self):
cmd = """
def fail():
raise IOError('failure test')
result = fail()
"""
return self.check_traceback(cmd, 2)
def test_traceback2(self):
cmd = """
def boom():
raise IOError('failure test')
def crash():
boom()
def fail():
crash()
result = fail()
"""
return self.check_traceback(cmd, 4)