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"""Tests for asyncresult.py
Authors:
* Min RK
"""
#-------------------------------------------------------------------------------
# Copyright (C) 2011 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.utils.io import capture_output
from IPython.parallel.error import TimeoutError
from IPython.parallel import error, Client
from IPython.parallel.tests import add_engines
from .clienttest import ClusterTestCase
def setup():
add_engines(2, total=True)
def wait(n):
import time
time.sleep(n)
return n
class AsyncResultTest(ClusterTestCase):
def test_single_result_view(self):
"""various one-target views get the right value for single_result"""
eid = self.client.ids[-1]
ar = self.client[eid].apply_async(lambda : 42)
self.assertEquals(ar.get(), 42)
ar = self.client[[eid]].apply_async(lambda : 42)
self.assertEquals(ar.get(), [42])
ar = self.client[-1:].apply_async(lambda : 42)
self.assertEquals(ar.get(), [42])
def test_get_after_done(self):
ar = self.client[-1].apply_async(lambda : 42)
ar.wait()
self.assertTrue(ar.ready())
self.assertEquals(ar.get(), 42)
self.assertEquals(ar.get(), 42)
def test_get_before_done(self):
ar = self.client[-1].apply_async(wait, 0.1)
self.assertRaises(TimeoutError, ar.get, 0)
ar.wait(0)
self.assertFalse(ar.ready())
self.assertEquals(ar.get(), 0.1)
def test_get_after_error(self):
ar = self.client[-1].apply_async(lambda : 1/0)
ar.wait(10)
self.assertRaisesRemote(ZeroDivisionError, ar.get)
self.assertRaisesRemote(ZeroDivisionError, ar.get)
self.assertRaisesRemote(ZeroDivisionError, ar.get_dict)
def test_get_dict(self):
n = len(self.client)
ar = self.client[:].apply_async(lambda : 5)
self.assertEquals(ar.get(), [5]*n)
d = ar.get_dict()
self.assertEquals(sorted(d.keys()), sorted(self.client.ids))
for eid,r in d.iteritems():
self.assertEquals(r, 5)
def test_list_amr(self):
ar = self.client.load_balanced_view().map_async(wait, [0.1]*5)
rlist = list(ar)
def test_getattr(self):
ar = self.client[:].apply_async(wait, 0.5)
self.assertRaises(AttributeError, lambda : ar._foo)
self.assertRaises(AttributeError, lambda : ar.__length_hint__())
self.assertRaises(AttributeError, lambda : ar.foo)
self.assertRaises(AttributeError, lambda : ar.engine_id)
self.assertFalse(hasattr(ar, '__length_hint__'))
self.assertFalse(hasattr(ar, 'foo'))
self.assertFalse(hasattr(ar, 'engine_id'))
ar.get(5)
self.assertRaises(AttributeError, lambda : ar._foo)
self.assertRaises(AttributeError, lambda : ar.__length_hint__())
self.assertRaises(AttributeError, lambda : ar.foo)
self.assertTrue(isinstance(ar.engine_id, list))
self.assertEquals(ar.engine_id, ar['engine_id'])
self.assertFalse(hasattr(ar, '__length_hint__'))
self.assertFalse(hasattr(ar, 'foo'))
self.assertTrue(hasattr(ar, 'engine_id'))
def test_getitem(self):
ar = self.client[:].apply_async(wait, 0.5)
self.assertRaises(TimeoutError, lambda : ar['foo'])
self.assertRaises(TimeoutError, lambda : ar['engine_id'])
ar.get(5)
self.assertRaises(KeyError, lambda : ar['foo'])
self.assertTrue(isinstance(ar['engine_id'], list))
self.assertEquals(ar.engine_id, ar['engine_id'])
def test_single_result(self):
ar = self.client[-1].apply_async(wait, 0.5)
self.assertRaises(TimeoutError, lambda : ar['foo'])
self.assertRaises(TimeoutError, lambda : ar['engine_id'])
self.assertTrue(ar.get(5) == 0.5)
self.assertTrue(isinstance(ar['engine_id'], int))
self.assertTrue(isinstance(ar.engine_id, int))
self.assertEquals(ar.engine_id, ar['engine_id'])
def test_abort(self):
e = self.client[-1]
ar = e.execute('import time; time.sleep(1)', block=False)
ar2 = e.apply_async(lambda : 2)
ar2.abort()
self.assertRaises(error.TaskAborted, ar2.get)
ar.get()
def test_len(self):
v = self.client.load_balanced_view()
ar = v.map_async(lambda x: x, range(10))
self.assertEquals(len(ar), 10)
ar = v.apply_async(lambda x: x, range(10))
self.assertEquals(len(ar), 1)
ar = self.client[:].apply_async(lambda x: x, range(10))
self.assertEquals(len(ar), len(self.client.ids))
def test_wall_time_single(self):
v = self.client.load_balanced_view()
ar = v.apply_async(time.sleep, 0.25)
self.assertRaises(TimeoutError, getattr, ar, 'wall_time')
ar.get(2)
self.assertTrue(ar.wall_time < 1.)
self.assertTrue(ar.wall_time > 0.2)
def test_wall_time_multi(self):
self.minimum_engines(4)
v = self.client[:]
ar = v.apply_async(time.sleep, 0.25)
self.assertRaises(TimeoutError, getattr, ar, 'wall_time')
ar.get(2)
self.assertTrue(ar.wall_time < 1.)
self.assertTrue(ar.wall_time > 0.2)
def test_serial_time_single(self):
v = self.client.load_balanced_view()
ar = v.apply_async(time.sleep, 0.25)
self.assertRaises(TimeoutError, getattr, ar, 'serial_time')
ar.get(2)
self.assertTrue(ar.serial_time < 1.)
self.assertTrue(ar.serial_time > 0.2)
def test_serial_time_multi(self):
self.minimum_engines(4)
v = self.client[:]
ar = v.apply_async(time.sleep, 0.25)
self.assertRaises(TimeoutError, getattr, ar, 'serial_time')
ar.get(2)
self.assertTrue(ar.serial_time < 2.)
self.assertTrue(ar.serial_time > 0.8)
def test_elapsed_single(self):
v = self.client.load_balanced_view()
ar = v.apply_async(time.sleep, 0.25)
while not ar.ready():
time.sleep(0.01)
self.assertTrue(ar.elapsed < 1)
self.assertTrue(ar.elapsed < 1)
ar.get(2)
def test_elapsed_multi(self):
v = self.client[:]
ar = v.apply_async(time.sleep, 0.25)
while not ar.ready():
time.sleep(0.01)
self.assertTrue(ar.elapsed < 1)
self.assertTrue(ar.elapsed < 1)
ar.get(2)
def test_hubresult_timestamps(self):
self.minimum_engines(4)
v = self.client[:]
ar = v.apply_async(time.sleep, 0.25)
ar.get(2)
rc2 = Client(profile='iptest')
# must have try/finally to close second Client, otherwise
# will have dangling sockets causing problems
try:
time.sleep(0.25)
hr = rc2.get_result(ar.msg_ids)
self.assertTrue(hr.elapsed > 0., "got bad elapsed: %s" % hr.elapsed)
hr.get(1)
self.assertTrue(hr.wall_time < ar.wall_time + 0.2, "got bad wall_time: %s > %s" % (hr.wall_time, ar.wall_time))
self.assertEquals(hr.serial_time, ar.serial_time)
finally:
rc2.close()
def test_display_empty_streams_single(self):
"""empty stdout/err are not displayed (single result)"""
self.minimum_engines(1)
v = self.client[-1]
ar = v.execute("print (5555)")
ar.get(5)
with capture_output() as io:
ar.display_outputs()
self.assertEquals(io.stderr, '')
self.assertEquals('5555\n', io.stdout)
ar = v.execute("a=5")
ar.get(5)
with capture_output() as io:
ar.display_outputs()
self.assertEquals(io.stderr, '')
self.assertEquals(io.stdout, '')
def test_display_empty_streams_type(self):
"""empty stdout/err are not displayed (groupby type)"""
self.minimum_engines(1)
v = self.client[:]
ar = v.execute("print (5555)")
ar.get(5)
with capture_output() as io:
ar.display_outputs()
self.assertEquals(io.stderr, '')
self.assertEquals(io.stdout.count('5555'), len(v), io.stdout)
self.assertFalse('\n\n' in io.stdout, io.stdout)
self.assertEquals(io.stdout.count('[stdout:'), len(v), io.stdout)
ar = v.execute("a=5")
ar.get(5)
with capture_output() as io:
ar.display_outputs()
self.assertEquals(io.stderr, '')
self.assertEquals(io.stdout, '')
def test_display_empty_streams_engine(self):
"""empty stdout/err are not displayed (groupby engine)"""
self.minimum_engines(1)
v = self.client[:]
ar = v.execute("print (5555)")
ar.get(5)
with capture_output() as io:
ar.display_outputs('engine')
self.assertEquals(io.stderr, '')
self.assertEquals(io.stdout.count('5555'), len(v), io.stdout)
self.assertFalse('\n\n' in io.stdout, io.stdout)
self.assertEquals(io.stdout.count('[stdout:'), len(v), io.stdout)
ar = v.execute("a=5")
ar.get(5)
with capture_output() as io:
ar.display_outputs('engine')
self.assertEquals(io.stderr, '')
self.assertEquals(io.stdout, '')
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