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"""Tests for asyncresult.py
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Authors:
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* Min RK
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"""
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#-------------------------------------------------------------------------------
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# Copyright (C) 2011 The IPython Development Team
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#
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# Distributed under the terms of the BSD License. The full license is in
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# the file COPYING, distributed as part of this software.
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#-------------------------------------------------------------------------------
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#-------------------------------------------------------------------------------
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# Imports
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#-------------------------------------------------------------------------------
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from IPython.parallel.error import TimeoutError
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from IPython.parallel.tests import add_engines
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from .clienttest import ClusterTestCase
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def setup():
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add_engines(2)
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def wait(n):
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import time
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time.sleep(n)
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return n
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class AsyncResultTest(ClusterTestCase):
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def test_single_result(self):
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eid = self.client.ids[-1]
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ar = self.client[eid].apply_async(lambda : 42)
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self.assertEquals(ar.get(), 42)
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ar = self.client[[eid]].apply_async(lambda : 42)
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self.assertEquals(ar.get(), [42])
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ar = self.client[-1:].apply_async(lambda : 42)
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self.assertEquals(ar.get(), [42])
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def test_get_after_done(self):
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ar = self.client[-1].apply_async(lambda : 42)
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ar.wait()
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self.assertTrue(ar.ready())
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self.assertEquals(ar.get(), 42)
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self.assertEquals(ar.get(), 42)
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def test_get_before_done(self):
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ar = self.client[-1].apply_async(wait, 0.1)
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self.assertRaises(TimeoutError, ar.get, 0)
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ar.wait(0)
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self.assertFalse(ar.ready())
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self.assertEquals(ar.get(), 0.1)
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def test_get_after_error(self):
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ar = self.client[-1].apply_async(lambda : 1/0)
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ar.wait()
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self.assertRaisesRemote(ZeroDivisionError, ar.get)
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self.assertRaisesRemote(ZeroDivisionError, ar.get)
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self.assertRaisesRemote(ZeroDivisionError, ar.get_dict)
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def test_get_dict(self):
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n = len(self.client)
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ar = self.client[:].apply_async(lambda : 5)
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self.assertEquals(ar.get(), [5]*n)
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d = ar.get_dict()
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self.assertEquals(sorted(d.keys()), sorted(self.client.ids))
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for eid,r in d.iteritems():
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self.assertEquals(r, 5)
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