test AsyncResult.get_dict with single results and invalid input

IPython/parallel/tests/test_asyncresult.py

@@ -1,294 +1,311 b''
 """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
 
 import nose.tools as nt
 
 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
 
+def echo(x):
+    return x
+
 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.assertEqual(ar.get(), 42)
         ar = self.client[[eid]].apply_async(lambda : 42)
         self.assertEqual(ar.get(), [42])
         ar = self.client[-1:].apply_async(lambda : 42)
         self.assertEqual(ar.get(), [42])
 
     def test_get_after_done(self):
         ar = self.client[-1].apply_async(lambda : 42)
         ar.wait()
         self.assertTrue(ar.ready())
         self.assertEqual(ar.get(), 42)
         self.assertEqual(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.assertEqual(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.assertEqual(ar.get(), [5]*n)
         d = ar.get_dict()
         self.assertEqual(sorted(d.keys()), sorted(self.client.ids))
         for eid,r in d.iteritems():
             self.assertEqual(r, 5)
     
+    def test_get_dict_single(self):
+        view = self.client[-1]
+        for v in (range(5), 5, ('abc', 'def'), 'string'):
+            ar = view.apply_async(echo, v)
+            self.assertEqual(ar.get(), v)
+            d = ar.get_dict()
+            self.assertEqual(d, {view.targets : v})
+    
+    def test_get_dict_bad(self):
+        ar = self.client[:].apply_async(lambda : 5)
+        ar2 = self.client[:].apply_async(lambda : 5)
+        ar = self.client.get_result(ar.msg_ids + ar2.msg_ids)
+        self.assertRaises(ValueError, ar.get_dict)
+    
     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.assertEqual(ar.engine_id, [None] * len(ar))
         self.assertRaises(AttributeError, lambda : ar._foo)
         self.assertRaises(AttributeError, lambda : ar.__length_hint__())
         self.assertRaises(AttributeError, lambda : ar.foo)
         self.assertFalse(hasattr(ar, '__length_hint__'))
         self.assertFalse(hasattr(ar, 'foo'))
         self.assertTrue(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.assertEqual(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.assertEqual(ar['engine_id'], [None] * len(ar))
         self.assertRaises(KeyError, lambda : ar['foo'])
         ar.get(5)
         self.assertRaises(KeyError, lambda : ar['foo'])
         self.assertTrue(isinstance(ar['engine_id'], list))
         self.assertEqual(ar.engine_id, ar['engine_id'])
     
     def test_single_result(self):
         ar = self.client[-1].apply_async(wait, 0.5)
         self.assertRaises(KeyError, lambda : ar['foo'])
         self.assertEqual(ar['engine_id'], None)
         self.assertTrue(ar.get(5) == 0.5)
         self.assertTrue(isinstance(ar['engine_id'], int))
         self.assertTrue(isinstance(ar.engine_id, int))
         self.assertEqual(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.assertEqual(len(ar), 10)
         ar = v.apply_async(lambda x: x, range(10))
         self.assertEqual(len(ar), 1)
         ar = self.client[:].apply_async(lambda x: x, range(10))
         self.assertEqual(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.assertEqual(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.assertEqual(io.stderr, '')
         self.assertEqual('5555\n', io.stdout)
 
         ar = v.execute("a=5")
         ar.get(5)
         with capture_output() as io:
             ar.display_outputs()
         self.assertEqual(io.stderr, '')
         self.assertEqual(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.assertEqual(io.stderr, '')
         self.assertEqual(io.stdout.count('5555'), len(v), io.stdout)
         self.assertFalse('\n\n' in io.stdout, io.stdout)
         self.assertEqual(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.assertEqual(io.stderr, '')
         self.assertEqual(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.assertEqual(io.stderr, '')
         self.assertEqual(io.stdout.count('5555'), len(v), io.stdout)
         self.assertFalse('\n\n' in io.stdout, io.stdout)
         self.assertEqual(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.assertEqual(io.stderr, '')
         self.assertEqual(io.stdout, '')
     
     def test_await_data(self):
         """asking for ar.data flushes outputs"""
         self.minimum_engines(1)
         
         v = self.client[-1]
         ar = v.execute('\n'.join([
             "import time",
             "from IPython.kernel.zmq.datapub import publish_data",
             "for i in range(5):",
             "    publish_data(dict(i=i))",
             "    time.sleep(0.1)",
         ]), block=False)
         found = set()
         tic = time.time()
         # timeout after 10s
         while time.time() <= tic + 10:
             if ar.data:
                 found.add(ar.data['i'])
                 if ar.data['i'] == 4:
                     break
             time.sleep(0.05)
         
         ar.get(5)
         nt.assert_in(4, found)
         self.assertTrue(len(found) > 1, "should have seen data multiple times, but got: %s" % found)