MAINT: Remove ndict class.

Now that ndict is no longer used in any part of the system during
a backtest, remove all remaining references in tests, etc.

tests/test_ndict.py

@@ -1,107 +0,0 @@
-#
-# Copyright 2012 Quantopian, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-from datetime import datetime
-import pytz
-
-from copy import deepcopy
-
-from zipline.utils.protocol_utils import ndict
-
-
-def test_ndict():
-    nd = ndict({})
-
-    # Properties
-    assert len(nd) == 0
-    assert nd.keys() == []
-    assert nd.values() == []
-    assert list(nd.iteritems()) == []
-
-    # Accessors
-    nd['x'] = 1
-    assert nd.x == 1
-    assert nd['x'] == 1
-    assert nd.get('y') is None
-    assert nd.get('y', 'fizzpop') == 'fizzpop'
-    assert 'x' in nd
-    assert 'y' not in nd
-
-    assert 'x' in nd
-    assert 'y' not in nd
-
-    # Mutability
-    nd2 = ndict({'x': 1})
-    assert nd2.x == 1
-    nd2.x = 2
-    assert nd2.x == 2
-
-    # Class isolation
-    assert '__init__' not in nd
-    assert '__iter__' not in nd
-    assert 'x' not in nd.__dict__
-    assert nd.get('__init__') is None
-    assert 'x' not in set(dir(nd))
-
-    # Comparison
-    nd2 = nd.copy()
-    assert id(nd2) != id(nd)
-    assert nd2 == nd
-    nd2['z'] = 3
-    assert nd2 != nd
-
-    class ndictlike(object):
-        x = 1
-
-    assert {'x': 1} == nd
-    assert ndictlike() != nd
-
-    # Deletion
-    del nd['x']
-    assert 'x' not in nd
-    assert nd.get('x') is None
-
-    for n in xrange(1000):
-        dt = datetime.utcnow().replace(tzinfo=pytz.utc)
-        nd2 = ndict({"dt": dt,
-                     "otherdata": "ishere" * 1000,
-                     "maybeanint": 3})
-
-    nd2.dt2 = dt
-
-
-def test_ndict_deepcopy():
-    def assert_correctly_copied(orig, copy):
-        assert nd == nd_dc, \
-            "Deepcopied ndict should have same keys and values."
-
-        nd_dc.z = 3
-        assert 'z' not in nd, "'z' also added to original ndict."
-
-        nd_dc.y = 10
-        assert nd_dc.y == 10, "value of copied ndict not correctly set."
-        assert nd.y != 10, "value also set of original ndict."
-
-    nd = ndict({'x': 1, 'y': 2})
-    nd_dc = deepcopy(nd)
-    assert_correctly_copied(nd, nd_dc)
-
-    nd = ndict({'x': [1, 2, 3],
-                'y': {1: 1}})
-    nd_dc = deepcopy(nd)
-    assert_correctly_copied(nd, nd_dc)
-    nd_dc.x.append(4)
-    assert nd_dc.x[-1] == 4, "not correctly appended to copied."
-    assert nd.x[-1] != 4, "also copied to original."

tests/test_transforms.py

@@ -22,10 +22,9 @@ import pandas as pd
 from datetime import timedelta, datetime
 from unittest import TestCase
 
-from zipline import ndict
-
 from zipline.utils.test_utils import setup_logger
 
+from zipline.protocol import Event
 from zipline.sources import SpecificEquityTrades
 from zipline.transforms.utils import StatefulTransform, EventWindow
 from zipline.transforms import MovingVWAP
@@ -38,7 +37,7 @@ from zipline.test_algorithms import BatchTransformAlgorithm
 
 
 def to_dt(msg):
-    return ndict({'dt': msg})
+    return Event({'dt': msg})
 
 
 class NoopEventWindow(EventWindow):