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"""test serialization with newserialized"""
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from unittest import TestCase
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import nose.tools as nt
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from IPython.testing.parametric import parametric
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from IPython.utils import newserialized as ns
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from IPython.utils.pickleutil import can, uncan, CannedObject, CannedFunction
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from IPython.zmq.parallel.tests.clienttest import skip_without
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class CanningTestCase(TestCase):
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def test_canning(self):
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d = dict(a=5,b=6)
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cd = can(d)
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nt.assert_true(isinstance(cd, dict))
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def test_canned_function(self):
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f = lambda : 7
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cf = can(f)
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nt.assert_true(isinstance(cf, CannedFunction))
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@parametric
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def test_can_roundtrip(cls):
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objs = [
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dict(),
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set(),
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list(),
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['a',1,['a',1],u'e'],
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]
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return map(cls.run_roundtrip, objs)
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@classmethod
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def run_roundtrip(cls, obj):
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o = uncan(can(obj))
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nt.assert_equals(obj, o)
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def test_serialized_interfaces(self):
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us = {'a':10, 'b':range(10)}
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s = ns.serialize(us)
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uus = ns.unserialize(s)
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nt.assert_true(isinstance(s, ns.SerializeIt))
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nt.assert_equals(uus, us)
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def test_pickle_serialized(self):
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obj = {'a':1.45345, 'b':'asdfsdf', 'c':10000L}
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original = ns.UnSerialized(obj)
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originalSer = ns.SerializeIt(original)
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firstData = originalSer.getData()
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firstTD = originalSer.getTypeDescriptor()
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firstMD = originalSer.getMetadata()
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nt.assert_equals(firstTD, 'pickle')
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nt.assert_equals(firstMD, {})
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unSerialized = ns.UnSerializeIt(originalSer)
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secondObj = unSerialized.getObject()
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for k, v in secondObj.iteritems():
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nt.assert_equals(obj[k], v)
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secondSer = ns.SerializeIt(ns.UnSerialized(secondObj))
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nt.assert_equals(firstData, secondSer.getData())
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nt.assert_equals(firstTD, secondSer.getTypeDescriptor() )
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nt.assert_equals(firstMD, secondSer.getMetadata())
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@skip_without('numpy')
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def test_ndarray_serialized(self):
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import numpy
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a = numpy.linspace(0.0, 1.0, 1000)
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unSer1 = ns.UnSerialized(a)
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ser1 = ns.SerializeIt(unSer1)
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td = ser1.getTypeDescriptor()
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nt.assert_equals(td, 'ndarray')
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md = ser1.getMetadata()
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nt.assert_equals(md['shape'], a.shape)
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nt.assert_equals(md['dtype'], a.dtype.str)
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buff = ser1.getData()
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nt.assert_equals(buff, numpy.getbuffer(a))
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s = ns.Serialized(buff, td, md)
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final = ns.unserialize(s)
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nt.assert_equals(numpy.getbuffer(a), numpy.getbuffer(final))
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nt.assert_true((a==final).all())
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nt.assert_equals(a.dtype.str, final.dtype.str)
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nt.assert_equals(a.shape, final.shape)
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# test non-copying:
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a[2] = 1e9
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nt.assert_true((a==final).all())
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