# encoding: utf-8

"""This file contains unittests for the shell.py module."""

__docformat__ = "restructuredtext en"

#-------------------------------------------------------------------------------
#  Copyright (C) 2008  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
#-------------------------------------------------------------------------------

try:
    import zope.interface as zi
    from twisted.trial import unittest
    from IPython.testing.util import DeferredTestCase

    from IPython.kernel.newserialized import \
        ISerialized, \
        IUnSerialized, \
        Serialized, \
        UnSerialized, \
        SerializeIt, \
        UnSerializeIt
except ImportError:
    pass
else:
    #-------------------------------------------------------------------------------
    # Tests
    #-------------------------------------------------------------------------------
    
    class SerializedTestCase(unittest.TestCase):
    
        def setUp(self):
            pass
        
        def tearDown(self):
            pass
        
        def testSerializedInterfaces(self):

            us = UnSerialized({'a':10, 'b':range(10)})
            s = ISerialized(us)
            uss = IUnSerialized(s)
            self.assert_(ISerialized.providedBy(s))
            self.assert_(IUnSerialized.providedBy(us))
            self.assert_(IUnSerialized.providedBy(uss))
            for m in list(ISerialized):
                self.assert_(hasattr(s, m))
            for m in list(IUnSerialized):
                self.assert_(hasattr(us, m))
            for m in list(IUnSerialized):
                self.assert_(hasattr(uss, m))

        def testPickleSerialized(self):
            obj = {'a':1.45345, 'b':'asdfsdf', 'c':10000L}
            original = UnSerialized(obj)
            originalSer = ISerialized(original)
            firstData = originalSer.getData()
            firstTD = originalSer.getTypeDescriptor()
            firstMD = originalSer.getMetadata()
            self.assert_(firstTD == 'pickle')
            self.assert_(firstMD == {})
            unSerialized = IUnSerialized(originalSer)
            secondObj = unSerialized.getObject()
            for k, v in secondObj.iteritems():
                self.assert_(obj[k] == v)
            secondSer = ISerialized(UnSerialized(secondObj))
            self.assert_(firstData == secondSer.getData())
            self.assert_(firstTD == secondSer.getTypeDescriptor() )
            self.assert_(firstMD == secondSer.getMetadata())
        
        def testNDArraySerialized(self):
            try:
                import numpy
            except ImportError:
                pass
            else:
                a = numpy.linspace(0.0, 1.0, 1000)
                unSer1 = UnSerialized(a)
                ser1 = ISerialized(unSer1)
                td = ser1.getTypeDescriptor()
                self.assert_(td == 'ndarray')
                md = ser1.getMetadata()
                self.assert_(md['shape'] == a.shape)
                self.assert_(md['dtype'] == a.dtype.str)
                buff = ser1.getData()
                self.assert_(buff == numpy.getbuffer(a))
                s = Serialized(buff, td, md)
                us = IUnSerialized(s)
                final = us.getObject()
                self.assert_(numpy.getbuffer(a) == numpy.getbuffer(final))
                self.assert_(a.dtype.str == final.dtype.str)
                self.assert_(a.shape == final.shape)