Ausgabe der neuen DB Einträge
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hubobel
parent
bad48e1627
commit
cfbbb9ee3d
2399 changed files with 843193 additions and 43 deletions
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# Copyright (c) Twisted Matrix Laboratories.
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# See LICENSE for details.
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"""
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Test cases for L{jelly} object serialization.
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"""
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from __future__ import absolute_import, division
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import datetime
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import decimal
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from twisted.python.compat import unicode
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from twisted.spread import jelly, pb
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from twisted.trial import unittest
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from twisted.test.proto_helpers import StringTransport
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class TestNode(jelly.Jellyable, object):
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"""
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An object to test jellyfying of new style class instances.
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"""
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classAttr = 4
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def __init__(self, parent=None):
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if parent:
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self.id = parent.id + 1
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parent.children.append(self)
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else:
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self.id = 1
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self.parent = parent
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self.children = []
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class A:
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"""
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Dummy class.
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"""
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def amethod(self):
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"""
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Method to be used in serialization tests.
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"""
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def afunc(self):
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"""
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A dummy function to test function serialization.
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"""
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class B:
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"""
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Dummy class.
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"""
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def bmethod(self):
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"""
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Method to be used in serialization tests.
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"""
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class C:
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"""
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Dummy class.
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"""
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def cmethod(self):
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"""
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Method to be used in serialization tests.
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"""
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class D(object):
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"""
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Dummy new-style class.
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"""
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class E(object):
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"""
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Dummy new-style class with slots.
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"""
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__slots__ = ("x", "y")
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def __init__(self, x=None, y=None):
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self.x = x
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self.y = y
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def __getstate__(self):
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return {"x" : self.x, "y" : self.y}
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def __setstate__(self, state):
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self.x = state["x"]
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self.y = state["y"]
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class SimpleJellyTest:
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def __init__(self, x, y):
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self.x = x
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self.y = y
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def isTheSameAs(self, other):
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return self.__dict__ == other.__dict__
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class JellyTests(unittest.TestCase):
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"""
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Testcases for L{jelly} module serialization.
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@cvar decimalData: serialized version of decimal data, to be used in tests.
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@type decimalData: L{list}
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"""
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decimalData = [b'list', [b'decimal', 995, -2], [b'decimal', 0, 0],
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[b'decimal', 123456, 0], [b'decimal', -78901, -3]]
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def _testSecurity(self, inputList, atom):
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"""
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Helper test method to test security options for a type.
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@param inputList: a sample input for the type.
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@type inputList: L{list}
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@param atom: atom identifier for the type.
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@type atom: L{str}
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"""
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c = jelly.jelly(inputList)
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taster = jelly.SecurityOptions()
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taster.allowBasicTypes()
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# By default, it should succeed
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jelly.unjelly(c, taster)
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taster.allowedTypes.pop(atom)
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# But it should raise an exception when disallowed
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self.assertRaises(jelly.InsecureJelly, jelly.unjelly, c, taster)
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def test_methodsNotSelfIdentity(self):
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"""
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If a class change after an instance has been created, L{jelly.unjelly}
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shoud raise a C{TypeError} when trying to unjelly the instance.
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"""
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a = A()
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b = B()
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c = C()
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a.bmethod = c.cmethod
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b.a = a
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savecmethod = C.cmethod
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del C.cmethod
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try:
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self.assertRaises(TypeError, jelly.unjelly, jelly.jelly(b))
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finally:
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C.cmethod = savecmethod
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def test_newStyle(self):
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"""
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Test that a new style class can be jellied and unjellied with its
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objects and attribute values preserved.
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"""
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n = D()
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n.x = 1
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n2 = D()
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n.n2 = n2
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n.n3 = n2
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c = jelly.jelly(n)
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m = jelly.unjelly(c)
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self.assertIsInstance(m, D)
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self.assertIs(m.n2, m.n3)
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self.assertEqual(m.x, 1)
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def test_newStyleWithSlots(self):
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"""
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A class defined with I{slots} can be jellied and unjellied with the
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values for its attributes preserved.
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"""
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n = E()
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n.x = 1
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c = jelly.jelly(n)
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m = jelly.unjelly(c)
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self.assertIsInstance(m, E)
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self.assertEqual(n.x, 1)
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def test_typeOldStyle(self):
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"""
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Test that an old style class type can be jellied and unjellied
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to the original type.
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"""
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t = [C]
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r = jelly.unjelly(jelly.jelly(t))
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self.assertEqual(t, r)
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def test_typeNewStyle(self):
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"""
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Test that a new style class type can be jellied and unjellied
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to the original type.
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"""
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t = [D]
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r = jelly.unjelly(jelly.jelly(t))
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self.assertEqual(t, r)
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def test_typeBuiltin(self):
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"""
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Test that a builtin type can be jellied and unjellied to the original
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type.
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"""
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t = [str]
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r = jelly.unjelly(jelly.jelly(t))
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self.assertEqual(t, r)
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def test_dateTime(self):
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"""
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Jellying L{datetime.timedelta} instances and then unjellying the result
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should produce objects which represent the values of the original
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inputs.
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"""
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dtn = datetime.datetime.now()
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dtd = datetime.datetime.now() - dtn
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inputList = [dtn, dtd]
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c = jelly.jelly(inputList)
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output = jelly.unjelly(c)
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self.assertEqual(inputList, output)
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self.assertIsNot(inputList, output)
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def test_decimal(self):
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"""
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Jellying L{decimal.Decimal} instances and then unjellying the result
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should produce objects which represent the values of the original
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inputs.
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"""
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inputList = [decimal.Decimal('9.95'),
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decimal.Decimal(0),
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decimal.Decimal(123456),
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decimal.Decimal('-78.901')]
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c = jelly.jelly(inputList)
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output = jelly.unjelly(c)
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self.assertEqual(inputList, output)
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self.assertIsNot(inputList, output)
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def test_decimalUnjelly(self):
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"""
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Unjellying the s-expressions produced by jelly for L{decimal.Decimal}
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instances should result in L{decimal.Decimal} instances with the values
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represented by the s-expressions.
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This test also verifies that L{decimalData} contains valid jellied
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data. This is important since L{test_decimalMissing} re-uses
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L{decimalData} and is expected to be unable to produce
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L{decimal.Decimal} instances even though the s-expression correctly
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represents a list of them.
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"""
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expected = [decimal.Decimal('9.95'),
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decimal.Decimal(0),
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decimal.Decimal(123456),
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decimal.Decimal('-78.901')]
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output = jelly.unjelly(self.decimalData)
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self.assertEqual(output, expected)
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def test_decimalSecurity(self):
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"""
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By default, C{decimal} objects should be allowed by
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L{jelly.SecurityOptions}. If not allowed, L{jelly.unjelly} should raise
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L{jelly.InsecureJelly} when trying to unjelly it.
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"""
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inputList = [decimal.Decimal('9.95')]
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self._testSecurity(inputList, b"decimal")
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def test_set(self):
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"""
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Jellying C{set} instances and then unjellying the result
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should produce objects which represent the values of the original
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inputs.
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"""
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inputList = [set([1, 2, 3])]
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output = jelly.unjelly(jelly.jelly(inputList))
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self.assertEqual(inputList, output)
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self.assertIsNot(inputList, output)
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def test_frozenset(self):
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"""
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Jellying L{frozenset} instances and then unjellying the result
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should produce objects which represent the values of the original
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inputs.
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"""
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inputList = [frozenset([1, 2, 3])]
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output = jelly.unjelly(jelly.jelly(inputList))
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self.assertEqual(inputList, output)
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self.assertIsNot(inputList, output)
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def test_setSecurity(self):
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"""
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By default, C{set} objects should be allowed by
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L{jelly.SecurityOptions}. If not allowed, L{jelly.unjelly} should raise
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L{jelly.InsecureJelly} when trying to unjelly it.
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"""
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inputList = [set([1, 2, 3])]
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self._testSecurity(inputList, b"set")
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def test_frozensetSecurity(self):
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"""
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By default, L{frozenset} objects should be allowed by
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L{jelly.SecurityOptions}. If not allowed, L{jelly.unjelly} should raise
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L{jelly.InsecureJelly} when trying to unjelly it.
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"""
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inputList = [frozenset([1, 2, 3])]
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self._testSecurity(inputList, b"frozenset")
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def test_oldSets(self):
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"""
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Test jellying C{sets.Set}: it should serialize to the same thing as
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C{set} jelly, and be unjellied as C{set} if available.
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"""
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inputList = [jelly._sets.Set([1, 2, 3])]
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inputJelly = jelly.jelly(inputList)
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self.assertEqual(inputJelly, jelly.jelly([set([1, 2, 3])]))
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output = jelly.unjelly(inputJelly)
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# Even if the class is different, it should coerce to the same list
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self.assertEqual(list(inputList[0]), list(output[0]))
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if set is jelly._sets.Set:
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self.assertIsInstance(output[0], jelly._sets.Set)
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else:
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self.assertIsInstance(output[0], set)
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if not jelly._sets:
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test_oldSets.skip = "sets.Set is gone in Python 3 and higher"
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def test_oldImmutableSets(self):
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"""
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Test jellying C{sets.ImmutableSet}: it should serialize to the same
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thing as L{frozenset} jelly, and be unjellied as L{frozenset} if
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available.
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"""
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inputList = [jelly._sets.ImmutableSet([1, 2, 3])]
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inputJelly = jelly.jelly(inputList)
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self.assertEqual(inputJelly, jelly.jelly([frozenset([1, 2, 3])]))
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output = jelly.unjelly(inputJelly)
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# Even if the class is different, it should coerce to the same list
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self.assertEqual(list(inputList[0]), list(output[0]))
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if frozenset is jelly._sets.ImmutableSet:
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self.assertIsInstance(output[0], jelly._sets.ImmutableSet)
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else:
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self.assertIsInstance(output[0], frozenset)
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if not jelly._sets:
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test_oldImmutableSets.skip = (
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"sets.ImmutableSets is gone in Python 3 and higher")
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def test_simple(self):
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"""
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Simplest test case.
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"""
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self.assertTrue(SimpleJellyTest('a', 'b').isTheSameAs(
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SimpleJellyTest('a', 'b')))
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a = SimpleJellyTest(1, 2)
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cereal = jelly.jelly(a)
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b = jelly.unjelly(cereal)
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self.assertTrue(a.isTheSameAs(b))
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def test_identity(self):
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"""
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Test to make sure that objects retain identity properly.
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"""
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x = []
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y = (x)
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x.append(y)
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x.append(y)
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self.assertIs(x[0], x[1])
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self.assertIs(x[0][0], x)
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s = jelly.jelly(x)
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z = jelly.unjelly(s)
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self.assertIs(z[0], z[1])
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self.assertIs(z[0][0], z)
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def test_unicode(self):
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x = unicode('blah')
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y = jelly.unjelly(jelly.jelly(x))
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self.assertEqual(x, y)
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self.assertEqual(type(x), type(y))
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def test_stressReferences(self):
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reref = []
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toplevelTuple = ({'list': reref}, reref)
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reref.append(toplevelTuple)
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s = jelly.jelly(toplevelTuple)
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z = jelly.unjelly(s)
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self.assertIs(z[0]['list'], z[1])
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self.assertIs(z[0]['list'][0], z)
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def test_moreReferences(self):
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a = []
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t = (a,)
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a.append((t,))
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s = jelly.jelly(t)
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z = jelly.unjelly(s)
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self.assertIs(z[0][0][0], z)
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def test_typeSecurity(self):
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"""
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Test for type-level security of serialization.
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"""
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taster = jelly.SecurityOptions()
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dct = jelly.jelly({})
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self.assertRaises(jelly.InsecureJelly, jelly.unjelly, dct, taster)
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def test_newStyleClasses(self):
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uj = jelly.unjelly(D)
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self.assertIs(D, uj)
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def test_lotsaTypes(self):
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"""
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Test for all types currently supported in jelly
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"""
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a = A()
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jelly.unjelly(jelly.jelly(a))
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jelly.unjelly(jelly.jelly(a.amethod))
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items = [afunc, [1, 2, 3], not bool(1), bool(1), 'test', 20.3,
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(1, 2, 3), None, A, unittest, {'a': 1}, A.amethod]
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for i in items:
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self.assertEqual(i, jelly.unjelly(jelly.jelly(i)))
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def test_setState(self):
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global TupleState
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class TupleState:
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def __init__(self, other):
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self.other = other
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def __getstate__(self):
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return (self.other,)
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def __setstate__(self, state):
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self.other = state[0]
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def __hash__(self):
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return hash(self.other)
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a = A()
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t1 = TupleState(a)
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t2 = TupleState(a)
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t3 = TupleState((t1, t2))
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d = {t1: t1, t2: t2, t3: t3, "t3": t3}
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t3prime = jelly.unjelly(jelly.jelly(d))["t3"]
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self.assertIs(t3prime.other[0].other, t3prime.other[1].other)
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def test_classSecurity(self):
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"""
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Test for class-level security of serialization.
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"""
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taster = jelly.SecurityOptions()
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taster.allowInstancesOf(A, B)
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a = A()
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b = B()
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c = C()
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# add a little complexity to the data
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a.b = b
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a.c = c
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# and a backreference
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a.x = b
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b.c = c
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# first, a friendly insecure serialization
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friendly = jelly.jelly(a, taster)
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x = jelly.unjelly(friendly, taster)
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self.assertIsInstance(x.c, jelly.Unpersistable)
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# now, a malicious one
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mean = jelly.jelly(a)
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self.assertRaises(jelly.InsecureJelly, jelly.unjelly, mean, taster)
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self.assertIs(x.x, x.b, "Identity mismatch")
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# test class serialization
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friendly = jelly.jelly(A, taster)
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x = jelly.unjelly(friendly, taster)
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self.assertIs(x, A, "A came back: %s" % x)
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def test_unjellyable(self):
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"""
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Test that if Unjellyable is used to deserialize a jellied object,
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state comes out right.
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"""
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class JellyableTestClass(jelly.Jellyable):
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pass
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jelly.setUnjellyableForClass(JellyableTestClass, jelly.Unjellyable)
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input = JellyableTestClass()
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input.attribute = 'value'
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output = jelly.unjelly(jelly.jelly(input))
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self.assertEqual(output.attribute, 'value')
|
||||
self.assertIsInstance(output, jelly.Unjellyable)
|
||||
|
||||
|
||||
def test_persistentStorage(self):
|
||||
perst = [{}, 1]
|
||||
def persistentStore(obj, jel, perst = perst):
|
||||
perst[1] = perst[1] + 1
|
||||
perst[0][perst[1]] = obj
|
||||
return str(perst[1])
|
||||
|
||||
def persistentLoad(pidstr, unj, perst = perst):
|
||||
pid = int(pidstr)
|
||||
return perst[0][pid]
|
||||
|
||||
a = SimpleJellyTest(1, 2)
|
||||
b = SimpleJellyTest(3, 4)
|
||||
c = SimpleJellyTest(5, 6)
|
||||
|
||||
a.b = b
|
||||
a.c = c
|
||||
c.b = b
|
||||
|
||||
jel = jelly.jelly(a, persistentStore = persistentStore)
|
||||
x = jelly.unjelly(jel, persistentLoad = persistentLoad)
|
||||
|
||||
self.assertIs(x.b, x.c.b)
|
||||
self.assertTrue(perst[0], "persistentStore was not called.")
|
||||
self.assertIs(x.b, a.b, "Persistent storage identity failure.")
|
||||
|
||||
|
||||
def test_newStyleClassesAttributes(self):
|
||||
n = TestNode()
|
||||
n1 = TestNode(n)
|
||||
TestNode(n1)
|
||||
TestNode(n)
|
||||
# Jelly it
|
||||
jel = jelly.jelly(n)
|
||||
m = jelly.unjelly(jel)
|
||||
# Check that it has been restored ok
|
||||
self._check_newstyle(n, m)
|
||||
|
||||
|
||||
def _check_newstyle(self, a, b):
|
||||
self.assertEqual(a.id, b.id)
|
||||
self.assertEqual(a.classAttr, 4)
|
||||
self.assertEqual(b.classAttr, 4)
|
||||
self.assertEqual(len(a.children), len(b.children))
|
||||
for x, y in zip(a.children, b.children):
|
||||
self._check_newstyle(x, y)
|
||||
|
||||
|
||||
def test_referenceable(self):
|
||||
"""
|
||||
A L{pb.Referenceable} instance jellies to a structure which unjellies to
|
||||
a L{pb.RemoteReference}. The C{RemoteReference} has a I{luid} that
|
||||
matches up with the local object key in the L{pb.Broker} which sent the
|
||||
L{Referenceable}.
|
||||
"""
|
||||
ref = pb.Referenceable()
|
||||
jellyBroker = pb.Broker()
|
||||
jellyBroker.makeConnection(StringTransport())
|
||||
j = jelly.jelly(ref, invoker=jellyBroker)
|
||||
|
||||
unjellyBroker = pb.Broker()
|
||||
unjellyBroker.makeConnection(StringTransport())
|
||||
|
||||
uj = jelly.unjelly(j, invoker=unjellyBroker)
|
||||
self.assertIn(uj.luid, jellyBroker.localObjects)
|
||||
|
||||
|
||||
|
||||
class JellyDeprecationTests(unittest.TestCase):
|
||||
"""
|
||||
Tests for deprecated Jelly things
|
||||
"""
|
||||
|
||||
def test_deprecatedInstanceAtom(self):
|
||||
"""
|
||||
L{jelly.instance_atom} is deprecated since 15.0.0.
|
||||
"""
|
||||
jelly.instance_atom
|
||||
warnings = self.flushWarnings([self.test_deprecatedInstanceAtom])
|
||||
self.assertEqual(len(warnings), 1)
|
||||
self.assertEqual(
|
||||
warnings[0]['message'],
|
||||
'twisted.spread.jelly.instance_atom was deprecated in Twisted '
|
||||
'15.0.0: instance_atom is unused within Twisted.')
|
||||
self.assertEqual(
|
||||
warnings[0]['category'],
|
||||
DeprecationWarning)
|
||||
|
||||
|
||||
def test_deprecatedUnjellyingInstanceAtom(self):
|
||||
"""
|
||||
Unjellying the instance atom is deprecated with 15.0.0.
|
||||
"""
|
||||
jelly.unjelly(
|
||||
["instance",
|
||||
["class", "twisted.spread.test.test_jelly.A"],
|
||||
["dictionary"]])
|
||||
warnings = self.flushWarnings()
|
||||
self.assertEqual(len(warnings), 1)
|
||||
self.assertEqual(
|
||||
warnings[0]['message'],
|
||||
"Unjelly support for the instance atom is deprecated since "
|
||||
"Twisted 15.0.0. Upgrade peer for modern instance support.")
|
||||
self.assertEqual(
|
||||
warnings[0]['category'],
|
||||
DeprecationWarning)
|
||||
|
||||
|
||||
|
||||
class ClassA(pb.Copyable, pb.RemoteCopy):
|
||||
def __init__(self):
|
||||
self.ref = ClassB(self)
|
||||
|
||||
|
||||
|
||||
class ClassB(pb.Copyable, pb.RemoteCopy):
|
||||
def __init__(self, ref):
|
||||
self.ref = ref
|
||||
|
||||
|
||||
|
||||
class CircularReferenceTests(unittest.TestCase):
|
||||
"""
|
||||
Tests for circular references handling in the jelly/unjelly process.
|
||||
"""
|
||||
|
||||
def test_simpleCircle(self):
|
||||
jelly.setUnjellyableForClass(ClassA, ClassA)
|
||||
jelly.setUnjellyableForClass(ClassB, ClassB)
|
||||
a = jelly.unjelly(jelly.jelly(ClassA()))
|
||||
self.assertIs(a.ref.ref, a,
|
||||
"Identity not preserved in circular reference")
|
||||
|
||||
|
||||
def test_circleWithInvoker(self):
|
||||
class DummyInvokerClass:
|
||||
pass
|
||||
dummyInvoker = DummyInvokerClass()
|
||||
dummyInvoker.serializingPerspective = None
|
||||
a0 = ClassA()
|
||||
jelly.setUnjellyableForClass(ClassA, ClassA)
|
||||
jelly.setUnjellyableForClass(ClassB, ClassB)
|
||||
j = jelly.jelly(a0, invoker=dummyInvoker)
|
||||
a1 = jelly.unjelly(j)
|
||||
self.failUnlessIdentical(a1.ref.ref, a1,
|
||||
"Identity not preserved in circular reference")
|
||||
|
||||
|
||||
def test_set(self):
|
||||
"""
|
||||
Check that a C{set} can contain a circular reference and be serialized
|
||||
and unserialized without losing the reference.
|
||||
"""
|
||||
s = set()
|
||||
a = SimpleJellyTest(s, None)
|
||||
s.add(a)
|
||||
res = jelly.unjelly(jelly.jelly(a))
|
||||
self.assertIsInstance(res.x, set)
|
||||
self.assertEqual(list(res.x), [res])
|
||||
|
||||
|
||||
def test_frozenset(self):
|
||||
"""
|
||||
Check that a L{frozenset} can contain a circular reference and be
|
||||
serialized and unserialized without losing the reference.
|
||||
"""
|
||||
a = SimpleJellyTest(None, None)
|
||||
s = frozenset([a])
|
||||
a.x = s
|
||||
res = jelly.unjelly(jelly.jelly(a))
|
||||
self.assertIsInstance(res.x, frozenset)
|
||||
self.assertEqual(list(res.x), [res])
|
||||
Loading…
Add table
Add a link
Reference in a new issue