/usr/share/pyshared/mdp/test/test_extension.py is in python-mdp 3.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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import mdp
import sys
import py.test
def teardown_function(function):
"""Deactivate all extensions and remove testing extensions."""
mdp.deactivate_extensions(mdp.get_active_extensions())
for key in mdp.get_extensions().copy():
if key.startswith("__test"):
del mdp.get_extensions()[key]
def testSimpleExtension():
"""Test for a single new extension."""
class TestExtensionNode(mdp.ExtensionNode):
extension_name = "__test"
def _testtest(self):
pass
_testtest_attr = 1337
class TestSFANode(TestExtensionNode, mdp.nodes.SFANode):
def _testtest(self):
return 42
_testtest_attr = 1338
sfa_node = mdp.nodes.SFANode()
mdp.activate_extension("__test")
assert sfa_node._testtest() == 42
assert sfa_node._testtest_attr == 1338
mdp.deactivate_extension("__test")
assert not hasattr(mdp.nodes.SFANode, "_testtest")
def testContextDecorator():
"""Test the with_extension function decorator."""
class Test1ExtensionNode(mdp.ExtensionNode):
extension_name = "__test1"
def _testtest(self):
pass
@mdp.with_extension("__test1")
def test():
return mdp.get_active_extensions()
# check that the extension is activated
assert mdp.get_active_extensions() == []
active = test()
assert active == ["__test1"]
assert mdp.get_active_extensions() == []
# check that it is only deactiveted if it was activated there
mdp.activate_extension("__test1")
active = test()
assert active == ["__test1"]
assert mdp.get_active_extensions() == ["__test1"]
def testContextManager1():
"""Test that the context manager activates extensions."""
class Test1ExtensionNode(mdp.ExtensionNode):
extension_name = "__test1"
def _testtest(self):
pass
class Test2ExtensionNode(mdp.ExtensionNode):
extension_name = "__test2"
def _testtest(self):
pass
assert mdp.get_active_extensions() == []
with mdp.extension('__test1'):
assert mdp.get_active_extensions() == ['__test1']
assert mdp.get_active_extensions() == []
# with multiple extensions
with mdp.extension(['__test1', '__test2']):
active = mdp.get_active_extensions()
assert '__test1' in active
assert '__test2' in active
assert mdp.get_active_extensions() == []
mdp.activate_extension("__test1")
# Test that only activated extensions are deactiveted.
with mdp.extension(['__test1', '__test2']):
active = mdp.get_active_extensions()
assert '__test1' in active
assert '__test2' in active
assert mdp.get_active_extensions() == ["__test1"]
def testDecoratorExtension():
"""Test extension decorator with a single new extension."""
class TestExtensionNode(mdp.ExtensionNode):
extension_name = "__test"
def _testtest(self):
pass
@mdp.extension_method("__test", mdp.nodes.SFANode, "_testtest")
def _sfa_testtest(self):
return 42
@mdp.extension_method("__test", mdp.nodes.SFA2Node)
def _testtest(self):
return 42 + _sfa_testtest(self)
sfa_node = mdp.nodes.SFANode()
sfa2_node = mdp.nodes.SFA2Node()
mdp.activate_extension("__test")
assert sfa_node._testtest() == 42
assert sfa2_node._testtest() == 84
mdp.deactivate_extension("__test")
assert not hasattr(mdp.nodes.SFANode, "_testtest")
assert not hasattr(mdp.nodes.SFA2Node, "_testtest")
def testDecoratorInheritance():
"""Test inhertiance with decorators for a single new extension."""
class TestExtensionNode(mdp.ExtensionNode):
extension_name = "__test"
def _testtest(self):
pass
@mdp.extension_method("__test", mdp.nodes.SFANode, "_testtest")
def _sfa_testtest(self):
return 42
@mdp.extension_method("__test", mdp.nodes.SFA2Node)
def _testtest(self):
return 42 + super(mdp.nodes.SFA2Node, self)._testtest()
sfa_node = mdp.nodes.SFANode()
sfa2_node = mdp.nodes.SFA2Node()
mdp.activate_extension("__test")
assert sfa_node._testtest() == 42
assert sfa2_node._testtest() == 84
def testExtensionInheritance():
"""Test inheritance of extension nodes."""
class TestExtensionNode(mdp.ExtensionNode):
extension_name = "__test"
def _testtest(self):
pass
class TestSFANode(TestExtensionNode, mdp.nodes.SFANode):
def _testtest(self):
return 42
_testtest_attr = 1337
class TestSFA2Node(TestSFANode, mdp.nodes.SFA2Node):
def _testtest(self):
if sys.version_info[0] < 3:
return TestSFANode._testtest.im_func(self)
else:
return TestSFANode._testtest(self)
sfa2_node = mdp.nodes.SFA2Node()
mdp.activate_extension("__test")
assert sfa2_node._testtest() == 42
assert sfa2_node._testtest_attr == 1337
def testExtensionInheritance2():
"""Test inheritance of extension nodes, using super."""
class TestExtensionNode(mdp.ExtensionNode):
extension_name = "__test"
def _testtest(self):
pass
class TestSFANode(TestExtensionNode, mdp.nodes.SFANode):
def _testtest(self):
return 42
class TestSFA2Node(mdp.nodes.SFA2Node, TestSFANode):
def _testtest(self):
return super(mdp.nodes.SFA2Node, self)._testtest()
sfa2_node = mdp.nodes.SFA2Node()
mdp.activate_extension("__test")
assert sfa2_node._testtest() == 42
def testExtensionInheritance3():
"""Test explicit use of extension nodes and inheritance."""
class TestExtensionNode(mdp.ExtensionNode):
extension_name = "__test"
def _testtest(self):
pass
class TestSFANode(TestExtensionNode, mdp.nodes.SFANode):
def _testtest(self):
return 42
# Note the inheritance order, otherwise this would not work.
class TestSFA2Node(mdp.nodes.SFA2Node, TestSFANode):
def _testtest(self):
return super(mdp.nodes.SFA2Node, self)._testtest()
sfa2_node = TestSFA2Node()
assert sfa2_node._testtest() == 42
def testMultipleExtensions():
"""Test behavior of multiple extensions."""
class Test1ExtensionNode(mdp.ExtensionNode, mdp.Node):
extension_name = "__test1"
def _testtest1(self):
pass
class Test2ExtensionNode(mdp.ExtensionNode, mdp.Node):
extension_name = "__test2"
def _testtest2(self):
pass
mdp.activate_extension("__test1")
node = mdp.Node()
node._testtest1()
mdp.activate_extension("__test2")
node._testtest2()
mdp.deactivate_extension("__test1")
assert not hasattr(mdp.nodes.SFANode, "_testtest1")
mdp.activate_extension("__test1")
node._testtest1()
mdp.deactivate_extensions(["__test1", "__test2"])
assert not hasattr(mdp.nodes.SFANode, "_testtest1")
assert not hasattr(mdp.nodes.SFANode, "_testtest2")
def testExtCollision():
"""Test the check for method name collision."""
class Test1ExtensionNode(mdp.ExtensionNode, mdp.Node):
extension_name = "__test1"
def _testtest(self):
pass
class Test2ExtensionNode(mdp.ExtensionNode, mdp.Node):
extension_name = "__test2"
def _testtest(self):
pass
py.test.raises(mdp.ExtensionException,
mdp.activate_extensions, ["__test1", "__test2"])
# none of the extension should be active after the exception
assert not hasattr(mdp.Node, "_testtest")
def testExtensionInheritanceInjection():
"""Test the injection of inherited methods"""
class TestNode(object):
def _test1(self):
return 0
class TestExtensionNode(mdp.ExtensionNode):
extension_name = "__test"
def _test1(self):
return 1
def _test2(self):
return 2
def _test3(self):
return 3
class TestNodeExt(TestExtensionNode, TestNode):
def _test2(self):
return "2b"
@mdp.extension_method("__test", TestNode)
def _test4(self):
return 4
test_node = TestNode()
mdp.activate_extension("__test")
assert test_node._test1() == 1
assert test_node._test2() == "2b"
assert test_node._test3() == 3
assert test_node._test4() == 4
mdp.deactivate_extension("__test")
assert test_node._test1() == 0
assert not hasattr(test_node, "_test2")
assert not hasattr(test_node, "_test3")
assert not hasattr(test_node, "_test4")
def testExtensionInheritanceInjectionNonExtension():
"""Test non_extension method injection."""
class TestExtensionNode(mdp.ExtensionNode):
extension_name = "__test"
def _execute(self):
return 0
class TestNode(mdp.Node):
# no _execute method
pass
class ExtendedTestNode(TestExtensionNode, TestNode):
pass
test_node = TestNode()
mdp.activate_extension('__test')
assert hasattr(test_node, "_non_extension__execute")
mdp.deactivate_extension('__test')
assert not hasattr(test_node, "_non_extension__execute")
assert not hasattr(test_node, "_extension_for__execute")
# test that the non-native _execute has been completely removed
assert "_execute" not in test_node.__class__.__dict__
def testExtensionInheritanceInjectionNonExtension2():
"""Test non_extension method injection."""
class TestExtensionNode(mdp.ExtensionNode):
extension_name = "__test"
def _execute(self):
return 0
class TestNode(mdp.Node):
def _execute(self):
return 1
class ExtendedTestNode(TestExtensionNode, TestNode):
pass
test_node = TestNode()
mdp.activate_extension('__test')
# test that non-extended attribute has been added as well
assert hasattr(test_node, "_non_extension__execute")
mdp.deactivate_extension('__test')
assert not hasattr(test_node, "_non_extension__execute")
assert not hasattr(test_node, "_extension_for__execute")
# test that the native _execute has been preserved
assert "_execute" in test_node.__class__.__dict__
def testExtensionInheritanceTwoExtensions():
"""Test non_extension injection for multiple extensions."""
class Test1ExtensionNode(mdp.ExtensionNode):
extension_name = "__test1"
def _execute(self):
return 1
class Test2ExtensionNode(mdp.ExtensionNode):
extension_name = "__test2"
class Test3ExtensionNode(mdp.ExtensionNode):
extension_name = "__test3"
def _execute(self):
return "3a"
class TestNode1(mdp.Node):
pass
class TestNode2(TestNode1):
pass
class ExtendedTest1Node2(Test1ExtensionNode, TestNode2):
pass
class ExtendedTest2Node1(Test2ExtensionNode, TestNode1):
def _execute(self):
return 2
class ExtendedTest3Node1(Test3ExtensionNode, TestNode1):
def _execute(self):
return "3b"
test_node = TestNode2()
mdp.activate_extension('__test2')
assert test_node._execute() == 2
mdp.deactivate_extension('__test2')
# in this order TestNode2 should get execute from __test1,
# the later addition by __test1 to TestNode1 doesn't matter
mdp.activate_extensions(['__test1', '__test2'])
assert test_node._execute() == 1
mdp.deactivate_extensions(['__test2', '__test1'])
# now activate in inverse order
# TestNode2 already gets _execute from __test2, but that is still
# overriden by __test1, thats how its registered in _extensions
mdp.activate_extensions(['__test2', '__test1'])
assert test_node._execute() == 1
mdp.deactivate_extensions(['__test2', '__test1'])
## now the same with extension 3
mdp.activate_extension('__test3')
assert test_node._execute() == "3b"
mdp.deactivate_extension('__test3')
# __test3 does not override, since the _execute slot for Node2
# was first filled by __test1
mdp.activate_extensions(['__test3', '__test1'])
assert test_node._execute() == 1
mdp.deactivate_extensions(['__test3', '__test1'])
# inverse order
mdp.activate_extensions(['__test1', '__test3'])
assert test_node._execute() == 1
mdp.deactivate_extensions(['__test2', '__test1'])
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