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+# copyright 2003-2015 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
+#
+# This file is part of astroid.
+#
+# astroid is free software: you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by the
+# Free Software Foundation, either version 2.1 of the License, or (at your
+# option) any later version.
+#
+# astroid is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+# for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License along
+# with astroid. If not, see <http://www.gnu.org/licenses/>.
+
+"""Hooks for nose library."""
+
+import re
+import textwrap
+
+import astroid
+import astroid.builder
+
+_BUILDER = astroid.builder.AstroidBuilder(astroid.MANAGER)
+
+
+def _pep8(name, caps=re.compile('([A-Z])')):
+ return caps.sub(lambda m: '_' + m.groups()[0].lower(), name)
+
+
+def _nose_tools_functions():
+ """Get an iterator of names and bound methods."""
+ module = _BUILDER.string_build(textwrap.dedent('''
+ import unittest
+
+ class Test(unittest.TestCase):
+ pass
+ a = Test()
+ '''))
+ try:
+ case = next(module['a'].infer())
+ except astroid.InferenceError:
+ return
+ for method in case.methods():
+ if method.name.startswith('assert') and '_' not in method.name:
+ pep8_name = _pep8(method.name)
+ yield pep8_name, astroid.BoundMethod(method, case)
+ if method.name == 'assertEqual':
+ # nose also exports assert_equals.
+ yield 'assert_equals', astroid.BoundMethod(method, case)
+
+
+def _nose_tools_transform(node):
+ for method_name, method in _nose_tools_functions():
+ node.locals[method_name] = [method]
+
+
+def _nose_tools_trivial_transform():
+ """Custom transform for the nose.tools module."""
+ stub = _BUILDER.string_build('''__all__ = []''')
+ all_entries = ['ok_', 'eq_']
+
+ for pep8_name, method in _nose_tools_functions():
+ all_entries.append(pep8_name)
+ stub[pep8_name] = method
+
+ # Update the __all__ variable, since nose.tools
+ # does this manually with .append.
+ all_assign = stub['__all__'].parent
+ all_object = astroid.List(all_entries)
+ all_object.parent = all_assign
+ all_assign.value = all_object
+ return stub
+
+
+astroid.register_module_extender(astroid.MANAGER, 'nose.tools.trivial',
+ _nose_tools_trivial_transform)
+astroid.MANAGER.register_transform(astroid.Module, _nose_tools_transform,
+ lambda n: n.name == 'nose.tools')