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  • Committer: Martin von Gagern
  • Date: 2010-04-20 08:47:38 UTC
  • mfrom: (5167 +trunk)
  • mto: This revision was merged to the branch mainline in revision 5195.
  • Revision ID: martin.vgagern@gmx.net-20100420084738-ygymnqmdllzrhpfn
merge trunk

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bzrlib/tests/test_lazy_import.py
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""Test the lazy_import functionality."""
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    def test_object(self):
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        """ScopeReplacer can create an instance in local scope.
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        An object should appear in globals() by constructing a ScopeReplacer,
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        and it will be replaced with the real object upon the first request.
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        """
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                         object.__getattribute__(test_obj2, '__class__'))
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        self.assertEqual(InstrumentedReplacer,
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                         object.__getattribute__(test_obj3, '__class__'))
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        # The first use of the alternate variable causes test_obj2 to
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        # be replaced.
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        self.assertEqual('foo', test_obj3.foo(1))
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        # because only now are we able to detect the problem.
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        self.assertRaises(errors.IllegalUseOfScopeReplacer,
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                          getattr, test_obj3, 'foo')
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        self.assertEqual([('__getattribute__', 'foo'),
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                          '_replace',
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                          'factory',
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        self.actions = []
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        InstrumentedImportReplacer.use_actions(self.actions)
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        sys.path.append(base_path)
 
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        self.addCleanup(sys.path.remove, base_path)
 
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        original_import = __import__
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        def instrumented_import(mod, scope1, scope2, fromlist):
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            self.actions.append(('import', mod, fromlist))
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            return original_import(mod, scope1, scope2, fromlist)
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        def cleanup():
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            if base_path in sys.path:
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                sys.path.remove(base_path)
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            __builtins__['__import__'] = original_import
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        self.addCleanup(cleanup)
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        sys.path.append(base_path)
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        __builtins__['__import__'] = instrumented_import
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    def create_modules(self):