def test3(self):
        """ Test if origin of link_or_copy'ed file is deleteable. """
        import tempfile
        import os
        (fd1, name1) = tempfile.mkstemp()
        os.close(fd1)
        (fd2, name2) = tempfile.mkstemp()
        os.close(fd2)
        os.unlink(name2)
        link_or_copy(name1, name2)
        try:
            os.unlink(name1)
        except __HOLE__:
            self.fail("Should not throw")
        os.unlink(name2)
dataset/ETHPy150Open VisTrails/VisTrails/vistrails/core/system/linux.py/TestLinux.test3