'If L{FilePath.temporarySibling} is given an extension argument, it will
produce path objects with that extension appended to their names.'

def test_temporarySiblingExtension(self):

    testExtension = '.test-extension'
    ts = self.path.temporarySibling(testExtension)
    self.assertTrue(ts.basename().endswith(testExtension), ('%s    does    not    end    with    %s' % (ts.basename(), testExtension)))
