private void testEncoding(String[] encodings, List<String> supports,
			List<String> notSupports) {

		byte[] bytes = data.getFileContent();

		for (String encoding : encodings) {
			if (ExtEncodingUtil.isRightEncoding(bytes, encoding)) {
				supports.add(encoding);
			} else {
				notSupports.add(encoding);
			}

		}
	}