cmd = "test.sh $INPUT_FILE $OUTPUT_FILE";
        params.clear();
        list = extractor.parseCommand(cmd, params);
        assertEquals(3, list.size());
        assertEquals("test.sh", list.get(0));
        assertEquals("$INPUT_FILE", list.get(1));
        assertEquals("$OUTPUT_FILE", list.get(2));

        cmd = " test.sh $INPUT_FILE $OUTPUT_FILE ";
        params.clear();