Function test

pub fn test(
    arg1: &str,
    arg2: &str,
    arg3: &str,
    arg4: &str,
) -> Result<(), Box<dyn Error>>

• The test() function
• arg1: the format, e.g. “pcm”
• arg2: the input file to parse and decode, tests the decoder for the input file.
• arg3: the output file to encode, test the encoder.
• arg4: re-decode arg3 and encode to pcm to test the decoder.