extern crate libfuzzer_sys;

use diffutilslib::cmp::{self, Cmp};

use std::ffi::OsString;

use std::fs::{self, File};

use std::io::Write;

fn os(s: &str) -> OsString {

OsString::from(s)

fuzz_target!(|x: (Vec<u8>, Vec<u8>)| {

let args = vec!["cmp", "-l", "-b", "target/fuzz.cmp.a", "target/fuzz.cmp.b"]

.into_iter()

.map(|s| os(s))

.peekable();

let (from, to) = x;

fs::create_dir_all("target").unwrap();

File::create("target/fuzz.cmp.a")

.unwrap()

.write_all(&from)

.unwrap();

File::create("target/fuzz.cmp.b")

.unwrap()

.write_all(&to)

.unwrap();

let params =

cmp::parse_params(args).unwrap_or_else(|e| panic!("Failed to parse params: {}", e));

let ret = cmp::cmp(&params);

if from == to && !matches!(ret, Ok(Cmp::Equal)) {

panic!(

"target/fuzz.cmp.a and target/fuzz.cmp.b are equal, but cmp returned {:?}.",

ret

);

} else if from != to && !matches!(ret, Ok(Cmp::Different)) {

panic!(

"target/fuzz.cmp.a and target/fuzz.cmp.b are different, but cmp returned {:?}.",

ret

);

} else if ret.is_err() {

panic!(

"target/fuzz.cmp.a and target/fuzz.cmp.b caused cmp to error ({:?}).",

ret

);

}