test.rs

#[test]
fn test_undefined() {
    use encoding_rs::WINDOWS_874;
    let replacement = "�".as_bytes();
    let double_replacement = "��".as_bytes();
    let res = WINDOWS_874.decode(&[254]).0;
    assert_eq!(res.as_bytes(), replacement);
    let res = WINDOWS_874.decode(&[255]).0;
    assert_eq!(res.as_bytes(), replacement);
    let res = WINDOWS_874.decode(&[255, 255]).0;
    assert_eq!(res.as_bytes(), double_replacement);
    let res = WINDOWS_874.decode(&[254, 254]).0;
    assert_eq!(res.as_bytes(), double_replacement);
    let res = WINDOWS_874.decode(&[253, 255]).0;
    assert_eq!(res.as_bytes(), double_replacement);

    let res = WINDOWS_874.decode(&[254, 255]).0;
    // this should work, but `res` is empty
    assert_eq!(res.as_bytes(), double_replacement);
}