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use base64_simd::{AsOut, Base64};
use base64_simd::{STANDARD, STANDARD_NO_PAD, URL_SAFE, URL_SAFE_NO_PAD};
fn rand_bytes(n: usize) -> Vec<u8> {
use rand::RngCore;
let mut bytes = vec![0u8; n];
rand::thread_rng().fill_bytes(&mut bytes);
bytes
}
#[cfg(miri)]
use std::io::Write as _;
macro_rules! dbgmsg {
($($fmt:tt)*) => {
// println!($($fmt)*);
// #[cfg(miri)]
// std::io::stdout().flush().unwrap();
};
}
#[cfg_attr(not(target_arch = "wasm32"), test)]
#[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
fn basic() {
let cases: &[(Base64, &str, &str)] = &[
(STANDARD, "", ""),
(STANDARD, "f", "Zg=="),
(STANDARD, "fo", "Zm8="),
(STANDARD, "foo", "Zm9v"),
(STANDARD, "foob", "Zm9vYg=="),
(STANDARD, "fooba", "Zm9vYmE="),
(STANDARD, "foobar", "Zm9vYmFy"),
];
let mut buf: Vec<u8> = Vec::new();
for &(ref base64, input, output) in cases {
buf.clear();
buf.resize(base64.encoded_length(input.len()), 0);
let ans = base64.encode_as_str(input.as_bytes(), buf.as_out());
assert_eq!(ans, output);
buf.clear();
buf.resize(base64.decoded_length(output.as_bytes()).unwrap(), 0);
let ans = base64.decode(output.as_bytes(), buf.as_out()).unwrap();
assert_eq!(ans, input.as_bytes());
}
}
#[cfg(feature = "alloc")]
#[cfg_attr(not(target_arch = "wasm32"), test)]
#[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
fn allocation() {
let src = "helloworld";
let prefix = "data:;base64,";
let mut encode_buf = prefix.to_owned();
STANDARD.encode_append(src, &mut encode_buf);
assert_eq!(encode_buf, format!("{prefix}aGVsbG93b3JsZA=="));
let mut decode_buf = b"123".to_vec();
let src = &encode_buf[prefix.len()..];
STANDARD.decode_append(src, &mut decode_buf).unwrap();
assert_eq!(decode_buf, b"123helloworld");
}
#[cfg_attr(not(target_arch = "wasm32"), test)]
#[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
fn random() {
dbgmsg!();
for n in 0..128 {
dbgmsg!("n = {}", n);
let bytes = rand_bytes(n);
let test_config = [
STANDARD, //
URL_SAFE, //
STANDARD_NO_PAD, //
URL_SAFE_NO_PAD, //
];
let base_config = {
use base64::alphabet::*;
use base64::engine::fast_portable::{FastPortable, NO_PAD, PAD};
let f = FastPortable::from;
[
f(&STANDARD, PAD),
f(&URL_SAFE, PAD),
f(&STANDARD, NO_PAD),
f(&URL_SAFE, NO_PAD),
]
};
for (base64, config) in test_config.into_iter().zip(base_config.into_iter()) {
dbgmsg!("base64 = {:?}", base64);
let encoded = base64::encode_engine(&bytes, &config);
let encoded = encoded.as_bytes();
assert!(base64.check(encoded).is_ok());
{
let mut buf = vec![0u8; base64.encoded_length(n)];
let ans = base64.encode(&bytes, buf.as_out());
assert_eq!(ans, encoded);
assert!(base64.check(ans).is_ok());
dbgmsg!("encoding ... ok");
}
{
let mut buf = encoded.to_owned();
let ans = base64.decode_inplace(&mut buf).unwrap();
assert_eq!(ans, bytes);
dbgmsg!("decoding inplace ... ok");
}
{
let mut buf = vec![0u8; n];
let ans = base64.decode(encoded, buf.as_out()).unwrap();
assert_eq!(ans, bytes);
dbgmsg!("decoding ... ok");
}
}
}
}
/// <https://eprint.iacr.org/2022/361>
#[cfg_attr(not(target_arch = "wasm32"), test)]
#[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
fn canonicity() {
let test_vectors = [
("SGVsbG8=", Some("Hello")),
("SGVsbG9=", None),
("SGVsbG9", None),
("SGVsbA==", Some("Hell")),
("SGVsbA=", None),
("SGVsbA", None),
("SGVsbA====", None),
];
let mut buf = [0u8; 64];
for (encoded, expected) in test_vectors {
let base64 = STANDARD;
let is_valid = base64.check(encoded.as_bytes()).is_ok();
let result: _ = base64.decode(encoded.as_bytes(), buf.as_mut_slice().as_out());
assert_eq!(is_valid, result.is_ok());
match expected {
Some(expected) => assert_eq!(result.unwrap(), expected.as_bytes()),
None => assert!(result.is_err()),
}
}
}
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