84 lines
2.1 KiB
Rust
84 lines
2.1 KiB
Rust
#[test]
|
|
fn chunks() {
|
|
macro_rules! assert_chunks {
|
|
( $string:expr, $(($valid:expr, $invalid:expr)),* $(,)? ) => {{
|
|
let mut iter = $string.utf8_chunks();
|
|
$(
|
|
let chunk = iter.next().expect("missing chunk");
|
|
assert_eq!($valid, chunk.valid());
|
|
assert_eq!($invalid, chunk.invalid());
|
|
)*
|
|
assert_eq!(None, iter.next());
|
|
}};
|
|
}
|
|
|
|
assert_chunks!(b"hello", ("hello", b""));
|
|
assert_chunks!("ศไทย中华Việt Nam".as_bytes(), ("ศไทย中华Việt Nam", b""));
|
|
assert_chunks!(
|
|
b"Hello\xC2 There\xFF Goodbye",
|
|
("Hello", b"\xC2"),
|
|
(" There", b"\xFF"),
|
|
(" Goodbye", b""),
|
|
);
|
|
assert_chunks!(
|
|
b"Hello\xC0\x80 There\xE6\x83 Goodbye",
|
|
("Hello", b"\xC0"),
|
|
("", b"\x80"),
|
|
(" There", b"\xE6\x83"),
|
|
(" Goodbye", b""),
|
|
);
|
|
assert_chunks!(
|
|
b"\xF5foo\xF5\x80bar",
|
|
("", b"\xF5"),
|
|
("foo", b"\xF5"),
|
|
("", b"\x80"),
|
|
("bar", b""),
|
|
);
|
|
assert_chunks!(
|
|
b"\xF1foo\xF1\x80bar\xF1\x80\x80baz",
|
|
("", b"\xF1"),
|
|
("foo", b"\xF1\x80"),
|
|
("bar", b"\xF1\x80\x80"),
|
|
("baz", b""),
|
|
);
|
|
assert_chunks!(
|
|
b"\xF4foo\xF4\x80bar\xF4\xBFbaz",
|
|
("", b"\xF4"),
|
|
("foo", b"\xF4\x80"),
|
|
("bar", b"\xF4"),
|
|
("", b"\xBF"),
|
|
("baz", b""),
|
|
);
|
|
assert_chunks!(
|
|
b"\xF0\x80\x80\x80foo\xF0\x90\x80\x80bar",
|
|
("", b"\xF0"),
|
|
("", b"\x80"),
|
|
("", b"\x80"),
|
|
("", b"\x80"),
|
|
("foo\u{10000}bar", b""),
|
|
);
|
|
|
|
// surrogates
|
|
assert_chunks!(
|
|
b"\xED\xA0\x80foo\xED\xBF\xBFbar",
|
|
("", b"\xED"),
|
|
("", b"\xA0"),
|
|
("", b"\x80"),
|
|
("foo", b"\xED"),
|
|
("", b"\xBF"),
|
|
("", b"\xBF"),
|
|
("bar", b""),
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn debug() {
|
|
assert_eq!(
|
|
"\"Hello\\xC0\\x80 There\\xE6\\x83 Goodbye\\u{10d4ea}\"",
|
|
&format!(
|
|
"{:?}",
|
|
b"Hello\xC0\x80 There\xE6\x83 Goodbye\xf4\x8d\x93\xaa".utf8_chunks().debug(),
|
|
),
|
|
);
|
|
}
|