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use std::borrow::Cow;
use mlua::{Lua, Result, String};
#[test]
fn compare() {
fn with_str<F: FnOnce(String)>(s: &str, f: F) {
f(Lua::new().create_string(s).unwrap());
}
// Tests that all comparisons we want to have are usable
with_str("teststring", |t| assert_eq!(t, "teststring")); // &str
with_str("teststring", |t| assert_eq!(t, b"teststring")); // &[u8]
with_str("teststring", |t| assert_eq!(t, b"teststring".to_vec())); // Vec<u8>
with_str("teststring", |t| assert_eq!(t, "teststring".to_string())); // String
with_str("teststring", |t| assert_eq!(t, t)); // mlua::String
with_str("teststring", |t| {
assert_eq!(t, Cow::from(b"teststring".as_ref()))
}); // Cow (borrowed)
with_str("bla", |t| assert_eq!(t, Cow::from(b"bla".to_vec()))); // Cow (owned)
}
#[test]
fn string_views() -> Result<()> {
let lua = Lua::new();
lua.load(
r#"
ok = "null bytes are valid utf-8, wh\0 knew?"
err = "but \255 isn't :("
empty = ""
"#,
)
.exec()?;
let globals = lua.globals();
let ok: String = globals.get("ok")?;
let err: String = globals.get("err")?;
let empty: String = globals.get("empty")?;
assert_eq!(ok.to_str()?, "null bytes are valid utf-8, wh\0 knew?");
assert_eq!(
ok.as_bytes(),
&b"null bytes are valid utf-8, wh\0 knew?"[..]
);
assert!(err.to_str().is_err());
assert_eq!(err.as_bytes(), &b"but \xff isn't :("[..]);
assert_eq!(empty.to_str()?, "");
assert_eq!(empty.as_bytes_with_nul(), &[0]);
assert_eq!(empty.as_bytes(), &[]);
Ok(())
}
#[test]
fn raw_string() -> Result<()> {
let lua = Lua::new();
let rs = lua.create_string(&[0, 1, 2, 3, 0, 1, 2, 3])?;
assert_eq!(rs.as_bytes(), &[0, 1, 2, 3, 0, 1, 2, 3]);
Ok(())
}
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