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use mlua::{Function, Lua, Result, String};
#[test]
fn test_function() -> Result<()> {
let lua = Lua::new();
let globals = lua.globals();
lua.load(
r#"
function concat(arg1, arg2)
return arg1 .. arg2
end
"#,
)
.exec()?;
let concat = globals.get::<_, Function>("concat")?;
assert_eq!(concat.call::<_, String>(("foo", "bar"))?, "foobar");
Ok(())
}
#[test]
fn test_bind() -> Result<()> {
let lua = Lua::new();
let globals = lua.globals();
lua.load(
r#"
function concat(...)
local res = ""
for _, s in pairs({...}) do
res = res..s
end
return res
end
"#,
)
.exec()?;
let mut concat = globals.get::<_, Function>("concat")?;
concat = concat.bind("foo")?;
concat = concat.bind("bar")?;
concat = concat.bind(("baz", "baf"))?;
assert_eq!(
concat.call::<_, String>(("hi", "wut"))?,
"foobarbazbafhiwut"
);
Ok(())
}
#[test]
fn test_rust_function() -> Result<()> {
let lua = Lua::new();
let globals = lua.globals();
lua.load(
r#"
function lua_function()
return rust_function()
end
-- Test to make sure chunk return is ignored
return 1
"#,
)
.exec()?;
let lua_function = globals.get::<_, Function>("lua_function")?;
let rust_function = lua.create_function(|_, ()| Ok("hello"))?;
globals.set("rust_function", rust_function)?;
assert_eq!(lua_function.call::<_, String>(())?, "hello");
Ok(())
}
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