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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(())
}
#[test]
fn test_c_function() -> Result<()> {
let lua = Lua::new();
unsafe extern "C" fn c_function(state: *mut mlua::lua_State) -> std::os::raw::c_int {
let lua = Lua::init_from_ptr(state);
lua.globals().set("c_function", true).unwrap();
0
}
let func = unsafe { lua.create_c_function(c_function)? };
func.call(())?;
assert_eq!(lua.globals().get::<_, bool>("c_function")?, true);
Ok(())
}
#[test]
fn test_dump() -> Result<()> {
let lua = unsafe { Lua::unsafe_new() };
let concat_lua = lua
.load(r#"function(arg1, arg2) return arg1 .. arg2 end"#)
.eval::<Function>()?;
let concat = lua.load(&concat_lua.dump(false)).into_function()?;
assert_eq!(concat.call::<_, String>(("foo", "bar"))?, "foobar");
Ok(())
}
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