431 lines
11 KiB
Rust
431 lines
11 KiB
Rust
#![cfg(feature = "async")]
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#![cfg_attr(
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all(feature = "luajit", target_os = "macos", target_arch = "x86_64"),
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feature(link_args)
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)]
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#[cfg_attr(
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all(feature = "luajit", target_os = "macos", target_arch = "x86_64"),
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link_args = "-pagezero_size 10000 -image_base 100000000",
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allow(unused_attributes)
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)]
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extern "system" {}
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use std::cell::Cell;
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use std::rc::Rc;
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use std::sync::{
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atomic::{AtomicI64, Ordering},
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Arc,
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};
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use std::time::Duration;
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use futures_timer::Delay;
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use futures_util::stream::TryStreamExt;
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use mlua::{
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Error, Function, Lua, Result, Table, TableExt, Thread, UserData, UserDataMethods, Value,
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};
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#[tokio::test]
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async fn test_async_function() -> Result<()> {
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let lua = Lua::new();
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let f = lua
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.create_async_function(|_lua, (a, b, c): (i64, i64, i64)| async move { Ok((a + b) * c) })?;
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lua.globals().set("f", f)?;
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let res: i64 = lua.load("f(1, 2, 3)").eval_async().await?;
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assert_eq!(res, 9);
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Ok(())
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}
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#[tokio::test]
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async fn test_async_sleep() -> Result<()> {
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let lua = Lua::new();
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let sleep = lua.create_async_function(move |_lua, n: u64| async move {
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Delay::new(Duration::from_millis(n)).await;
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Ok(format!("elapsed:{}ms", n))
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})?;
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lua.globals().set("sleep", sleep)?;
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let res: String = lua.load(r"return sleep(...)").call_async(100).await?;
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assert_eq!(res, "elapsed:100ms");
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Ok(())
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}
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#[tokio::test]
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async fn test_async_call() -> Result<()> {
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let lua = Lua::new();
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let hello = lua.create_async_function(|_lua, name: String| async move {
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Delay::new(Duration::from_millis(10)).await;
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Ok(format!("hello, {}!", name))
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})?;
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match hello.call::<_, ()>("alex") {
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Err(Error::RuntimeError(_)) => {}
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_ => panic!(
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"non-async executing async function must fail on the yield stage with RuntimeError"
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),
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};
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assert_eq!(hello.call_async::<_, String>("alex").await?, "hello, alex!");
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// Executing non-async functions using async call is allowed
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let sum = lua.create_function(|_lua, (a, b): (i64, i64)| return Ok(a + b))?;
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assert_eq!(sum.call_async::<_, i64>((5, 1)).await?, 6);
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Ok(())
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}
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#[tokio::test]
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async fn test_async_bind_call() -> Result<()> {
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let lua = Lua::new();
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let sum = lua.create_async_function(|_lua, (a, b): (i64, i64)| async move { Ok(a + b) })?;
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let plus_10 = sum.bind(10)?;
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lua.globals().set("plus_10", plus_10)?;
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assert_eq!(lua.load("plus_10(-1)").eval_async::<i64>().await?, 9);
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assert_eq!(lua.load("plus_10(1)").eval_async::<i64>().await?, 11);
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Ok(())
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}
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#[tokio::test]
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async fn test_async_handle_yield() -> Result<()> {
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let lua = Lua::new();
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let sum = lua.create_async_function(|_lua, (a, b): (i64, i64)| async move {
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Delay::new(Duration::from_millis(10)).await;
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Ok(a + b)
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})?;
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lua.globals().set("sleep_sum", sum)?;
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let res: String = lua
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.load(
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r#"
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sum = sleep_sum(6, 7)
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assert(sum == 13)
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coroutine.yield("in progress")
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return "done"
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"#,
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)
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.call_async(())
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.await?;
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assert_eq!(res, "done");
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let min = lua
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.load(
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r#"
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function (a, b)
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coroutine.yield("ignore me")
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if a < b then return a else return b end
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end
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"#,
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)
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.eval::<Function>()?;
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assert_eq!(min.call_async::<_, i64>((-1, 1)).await?, -1);
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Ok(())
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}
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#[tokio::test]
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async fn test_async_return_async_closure() -> Result<()> {
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let lua = Lua::new();
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let f = lua.create_async_function(|lua, a: i64| async move {
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Delay::new(Duration::from_millis(10)).await;
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let g = lua.create_async_function(move |_, b: i64| async move {
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Delay::new(Duration::from_millis(10)).await;
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return Ok(a + b);
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})?;
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Ok(g)
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})?;
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lua.globals().set("f", f)?;
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let res: i64 = lua
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.load("local g = f(1); return g(2) + g(3)")
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.call_async(())
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.await?;
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assert_eq!(res, 7);
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Ok(())
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}
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#[tokio::test]
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async fn test_async_thread_stream() -> Result<()> {
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let lua = Lua::new();
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let thread = lua.create_thread(
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lua.load(
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r#"
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function (sum)
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for i = 1,10 do
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sum = sum + i
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coroutine.yield(sum)
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end
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return sum
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end
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"#,
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)
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.eval()?,
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)?;
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let mut stream = thread.into_async::<_, i64>(1);
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let mut sum = 0;
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while let Some(n) = stream.try_next().await? {
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sum += n;
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}
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assert_eq!(sum, 286);
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Ok(())
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}
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#[tokio::test]
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async fn test_async_thread() -> Result<()> {
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let lua = Lua::new();
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let cnt = Arc::new(10); // sleep 10ms
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let cnt2 = cnt.clone();
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let f = lua.create_async_function(move |_lua, ()| {
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let cnt3 = cnt2.clone();
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async move {
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Delay::new(Duration::from_millis(*cnt3.as_ref())).await;
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Ok("done")
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}
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})?;
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let res: String = lua.create_thread(f)?.into_async(()).await?;
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assert_eq!(res, "done");
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assert_eq!(Arc::strong_count(&cnt), 2);
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lua.gc_collect()?; // thread_s is non-resumable and subject to garbage collection
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assert_eq!(Arc::strong_count(&cnt), 1);
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Ok(())
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}
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#[tokio::test]
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async fn test_async_table() -> Result<()> {
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let lua = Lua::new();
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let table = lua.create_table()?;
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table.set("val", 10)?;
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let get_value = lua.create_async_function(|_, table: Table| async move {
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Delay::new(Duration::from_millis(10)).await;
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table.get::<_, i64>("val")
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})?;
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table.set("get_value", get_value)?;
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let set_value = lua.create_async_function(|_, (table, n): (Table, i64)| async move {
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Delay::new(Duration::from_millis(10)).await;
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table.set("val", n)
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})?;
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table.set("set_value", set_value)?;
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let sleep = lua.create_async_function(|_, n| async move {
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Delay::new(Duration::from_millis(n)).await;
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Ok(format!("elapsed:{}ms", n))
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})?;
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table.set("sleep", sleep)?;
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assert_eq!(
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table
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.call_async_method::<_, _, i64>("get_value", ())
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.await?,
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10
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);
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table.call_async_method("set_value", 15).await?;
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assert_eq!(
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table
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.call_async_method::<_, _, i64>("get_value", ())
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.await?,
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15
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);
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assert_eq!(
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table
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.call_async_function::<_, _, String>("sleep", 7)
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.await?,
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"elapsed:7ms"
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);
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Ok(())
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}
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#[tokio::test]
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async fn test_async_userdata() -> Result<()> {
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#[derive(Clone)]
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struct MyUserData(Arc<AtomicI64>);
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impl UserData for MyUserData {
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fn add_methods<'lua, M: UserDataMethods<'lua, Self>>(methods: &mut M) {
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methods.add_async_method("get_value", |_, data, ()| async move {
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Delay::new(Duration::from_millis(10)).await;
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Ok(data.0.load(Ordering::Relaxed))
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});
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methods.add_async_method("set_value", |_, data, n| async move {
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Delay::new(Duration::from_millis(10)).await;
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data.0.store(n, Ordering::Relaxed);
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Ok(())
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});
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methods.add_async_function("sleep", |_, n| async move {
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Delay::new(Duration::from_millis(n)).await;
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Ok(format!("elapsed:{}ms", n))
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});
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}
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}
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let lua = Lua::new();
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let globals = lua.globals();
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let userdata = lua.create_userdata(MyUserData(Arc::new(AtomicI64::new(11))))?;
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globals.set("userdata", userdata.clone())?;
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lua.load(
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r#"
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assert(userdata:get_value() == 11)
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userdata:set_value(12)
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assert(userdata.sleep(5) == "elapsed:5ms")
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assert(userdata:get_value() == 12)
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"#,
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)
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.exec_async()
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.await?;
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Ok(())
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}
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#[tokio::test]
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async fn test_async_scope() -> Result<()> {
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let ref lua = Lua::new();
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let ref rc = Rc::new(Cell::new(0));
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let fut = lua.async_scope(|scope| async move {
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let f = scope.create_async_function(move |_, n: u64| {
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let rc2 = rc.clone();
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async move {
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rc2.set(42);
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Delay::new(Duration::from_millis(n)).await;
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assert_eq!(Rc::strong_count(&rc2), 2);
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Ok(())
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}
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})?;
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lua.globals().set("f", f.clone())?;
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assert_eq!(Rc::strong_count(rc), 1);
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let _ = f.call_async::<u64, ()>(10).await?;
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assert_eq!(Rc::strong_count(rc), 1);
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// Create future in partialy polled state (Poll::Pending)
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let g = lua.create_thread(f)?;
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g.resume::<u64, ()>(10)?;
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lua.globals().set("g", g)?;
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assert_eq!(Rc::strong_count(rc), 2);
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Ok(())
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});
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assert_eq!(Rc::strong_count(rc), 1);
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let _ = fut.await?;
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assert_eq!(Rc::strong_count(rc), 1);
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match lua
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.globals()
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.get::<_, Function>("f")?
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.call_async::<_, ()>(10)
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.await
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{
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Err(Error::CallbackError { ref cause, .. }) => match cause.as_ref() {
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Error::CallbackDestructed => {}
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e => panic!("expected `CallbackDestructed` error cause, got {:?}", e),
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},
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r => panic!("improper return for destructed function: {:?}", r),
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};
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match lua.globals().get::<_, Thread>("g")?.resume::<_, Value>(()) {
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Err(Error::CallbackError { ref cause, .. }) => match cause.as_ref() {
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Error::CallbackDestructed => {}
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e => panic!("expected `CallbackDestructed` error cause, got {:?}", e),
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},
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r => panic!("improper return for destructed function: {:?}", r),
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};
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Ok(())
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}
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#[tokio::test]
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async fn test_async_scope_userdata() -> Result<()> {
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#[derive(Clone)]
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struct MyUserData(Arc<AtomicI64>);
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impl UserData for MyUserData {
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fn add_methods<'lua, M: UserDataMethods<'lua, Self>>(methods: &mut M) {
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methods.add_async_method("get_value", |_, data, ()| async move {
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Delay::new(Duration::from_millis(10)).await;
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Ok(data.0.load(Ordering::Relaxed))
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});
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methods.add_async_method("set_value", |_, data, n| async move {
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Delay::new(Duration::from_millis(10)).await;
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data.0.store(n, Ordering::Relaxed);
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Ok(())
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});
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methods.add_async_function("sleep", |_, n| async move {
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Delay::new(Duration::from_millis(n)).await;
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Ok(format!("elapsed:{}ms", n))
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});
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}
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}
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let ref lua = Lua::new();
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let ref arc = Arc::new(AtomicI64::new(11));
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lua.async_scope(|scope| async move {
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let ud = scope.create_userdata(MyUserData(arc.clone()))?;
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lua.globals().set("userdata", ud)?;
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lua.load(
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r#"
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assert(userdata:get_value() == 11)
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userdata:set_value(12)
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assert(userdata.sleep(5) == "elapsed:5ms")
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assert(userdata:get_value() == 12)
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"#,
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)
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.exec_async()
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.await
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})
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.await?;
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assert_eq!(Arc::strong_count(arc), 1);
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match lua.load("userdata:get_value()").exec_async().await {
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Err(Error::CallbackError { ref cause, .. }) => match cause.as_ref() {
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Error::CallbackDestructed => {}
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e => panic!("expected `CallbackDestructed` error cause, got {:?}", e),
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},
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r => panic!("improper return for destructed userdata: {:?}", r),
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};
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Ok(())
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}
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