105 lines
2.6 KiB
Rust
105 lines
2.6 KiB
Rust
use std::sync::Arc;
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use mlua::{GCMode, Lua, Result, UserData};
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#[cfg(any(feature = "lua54", feature = "lua53", feature = "lua52"))]
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use mlua::Error;
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#[cfg(any(feature = "lua54", feature = "lua53", feature = "lua52"))]
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#[test]
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fn test_memory_limit() -> Result<()> {
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let lua = Lua::new();
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let initial_memory = lua.used_memory();
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assert!(
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initial_memory > 0,
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"used_memory reporting is wrong, lua uses memory for stdlib"
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);
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let f = lua
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.load("local t = {}; for i = 1,10000 do t[i] = i end")
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.into_function()?;
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f.call::<_, ()>(()).expect("should trigger no memory limit");
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lua.set_memory_limit(initial_memory + 10000)?;
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match f.call::<_, ()>(()) {
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Err(Error::MemoryError(_)) => {}
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something_else => panic!("did not trigger memory error: {:?}", something_else),
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};
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lua.set_memory_limit(0)?;
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f.call::<_, ()>(()).expect("should trigger no memory limit");
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Ok(())
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}
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#[test]
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fn test_gc_control() -> Result<()> {
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let lua = Lua::new();
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let globals = lua.globals();
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#[cfg(feature = "lua54")]
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{
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assert_eq!(lua.gc_gen(0, 0), GCMode::Incremental);
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assert_eq!(lua.gc_inc(0, 0, 0), GCMode::Generational);
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}
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#[cfg(any(
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feature = "lua54",
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feature = "lua53",
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feature = "lua52",
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feature = "luau"
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))]
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{
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assert!(lua.gc_is_running());
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lua.gc_stop();
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assert!(!lua.gc_is_running());
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lua.gc_restart();
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assert!(lua.gc_is_running());
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}
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assert_eq!(lua.gc_inc(200, 100, 13), GCMode::Incremental);
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struct MyUserdata(Arc<()>);
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impl UserData for MyUserdata {}
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let rc = Arc::new(());
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globals.set("userdata", lua.create_userdata(MyUserdata(rc.clone()))?)?;
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globals.raw_remove("userdata")?;
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assert_eq!(Arc::strong_count(&rc), 2);
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lua.gc_collect()?;
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lua.gc_collect()?;
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assert_eq!(Arc::strong_count(&rc), 1);
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Ok(())
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}
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#[cfg(any(feature = "lua53", feature = "lua52"))]
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#[test]
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fn test_gc_error() {
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use mlua::Error;
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let lua = Lua::new();
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match lua
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.load(
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r#"
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val = nil
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table = {}
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setmetatable(table, {
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__gc = function()
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error("gcwascalled")
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end
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})
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table = nil
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collectgarbage("collect")
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"#,
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)
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.exec()
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{
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Err(Error::GarbageCollectorError(_)) => {}
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Err(e) => panic!("__gc error did not result in correct error, instead: {}", e),
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Ok(()) => panic!("__gc error did not result in error"),
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}
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}
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