rhai/tests/debugging.rs
2022-05-03 21:55:01 +08:00

78 lines
2.0 KiB
Rust

#![cfg(feature = "debugging")]
use rhai::{Dynamic, Engine, EvalAltResult, INT};
#[cfg(not(feature = "no_index"))]
use rhai::Array;
#[cfg(not(feature = "no_object"))]
use rhai::Map;
#[test]
fn test_debugging() -> Result<(), Box<EvalAltResult>> {
let mut engine = Engine::new();
engine.register_debugger(
|| Dynamic::UNIT,
|_, _, _, _, _| Ok(rhai::debugger::DebuggerCommand::Continue),
);
#[cfg(not(feature = "no_function"))]
#[cfg(not(feature = "no_index"))]
{
let r = engine.eval::<Array>(
"
fn foo(x) {
if x >= 5 {
back_trace()
} else {
foo(x+1)
}
}
foo(0)
",
)?;
assert_eq!(r.len(), 6);
assert_eq!(engine.eval::<INT>("len(back_trace())")?, 0);
}
Ok(())
}
#[test]
#[cfg(not(feature = "no_object"))]
fn test_debugger_state() -> Result<(), Box<EvalAltResult>> {
let mut engine = Engine::new();
engine.register_debugger(
|| {
// Say, use an object map for the debugger state
let mut state = Map::new();
// Initialize properties
state.insert("hello".into(), (42 as INT).into());
state.insert("foo".into(), false.into());
Dynamic::from_map(state)
},
|mut context, _, _, _, _| {
// Print debugger state - which is an object map
println!("Current state = {}", context.tag());
// Modify state
let mut state = context.tag_mut().write_lock::<Map>().unwrap();
let hello = state.get("hello").unwrap().as_int().unwrap();
state.insert("hello".into(), (hello + 1).into());
state.insert("foo".into(), true.into());
state.insert("something_new".into(), "hello, world!".into());
// Continue with debugging
Ok(rhai::debugger::DebuggerCommand::StepInto)
},
);
engine.run("let x = 42;")?;
Ok(())
}