991592c4ba
* Record original Trap from API callback. Fixes #645 * use TrapRegistry * comment about magic number
50 lines
1.5 KiB
Rust
50 lines
1.5 KiB
Rust
use std::rc::Rc;
|
|
use wasmtime::*;
|
|
use wat::parse_str;
|
|
|
|
#[test]
|
|
fn test_trap_return() -> Result<(), String> {
|
|
struct HelloCallback;
|
|
|
|
impl Callable for HelloCallback {
|
|
fn call(&self, _params: &[Val], _results: &mut [Val]) -> Result<(), HostRef<Trap>> {
|
|
Err(HostRef::new(Trap::new("test 123".into())))
|
|
}
|
|
}
|
|
|
|
let engine = HostRef::new(Engine::default());
|
|
let store = HostRef::new(Store::new(&engine));
|
|
let binary = parse_str(
|
|
r#"
|
|
(module
|
|
(func $hello (import "" "hello"))
|
|
(func (export "run") (call $hello))
|
|
)
|
|
"#,
|
|
)
|
|
.map_err(|e| format!("failed to parse WebAssembly text source: {}", e))?;
|
|
|
|
let module = HostRef::new(
|
|
Module::new(&store, &binary).map_err(|e| format!("failed to compile module: {}", e))?,
|
|
);
|
|
let hello_type = FuncType::new(Box::new([]), Box::new([]));
|
|
let hello_func = HostRef::new(Func::new(&store, hello_type, Rc::new(HelloCallback)));
|
|
|
|
let imports = vec![hello_func.into()];
|
|
let instance = Instance::new(&store, &module, imports.as_slice())
|
|
.map_err(|e| format!("failed to instantiate module: {}", e))?;
|
|
let run_func = instance.exports()[0]
|
|
.func()
|
|
.expect("expected function export");
|
|
|
|
let e = run_func
|
|
.borrow()
|
|
.call(&[])
|
|
.err()
|
|
.expect("error calling function");
|
|
|
|
assert_eq!(e.borrow().message(), "test 123");
|
|
|
|
Ok(())
|
|
}
|