420dcd76fd
* Don't require `Store` in `Instance` constructor This can be inferred from the `Module` argument. Additionally add a `store` accessor to an `Instance` in case it's needed to instantiate another `Module`. cc #708 * Update more constructors * Fix a doctest * Don't ignore store in `wasm_instance_new` * Run rustfmt
69 lines
1.7 KiB
Rust
69 lines
1.7 KiB
Rust
use std::rc::Rc;
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use wasmtime::*;
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#[test]
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fn same_import_names_still_distinct() -> anyhow::Result<()> {
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const WAT: &str = r#"
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(module
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(import "" "" (func $a (result i32)))
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(import "" "" (func $b (result f32)))
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(func (export "foo") (result i32)
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call $a
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call $b
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i32.trunc_f32_u
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i32.add)
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)
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"#;
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struct Ret1;
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impl Callable for Ret1 {
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fn call(&self, params: &[Val], results: &mut [Val]) -> Result<(), Trap> {
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assert!(params.is_empty());
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assert_eq!(results.len(), 1);
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results[0] = 1i32.into();
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Ok(())
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}
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}
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struct Ret2;
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impl Callable for Ret2 {
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fn call(&self, params: &[Val], results: &mut [Val]) -> Result<(), Trap> {
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assert!(params.is_empty());
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assert_eq!(results.len(), 1);
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results[0] = 2.0f32.into();
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Ok(())
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}
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}
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let store = Store::default();
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let wasm = wat::parse_str(WAT)?;
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let module = Module::new(&store, &wasm)?;
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let imports = [
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Func::new(
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&store,
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FuncType::new(Box::new([]), Box::new([ValType::I32])),
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Rc::new(Ret1),
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)
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.into(),
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Func::new(
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&store,
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FuncType::new(Box::new([]), Box::new([ValType::F32])),
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Rc::new(Ret2),
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)
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.into(),
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];
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let instance = Instance::new(&module, &imports)?;
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let func = instance.find_export_by_name("foo").unwrap().func().unwrap();
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let results = func.call(&[])?;
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assert_eq!(results.len(), 1);
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match results[0] {
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Val::I32(n) => assert_eq!(n, 3),
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_ => panic!("unexpected type of return"),
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}
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Ok(())
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}
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