feat: add a histrical wit-bindgen

__wasm/wit-bindgen-sample/wit-bindgen/tests/runtime/smoke/host.rs

@@ -0,0 +1,33 @@
+use anyhow::Result;
+
+wit_bindgen_wasmtime::export!("../../tests/runtime/smoke/imports.wit");
+
+#[derive(Default)]
+pub struct MyImports {
+    hit: bool,
+}
+
+impl imports::Imports for MyImports {
+    fn thunk(&mut self) {
+        self.hit = true;
+        println!("in the host");
+    }
+}
+
+wit_bindgen_wasmtime::import!("../../tests/runtime/smoke/exports.wit");
+
+fn run(wasm: &str) -> Result<()> {
+    let (exports, mut store) = crate::instantiate(
+        wasm,
+        |linker| imports::add_to_linker(linker, |cx| -> &mut MyImports { &mut cx.imports }),
+        |store, module, linker| {
+            exports::Exports::instantiate(store, module, linker, |cx| &mut cx.exports)
+        },
+    )?;
+
+    exports.thunk(&mut store)?;
+
+    assert!(store.data().imports.hit);
+
+    Ok(())
+}