feat: add a histrical wit-bindgen

__wasm/wit-bindgen-sample/wit-bindgen/crates/gen-rust-wasm/tests/codegen.rs

@@ -0,0 +1,32 @@
+#![allow(dead_code, type_alias_bounds)]
+
+#[test]
+fn ok() {}
+
+#[rustfmt::skip]
+mod imports {
+    test_helpers::codegen_rust_wasm_import!(
+        "*.wit"
+
+        // If you want to exclude a specific test you can include it here with
+        // gitignore glob syntax:
+        //
+        // "!wasm.wit"
+        // "!host.wit"
+        //
+        //
+        // Similarly you can also just remove the `*.wit` glob and list tests
+        // individually if you're debugging.
+    );
+}
+
+mod exports {
+    test_helpers::codegen_rust_wasm_export!(
+        "*.wit"
+
+        // TODO: these use push/pull buffer which isn't implemented in the test
+        // generator just yet
+        "!wasi-next.wit"
+        "!host.wit"
+    );
+}