feat: add a histrical wit-bindgen

__wasm/wit-bindgen-sample/wit-bindgen/crates/gen-wasmtime-py/tests/codegen.rs

@@ -0,0 +1,51 @@
+use std::path::Path;
+use std::process::Command;
+
+mod exports {
+    test_helpers::codegen_py_export!(
+        "*.wit"
+
+        // TODO: implement async support
+        "!async-functions.wit"
+    );
+}
+
+mod imports {
+    test_helpers::codegen_py_import!(
+        "*.wit"
+
+        // TODO: implement async support
+        "!async-functions.wit"
+
+        // This uses buffers, which we don't support in imports just yet
+        // TODO: should support this
+        "!wasi-next.wit"
+        "!host.wit"
+    );
+}
+
+fn verify(dir: &str, _name: &str) {
+    let output = Command::new("mypy")
+        .arg(Path::new(dir).join("bindings.py"))
+        .arg("--config-file")
+        .arg("mypy.ini")
+        .output()
+        .expect("failed to run `mypy`; do you have it installed?");
+    if output.status.success() {
+        return;
+    }
+    panic!(
+        "mypy failed
+
+status: {status}
+
+stdout ---
+{stdout}
+
+stderr ---
+{stderr}",
+        status = output.status,
+        stdout = String::from_utf8_lossy(&output.stdout).replace("\n", "\n\t"),
+        stderr = String::from_utf8_lossy(&output.stderr).replace("\n", "\n\t"),
+    );
+}