1 files changed, 85 insertions, 0 deletions
diff --git a/tests/napi/src/make_callback.rs b/tests/napi/src/make_callback.rs
new file mode 100644
index 000000000..945df3452
--- /dev/null
+++ b/tests/napi/src/make_callback.rs
@@ -0,0 +1,85 @@
+// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
+
+use crate::assert_napi_ok;
+use crate::cstr;
+use napi_sys::ValueType::napi_function;
+use napi_sys::*;
+use std::ptr;
+
+extern "C" fn make_callback(
+  env: napi_env,
+  info: napi_callback_info,
+) -> napi_value {
+  const MAX_ARGUMENTS: usize = 10;
+  const RESERVED_ARGUMENTS: usize = 3;
+
+  let mut args = [std::ptr::null_mut(); MAX_ARGUMENTS];
+  let mut argc = MAX_ARGUMENTS;
+  assert_napi_ok!(napi_get_cb_info(
+    env,
+    info,
+    &mut argc,
+    args.as_mut_ptr(),
+    ptr::null_mut(),
+    ptr::null_mut(),
+  ));
+
+  assert!(argc > 0);
+  let resource = args[0];
+  let recv = args[1];
+  let func = args[2];
+
+  let mut argv: Vec<napi_value> = Vec::new();
+  argv.resize(MAX_ARGUMENTS - RESERVED_ARGUMENTS, ptr::null_mut());
+  for i in RESERVED_ARGUMENTS..argc {
+    argv[i - RESERVED_ARGUMENTS] = args[i];
+  }
+
+  let mut func_type: napi_valuetype = -1;
+  assert_napi_ok!(napi_typeof(env, func, &mut func_type));
+
+  let mut resource_name = ptr::null_mut();
+  assert_napi_ok!(napi_create_string_utf8(
+    env,
+    cstr!("test"),
+    usize::MAX,
+    &mut resource_name
+  ));
+
+  let mut context: napi_async_context = ptr::null_mut();
+  assert_napi_ok!(napi_async_init(env, resource, resource_name, &mut context));
+
+  let mut result = ptr::null_mut();
+  assert_eq!(func_type, napi_function);
+  assert_napi_ok!(napi_make_callback(
+    env,
+    context,
+    recv,
+    func,
+    argc - RESERVED_ARGUMENTS,
+    argv.as_mut_ptr(),
+    &mut result
+  ));
+
+  assert_napi_ok!(napi_async_destroy(env, context));
+  result
+}
+
+pub fn init(env: napi_env, exports: napi_value) {
+  let mut fn_: napi_value = ptr::null_mut();
+
+  assert_napi_ok!(napi_create_function(
+    env,
+    ptr::null_mut(),
+    usize::MAX,
+    Some(make_callback),
+    ptr::null_mut(),
+    &mut fn_,
+  ));
+  assert_napi_ok!(napi_set_named_property(
+    env,
+    exports,
+    cstr!("makeCallback"),
+    fn_
+  ));
+}