1 files changed, 113 insertions, 0 deletions
diff --git a/test_napi/src/callback.rs b/test_napi/src/callback.rs
new file mode 100644
index 000000000..bf6062913
--- /dev/null
+++ b/test_napi/src/callback.rs
@@ -0,0 +1,113 @@
+// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
+
+use napi_sys::Status::napi_ok;
+use napi_sys::ValueType::napi_function;
+use napi_sys::ValueType::napi_object;
+use napi_sys::*;
+use std::ptr;
+
+/// `test_callback_run((a, b) => a + b, [1, 2])` => 3
+extern "C" fn test_callback_run(
+  env: napi_env,
+  info: napi_callback_info,
+) -> napi_value {
+  let (args, argc, _) = crate::get_callback_info!(env, info, 2);
+  assert_eq!(argc, 2);
+
+  let mut ty = -1;
+  assert!(unsafe { napi_typeof(env, args[0], &mut ty) } == napi_ok);
+  assert_eq!(ty, napi_function);
+
+  let mut ty = -1;
+  assert!(unsafe { napi_typeof(env, args[1], &mut ty) } == napi_ok);
+  assert_eq!(ty, napi_object);
+
+  let mut len = 0;
+  assert!(unsafe { napi_get_array_length(env, args[1], &mut len) } == napi_ok);
+
+  let mut argv = Vec::with_capacity(len as usize);
+  for index in 0..len {
+    let mut value: napi_value = ptr::null_mut();
+    assert!(
+      unsafe { napi_get_element(env, args[1], index, &mut value) } == napi_ok
+    );
+    argv.push(value);
+  }
+  let mut global: napi_value = ptr::null_mut();
+  assert!(unsafe { napi_get_global(env, &mut global) } == napi_ok);
+
+  let mut result: napi_value = ptr::null_mut();
+  assert!(
+    unsafe {
+      napi_call_function(
+        env,
+        global,
+        args[0],
+        argv.len(),
+        argv.as_mut_ptr(),
+        &mut result,
+      )
+    } == napi_ok
+  );
+
+  result
+}
+
+extern "C" fn test_callback_run_with_recv(
+  env: napi_env,
+  info: napi_callback_info,
+) -> napi_value {
+  let (args, argc, _) = crate::get_callback_info!(env, info, 3);
+  assert_eq!(argc, 3);
+
+  let mut ty = -1;
+  assert!(unsafe { napi_typeof(env, args[0], &mut ty) } == napi_ok);
+  assert_eq!(ty, napi_function);
+
+  let mut ty = -1;
+  assert!(unsafe { napi_typeof(env, args[1], &mut ty) } == napi_ok);
+  assert_eq!(ty, napi_object);
+
+  let mut len = 0;
+  assert!(unsafe { napi_get_array_length(env, args[1], &mut len) } == napi_ok);
+
+  let mut argv = Vec::with_capacity(len as usize);
+  for index in 0..len {
+    let mut value: napi_value = ptr::null_mut();
+    assert!(
+      unsafe { napi_get_element(env, args[1], index, &mut value) } == napi_ok
+    );
+    argv.push(value);
+  }
+
+  let mut result: napi_value = ptr::null_mut();
+  assert!(
+    unsafe {
+      napi_call_function(
+        env,
+        args[2], // recv
+        args[0], // cb
+        argv.len(),
+        argv.as_mut_ptr(),
+        &mut result,
+      )
+    } == napi_ok
+  );
+
+  result
+}
+
+pub fn init(env: napi_env, exports: napi_value) {
+  let properties = &[
+    crate::new_property!(env, "test_callback_run\0", test_callback_run),
+    crate::new_property!(
+      env,
+      "test_callback_run_with_recv\0",
+      test_callback_run_with_recv
+    ),
+  ];
+
+  unsafe {
+    napi_define_properties(env, exports, properties.len(), properties.as_ptr())
+  };
+}