1 files changed, 53 insertions, 0 deletions
diff --git a/test_napi/src/typedarray.rs b/test_napi/src/typedarray.rs
new file mode 100644
index 000000000..f7d2e2f24
--- /dev/null
+++ b/test_napi/src/typedarray.rs
@@ -0,0 +1,53 @@
+// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
+
+use core::ffi::c_void;
+use napi_sys::Status::napi_ok;
+use napi_sys::TypedarrayType::uint8_array;
+use napi_sys::*;
+use std::ptr;
+
+extern "C" fn test_external(
+  env: napi_env,
+  _info: napi_callback_info,
+) -> napi_value {
+  let mut arraybuffer: napi_value = ptr::null_mut();
+  let mut external: Box<[u8; 4]> = Box::new([0, 1, 2, 3]);
+  assert!(
+    unsafe {
+      napi_create_external_arraybuffer(
+        env,
+        external.as_mut_ptr() as *mut c_void,
+        external.len(),
+        None,
+        ptr::null_mut(),
+        &mut arraybuffer,
+      )
+    } == napi_ok
+  );
+
+  let mut typedarray: napi_value = ptr::null_mut();
+  assert!(
+    unsafe {
+      napi_create_typedarray(
+        env,
+        uint8_array,
+        external.len(),
+        arraybuffer,
+        0,
+        &mut typedarray,
+      )
+    } == napi_ok
+  );
+
+  std::mem::forget(external); // Leak into JS land
+  typedarray
+}
+
+pub fn init(env: napi_env, exports: napi_value) {
+  let properties =
+    &[crate::new_property!(env, "test_external\0", test_external)];
+
+  unsafe {
+    napi_define_properties(env, exports, properties.len(), properties.as_ptr())
+  };
+}