1 files changed, 25 insertions, 1 deletions
diff --git a/test_napi/typedarray_test.js b/test_napi/typedarray_test.js
index 3cd084dc8..f9b346626 100644
--- a/test_napi/typedarray_test.js
+++ b/test_napi/typedarray_test.js
@@ -1,9 +1,33 @@
 // Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
 
-import { assertEquals, loadTestLibrary } from "./common.js";
+import { assert, assertEquals, loadTestLibrary } from "./common.js";
 
 const typedarray = loadTestLibrary();
 
+Deno.test("napi typedarray uint8", function () {
+  const byteArray = new Uint8Array([0, 1, 2]);
+  assertEquals(byteArray.length, 3);
+
+  const byteResult = typedarray.test_multiply(byteArray, 3);
+  assert(byteResult instanceof Uint8Array);
+  assertEquals(byteResult.length, 3);
+  assertEquals(byteResult[0], 0);
+  assertEquals(byteResult[1], 3);
+  assertEquals(byteResult[2], 6);
+});
+
+Deno.test("napi typedarray float64", function () {
+  const doubleArray = new Float64Array([0.0, 1.1, 2.2]);
+  assertEquals(doubleArray.length, 3);
+
+  const doubleResult = typedarray.test_multiply(doubleArray, -3);
+  assert(doubleResult instanceof Float64Array);
+  assertEquals(doubleResult.length, 3);
+  assertEquals(doubleResult[0], -0);
+  assertEquals(Math.round(10 * doubleResult[1]) / 10, -3.3);
+  assertEquals(Math.round(10 * doubleResult[2]) / 10, -6.6);
+});
+
 Deno.test("napi typedarray external", function () {
   assertEquals(
     new Uint8Array(typedarray.test_external()),