1 files changed, 53 insertions, 0 deletions
diff --git a/test_napi/make_callback_test.js b/test_napi/make_callback_test.js
new file mode 100644
index 000000000..63ab18810
--- /dev/null
+++ b/test_napi/make_callback_test.js
@@ -0,0 +1,53 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+
+import { assertEquals, loadTestLibrary } from "./common.js";
+
+const mc = loadTestLibrary();
+
+Deno.test("napi makeCallback1", function () {
+  const resource = {};
+
+  let callCount = 0;
+  function cb() {
+    callCount++;
+    assertEquals(arguments.length, 0);
+    assertEquals(this, globalThis);
+    return 42;
+  }
+  assertEquals(mc.makeCallback(resource, globalThis, cb), 42);
+  assertEquals(callCount, 1);
+});
+
+Deno.test("napi makeCallback2", function () {
+  const resource = {};
+
+  let callCount = 0;
+  function cb(x) {
+    callCount++;
+    assertEquals(arguments.length, 1);
+    assertEquals(this, globalThis);
+    assertEquals(x, 1337);
+    return 42;
+  }
+  assertEquals(mc.makeCallback(resource, globalThis, cb, 1337), 42);
+  assertEquals(callCount, 1);
+});
+
+Deno.test("napi makeCallback3", function () {
+  const resource = {};
+
+  let callCount = 0;
+
+  function multiArgFunc(arg1, arg2, arg3) {
+    callCount++;
+    assertEquals(arg1, 1);
+    assertEquals(arg2, 2);
+    assertEquals(arg3, 3);
+    return 42;
+  }
+  assertEquals(
+    mc.makeCallback(resource, globalThis, multiArgFunc, 1, 2, 3),
+    42,
+  );
+  assertEquals(callCount, 1);
+});