1 files changed, 20 insertions, 0 deletions
diff --git a/cli/tests/testdata/finalization_registry.js b/cli/tests/testdata/finalization_registry.js
new file mode 100644
index 000000000..f75979358
--- /dev/null
+++ b/cli/tests/testdata/finalization_registry.js
@@ -0,0 +1,20 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
+"use strict";
+
+function assertEquals(a, b) {
+  if (a === b) return;
+  throw a + " does not equal " + b;
+}
+
+const registry = new FinalizationRegistry((value) => {
+  assertEquals(value, "called!");
+  Deno.core.print("FinalizationRegistry called!\n");
+});
+
+(function () {
+  let x = {};
+  registry.register(x, "called!");
+  x = null;
+})();
+
+gc();