fix(std/node): Stop callbacks being called twice when callback throws error (#8867)

1 files changed, 9 insertions, 0 deletions

diff --git a/std/node/_fs/_fs_readlink_test.ts b/std/node/_fs/_fs_readlink_test.ts
index 06cd7e2dc..cb3dd25b4 100644
--- a/std/node/_fs/_fs_readlink_test.ts
+++ b/std/node/_fs/_fs_readlink_test.ts
@@ -1,4 +1,5 @@
 // Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
+import { assertCallbackErrorUncaught } from "../_utils.ts";
 import { readlink, readlinkSync } from "./_fs_readlink.ts";
 import { assert, assertEquals } from "../../testing/asserts.ts";
 import * as path from "../path.ts";
@@ -64,3 +65,11 @@ Deno.test({
     assertEquals(new TextDecoder().decode(data as Uint8Array), oldname);
   },
 });
+
+Deno.test("[std/node/fs] readlink callback isn't called twice if error is thrown", async () => {
+  const importUrl = new URL("./_fs_readlink.ts", import.meta.url);
+  await assertCallbackErrorUncaught({
+    prelude: `import { readlink } from ${JSON.stringify(importUrl)}`,
+    invocation: `readlink(${JSON.stringify(newname)}, `,
+  });
+});