From 06bd692e5c4a8f66960d3919e7087530b60c20dd Mon Sep 17 00:00:00 2001
From: Liam Murphy <43807659+Liamolucko@users.noreply.github.com>
Date: Tue, 26 Jan 2021 23:34:40 +1100
Subject: fix(std/node): Stop callbacks being called twice when callback throws
 error (#8867)

---
 std/node/_fs/_fs_readFile_test.ts | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'std/node/_fs/_fs_readFile_test.ts')

diff --git a/std/node/_fs/_fs_readFile_test.ts b/std/node/_fs/_fs_readFile_test.ts
index 50fe569ff..7af32c8a1 100644
--- a/std/node/_fs/_fs_readFile_test.ts
+++ b/std/node/_fs/_fs_readFile_test.ts
@@ -1,4 +1,5 @@
 // Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
+import { assertCallbackErrorUncaught } from "../_utils.ts";
 import { readFile, readFileSync } from "./_fs_readFile.ts";
 import * as path from "../../path/mod.ts";
 import { assert, assertEquals } from "../../testing/asserts.ts";
@@ -103,3 +104,15 @@ Deno.test("readFileEncodeAsString", function () {
   assertEquals(typeof data, "string");
   assertEquals(data as string, "hello world");
 });
+
+Deno.test("[std/node/fs] readFile callback isn't called twice if error is thrown", async () => {
+  const tempFile = await Deno.makeTempFile();
+  const importUrl = new URL("./_fs_readFile.ts", import.meta.url);
+  await assertCallbackErrorUncaught({
+    prelude: `import { readFile } from ${JSON.stringify(importUrl)}`,
+    invocation: `readFile(${JSON.stringify(tempFile)}, `,
+    async cleanup() {
+      await Deno.remove(tempFile);
+    },
+  });
+});
-- 
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