From 5d9bb8b4b042f4d4fbbe61b31a50a26db7f1ae63 Mon Sep 17 00:00:00 2001
From: Leo Kettmeir <crowlkats@toaxl.com>
Date: Tue, 13 Dec 2022 05:12:49 +0100
Subject: feat: support `createNew` in `Deno.writeFile` (#17023)

---
 cli/tests/unit/write_file_test.ts | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

(limited to 'cli/tests')

diff --git a/cli/tests/unit/write_file_test.ts b/cli/tests/unit/write_file_test.ts
index 9cbc0b272..945807b3f 100644
--- a/cli/tests/unit/write_file_test.ts
+++ b/cli/tests/unit/write_file_test.ts
@@ -96,6 +96,20 @@ Deno.test(
   },
 );
 
+Deno.test(
+  { permissions: { read: true, write: true } },
+  function writeFileSyncCreateNew() {
+    const enc = new TextEncoder();
+    const data = enc.encode("Hello");
+    const filename = Deno.makeTempDirSync() + "/test.txt";
+    Deno.writeFileSync(filename, data, { createNew: true });
+
+    assertThrows(() => {
+      Deno.writeFileSync(filename, data, { createNew: true });
+    }, Deno.errors.AlreadyExists);
+  },
+);
+
 Deno.test(
   { permissions: { read: true, write: true } },
   function writeFileSyncAppend() {
@@ -216,6 +230,19 @@ Deno.test(
   },
 );
 
+Deno.test(
+  { permissions: { read: true, write: true } },
+  async function writeFileCreateNew() {
+    const enc = new TextEncoder();
+    const data = enc.encode("Hello");
+    const filename = Deno.makeTempDirSync() + "/test.txt";
+    await Deno.writeFile(filename, data, { createNew: true });
+    await assertRejects(async () => {
+      await Deno.writeFile(filename, data, { createNew: true });
+    }, Deno.errors.AlreadyExists);
+  },
+);
+
 Deno.test(
   { permissions: { read: true, write: true } },
   async function writeFileAppend() {
-- 
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