From a24d3e8763bc48b69936db9231efb76766914303 Mon Sep 17 00:00:00 2001
From: David Sherret <dsherret@users.noreply.github.com>
Date: Mon, 4 Dec 2023 16:05:40 -0500
Subject: perf(node/fs): faster `existsSync` when not exists (#21458)

---
 cli/tests/unit_node/fs_test.ts | 39 ++++++++++++++++++++++++++++++++++++++-
 1 file changed, 38 insertions(+), 1 deletion(-)

(limited to 'cli/tests')

diff --git a/cli/tests/unit_node/fs_test.ts b/cli/tests/unit_node/fs_test.ts
index 310113233..d9fe3af76 100644
--- a/cli/tests/unit_node/fs_test.ts
+++ b/cli/tests/unit_node/fs_test.ts
@@ -3,7 +3,8 @@
 import { assert, assertThrows } from "../../../test_util/std/assert/mod.ts";
 import { join } from "node:path";
 import { tmpdir } from "node:os";
-import { mkdtempSync, readFileSync, writeFileSync } from "node:fs";
+import { existsSync, mkdtempSync, readFileSync, writeFileSync } from "node:fs";
+import { pathToAbsoluteFileUrl } from "../unit/test_util.ts";
 
 Deno.test(
   "[node/fs writeFileSync] write file without option",
@@ -43,3 +44,39 @@ Deno.test(
     );
   },
 );
+
+Deno.test(
+  "[node/fs existsSync] path",
+  { permissions: { read: true } },
+  () => {
+    assert(existsSync("cli/tests/testdata/assets/fixture.json"));
+  },
+);
+
+Deno.test(
+  "[node/fs existsSync] url",
+  { permissions: { read: true } },
+  () => {
+    assert(existsSync(
+      pathToAbsoluteFileUrl("cli/tests/testdata/assets/fixture.json"),
+    ));
+  },
+);
+
+Deno.test(
+  "[node/fs existsSync] no permission",
+  { permissions: { read: false } },
+  () => {
+    assertThrows(() => {
+      existsSync("cli/tests/testdata/assets/fixture.json");
+    }, Deno.errors.PermissionDenied);
+  },
+);
+
+Deno.test(
+  "[node/fs existsSync] not exists",
+  { permissions: { read: true } },
+  () => {
+    assert(!existsSync("bad_filename"));
+  },
+);
-- 
cgit v1.2.3