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-rw-r--r--tests/unit_node/_fs/_fs_watch_test.ts27
1 files changed, 27 insertions, 0 deletions
diff --git a/tests/unit_node/_fs/_fs_watch_test.ts b/tests/unit_node/_fs/_fs_watch_test.ts
new file mode 100644
index 000000000..ffa6cac45
--- /dev/null
+++ b/tests/unit_node/_fs/_fs_watch_test.ts
@@ -0,0 +1,27 @@
+// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
+import { watch } from "node:fs";
+import { assertEquals } from "@test_util/std/assert/mod.ts";
+
+function wait(time: number) {
+ return new Promise((resolve) => {
+ setTimeout(resolve, time);
+ });
+}
+
+Deno.test({
+ name: "watching a file",
+ async fn() {
+ const file = Deno.makeTempFileSync();
+ const result: Array<[string, string | null]> = [];
+ const watcher = watch(
+ file,
+ (eventType, filename) => result.push([eventType, filename]),
+ );
+ await wait(100);
+ Deno.writeTextFileSync(file, "something");
+ await wait(100);
+ watcher.close();
+ await wait(100);
+ assertEquals(result.length >= 1, true);
+ },
+});