1 files changed, 29 insertions, 0 deletions
diff --git a/std/node/_fs/_fs_watch_test.ts b/std/node/_fs/_fs_watch_test.ts
new file mode 100644
index 000000000..d8ea84be1
--- /dev/null
+++ b/std/node/_fs/_fs_watch_test.ts
@@ -0,0 +1,29 @@
+import { watch } from "./_fs_watch.ts";
+import { assertEquals } from "../../testing/asserts.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]> = [];
+    const watcher = watch(
+      file,
+      (eventType, filename) => result.push([eventType, filename]),
+    );
+    await wait(100);
+    Deno.writeTextFileSync(file, "something");
+    await wait(100);
+    watcher.close();
+    assertEquals(result, [
+      ["modify", file],
+      ["modify", file],
+      ["access", file],
+    ]);
+  },
+});