1 files changed, 18 insertions, 0 deletions
diff --git a/cli/tests/unit_node/process_test.ts b/cli/tests/unit_node/process_test.ts
index 49b753db3..7e927a8ad 100644
--- a/cli/tests/unit_node/process_test.ts
+++ b/cli/tests/unit_node/process_test.ts
@@ -2,6 +2,8 @@
 // Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
 
 import process, { argv, env } from "node:process";
+import { Readable } from "node:stream";
+import { once } from "node:events";
 import {
   assert,
   assertEquals,
@@ -746,3 +748,19 @@ Deno.test({
     assertEquals(stripColor(decoder.decode(stdout).trim()), "really exited");
   },
 });
+
+Deno.test({
+  name: "process.stdout isn't closed when source stream ended",
+  async fn() {
+    const source = Readable.from(["foo", "bar"]);
+
+    source.pipe(process.stdout);
+    await once(source, "end");
+
+    // Wait a bit to ensure that streaming is completely finished.
+    await delay(10);
+
+    // This checks if the rid 1 is still valid.
+    assert(typeof process.stdout.isTTY === "boolean");
+  },
+});