1 files changed, 28 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-stream-readable-resume-hwm.js b/tests/node_compat/test/parallel/test-stream-readable-resume-hwm.js
new file mode 100644
index 000000000..0e490529c
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-stream-readable-resume-hwm.js
@@ -0,0 +1,28 @@
+// deno-fmt-ignore-file
+// deno-lint-ignore-file
+
+// Copyright Joyent and Node contributors. All rights reserved. MIT license.
+// Taken from Node 18.12.1
+// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
+
+'use strict';
+const common = require('../common');
+const { Readable } = require('stream');
+
+// readable.resume() should not lead to a ._read() call being scheduled
+// when we exceed the high water mark already.
+
+const readable = new Readable({
+  read: common.mustNotCall(),
+  highWaterMark: 100
+});
+
+// Fill up the internal buffer so that we definitely exceed the HWM:
+for (let i = 0; i < 10; i++)
+  readable.push('a'.repeat(200));
+
+// Call resume, and pause after one chunk.
+// The .pause() is just so that we don’t empty the buffer fully, which would
+// be a valid reason to call ._read().
+readable.resume();
+readable.once('data', common.mustCall(() => readable.pause()));