1 files changed, 34 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-stream-readable-hwm-0-async.js b/tests/node_compat/test/parallel/test-stream-readable-hwm-0-async.js
new file mode 100644
index 000000000..c797129ee
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-stream-readable-hwm-0-async.js
@@ -0,0 +1,34 @@
+// 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');
+
+// This test ensures that Readable stream will continue to call _read
+// for streams with highWaterMark === 0 once the stream returns data
+// by calling push() asynchronously.
+
+const { Readable } = require('stream');
+
+let count = 5;
+
+const r = new Readable({
+  // Called 6 times: First 5 return data, last one signals end of stream.
+  read: common.mustCall(() => {
+    process.nextTick(common.mustCall(() => {
+      if (count--)
+        r.push('a');
+      else
+        r.push(null);
+    }));
+  }, 6),
+  highWaterMark: 0,
+});
+
+r.on('end', common.mustCall());
+r.on('data', common.mustCall(5));