1 files changed, 81 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-stream-readable-pause-and-resume.js b/tests/node_compat/test/parallel/test-stream-readable-pause-and-resume.js
new file mode 100644
index 000000000..923349ef4
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-stream-readable-pause-and-resume.js
@@ -0,0 +1,81 @@
+// 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 assert = require('assert');
+const { Readable } = require('stream');
+
+let ticks = 18;
+let expectedData = 19;
+
+const rs = new Readable({
+  objectMode: true,
+  read: () => {
+    if (ticks-- > 0)
+      return process.nextTick(() => rs.push({}));
+    rs.push({});
+    rs.push(null);
+  }
+});
+
+rs.on('end', common.mustCall());
+readAndPause();
+
+function readAndPause() {
+  // Does a on(data) -> pause -> wait -> resume -> on(data) ... loop.
+  // Expects on(data) to never fire if the stream is paused.
+  const ondata = common.mustCall((data) => {
+    rs.pause();
+
+    expectedData--;
+    if (expectedData <= 0)
+      return;
+
+    setImmediate(function() {
+      rs.removeListener('data', ondata);
+      readAndPause();
+      rs.resume();
+    });
+  }, 1); // Only call ondata once
+
+  rs.on('data', ondata);
+}
+
+{
+  const readable = new Readable({
+    read() {}
+  });
+
+  function read() {}
+
+  readable.setEncoding('utf8');
+  readable.on('readable', read);
+  readable.removeListener('readable', read);
+  readable.pause();
+
+  process.nextTick(function() {
+    assert(readable.isPaused());
+  });
+}
+
+{
+  const { PassThrough } = require('stream');
+
+  const source3 = new PassThrough();
+  const target3 = new PassThrough();
+
+  const chunk = Buffer.allocUnsafe(1000);
+  while (target3.write(chunk));
+
+  source3.pipe(target3);
+  target3.on('drain', common.mustCall(() => {
+    assert(!source3.isPaused());
+  }));
+  target3.on('data', () => {});
+}