1 files changed, 81 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-stream-big-push.js b/tests/node_compat/test/parallel/test-stream-big-push.js
new file mode 100644
index 000000000..2e6d01fe2
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-stream-big-push.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.
+
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const stream = require('stream');
+const str = 'asdfasdfasdfasdfasdf';
+
+const r = new stream.Readable({
+  highWaterMark: 5,
+  encoding: 'utf8'
+});
+
+let reads = 0;
+
+function _read() {
+  if (reads === 0) {
+    setTimeout(() => {
+      r.push(str);
+    }, 1);
+    reads++;
+  } else if (reads === 1) {
+    const ret = r.push(str);
+    assert.strictEqual(ret, false);
+    reads++;
+  } else {
+    r.push(null);
+  }
+}
+
+r._read = common.mustCall(_read, 3);
+
+r.on('end', common.mustCall());
+
+// Push some data in to start.
+// We've never gotten any read event at this point.
+const ret = r.push(str);
+// Should be false.  > hwm
+assert(!ret);
+let chunk = r.read();
+assert.strictEqual(chunk, str);
+chunk = r.read();
+assert.strictEqual(chunk, null);
+
+r.once('readable', () => {
+  // This time, we'll get *all* the remaining data, because
+  // it's been added synchronously, as the read WOULD take
+  // us below the hwm, and so it triggered a _read() again,
+  // which synchronously added more, which we then return.
+  chunk = r.read();
+  assert.strictEqual(chunk, str + str);
+
+  chunk = r.read();
+  assert.strictEqual(chunk, null);
+});