1 files changed, 98 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-stream3-cork-end.js b/tests/node_compat/test/parallel/test-stream3-cork-end.js
new file mode 100644
index 000000000..52f881121
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-stream3-cork-end.js
@@ -0,0 +1,98 @@
+// 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';
+require('../common');
+const assert = require('assert');
+const stream = require('stream');
+const Writable = stream.Writable;
+
+// Test the buffering behavior of Writable streams.
+//
+// The call to cork() triggers storing chunks which are flushed
+// on calling end() and the stream subsequently ended.
+//
+// node version target: 0.12
+
+const expectedChunks = ['please', 'buffer', 'me', 'kindly'];
+const inputChunks = expectedChunks.slice(0);
+let seenChunks = [];
+let seenEnd = false;
+
+const w = new Writable();
+// Let's arrange to store the chunks.
+w._write = function(chunk, encoding, cb) {
+  // Stream end event is not seen before the last write.
+  assert.ok(!seenEnd);
+  // Default encoding given none was specified.
+  assert.strictEqual(encoding, 'buffer');
+
+  seenChunks.push(chunk);
+  cb();
+};
+// Let's record the stream end event.
+w.on('finish', () => {
+  seenEnd = true;
+});
+
+function writeChunks(remainingChunks, callback) {
+  const writeChunk = remainingChunks.shift();
+  let writeState;
+
+  if (writeChunk) {
+    setImmediate(() => {
+      writeState = w.write(writeChunk);
+      // We were not told to stop writing.
+      assert.ok(writeState);
+
+      writeChunks(remainingChunks, callback);
+    });
+  } else {
+    callback();
+  }
+}
+
+// Do an initial write.
+w.write('stuff');
+// The write was immediate.
+assert.strictEqual(seenChunks.length, 1);
+// Reset the seen chunks.
+seenChunks = [];
+
+// Trigger stream buffering.
+w.cork();
+
+// Write the bufferedChunks.
+writeChunks(inputChunks, () => {
+  // Should not have seen anything yet.
+  assert.strictEqual(seenChunks.length, 0);
+
+  // Trigger flush and ending the stream.
+  w.end();
+
+  // Stream should not ended in current tick.
+  assert.ok(!seenEnd);
+
+  // Buffered bytes should be seen in current tick.
+  assert.strictEqual(seenChunks.length, 4);
+
+  // Did the chunks match.
+  for (let i = 0, l = expectedChunks.length; i < l; i++) {
+    const seen = seenChunks[i];
+    // There was a chunk.
+    assert.ok(seen);
+
+    const expected = Buffer.from(expectedChunks[i]);
+    // It was what we expected.
+    assert.ok(seen.equals(expected));
+  }
+
+  setImmediate(() => {
+    // Stream should have ended in next tick.
+    assert.ok(seenEnd);
+  });
+});