1 files changed, 178 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-stream-readable-reading-readingMore.js b/tests/node_compat/test/parallel/test-stream-readable-reading-readingMore.js
new file mode 100644
index 000000000..26663b88b
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-stream-readable-reading-readingMore.js
@@ -0,0 +1,178 @@
+// 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').Readable;
+
+{
+  const readable = new Readable({
+    read(size) {}
+  });
+
+  const state = readable._readableState;
+
+  // Starting off with false initially.
+  assert.strictEqual(state.reading, false);
+  assert.strictEqual(state.readingMore, false);
+
+  readable.on('data', common.mustCall((data) => {
+    // While in a flowing state with a 'readable' listener
+    // we should not be reading more
+    if (readable.readableFlowing)
+      assert.strictEqual(state.readingMore, true);
+
+    // Reading as long as we've not ended
+    assert.strictEqual(state.reading, !state.ended);
+  }, 2));
+
+  function onStreamEnd() {
+    // End of stream; state.reading is false
+    // And so should be readingMore.
+    assert.strictEqual(state.readingMore, false);
+    assert.strictEqual(state.reading, false);
+  }
+
+  const expectedReadingMore = [true, true, false];
+  readable.on('readable', common.mustCall(() => {
+    // There is only one readingMore scheduled from on('data'),
+    // after which everything is governed by the .read() call
+    assert.strictEqual(state.readingMore, expectedReadingMore.shift());
+
+    // If the stream has ended, we shouldn't be reading
+    assert.strictEqual(state.ended, !state.reading);
+
+    // Consume all the data
+    while (readable.read() !== null);
+
+    if (expectedReadingMore.length === 0) // Reached end of stream
+      process.nextTick(common.mustCall(onStreamEnd, 1));
+  }, 3));
+
+  readable.on('end', common.mustCall(onStreamEnd));
+  readable.push('pushed');
+
+  readable.read(6);
+
+  // reading
+  assert.strictEqual(state.reading, true);
+  assert.strictEqual(state.readingMore, true);
+
+  // add chunk to front
+  readable.unshift('unshifted');
+
+  // end
+  readable.push(null);
+}
+
+{
+  const readable = new Readable({
+    read(size) {}
+  });
+
+  const state = readable._readableState;
+
+  // Starting off with false initially.
+  assert.strictEqual(state.reading, false);
+  assert.strictEqual(state.readingMore, false);
+
+  readable.on('data', common.mustCall((data) => {
+    // While in a flowing state without a 'readable' listener
+    // we should be reading more
+    if (readable.readableFlowing)
+      assert.strictEqual(state.readingMore, true);
+
+    // Reading as long as we've not ended
+    assert.strictEqual(state.reading, !state.ended);
+  }, 2));
+
+  function onStreamEnd() {
+    // End of stream; state.reading is false
+    // And so should be readingMore.
+    assert.strictEqual(state.readingMore, false);
+    assert.strictEqual(state.reading, false);
+  }
+
+  readable.on('end', common.mustCall(onStreamEnd));
+  readable.push('pushed');
+
+  // Stop emitting 'data' events
+  assert.strictEqual(state.flowing, true);
+  readable.pause();
+
+  // paused
+  assert.strictEqual(state.reading, false);
+  assert.strictEqual(state.flowing, false);
+
+  readable.resume();
+  assert.strictEqual(state.reading, false);
+  assert.strictEqual(state.flowing, true);
+
+  // add chunk to front
+  readable.unshift('unshifted');
+
+  // end
+  readable.push(null);
+}
+
+{
+  const readable = new Readable({
+    read(size) {}
+  });
+
+  const state = readable._readableState;
+
+  // Starting off with false initially.
+  assert.strictEqual(state.reading, false);
+  assert.strictEqual(state.readingMore, false);
+
+  const onReadable = common.mustNotCall();
+
+  readable.on('readable', onReadable);
+
+  readable.on('data', common.mustCall((data) => {
+    // Reading as long as we've not ended
+    assert.strictEqual(state.reading, !state.ended);
+  }, 2));
+
+  readable.removeListener('readable', onReadable);
+
+  function onStreamEnd() {
+    // End of stream; state.reading is false
+    // And so should be readingMore.
+    assert.strictEqual(state.readingMore, false);
+    assert.strictEqual(state.reading, false);
+  }
+
+  readable.on('end', common.mustCall(onStreamEnd));
+  readable.push('pushed');
+
+  // We are still not flowing, we will be resuming in the next tick
+  assert.strictEqual(state.flowing, false);
+
+  // Wait for nextTick, so the readableListener flag resets
+  process.nextTick(function() {
+    readable.resume();
+
+    // Stop emitting 'data' events
+    assert.strictEqual(state.flowing, true);
+    readable.pause();
+
+    // paused
+    assert.strictEqual(state.flowing, false);
+
+    readable.resume();
+    assert.strictEqual(state.flowing, true);
+
+    // add chunk to front
+    readable.unshift('unshifted');
+
+    // end
+    readable.push(null);
+  });
+}