1 files changed, 45 insertions, 0 deletions
diff --git a/js/src/tests/non262/AsyncIterator/prototype/take/close-iterator-when-none-remaining.js b/js/src/tests/non262/AsyncIterator/prototype/take/close-iterator-when-none-remaining.js
new file mode 100644
index 0000000000..6ae3e34b5d
--- /dev/null
+++ b/js/src/tests/non262/AsyncIterator/prototype/take/close-iterator-when-none-remaining.js
@@ -0,0 +1,45 @@
+// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator'))
+
+//
+//
+/*---
+esid: pending
+description: %AsyncIterator.prototype%.take closes the iterator when remaining is 0.
+info: >
+  Iterator Helpers proposal 2.1.6.4
+features: [iterator-helpers]
+---*/
+
+class TestIterator extends AsyncIterator {
+  async next() {
+    return {done: false, value: 'value'};
+  }
+
+  closed = false;
+  async return() {
+    this.closed = true;
+    return {done: true};
+  }
+}
+
+const iter = new TestIterator();
+const iterTake = iter.take(1);
+
+iterTake.next().then(
+  ({done, value}) => {
+    assertEq(done, false);
+    assertEq(value, 'value');
+    assertEq(iter.closed, false);
+
+    iterTake.next().then(
+      ({done, value}) => {
+        assertEq(done, true);
+        assertEq(value, undefined);
+        assertEq(iter.closed, true);
+      }
+    );
+  }
+);
+
+if (typeof reportCompare == 'function')
+  reportCompare(0, 0);