1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/tests/non262/AsyncIterator/prototype/forEach/interleaving-calls.js b/js/src/tests/non262/AsyncIterator/prototype/forEach/interleaving-calls.js
new file mode 100644
index 0000000000..c8c47bde45
--- /dev/null
+++ b/js/src/tests/non262/AsyncIterator/prototype/forEach/interleaving-calls.js
@@ -0,0 +1,24 @@
+// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator'))
+
+const log = [];
+async function* gen(n) {
+  log.push(`${n}`);
+  yield 1;
+  log.push(`${n}`);
+  yield 2;
+}
+
+Promise.all([gen(1).forEach(() => {}), gen(2).forEach(() => {})]).then(
+  () => {
+    assertEq(
+      log.join(' '),
+      '1 2 1 2',
+    );
+  },
+  err => {
+    throw err;
+  }
+);
+
+if (typeof reportCompare === 'function')
+  reportCompare(0, 0);