1 files changed, 28 insertions, 0 deletions
diff --git a/js/src/tests/non262/AsyncIterator/prototype/flatMap/flatMap.js b/js/src/tests/non262/AsyncIterator/prototype/flatMap/flatMap.js
new file mode 100644
index 0000000000..dbd17cb33b
--- /dev/null
+++ b/js/src/tests/non262/AsyncIterator/prototype/flatMap/flatMap.js
@@ -0,0 +1,28 @@
+// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator'))
+
+async function* gen() {
+  yield 1;
+  yield 2;
+  yield 3;
+}
+
+async function* inner(x) {
+  yield x;
+  yield x + 1;
+}
+
+let iter = gen().flatMap(x => inner(x));
+
+for (const v of [1, 2, 2, 3, 3, 4]) {
+  iter.next().then(
+    ({done, value}) => {
+      assertEq(done, false);
+      assertEq(value, v);
+    }
+  );
+}
+
+iter.next().then(({done}) => assertEq(done, true));
+
+if (typeof reportCompare === 'function')
+  reportCompare(0, 0);