1 files changed, 65 insertions, 0 deletions
diff --git a/js/src/tests/non262/AsyncIterator/prototype/async-iterator-helpers-from-other-global.js b/js/src/tests/non262/AsyncIterator/prototype/async-iterator-helpers-from-other-global.js
new file mode 100644
index 0000000000..f8b8d719cd
--- /dev/null
+++ b/js/src/tests/non262/AsyncIterator/prototype/async-iterator-helpers-from-other-global.js
@@ -0,0 +1,65 @@
+// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator'))
+
+class TestError extends Error {}
+
+class TestIterator extends AsyncIterator {
+  async next() {
+    return {done: false, value: 'value'};
+  }
+
+  closed = false;
+  async return(value) {
+    this.closed = true;
+    return {done: true, value};
+  }
+}
+
+function checkIterResult({done, value}, expectedDone, expectedValue) {
+  assertEq(done, expectedDone);
+  assertEq(Array.isArray(value) ? value[1] : value, expectedValue);
+}
+
+const otherGlobal = newGlobal({newCompartment: true});
+
+const methods = [
+  ["map", x => x],
+  ["filter", x => true],
+  ["take", Infinity],
+  ["drop", 0],
+  ["asIndexedPairs", undefined],
+  ["flatMap", async function*(x) { yield x; }],
+];
+
+const {next: otherNext, return: otherReturn, throw: otherThrow} =
+  Object.getPrototypeOf(otherGlobal.eval("(async function*() {})().map(x => x)"));
+
+(async () => {
+  for (const [method, arg] of methods) {
+    const iterator = new TestIterator();
+    const helper = iterator[method](arg);
+    checkIterResult(await otherNext.call(helper), false, 'value');
+  }
+
+  for (const [method, arg] of methods) {
+    const iterator = new TestIterator();
+    const helper = iterator[method](arg);
+    assertEq(iterator.closed, false);
+    checkIterResult(await otherReturn.call(helper), true, undefined);
+    assertEq(iterator.closed, true);
+  }
+
+  for (const [method, arg] of methods) {
+    const iterator = new TestIterator();
+    const helper = iterator[method](arg);
+    try {
+      await otherThrow.call(helper, new TestError());
+      assertEq(true, false, 'Expected exception');
+    } catch (exc) {
+      assertEq(exc instanceof TestError, true);
+    }
+    checkIterResult(await helper.next(), true, undefined);
+  }
+})();
+
+if (typeof reportCompare === 'function')
+  reportCompare(0, 0);