1 files changed, 34 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Iterator/prototype/flatMap/next-method-returns-throwing-done.js b/js/src/tests/test262/built-ins/Iterator/prototype/flatMap/next-method-returns-throwing-done.js
new file mode 100644
index 0000000000..62fe294ed0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Iterator/prototype/flatMap/next-method-returns-throwing-done.js
@@ -0,0 +1,34 @@
+// |reftest| shell-option(--enable-iterator-helpers) skip-if(!this.hasOwnProperty('Iterator')||!xulRuntime.shell) -- iterator-helpers is not enabled unconditionally, requires shell-options
+// Copyright (C) 2023 Michael Ficarra. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-iteratorprototype.flatMap
+description: >
+  Underlying iterator next returns object with throwing done getter
+info: |
+  %Iterator.prototype%.flatMap ( mapper )
+
+features: [iterator-helpers]
+flags: []
+---*/
+class ThrowingIterator extends Iterator {
+  next() {
+    return {
+      get done() {
+        throw new Test262Error();
+      },
+      value: 1,
+    };
+  }
+  return() {
+    throw new Error();
+  }
+}
+
+let iterator = new ThrowingIterator().flatMap(x => [x]);
+
+assert.throws(Test262Error, function () {
+  iterator.next();
+});
+
+reportCompare(0, 0);