1 files changed, 84 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for-await-of/async-gen-decl-dstr-array-elem-iter-rtrn-close-null.js b/js/src/tests/test262/language/statements/for-await-of/async-gen-decl-dstr-array-elem-iter-rtrn-close-null.js
new file mode 100644
index 0000000000..84616ef77d
--- /dev/null
+++ b/js/src/tests/test262/language/statements/for-await-of/async-gen-decl-dstr-array-elem-iter-rtrn-close-null.js
@@ -0,0 +1,84 @@
+// |reftest| async
+// This file was procedurally generated from the following sources:
+// - src/dstr-assignment-for-await/array-elem-iter-rtrn-close-null.case
+// - src/dstr-assignment-for-await/async-generator/async-gen-decl.template
+/*---
+description: IteratorClose throws a TypeError when `return` returns a non-Object value (for-await-of statement in an async generator declaration)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+    IterationStatement :
+      for await ( LeftHandSideExpression of AssignmentExpression ) Statement
+
+    1. Let keyResult be the result of performing ? ForIn/OfHeadEvaluation(« »,
+       AssignmentExpression, iterate).
+    2. Return ? ForIn/OfBodyEvaluation(LeftHandSideExpression, Statement,
+       keyResult, assignment, labelSet).
+
+    13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+    [...]
+    5. If destructuring is true and if lhsKind is assignment, then
+       a. Assert: lhs is a LeftHandSideExpression.
+       b. Let assignmentPattern be the parse of the source text corresponding to
+          lhs using AssignmentPattern as the goal symbol.
+    [...]
+
+    ArrayAssignmentPattern : [ AssignmentElementList ]
+
+    [...]
+    4. If iteratorRecord.[[Done]] is false, return ? IteratorClose(iterator, result).
+    5. Return result.
+
+    7.4.6 IteratorClose( iterator, completion )
+
+    [...]
+    5. Let innerResult be Call(return, iterator, « »).
+    6. If completion.[[Type]] is throw, return Completion(completion).
+    7. If innerResult.[[Type]] is throw, return Completion(innerResult).
+    8. If Type(innerResult.[[Value]]) is not Object, throw a TypeError exception.
+
+---*/
+let unreachable = 0;
+let nextCount = 0;
+let returnCount = 0;
+let iterator = {
+  next() {
+    nextCount += 1;
+    return {done: false, value: undefined};
+  },
+  return() {
+    returnCount += 1;
+    return null;
+  }
+};
+let iterable = {
+  [Symbol.iterator]() {
+    return iterator;
+  }
+};
+
+let iterCount = 0;
+async function * fn() {
+  for await ([ {} = yield ] of [iterable]) {
+    unreachable += 1;
+    iterCount += 1;
+  }
+}
+
+let iter = fn();
+
+iter.next().then(result => {
+  assert.sameValue(nextCount, 1);
+  assert.sameValue(returnCount, 0);
+  assert.sameValue(result.value, undefined);
+  assert.sameValue(result.done, false);
+
+  iter.return().then(() => $DONE('Promise incorrectly fulfilled.'), ({ constructor }) => {
+    assert.sameValue(nextCount, 1);
+    assert.sameValue(returnCount, 1);
+    assert.sameValue(unreachable, 0);
+    assert.sameValue(constructor, TypeError);
+  }).then($DONE, $DONE);
+}, $DONE).catch($DONE);