1 files changed, 85 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for-await-of/async-func-decl-dstr-array-elem-trlg-iter-elision-iter-nrml-close-null.js b/js/src/tests/test262/language/statements/for-await-of/async-func-decl-dstr-array-elem-trlg-iter-elision-iter-nrml-close-null.js
new file mode 100644
index 0000000000..4ef1ff107c
--- /dev/null
+++ b/js/src/tests/test262/language/statements/for-await-of/async-func-decl-dstr-array-elem-trlg-iter-elision-iter-nrml-close-null.js
@@ -0,0 +1,85 @@
+// |reftest| async
+// This file was procedurally generated from the following sources:
+// - src/dstr-assignment-for-await/array-elem-trlg-iter-elision-iter-nrml-close-null.case
+// - src/dstr-assignment-for-await/default/async-func-decl.template
+/*---
+description: IteratorClose throws a TypeError when `return` returns a non-Object value (for-await-of statement in an async function declaration)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, 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 , Elisionopt AssignmentRestElementopt ]
+
+    [...]
+    6. If Elision is present, then
+       a. Let status be the result of performing
+          IteratorDestructuringAssignmentEvaluation of Elision with
+          iteratorRecord as the argument.
+       b. If status is an abrupt completion, then
+          [...]
+    8. If iteratorRecord.[[done]] is false, return IteratorClose(iterator,
+       status).
+
+    7.4.6 IteratorClose( iterator, completion )
+
+    [...]
+    6. Let innerResult be Call(return, iterator, « »).
+    7. If completion.[[type]] is throw, return Completion(completion).
+    8. If innerResult.[[type]] is throw, return Completion(innerResult).
+    9. If Type(innerResult.[[value]]) is not Object, throw a TypeError
+       exception.
+
+---*/
+let x;
+let nextCount = 0;
+let iterator = {
+  next() {
+    nextCount += 1;
+    // Set an upper-bound to limit unnecessary iteration in non-conformant
+    // implementations
+    return { done: nextCount > 10 };
+  },
+  return() {
+    return null;
+  }
+};
+let iterable = {
+  [Symbol.iterator]() {
+    return iterator;
+  }
+};
+
+
+let iterCount = 0;
+async function fn() {
+  for await ([ x , , ] of [iterable]) {
+    
+    iterCount += 1;
+  }
+}
+
+let promise = fn();
+
+promise.then(() => $DONE('Promise incorrectly fulfilled.'), ({ constructor }) => {
+  assert.sameValue(iterCount, 0);
+  assert.sameValue(nextCount, 2);
+  assert.sameValue(constructor, TypeError);
+}).then($DONE, $DONE);