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-rw-r--r--js/src/tests/non262/generators/delegating-yield-12.js49
1 files changed, 49 insertions, 0 deletions
diff --git a/js/src/tests/non262/generators/delegating-yield-12.js b/js/src/tests/non262/generators/delegating-yield-12.js
new file mode 100644
index 0000000000..9ed7666e11
--- /dev/null
+++ b/js/src/tests/non262/generators/delegating-yield-12.js
@@ -0,0 +1,49 @@
+// yield* calls @@iterator on the iterable to produce the iterator.
+
+var log = '';
+
+function IteratorWrapper(iterator) {
+ return {
+ next: function (val) {
+ log += 'n';
+ return iterator.next(val);
+ },
+
+ throw: function (exn) {
+ log += 't';
+ return iterator.throw(exn);
+ }
+ };
+}
+
+function IterableWrapper(iterable) {
+ var ret = {};
+
+ ret[Symbol.iterator] = function () {
+ log += 'i';
+ return IteratorWrapper(iterable[Symbol.iterator]());
+ }
+
+ return ret;
+}
+
+function* delegate(iter) { return yield* iter; }
+
+var iter = delegate(IterableWrapper([1, 2, 3]));
+assertIteratorNext(iter, 1);
+assertIteratorNext(iter, 2);
+assertIteratorNext(iter, 3);
+assertIteratorDone(iter, undefined);
+
+assertEq(log, 'innnn');
+
+iter = delegate([1, 2, 3]);
+assertIteratorNext(iter, 1);
+assertIteratorNext(iter, 2);
+assertIteratorNext(iter, 3);
+assertIteratorDone(iter, undefined);
+
+assertEq(log, 'innnn');
+
+if (typeof reportCompare == "function")
+ reportCompare(true, true);