From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 .../tests/ecma_6/Generators/delegating-yield-12.js | 49 ++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 js/src/tests/ecma_6/Generators/delegating-yield-12.js

(limited to 'js/src/tests/ecma_6/Generators/delegating-yield-12.js')

diff --git a/js/src/tests/ecma_6/Generators/delegating-yield-12.js b/js/src/tests/ecma_6/Generators/delegating-yield-12.js
new file mode 100644
index 000000000..9ed7666e1
--- /dev/null
+++ b/js/src/tests/ecma_6/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);
-- 
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