Add m-esr52 at 52.6.0

1 files changed, 20 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/collections/Set-iterator-proxies-2.js b/js/src/jit-test/tests/collections/Set-iterator-proxies-2.js
new file mode 100644
index 000000000..75e456514
--- /dev/null
+++ b/js/src/jit-test/tests/collections/Set-iterator-proxies-2.js
@@ -0,0 +1,20 @@
+// map.iterator() and iter.next() are non-generic but work on cross-compartment wrappers.
+
+load(libdir + "asserts.js");
+load(libdir + "iteration.js");
+
+var g = newGlobal();
+
+var iterator_fn = Set.prototype[Symbol.iterator];
+assertThrowsInstanceOf(function () { iterator_fn.call({}); }, TypeError);
+assertThrowsInstanceOf(function () { iterator_fn.call(new Map()); }, TypeError);
+var setw = g.eval("new Set(['x', 'y'])");
+assertIteratorNext(iterator_fn.call(setw), "x");
+
+var next_fn = (new Set())[Symbol.iterator]().next;
+assertThrowsInstanceOf(function () { next_fn.call({}); }, TypeError);
+assertThrowsInstanceOf(function () { next_fn.call((new Map())[Symbol.iterator]()); }, TypeError);
+var iterw = setw[Symbol.iterator]();
+assertIteratorResult(next_fn.call(iterw), "x", false);
+assertIteratorResult(next_fn.call(iterw), "y", false);
+assertIteratorResult(next_fn.call(iterw), undefined, true);