Add m-esr52 at 52.6.0

1 files changed, 10 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/collections/Map-iterator-add-2.js b/js/src/jit-test/tests/collections/Map-iterator-add-2.js
new file mode 100644
index 000000000..fce3dac6e
--- /dev/null
+++ b/js/src/jit-test/tests/collections/Map-iterator-add-2.js
@@ -0,0 +1,10 @@
+// A Map iterator does not iterate over new entries added after it throws StopIteration.
+
+load(libdir + "iteration.js");
+
+var map = new Map();
+var iter0 = map[Symbol.iterator](), iter1 = map[Symbol.iterator]();
+assertIteratorDone(iter0, undefined);  // closes iter0
+map.set(1, 2);
+assertIteratorDone(iter0, undefined);  // already closed
+assertIteratorNext(iter1, [1, 2]);     // was not yet closed