Add m-esr52 at 52.6.0

1 files changed, 28 insertions, 0 deletions

diff --git a/js/src/tests/ecma_6/Map/iterable.js b/js/src/tests/ecma_6/Map/iterable.js
new file mode 100644
index 000000000..cf6b7228a
--- /dev/null
+++ b/js/src/tests/ecma_6/Map/iterable.js
@@ -0,0 +1,28 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/ */
+
+let length;
+let iterable = {
+   [Symbol.iterator]() { return this; },
+   next() { length = arguments.length; return {done: true}; }
+};
+
+new Map(iterable);
+// ensure no arguments are passed to next() during construction (Bug 1197095)
+assertEq(length, 0);
+
+let typeofThis;
+Object.defineProperty(Number.prototype, Symbol.iterator, {
+  value() {
+    "use strict";
+    typeofThis = typeof this;
+    return { next() { return {done: true}; } };
+  }
+});
+
+new Map(0);
+// ensure that iterable objects retain their type (Bug 1197094)
+assertEq(typeofThis, "number");
+
+if (typeof reportCompare === "function")
+  reportCompare(0, 0);