Add m-esr52 at 52.6.0

1 files changed, 17 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/for-of/array-iterator-surfaces-1.js b/js/src/jit-test/tests/for-of/array-iterator-surfaces-1.js
new file mode 100644
index 000000000..6757acb3e
--- /dev/null
+++ b/js/src/jit-test/tests/for-of/array-iterator-surfaces-1.js
@@ -0,0 +1,17 @@
+// Superficial tests of the Array.prototype[@@iterator] builtin function and its workalikes.
+
+load(libdir + "iteration.js");
+
+var constructors = [Array, String, Uint8Array, Uint8ClampedArray];
+for (var c of constructors) {
+    assertEq(c.prototype[Symbol.iterator].length, 0);
+
+    var loc = (c === Array || c === String)
+            ? c.prototype
+            : Object.getPrototypeOf(c.prototype);
+
+    var desc = Object.getOwnPropertyDescriptor(loc, Symbol.iterator);
+    assertEq(desc.configurable, true);
+    assertEq(desc.enumerable, false);
+    assertEq(desc.writable, true);
+}