Add m-esr52 at 52.6.0

1 files changed, 24 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/collections/iterator-noSuchMethod.js b/js/src/jit-test/tests/collections/iterator-noSuchMethod.js
new file mode 100644
index 000000000..f79d3fa31
--- /dev/null
+++ b/js/src/jit-test/tests/collections/iterator-noSuchMethod.js
@@ -0,0 +1,24 @@
+// __noSuchMethod__ is totally non-standard and evil, but in this one weird case
+// below we don't actually use it.  So this test is bog-standard ES6, not
+// SpiderMonkey-specific.
+//
+// In ES6:
+//   Accessing 1[Symbol.iterator]() throws a TypeError calling |undefined|.
+// In SpiderMonkey:
+//   Accessing 1[Symbol.iterator]() does *not* invoke __noSuchMethod__ looked up
+//   on 1 (or on an implicitly boxed 1), because 1 is a primitive value.
+//   SpiderMonkey then does exactly the ES6 thing here and throws a TypeError
+//   calling |undefined|.
+
+Object.prototype.__noSuchMethod__ = {};
+
+try
+{
+  var [x] = 1;
+  throw new Error("didn't throw");
+}
+catch (e)
+{
+  assertEq(e instanceof TypeError, true,
+           "expected TypeError, got " + e);
+}