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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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Add m-esr52 at 52.6.0
Diffstat (limited to 'js/src/jit-test/tests/collections/iterator-noSuchMethod.js')
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diff --git a/js/src/jit-test/tests/collections/iterator-noSuchMethod.js b/js/src/jit-test/tests/collections/iterator-noSuchMethod.js
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+++ 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);
+}