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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
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diff --git a/js/src/jit-test/tests/debug/Object-preventExtensions-01.js b/js/src/jit-test/tests/debug/Object-preventExtensions-01.js
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+// Basic preventExtensions test.
+
+var g = newGlobal();
+var obj = g.eval("({x: 1})");
+assertEq(g.Object.isExtensible(obj), true);
+
+var dbg = new Debugger;
+var gw = dbg.addDebuggee(g);
+var objw = gw.makeDebuggeeValue(obj);
+assertEq(objw.isExtensible(), true);
+
+assertEq(objw.preventExtensions(), undefined);
+assertEq(g.Object.isExtensible(obj), false);
+assertEq(objw.isExtensible(), false);
+
+// Calling preventExtensions again has no effect.
+assertEq(objw.preventExtensions(), undefined);