8023368: Instance __proto__ property should exist and be writable.
Reviewed-by: attila, hannesw
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/**
* NASHORN-416 : Setting setter method using defineProperty erases old getter method
*
* @test
* @run
*/
var obj = {}
function getter() { return 32; }
Object.defineProperty(obj, "foo",
{ get: getter, configurable: true });
function setter(x) { print(x); }
Object.defineProperty(obj, "foo",
{ set: setter });
var desc = Object.getOwnPropertyDescriptor(obj, "foo");
if (desc.get !== getter) {
fail("desc.get !== getter");
}
if (desc.set !== setter) {
fail("desc.set !== setter");
}