NASHORN-428.js revision 2:da1e581c933b 
1/*
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22 */
23
24/**
25 * NASHORN-428 : Redefining a non-configurable property with the "same value" is permitted, but -0.0 and +0.0 are not "same value"
26 *
27 * @test
28 * @run
29 */
30
31var obj = {};
32
33Object.defineProperty(obj, "0", {
34    value: -0,
35    configurable: false
36});
37
38try {
39    Object.defineProperties(obj, {
40        "0": { value: +0 }
41    });
42    fail("#1 expected TypeError");
43} catch (e) {
44    if (! (e instanceof TypeError)) {
45        fail("#2 expected TypeError, got " + e);
46    }
47}
48
49// -0 should be fine.. should not throw any TypeError
50Object.defineProperties(obj, {
51    "0": { value: -0 }
52});
53
54