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27
28// Tests the Object.defineProperties method - ES 15.2.3.7
29// Note that the internal DefineOwnProperty method is tested through
30// object-define-property.js, this file only contains tests specific for
31// Object.defineProperties. Also note that object-create.js contains
32// a range of indirect tests on this method since Object.create uses
33// Object.defineProperties as a step in setting up the object.
34
35// Try defining with null as descriptor:
36try {
37  Object.defineProperties({}, null);
38} catch(e) {
39  assertTrue(/null to object/.test(e));
40}
41
42// Try defining with null as object
43try {
44  Object.defineProperties(null, {});
45} catch(e) {
46  assertTrue(/called on non-object/.test(e));
47}
48
49
50var desc = {foo: {value: 10}, bar: {get: function() {return 42; }}};
51var obj = {};
52// Check that we actually get the object back as returnvalue
53var x = Object.defineProperties(obj, desc);
54
55assertEquals(x.foo, 10);
56assertEquals(x.bar, 42);
57
58
59// Make sure that all property descriptors are calculated before any
60// modifications are done.
61
62var object = {};
63
64assertThrows(function() {
65    Object.defineProperties(object, {
66      foo: { value: 1 },
67      bar: { value: 2, get: function() { return 3; } }
68    });
69  }, TypeError);
70
71assertEquals(undefined, object.foo);
72assertEquals(undefined, object.bar);
73