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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.
35 // Try defining with null as descriptor:
37 Object.defineProperties({}, null);
39 assertTrue(/null to object/.test(e));
42 // Try defining with null as object
44 Object.defineProperties(null, {});
46 assertTrue(/called on non-object/.test(e));
50 var desc = {foo: {value: 10}, bar: {get: function() {return 42; }}};
52 // Check that we actually get the object back as returnvalue
53 var x = Object.defineProperties(obj, desc);
55 assertEquals(x.foo, 10);
56 assertEquals(x.bar, 42);
59 // Make sure that all property descriptors are calculated before any
60 // modifications are done.
64 assertThrows(function() {
65 Object.defineProperties(object, {
67 bar: { value: 2, get: function() { return 3; } }
71 assertEquals(undefined, object.foo);
72 assertEquals(undefined, object.bar);