spread-obj-override-immutable.js (1468B)
1 // This file was procedurally generated from the following sources: 2 // - src/spread/obj-override-immutable.case 3 // - src/spread/default/array.template 4 /*--- 5 description: Object Spread overriding immutable properties (Array initializer) 6 esid: sec-runtime-semantics-arrayaccumulation 7 features: [object-spread] 8 flags: [generated] 9 includes: [propertyHelper.js] 10 info: | 11 SpreadElement : ...AssignmentExpression 12 13 1. Let spreadRef be the result of evaluating AssignmentExpression. 14 2. Let spreadObj be ? GetValue(spreadRef). 15 3. Let iterator be ? GetIterator(spreadObj). 16 4. Repeat 17 a. Let next be ? IteratorStep(iterator). 18 b. If next is false, return nextIndex. 19 c. Let nextValue be ? IteratorValue(next). 20 d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)), 21 nextValue). 22 e. Assert: status is true. 23 f. Let nextIndex be nextIndex + 1. 24 ---*/ 25 26 let o = {b: 2}; 27 Object.defineProperty(o, "a", {value: 1, enumerable: true, writable: false, configurable: true}); 28 29 30 var callCount = 0; 31 32 (function(obj) { 33 assert.sameValue(obj.a, 3) 34 assert.sameValue(obj.b, 2); 35 36 verifyProperty(obj, "a", { 37 enumerable: true, 38 writable: true, 39 configurable: true, 40 value: 3 41 }); 42 43 verifyProperty(obj, "b", { 44 enumerable: true, 45 writable: true, 46 configurable: true, 47 value: 2 48 }); 49 callCount += 1; 50 }.apply(null, [{...o, a: 3}])); 51 52 assert.sameValue(callCount, 1); 53 54 reportCompare(0, 0);