call-spread-obj-overrides-prev-properties.js (1499B)
1 // This file was procedurally generated from the following sources: 2 // - src/spread/obj-overrides-prev-properties.case 3 // - src/spread/default/super-call.template 4 /*--- 5 description: Object Spread properties overrides previous definitions (SuperCall) 6 esid: sec-super-keyword-runtime-semantics-evaluation 7 features: [object-spread] 8 flags: [generated] 9 info: | 10 SuperCall : super Arguments 11 12 1. Let newTarget be GetNewTarget(). 13 2. If newTarget is undefined, throw a ReferenceError exception. 14 3. Let func be GetSuperConstructor(). 15 4. ReturnIfAbrupt(func). 16 5. Let argList be ArgumentListEvaluation of Arguments. 17 [...] 18 19 Pending Runtime Semantics: PropertyDefinitionEvaluation 20 21 PropertyDefinition:...AssignmentExpression 22 23 1. Let exprValue be the result of evaluating AssignmentExpression. 24 2. Let fromValue be GetValue(exprValue). 25 3. ReturnIfAbrupt(fromValue). 26 4. Let excludedNames be a new empty List. 27 5. Return CopyDataProperties(object, fromValue, excludedNames). 28 29 ---*/ 30 let o = {a: 2, b: 3}; 31 32 33 var callCount = 0; 34 35 class Test262ParentClass { 36 constructor(obj) { 37 assert.sameValue(obj.a, 2); 38 assert.sameValue(obj.b, 3); 39 assert.sameValue(Object.keys(obj).length, 2); 40 assert.sameValue(o.a, 2); 41 assert.sameValue(o.b, 3); 42 callCount += 1; 43 } 44 } 45 46 class Test262ChildClass extends Test262ParentClass { 47 constructor() { 48 super({a: 1, b: 7, ...o}); 49 } 50 } 51 52 new Test262ChildClass(); 53 assert.sameValue(callCount, 1); 54 55 reportCompare(0, 0);