mirror of https://github.com/tc39/test262.git
55 lines
1.6 KiB
JavaScript
55 lines
1.6 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/spread/obj-mult-spread-getter.case
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// - src/spread/default/array.template
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/*---
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description: Multiple Object Spread usage calls getter multiple times (Array initializer)
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esid: sec-runtime-semantics-arrayaccumulation
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es6id: 12.2.5.2
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features: [object-spread]
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flags: [generated]
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info: |
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SpreadElement : ...AssignmentExpression
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1. Let spreadRef be the result of evaluating AssignmentExpression.
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2. Let spreadObj be ? GetValue(spreadRef).
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3. Let iterator be ? GetIterator(spreadObj).
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4. Repeat
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a. Let next be ? IteratorStep(iterator).
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b. If next is false, return nextIndex.
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c. Let nextValue be ? IteratorValue(next).
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d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
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nextValue).
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e. Assert: status is true.
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f. Let nextIndex be nextIndex + 1.
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Pending Runtime Semantics: PropertyDefinitionEvaluation
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PropertyDefinition:...AssignmentExpression
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1. Let exprValue be the result of evaluating AssignmentExpression.
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2. Let fromValue be GetValue(exprValue).
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3. ReturnIfAbrupt(fromValue).
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4. Let excludedNames be a new empty List.
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5. Return CopyDataProperties(object, fromValue, excludedNames).
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---*/
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let getterCallCount = 0;
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let o = {
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get a() {
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return ++getterCallCount;
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}
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};
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var callCount = 0;
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(function(obj) {
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assert.sameValue(obj.a, 2);
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assert.sameValue(obj.c, 4);
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assert.sameValue(obj.d, 5);
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assert.sameValue(Object.keys(obj).length, 3);
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callCount += 1;
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}.apply(null, [{...o, c: 4, d: 5, a: 42, ...o}]));
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assert.sameValue(callCount, 1);
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