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https://github.com/tc39/test262.git
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18ae34d8f2
Missing coverage encountered while implementing <https://github.com/tc39/ecma262/pull/3307> in SpiderMonkey. Ensure environment lookups are performed in the correct order: - keyed-destructuring-property-reference-target-evaluation-order-with-bindings.js Ensure `delete super[elem]` steps are correctly performed: - delete/super-property-topropertykey.js - delete/super-property-uninitialized-this.js Ensure ToPropertyKey for computed property names in object literals correctly performed: - object/computed-property-name-topropertykey-before-value-evaluation.js Ensure `GetSuperBase` is executed before `ToPropertKey`: - super/prop-expr-getsuperbase-before-topropertykey-* Ensure `GetThisBinding` is executed first: - super/prop-expr-uninitialized-this-*
91 lines
2.0 KiB
JavaScript
91 lines
2.0 KiB
JavaScript
// Copyright (C) 2024 André Bargull. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-runtime-semantics-propertydestructuringassignmentevaluation
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description: >
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Ensure correct evaluation order for binding lookups when destructuring target is var-binding.
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info: |
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13.15.5.3 Runtime Semantics: PropertyDestructuringAssignmentEvaluation
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AssignmentProperty : PropertyName : AssignmentElement
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1. Let name be ? Evaluation of PropertyName.
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2. Perform ? KeyedDestructuringAssignmentEvaluation of AssignmentElement with arguments value and name.
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...
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13.15.5.6 Runtime Semantics: KeyedDestructuringAssignmentEvaluation
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AssignmentElement : DestructuringAssignmentTarget Initializer_opt
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1. If DestructuringAssignmentTarget is neither an ObjectLiteral nor an ArrayLiteral, then
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a. Let lRef be ? Evaluation of DestructuringAssignmentTarget.
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2. Let v be ? GetV(value, propertyName).
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3. If Initializer is present and v is undefined, then
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...
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b. Else,
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i. Let defaultValue be ? Evaluation of Initializer.
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ii. Let rhsValue be ? GetValue(defaultValue).
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...
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6. Return ? PutValue(lRef, rhsValue).
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includes: [compareArray.js]
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features: [Proxy]
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flags: [noStrict]
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---*/
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var log = [];
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var targetKey = {
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toString: () => {
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log.push("targetKey");
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return "q";
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}
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};
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var sourceKey = {
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toString: () => {
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log.push("sourceKey");
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return "p";
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}
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};
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var source = {
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get p() {
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log.push("get source");
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return undefined;
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}
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};
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var target = {
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set q(v) {
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log.push("set target");
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},
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};
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var env = new Proxy({}, {
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has(t, pk) {
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log.push("binding::" + pk);
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}
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});
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var defaultValue = 0;
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with (env) {
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({
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[sourceKey]: target[targetKey] = defaultValue
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} = source);
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}
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assert.compareArray(log, [
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"binding::source",
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"binding::sourceKey",
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"sourceKey",
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"binding::target",
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"binding::targetKey",
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"get source",
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"binding::defaultValue",
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"targetKey",
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"set target",
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]);
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