// |reftest| async // This file was procedurally generated from the following sources: // - src/dstr-assignment-for-await/obj-prop-elem-init-fn-name-cover.case // - src/dstr-assignment-for-await/default/async-gen-decl.template /*--- description: Assignment of function `name` attribute (CoverParenthesizedExpression) (for-await-of statement in an async generator declaration) esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation features: [destructuring-binding, async-iteration] flags: [generated, async] includes: [propertyHelper.js] info: | IterationStatement : for await ( LeftHandSideExpression of AssignmentExpression ) Statement 1. Let keyResult be the result of performing ? ForIn/OfHeadEvaluation(« », AssignmentExpression, iterate). 2. Return ? ForIn/OfBodyEvaluation(LeftHandSideExpression, Statement, keyResult, assignment, labelSet). 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation [...] 5. If destructuring is true and if lhsKind is assignment, then a. Assert: lhs is a LeftHandSideExpression. b. Let assignmentPattern be the parse of the source text corresponding to lhs using AssignmentPattern as the goal symbol. [...] AssignmentElement[Yield] : DestructuringAssignmentTarget Initializeropt [...] 6. If Initializer is present and v is undefined and IsAnonymousFunctionDefinition(Initializer) and IsIdentifierRef of DestructuringAssignmentTarget are both true, then a. Let hasNameProperty be ? HasOwnProperty(rhsValue, "name"). b. If hasNameProperty is false, perform SetFunctionName(rhsValue, GetReferencedName(lref)). ---*/ let xCover, cover; let iterCount = 0; async function * fn() { for await ({ x: xCover = (0, function() {}), x: cover = (function() {}) } of [{}]) { assert.notSameValue(xCover.name, 'xCover'); verifyProperty(cover, 'name', { enumerable: false, writable: false, configurable: true, value: 'cover' }); iterCount += 1; } } let promise = fn().next(); promise .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE) .then($DONE, $DONE);