array-elem-trlg-iter-list-nrml-close-err.js (1794B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-assignment/array-elem-trlg-iter-list-nrml-close-err.case 3 // - src/dstr-assignment/error/assignment-expr.template 4 /*--- 5 description: Abrupt completion returned from IteratorClose (AssignmentExpression) 6 esid: sec-variable-statement-runtime-semantics-evaluation 7 features: [Symbol.iterator, destructuring-binding] 8 flags: [generated] 9 info: | 10 VariableDeclaration : BindingPattern Initializer 11 12 1. Let rhs be the result of evaluating Initializer. 13 2. Let rval be GetValue(rhs). 14 3. ReturnIfAbrupt(rval). 15 4. Return the result of performing BindingInitialization for 16 BindingPattern passing rval and undefined as arguments. 17 18 ArrayAssignmentPattern : 19 [ AssignmentElementList , Elisionopt AssignmentRestElementopt ] 20 21 [...] 22 3. Let iteratorRecord be Record {[[iterator]]: iterator, [[done]]: false}. 23 4. Let status be the result of performing 24 IteratorDestructuringAssignmentEvaluation of AssignmentElementList using 25 iteratorRecord as the argument. 26 5. If status is an abrupt completion, then 27 a. If iteratorRecord.[[done]] is false, return IteratorClose(iterator, 28 status). 29 b. Return Completion(status). 30 31 ---*/ 32 var nextCount = 0; 33 var returnCount = 0; 34 var iterable = {}; 35 var thrower = function() { 36 throw new Test262Error(); 37 }; 38 var x; 39 var iterator = { 40 next: function() { 41 nextCount += 1; 42 return { done: nextCount > 10 }; 43 }, 44 return: function() { 45 returnCount += 1; 46 throw new Test262Error(); 47 } 48 }; 49 iterable[Symbol.iterator] = function() { 50 return iterator; 51 }; 52 53 assert.throws(Test262Error, function() { 54 0, [ x , ] = iterable; 55 }); 56 57 assert.sameValue(nextCount, 1); 58 assert.sameValue(returnCount, 1); 59 60 reportCompare(0, 0);