async-gen-dstr-var-ary-ptrn-elem-id-init-unresolvable.js (2213B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/dstr-binding-for-await/ary-ptrn-elem-id-init-unresolvable.case 4 // - src/dstr-binding-for-await/error/for-await-of-async-gen-var.template 5 /*--- 6 description: Destructuring initializer is an unresolvable reference (for-await-of statement) 7 esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation 8 features: [destructuring-binding, async-iteration] 9 flags: [generated, async] 10 info: | 11 IterationStatement : 12 for await ( ForDeclaration of AssignmentExpression ) Statement 13 14 [...] 15 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult, 16 lexicalBinding, labelSet, async). 17 18 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation 19 20 [...] 21 4. Let destructuring be IsDestructuring of lhs. 22 [...] 23 6. Repeat 24 [...] 25 j. If destructuring is false, then 26 [...] 27 k. Else 28 i. If lhsKind is assignment, then 29 [...] 30 ii. Else if lhsKind is varBinding, then 31 [...] 32 iii. Else, 33 1. Assert: lhsKind is lexicalBinding. 34 2. Assert: lhs is a ForDeclaration. 35 3. Let status be the result of performing BindingInitialization 36 for lhs passing nextValue and iterationEnv as arguments. 37 [...] 38 39 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 40 41 SingleNameBinding : BindingIdentifier Initializer_opt 42 43 [...] 44 5. If Initializer is present and v is undefined, then 45 a. Let defaultValue be the result of evaluating Initializer. 46 b. Set v to ? GetValue(defaultValue). 47 48 6.2.4.1 GetValue ( V ) 49 50 1. ReturnIfAbrupt(V). 51 2. If Type(V) is not Reference, return V. 52 3. Let base be GetBase(V). 53 4. If IsUnresolvableReference(V), throw a ReferenceError exception. 54 ---*/ 55 56 async function * gen() { 57 for await (var [ x = unresolvableReference ] of [[]]) { 58 return; 59 } 60 } 61 62 gen().next() 63 .then(_ => { 64 throw new Test262Error("Expected async function to reject, but resolved."); 65 }, ({ constructor }) => { 66 assert.sameValue(constructor, ReferenceError); 67 68 }) 69 .then($DONE, $DONE);