// |reftest| async // This file was procedurally generated from the following sources: // - src/dstr-binding/ary-init-iter-no-close.case // - src/dstr-binding/default/async-gen-func-decl.template /*--- description: Iterator is not closed when exhausted by pattern evaluation (async generator function declaration) esid: sec-asyncgenerator-definitions-instantiatefunctionobject features: [Symbol.iterator, async-iteration] flags: [generated, async] info: | AsyncGeneratorDeclaration : async [no LineTerminator here] function * BindingIdentifier ( FormalParameters ) { AsyncGeneratorBody } [...] 3. Let F be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, AsyncGeneratorBody, scope, strict). [...] 13.3.3.5 Runtime Semantics: BindingInitialization BindingPattern : ArrayBindingPattern [...] 4. If iteratorRecord.[[done]] is false, return ? IteratorClose(iterator, result). [...] ---*/ var doneCallCount = 0; var iter = {}; iter[Symbol.iterator] = function() { return { next: function() { return { value: null, done: true }; }, return: function() { doneCallCount += 1; return {}; } }; }; var callCount = 0; async function* f([x]) { assert.sameValue(doneCallCount, 0); callCount = callCount + 1; }; f(iter).next().then(() => { assert.sameValue(callCount, 1, 'invoked exactly once'); }).then($DONE, $DONE);