| // This file was procedurally generated from the following sources: |
| // - src/dstr-binding/ary-ptrn-empty.case |
| // - src/dstr-binding/default/async-gen-func-decl.template |
| /*--- |
| description: No iteration occurs for an "empty" array binding pattern (async generator function declaration) |
| esid: sec-asyncgenerator-definitions-instantiatefunctionobject |
| features: [generators, 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). |
| [...] |
| |
| |
| 13.3.3.6 Runtime Semantics: IteratorBindingInitialization |
| |
| ArrayBindingPattern : [ ] |
| |
| 1. Return NormalCompletion(empty). |
| |
| ---*/ |
| var iterations = 0; |
| var iter = function*() { |
| iterations += 1; |
| }(); |
| |
| |
| var callCount = 0; |
| async function* f([]) { |
| assert.sameValue(iterations, 0); |
| callCount = callCount + 1; |
| }; |
| f(iter).next().then(() => { |
| assert.sameValue(callCount, 1, 'invoked exactly once'); |
| }).then($DONE, $DONE); |