diff options
Diffstat (limited to 'js/src/tests/test262/language/statements/async-generator/dstr/dflt-ary-ptrn-elem-ary-rest-init.js')
-rw-r--r-- | js/src/tests/test262/language/statements/async-generator/dstr/dflt-ary-ptrn-elem-ary-rest-init.js | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/async-generator/dstr/dflt-ary-ptrn-elem-ary-rest-init.js b/js/src/tests/test262/language/statements/async-generator/dstr/dflt-ary-ptrn-elem-ary-rest-init.js new file mode 100644 index 0000000000..52d1b56404 --- /dev/null +++ b/js/src/tests/test262/language/statements/async-generator/dstr/dflt-ary-ptrn-elem-ary-rest-init.js @@ -0,0 +1,47 @@ +// |reftest| async +// This file was procedurally generated from the following sources: +// - src/dstr-binding/ary-ptrn-elem-ary-rest-init.case +// - src/dstr-binding/default/async-gen-func-decl-dflt.template +/*--- +description: BindingElement with array binding pattern and initializer is used (async generator function declaration (default parameter)) +esid: sec-asyncgenerator-definitions-instantiatefunctionobject +features: [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 + + BindingElement : BindingPatternInitializer opt + + [...] + 2. If iteratorRecord.[[done]] is true, let v be undefined. + 3. If Initializer is present and v is undefined, then + a. Let defaultValue be the result of evaluating Initializer. + b. Let v be ? GetValue(defaultValue). + 4. Return the result of performing BindingInitialization of BindingPattern + with v and environment as the arguments. +---*/ +var values = [2, 1, 3]; + + +var callCount = 0; +async function* f([[...x] = values] = []) { + assert(Array.isArray(x)); + assert.sameValue(x[0], 2); + assert.sameValue(x[1], 1); + assert.sameValue(x[2], 3); + assert.sameValue(x.length, 3); + assert.notSameValue(x, values); + callCount = callCount + 1; +}; +f().next().then(() => { + assert.sameValue(callCount, 1, 'invoked exactly once'); +}).then($DONE, $DONE); |