non-Strict mode Failing
Expected no error, got SyntaxError: async generators are unsupported
Features:
- arrow-function
- async-functions
- async-iteration
Expected no error, got SyntaxError: async generators are unsupported
// This file was procedurally generated from the following sources:
// - src/function-forms/forbidden-ext-indirect-access-own-prop-caller-value.case
// - src/function-forms/forbidden-extensions/bullet-two/async-gen-func-decl.template
/*---
description: Forbidden extension, o.caller (async generator function declaration)
esid: sec-asyncgenerator-definitions-instantiatefunctionobject
features: [arrow-function, async-functions, async-iteration]
flags: [generated, noStrict, async]
info: |
AsyncGeneratorDeclaration : async [no LineTerminator here] function * BindingIdentifier
( FormalParameters ) { AsyncGeneratorBody }
If an implementation extends any function object with an own property named "caller" the value of
that property, as observed using [[Get]] or [[GetOwnProperty]], must not be a strict function
object. If it is an accessor property, the function that is the value of the property's [[Get]]
attribute must never return a strict function when called.
---*/
var CALLER_OWN_PROPERTY_DOES_NOT_EXIST = Symbol();
function inner() {
// This property may exist, but is forbidden from having a value that is a strict function object
return inner.hasOwnProperty("caller")
? inner.caller
: CALLER_OWN_PROPERTY_DOES_NOT_EXIST;
}
var callCount = 0;
async function* f() {
"use strict";
// This and the following conditional value is set in the test's .case file.
// For every test that has a "true" value here, there is a
// corresponding test that has a "false" value here.
// They are generated from two different case files, which use
// the same templates.
let descriptor = Object.getOwnPropertyDescriptor(inner, "caller");
if (descriptor && descriptor.configurable && true) {
Object.defineProperty(inner, "caller", {value: 1});
}
var result = inner();
if (descriptor && descriptor.configurable && true) {
assert.sameValue(result, 1, 'If this test defined an own "caller" property on the inner function, then it should be accessible and should return the value it was set to.');
}
// "CALLER_OWN_PROPERTY_DOES_NOT_EXIST" is from
// forbidden-ext-indirect-access-prop-caller.case
//
// If the function object "inner" has an own property
// named "caller", then its value will be returned.
//
// If the function object "inner" DOES NOT have an
// own property named "caller", then the symbol
// CALLER_OWN_PROPERTY_DOES_NOT_EXIST will be returned.
if (result !== CALLER_OWN_PROPERTY_DOES_NOT_EXIST) {
assert.notSameValue(result, f);
}
callCount++;
}
f().next()
.then(() => {
assert.sameValue(callCount, 1, 'function body evaluated');
}, $DONE).then($DONE, $DONE);