non-Strict mode Failing
Expected no error, got SyntaxError: Invalid expression encountered
Features:
- class
Expected no error, got SyntaxError: Invalid expression encountered
// This file was procedurally generated from the following sources:
// - src/function-forms/forbidden-ext-indirect-access-own-prop-caller-get.case
// - src/function-forms/forbidden-extensions/bullet-two/cls-expr-meth.template
/*---
description: Forbidden extension, o.caller (class expression method)
esid: sec-class-definitions-runtime-semantics-evaluation
features: [class]
flags: [generated, noStrict]
info: |
ClassExpression : class BindingIdentifieropt ClassTail
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;
var C = class {
method() {
/* implicit 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
let descriptor = Object.getOwnPropertyDescriptor(inner, "caller");
if (descriptor && descriptor.configurable && true) {
Object.defineProperty(inner, "caller", {get(){return 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, this.method);
}
callCount++;
}
};
C.prototype.method();
assert.sameValue(callCount, 1, 'method body evaluated');