blob: 0bf1cfb54acf21fd5ab101b663303ef40467246c [file] [log] [blame]
function assert(b) {
if (!b)
throw new Error("bad assertion");
}
// Currently, only "get", "getOwnPropertyDescriptor", and "set" are testable.
{
let theTarget = [];
let sawPrivateSymbolAsString = false;
let handler = {
get: function(target, propName, proxyArg) {
if (typeof propName === "string")
sawPrivateSymbolAsString = propName === "PrivateSymbol.arrayIterationKind";
return target[propName];
}
};
let proxy = new Proxy(theTarget, handler);
for (let i = 0; i < 100; i++) {
let threw = false;
try {
proxy[Symbol.iterator]().next.call(proxy);
} catch(e) {
// this will throw because we convert private symbols to strings.
assert(e.message === "%ArrayIteratorPrototype%.next requires that |this| be an Array Iterator instance");
threw = true;
}
assert(threw);
assert(!sawPrivateSymbolAsString);
sawPrivateSymbolAsString = false;
}
}
{
let theTarget = [];
let sawPrivateSymbolAsString = false;
let handler = {
getOwnPropertyDescriptor: function(theTarget, propName) {
if (typeof propName === "string")
sawPrivateSymbolAsString = propName === "PrivateSymbol.arrayIterationKind";
return target[propName];
}
};
let proxy = new Proxy(theTarget, handler);
for (let i = 0; i < 100; i++) {
let threw = false;
try {
proxy[Symbol.iterator]().next.call(proxy);
} catch(e) {
// this will throw because we convert private symbols to strings.
assert(e.message === "%ArrayIteratorPrototype%.next requires that |this| be an Array Iterator instance");
threw = true;
}
assert(threw);
assert(!sawPrivateSymbolAsString);
sawPrivateSymbolAsString = false;
}
}
{
let theTarget = [1,2,3,4,5];
let iterator = theTarget[Symbol.iterator]();
let sawPrivateSymbolAsString = false;
let handler = {
set: function(theTarget, propName, value, receiver) {
if (typeof propName === "string")
sawPrivateSymbolAsString = propName === "PrivateSymbol.arrayIterationKind";
return target[propName];
}
};
let proxy = new Proxy(iterator, handler);
for (let i = 0; i < 100; i++) {
let threw = false;
try {
proxy.next();
} catch(e) {
// this will throw because we convert private symbols to strings.
assert(e.message === "%ArrayIteratorPrototype%.next requires that |this| be an Array Iterator instance");
threw = true;
}
assert(!threw);
assert(!sawPrivateSymbolAsString);
sawPrivateSymbolAsString = false;
}
}