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function checkPrototype(fun, proto, resolvesPrototype) {
var desc = Object.getOwnPropertyDescriptor(fun, "prototype");
assertEq(desc.value, proto);
assertEq(desc.configurable, !resolvesPrototype);
assertEq(desc.enumerable, !resolvesPrototype);
assertEq(desc.writable, true);
}
function addPrototype(fun, proto, resolvesPrototype) {
fun.prototype = proto;
checkPrototype(fun, proto, resolvesPrototype);
}
function test() {
for (var i=0; i<50; i++) {
addPrototype(function() {}, i, true);
addPrototype(function*() {}, i, true);
addPrototype(function async() {}, i, true);
// Builtins, arrow functions, bound functions don't have a default
// prototype property.
addPrototype(Math.abs, i, false);
addPrototype(Array.prototype.map, i, false);
addPrototype(() => 1, i, false);
addPrototype((function() {}).bind(null), i, false);
}
// Now test this with a different IC for each function type.
for (var i=0; i<50; i++) {
var f = function() {};
f.prototype = i;
checkPrototype(f, i, true);
f = function*() {};
f.prototype = i;
checkPrototype(f, i, true);
f = function async() {};
f.prototype = i;
checkPrototype(f, i, true);
Math.sin.prototype = i;
checkPrototype(Math.sin, i, false);
Array.prototype.filter.prototype = i;
checkPrototype(Array.prototype.filter, i, false);
f = () => 1;
f.prototype = i;
checkPrototype(f, i, false);
f = (function() {}).bind(null);
f.prototype = i;
checkPrototype(f, i, false);
}
}
test();
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