Source code
Revision control
Copy as Markdown
Other Tools
class Base {
constructor(b) {
this.b = b;
}
}
class Derived extends Base {
constructor(a, b) {
super(b);
this.a = a;
}
}
function testSimple() {
var boundCtor = Derived.bind(null, 1);
for (var i = 0; i < 100; i++) {
var o = new boundCtor(2);
assertEq(o.a, 1);
assertEq(o.b, 2);
}
}
testSimple();
function testMegamorphic() {
var ctors = [
function(a, b) { this.a = a; this.b = b; this.c = 1; }.bind(null, 1),
function(a, b) { this.a = a; this.b = b; this.c = 2; }.bind(null, 1),
function(a, b) { this.a = a; this.b = b; this.c = 3; }.bind(null, 1),
function(a, b) { this.a = a; this.b = b; this.c = 4; }.bind(null, 1),
function(a, b) { this.a = a; this.b = b; this.c = 5; }.bind(null, 1),
function(a, b) { this.a = a; this.b = b; this.c = 6; }.bind(null, 1),
function(a, b) { this.a = a; this.b = b; this.c = 7; }.bind(null, 1),
function(a, b) { this.a = a; this.b = b; this.c = 8; }.bind(null, 1),
function(a, b) { this.a = a; this.b = b; this.c = 9; }.bind(null, 1),
function(a, b) { this.a = a; this.b = b; this.c = 10; }.bind(null, 1),
Derived.bind(null, 1),
Derived.bind(null, 1),
];
for (var i = 0; i < 100; i++) {
var ctor = ctors[i % ctors.length];
var o = new ctor(2);
assertEq(o.a, 1);
assertEq(o.b, 2);
}
}
testMegamorphic();