Set-add-size.js (238B)
1 // set.add(v) increments set.size iff the set did not already contain v. 2 3 var s = new Set(); 4 for (var i = 0; i < 10; i++) { 5 assertEq(s.size, i); 6 s.add(i); 7 } 8 for (var i = 0; i < 10; i++) { 9 assertEq(s.size, 10); 10 s.add(i); 11 }