michael@0: 
michael@0: var C1 = 1;
michael@0: var C2 = 2;
michael@0: const C3 = 3;
michael@0: 
michael@0: function f(x) {
michael@0:     var s = "";
michael@0: 
michael@0:     switch(x) {
michael@0:     case C1:
michael@0:         s += "1";
michael@0:     case C2:
michael@0:         s += "2";
michael@0:         break;
michael@0:     case C3:
michael@0:         s += "3";
michael@0:     default:
michael@0:         s += "d";
michael@0:     case 4:
michael@0:         s += "4";
michael@0:     }
michael@0:     return s;
michael@0: }
michael@0: assertEq(f(1), "12");
michael@0: assertEq(f(2), "2");
michael@0: assertEq(f(3), "3d4");
michael@0: assertEq(f(4), "4");
michael@0: 
michael@0: assertEq(f(0), "d4");
michael@0: assertEq(f(-0), "d4");
michael@0: 
michael@0: assertEq(f(true), "d4");
michael@0: