michael@0: function f (v, i) {
michael@0:     var c = v[i];
michael@0:     switch (c) {
michael@0:     case 0:
michael@0:         assertEq(v[i], 0);
michael@0:         break;
michael@0:     case 1:
michael@0:         assertEq(v[i], 1);
michael@0:         break;
michael@0:     default:
michael@0:         assertEq(c === 0 || c === 1, false);
michael@0:     }
michael@0: }
michael@0: 
michael@0: var v = [
michael@0:   0, 0.0, 0.1, 1, 1.0, 1.1,
michael@0:   null, undefined, true, false, {}, "", "0", "1",
michael@0:   { valueOf: function () { return 0; } },
michael@0:   { valueOf: function () { return 1; } }
michael@0: ];
michael@0: for (var i = 0; i < 100; i++)
michael@0:     f(v, i % v.length);