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function testUndefinedBooleanCmp()
{
var t = true, f = false, x = [];
for (var i = 0; i < 10; ++i) {
x[0] = t == undefined;
x[1] = t != undefined;
x[2] = t === undefined;
x[3] = t !== undefined;
x[4] = t < undefined;
x[5] = t > undefined;
x[6] = t <= undefined;
x[7] = t >= undefined;
x[8] = f == undefined;
x[9] = f != undefined;
x[10] = f === undefined;
x[11] = f !== undefined;
x[12] = f < undefined;
x[13] = f > undefined;
x[14] = f <= undefined;
x[15] = f >= undefined;
}
return x.join(",");
}
assertEq(testUndefinedBooleanCmp(), "false,true,false,true,false,false,false,false,false,true,false,true,false,false,false,false");