func TestExistsInDescendingInt64Set(t *testing.T) {
s := set.Int64Set{}
s = s.Add(100)
s = s.Add(10)
s = s.Add(1)
for _, v := range []int64{100, 10, 1} {
if !s.Exists(v) {
t.Errorf("expecting value %v to exist in the set", v)
}
}
if !reflect.DeepEqual([]int64(s), []int64{1, 10, 100}) {
t.Error("invalid set")
}
}
