func TestIteratorOptions_MergeSorted(t *testing.T) {
opt := influxql.IteratorOptions{}
sorted := opt.MergeSorted()
if !sorted {
t.Error("expected no expression to be sorted, got unsorted")
}
opt.Expr = &influxql.VarRef{}
sorted = opt.MergeSorted()
if !sorted {
t.Error("expected expression with varref to be sorted, got unsorted")
}
opt.Expr = &influxql.Call{}
sorted = opt.MergeSorted()
if sorted {
t.Error("expected expression without varref to be unsorted, got sorted")
}
}
