public void OperateGetUnion()
{
int index_bits = 14;
long expected_union_count = 0;
List <IList> vals = new List <IList>();
IList <Value.HLLValue> hlls = new List <Value.HLLValue>();
for (int i = 0; i < keys.Length; i++)
{
List <Value> sub_vals = new List <Value>();
for (int j = 0; j < n_entries / 3; j++)
{
sub_vals.Add(new Value.StringValue("key" + i + " " + j));
}
Record record = AssertSuccess("init other keys", keys[i], Operation.Delete(), HLLOperation.Add(HLLPolicy.Default, binName, sub_vals, index_bits), Operation.Get(binName));
IList result_list = record.GetList(binName);
hlls.Add((Value.HLLValue)result_list[1]);
expected_union_count += sub_vals.Count;
vals.Add(sub_vals);
}
// Keep record around win binName is removed.
AssertSuccess("other bin", key,
Operation.Delete(),
HLLOperation.Init(HLLPolicy.Default, binName + "other", index_bits),
HLLOperation.Add(HLLPolicy.Default, binName, vals[0], index_bits)
);
Record r = AssertSuccess("union and unionCount", key, HLLOperation.GetUnion(binName, hlls), HLLOperation.GetUnionCount(binName, hlls));
IList rlist = r.GetList(binName);
long union_count = (long)rlist[1];
AssertHLLCount("verify union count", index_bits, union_count, expected_union_count);
Value.HLLValue union_hll = (Value.HLLValue)rlist[0];
r = AssertSuccess("", key, Operation.Put(new Bin(binName, union_hll)), HLLOperation.GetCount(binName));
rlist = r.GetList(binName);
long union_count_2 = (long)rlist[1];
Assert.AreEqual(union_count, union_count_2, "unions equal");
}