/************************************************************************
 *
 * Copyright (c) 2017 Alibaba.com, Inc. All Rights Reserved
 * $Id:  paxos_log_cache-t.cc,v 1.0 01/17/2017 06:57:45 PM yingqiang.zyq(yingqiang.zyq@alibaba-inc.com) $
 *
 ************************************************************************/

/**
 * @file paxos_log_cache-t.cc
 * @author yingqiang.zyq(yingqiang.zyq@alibaba-inc.com)
 * @date 01/17/2017 06:57:45 PM
 * @version 1.0
 * @brief 
 *
 **/

#include <gtest/gtest.h>

#include "paxos_log_cache.h"


using namespace alisql;

::google::protobuf::RepeatedPtrField<LogEntry> makeEntries(uint64_t bi, uint64_t ei)
{
  ::google::protobuf::RepeatedPtrField<LogEntry> les;

  LogEntry le;
  le.set_term(1);
  le.set_optype(1);

  for (uint64_t i= bi; i <= ei; ++i)
  {
    le.set_index(i);
    *(les.Add())= le;
  }

  return les;
}

TEST(PaxosLogCacheNode, t1)
{
  PaxosLogCache cache;
  PaxosLogCacheNode *node;

  auto t1= makeEntries(2, 4);
  cache.put(2, 4, t1);
  EXPECT_EQ(cache.getByteSize(), cache.debugGetByteSize());

  auto t2= makeEntries(7, 9);
  cache.put(7, 9, t2);
  EXPECT_EQ(cache.getByteSize(), cache.debugGetByteSize());

  node= cache.debugGet(0);
  EXPECT_EQ(node->beginIndex, 2);
  EXPECT_EQ(node->endIndex, 4);
  EXPECT_EQ(node->entries.size(), 3);
  EXPECT_EQ(node->entries.begin()->index(), 2);
  EXPECT_EQ(cache.getByteSize(), cache.debugGetByteSize());

  node= cache.debugGet(1);
  EXPECT_EQ(node->beginIndex, 7);
  EXPECT_EQ(node->endIndex, 9);
  EXPECT_EQ(node->entries.size(), 3);
  EXPECT_EQ(node->entries.begin()->index(), 7);
  EXPECT_EQ(cache.getByteSize(), cache.debugGetByteSize());


  auto t3= makeEntries(6, 8);
  cache.put(6, 8, t3);
  EXPECT_EQ(cache.getByteSize(), cache.debugGetByteSize());


  node= cache.debugGet(1);
  EXPECT_EQ(node->beginIndex, 6);
  EXPECT_EQ(node->endIndex, 9);
  EXPECT_EQ(node->entries.size(), 4);
  EXPECT_EQ(node->entries.begin()->index(), 6);
  EXPECT_EQ(cache.getByteSize(), cache.debugGetByteSize());

  node= cache.get(1);
  EXPECT_EQ(node == NULL, true);
  EXPECT_EQ(cache.getByteSize(), cache.debugGetByteSize());

  node= cache.get(3);
  EXPECT_EQ(node->beginIndex, 3);
  EXPECT_EQ(node->endIndex, 4);
  EXPECT_EQ(node->entries.size(), 2);
  EXPECT_EQ(node->entries.begin()->index(), 3);
  EXPECT_EQ(cache.getByteSize(), cache.debugGetByteSize());

  auto t5= makeEntries(13, 15);
  cache.put(13, 15, t5);
  EXPECT_EQ(cache.getByteSize(), cache.debugGetByteSize());

  node= cache.get(12);
  EXPECT_EQ(node == NULL, true);
  EXPECT_EQ(cache.getByteSize(), cache.debugGetByteSize());

  node= cache.debugGet(0);
  EXPECT_EQ(node->beginIndex, 13);
  EXPECT_EQ(node->endIndex, 15);
  EXPECT_EQ(node->entries.size(), 3);
  EXPECT_EQ(node->entries.begin()->index(), 13);
  EXPECT_EQ(cache.getByteSize(), cache.debugGetByteSize());

  auto t4= makeEntries(17, 19);
  cache.put(17, 19, t4);
  EXPECT_EQ(cache.getByteSize(), cache.debugGetByteSize());

  node= cache.get(17);
  EXPECT_EQ(node->beginIndex, 17);
  EXPECT_EQ(node->endIndex, 19);
  EXPECT_EQ(node->entries.size(), 3);
  EXPECT_EQ(node->entries.begin()->index(), 17);
  EXPECT_EQ(cache.getByteSize(), cache.debugGetByteSize());

  node= cache.debugGet(0);
  EXPECT_EQ(node == NULL, true);
  EXPECT_EQ(cache.getByteSize(), cache.debugGetByteSize());

  auto t6= makeEntries(21, 21);
  cache.put(21, 21, t6);
  EXPECT_EQ(cache.getByteSize(), cache.debugGetByteSize());
  auto t7= makeEntries(22, 22);
  cache.put(22, 22, t7);
  EXPECT_EQ(cache.getByteSize(), cache.debugGetByteSize());

  node= cache.debugGet(0);
  EXPECT_EQ(node->beginIndex, 21);
  EXPECT_EQ(node->endIndex, 22);
  EXPECT_EQ(node->entries.size(), 2);
  EXPECT_EQ(node->entries.begin()->index(), 21);
  EXPECT_EQ(cache.getByteSize(), cache.debugGetByteSize());

  auto t8= makeEntries(20, 20);
  cache.put(20, 20, t8);
  EXPECT_EQ(cache.getByteSize(), cache.debugGetByteSize());

  node= cache.debugGet(0);
  EXPECT_EQ(node->beginIndex, 20);
  EXPECT_EQ(node->endIndex, 22);
  EXPECT_EQ(node->entries.size(), 3);
  EXPECT_EQ(node->entries.begin()->index(), 20);
  EXPECT_EQ(cache.getByteSize(), cache.debugGetByteSize());
  // print 0 if WITH_DEBUG_LOG_CACHE is OFF
  std::cout << "Cache ByteSize: " << cache.getByteSize() << std::endl;

  node= cache.get(1000); // will return null and clear all cache
  EXPECT_TRUE(node == NULL);
  EXPECT_EQ(cache.getByteSize(), 0);

  auto t9= makeEntries(2, 4);
  cache.put(2, 4, t9);
  EXPECT_EQ(cache.getByteSize(), cache.debugGetByteSize());

  cache.clear();
  EXPECT_EQ(cache.getByteSize(), 0);
}