# beacon_chain
# Copyright (c) 2018-2019 Status Research & Development GmbH
# Licensed and distributed under either of
#   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
#   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed except according to those terms.

import
  os, algorithm, strformat, stats, times, tables, std/monotimes, stew/endians2,
  testutils/markdown_reports, chronicles,
  ../beacon_chain/[beacon_chain_db, extras, ssz],
  ../beacon_chain/spec/[digest, beaconstate, datatypes, presets],
  ../beacon_chain/block_pools/chain_dag,
  eth/db/[kvstore, kvstore_sqlite3],
  testblockutil

export testblockutil

proc makeTestDB*(tailState: BeaconState, tailBlock: SignedBeaconBlock): BeaconChainDB =
  result = BeaconChainDB.init(defaultRuntimePreset, "", inMemory = true)
  ChainDAGRef.preInit(result, tailState, tailState, tailBlock)

proc makeTestDB*(validators: Natural): BeaconChainDB =
  let
    genState = initialize_beacon_state_from_eth1(
      defaultRuntimePreset,
      Eth2Digest(),
      0,
      makeInitialDeposits(validators.uint64, flags = {skipBlsValidation}),
      {skipBlsValidation})
    genBlock = get_initial_beacon_block(genState[])
  makeTestDB(genState[], genBlock)