synapsecns/sanguine

package multibackend

import (
    "context"
    "fmt"
    "github.com/ethereum/go-ethereum/consensus/ethash"
    "github.com/ethereum/go-ethereum/core"
    "github.com/ethereum/go-ethereum/core/state"
    "time"
)

// EmptyBlock mines an empty block at time. Must be greater than previous block time.
func (b *SimulatedBackend) EmptyBlock(blockTime time.Time) {
    // Get the last block
    block, err := b.blockByHash(context.TODO(), b.pendingBlock.ParentHash())
    if err != nil {
        panic("could not fetch parent")
    }

    // create a new chain with the block
    blocks, _ := core.GenerateChain(b.config, block, ethash.NewFaker(), b.database, 1, func(number int, block *core.BlockGen) {
        var prevBlockTime int64
        fmt.Println(block.Number())
        if block.Number().Uint64() != 1 {
            prevBlockTime = int64(block.PrevBlock(-1).Time())
        }
        block.OffsetTime(blockTime.Unix() - prevBlockTime)
    })
    stateDB, _ := b.blockchain.State()

    // add the empty block
    b.pendingBlock = blocks[0]
    b.pendingState, _ = state.New(b.pendingBlock.Root(), stateDB.Database(), nil)
    b.Commit()
}