ipld-eth-server/pkg/geth/blockchain_test.go

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package geth_test
import (
"context"
"math/big"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
vulcCore "github.com/vulcanize/vulcanizedb/pkg/core"
"github.com/vulcanize/vulcanizedb/pkg/fakes"
"github.com/vulcanize/vulcanizedb/pkg/geth"
"github.com/vulcanize/vulcanizedb/pkg/geth/converters/cold_db"
)
var _ = Describe("Geth blockchain", func() {
Describe("getting a block", func() {
It("fetches block from client", func() {
mockClient := fakes.NewMockEthClient()
mockClient.SetBlockByNumberReturnBlock(types.NewBlockWithHeader(&types.Header{}))
node := vulcCore.Node{}
blockChain := geth.NewBlockChain(mockClient, node, cold_db.NewColdDbTransactionConverter())
blockNumber := int64(100)
_, err := blockChain.GetBlockByNumber(blockNumber)
Expect(err).NotTo(HaveOccurred())
mockClient.AssertBlockByNumberCalledWith(context.Background(), big.NewInt(blockNumber))
})
It("returns err if client returns err", func() {
mockClient := fakes.NewMockEthClient()
mockClient.SetBlockByNumberErr(fakes.FakeError)
node := vulcCore.Node{}
blockChain := geth.NewBlockChain(mockClient, node, cold_db.NewColdDbTransactionConverter())
_, err := blockChain.GetBlockByNumber(100)
Expect(err).To(HaveOccurred())
Expect(err).To(MatchError(fakes.FakeError))
})
})
Describe("getting a header", func() {
It("fetches header from client", func() {
mockClient := fakes.NewMockEthClient()
blockNumber := int64(100)
mockClient.SetHeaderByNumberReturnHeader(&types.Header{Number: big.NewInt(blockNumber)})
node := vulcCore.Node{}
blockChain := geth.NewBlockChain(mockClient, node, cold_db.NewColdDbTransactionConverter())
_, err := blockChain.GetHeaderByNumber(blockNumber)
Expect(err).NotTo(HaveOccurred())
mockClient.AssertHeaderByNumberCalledWith(context.Background(), big.NewInt(blockNumber))
})
It("returns err if client returns err", func() {
mockClient := fakes.NewMockEthClient()
mockClient.SetHeaderByNumberErr(fakes.FakeError)
node := vulcCore.Node{}
blockChain := geth.NewBlockChain(mockClient, node, cold_db.NewColdDbTransactionConverter())
_, err := blockChain.GetHeaderByNumber(100)
Expect(err).To(HaveOccurred())
Expect(err).To(MatchError(fakes.FakeError))
})
})
Describe("getting logs", func() {
It("fetches logs from client", func() {
mockClient := fakes.NewMockEthClient()
mockClient.SetFilterLogsReturnLogs([]types.Log{{}})
node := vulcCore.Node{}
blockChain := geth.NewBlockChain(mockClient, node, cold_db.NewColdDbTransactionConverter())
contract := vulcCore.Contract{Hash: common.BytesToHash([]byte{1, 2, 3, 4, 5}).Hex()}
startingBlockNumber := big.NewInt(1)
endingBlockNumber := big.NewInt(2)
_, err := blockChain.GetLogs(contract, startingBlockNumber, endingBlockNumber)
Expect(err).NotTo(HaveOccurred())
expectedQuery := ethereum.FilterQuery{
FromBlock: startingBlockNumber,
ToBlock: endingBlockNumber,
Addresses: []common.Address{common.HexToAddress(contract.Hash)},
}
mockClient.AssertFilterLogsCalledWith(context.Background(), expectedQuery)
})
It("returns err if client returns err", func() {
mockClient := fakes.NewMockEthClient()
mockClient.SetFilterLogsErr(fakes.FakeError)
node := vulcCore.Node{}
blockChain := geth.NewBlockChain(mockClient, node, cold_db.NewColdDbTransactionConverter())
contract := vulcCore.Contract{Hash: common.BytesToHash([]byte{1, 2, 3, 4, 5}).Hex()}
startingBlockNumber := big.NewInt(1)
endingBlockNumber := big.NewInt(2)
_, err := blockChain.GetLogs(contract, startingBlockNumber, endingBlockNumber)
Expect(err).To(HaveOccurred())
Expect(err).To(MatchError(fakes.FakeError))
})
})
Describe("getting the most recent block number", func() {
It("fetches latest header from client", func() {
mockClient := fakes.NewMockEthClient()
blockNumber := int64(100)
mockClient.SetHeaderByNumberReturnHeader(&types.Header{Number: big.NewInt(blockNumber)})
node := vulcCore.Node{}
blockChain := geth.NewBlockChain(mockClient, node, cold_db.NewColdDbTransactionConverter())
result := blockChain.LastBlock()
mockClient.AssertHeaderByNumberCalledWith(context.Background(), nil)
Expect(result).To(Equal(big.NewInt(blockNumber)))
})
})
})