forked from cerc-io/ipld-eth-server
105 lines
2.9 KiB
Go
105 lines
2.9 KiB
Go
package core_test
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import (
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"math/big"
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"fmt"
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"github.com/8thlight/vulcanizedb/core"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/jmoiron/sqlx"
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_ "github.com/lib/pq"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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)
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const (
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host = "localhost"
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port = 5432
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user = "postgres"
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password = "postgres"
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dbname = "vulcanize"
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)
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var _ = Describe("Saving blocks to the database", func() {
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var db *sqlx.DB
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var err error
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var gethTransaction *types.Transaction
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BeforeEach(func() {
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blockName := []byte("0x28f9a8d33109c87bda4a9ea890792421c710fe1c")
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addr := common.BytesToAddress(blockName)
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nonce := uint64(18848)
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amt := big.NewInt(0)
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gasLimit := big.NewInt(0)
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gasPrice := big.NewInt(0)
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data := []byte{}
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gethTransaction = types.NewTransaction(nonce, addr, amt, gasLimit, gasPrice, data)
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pgConfig := fmt.Sprintf(
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"host=%s port=%d user=%s password=%s dbname=%s sslmode=disable",
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host, port, user, password, dbname)
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db, err = sqlx.Connect("postgres", pgConfig)
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db.MustExec("DELETE FROM blocks")
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})
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It("implements the observer interface", func() {
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var observer core.BlockchainObserver = core.BlockchainDBObserver{Db: db}
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Expect(observer).NotTo(BeNil())
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})
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It("connects to the database", func() {
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Expect(err).Should(BeNil())
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Expect(db).ShouldNot(BeNil())
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})
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It("starts with no blocks", func() {
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var count int
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queryError := db.Get(&count, "SELECT COUNT(*) FROM blocks")
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Expect(queryError).Should(BeNil())
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Expect(count).Should(Equal(0))
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})
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It("inserts a block", func() {
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// setup a block in memory
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blockNumber := big.NewInt(1)
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gasLimit := big.NewInt(1000000)
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gasUsed := big.NewInt(10)
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blockTime := big.NewInt(1508981640)
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block := core.Block{Number: blockNumber, GasLimit: gasLimit, GasUsed: gasUsed, Time: blockTime}
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// save the block to the database
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observer := core.BlockchainDBObserver{Db: db}
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observer.NotifyBlockAdded(block)
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// find the saved block
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rows, err := db.Query("SELECT block_number, block_gaslimit, block_gasused, block_time FROM blocks")
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Expect(err).To(BeNil())
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var savedBlocks []core.Block
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for rows.Next() {
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var blockNumber int64
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var blockTime float64
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var gasLimit float64
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var gasUsed float64
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rows.Scan(&blockNumber, &gasLimit, &gasUsed, &blockTime)
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savedBlock := core.Block{
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GasUsed: big.NewInt(int64(gasUsed)),
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GasLimit: big.NewInt(int64(gasLimit)),
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Number: big.NewInt(blockNumber),
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Time: big.NewInt(int64(blockTime)),
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}
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savedBlocks = append(savedBlocks, savedBlock)
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}
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// assert against the attributes
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Expect(len(savedBlocks)).To(Equal(1))
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Expect(savedBlocks[0].Number.Int64()).To(Equal(blockNumber.Int64()))
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Expect(savedBlocks[0].GasLimit.Int64()).To(Equal(gasLimit.Int64()))
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Expect(savedBlocks[0].GasUsed.Int64()).To(Equal(gasUsed.Int64()))
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Expect(savedBlocks[0].Time).To(Equal(blockTime))
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})
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})
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