Add timestamp to block header

- Enables quickly deriving timestamp from header for log events

pkg/transformers/flop_kick/repository_test.go

@@ -15,15 +15,13 @@
 package flop_kick_test
 
 import (
-	"encoding/json"
-
-	"github.com/ethereum/go-ethereum/core/types"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
 
 	"github.com/vulcanize/vulcanizedb/pkg/core"
 	"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
 	"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres/repositories"
+	"github.com/vulcanize/vulcanizedb/pkg/fakes"
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/flop_kick"
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/test_data"
 	"github.com/vulcanize/vulcanizedb/test_config"
@@ -36,7 +34,6 @@ var _ = Describe("FlopRepository", func() {
 		headerRepository repositories.HeaderRepository
 		err              error
 		dbResult         test_data.FlopKickDBResult
-		rawHeader        []byte
 	)
 
 	BeforeEach(func() {
@@ -45,15 +42,13 @@ var _ = Describe("FlopRepository", func() {
 		repository = flop_kick.NewFlopKickRepository(db)
 		headerRepository = repositories.NewHeaderRepository(db)
 		dbResult = test_data.FlopKickDBResult{}
-		rawHeader, err = json.Marshal(types.Header{})
-		Expect(err).NotTo(HaveOccurred())
 	})
 
 	Describe("Create", func() {
 		var headerId int64
 
 		BeforeEach(func() {
-			headerId, err = headerRepository.CreateOrUpdateHeader(core.Header{Raw: rawHeader})
+			headerId, err = headerRepository.CreateOrUpdateHeader(fakes.FakeHeader)
 			Expect(err).NotTo(HaveOccurred())
 
 			err := repository.Create(headerId, []flop_kick.Model{test_data.FlopKickModel})
@@ -105,7 +100,7 @@ var _ = Describe("FlopRepository", func() {
 		var headerId int64
 
 		BeforeEach(func() {
-			headerId, err = headerRepository.CreateOrUpdateHeader(core.Header{Raw: rawHeader})
+			headerId, err = headerRepository.CreateOrUpdateHeader(fakes.FakeHeader)
 			Expect(err).NotTo(HaveOccurred())
 		})
 
@@ -145,7 +140,7 @@ var _ = Describe("FlopRepository", func() {
 
 			headerIds = []int64{}
 			for _, number := range []int64{startingBlock, flopKickBlock, endingBlock, outOfRangeBlock} {
-				headerId, err := headerRepository.CreateOrUpdateHeader(core.Header{BlockNumber: number, Raw: rawHeader})
+				headerId, err := headerRepository.CreateOrUpdateHeader(fakes.GetFakeHeader(number))
 				Expect(err).NotTo(HaveOccurred())
 				headerIds = append(headerIds, headerId)
 			}
@@ -183,7 +178,7 @@ var _ = Describe("FlopRepository", func() {
 			flopKickRepository2 := flop_kick.NewFlopKickRepository(db2)
 
 			for _, number := range []int64{startingBlock, flopKickBlock, endingBlock} {
-				headerRepository2.CreateOrUpdateHeader(core.Header{BlockNumber: number, Raw: rawHeader})
+				headerRepository2.CreateOrUpdateHeader(fakes.GetFakeHeader(number))
 				Expect(err).NotTo(HaveOccurred())
 			}