VDB-302 Sleep when no missing blocks in lightSync (#129)

* Sleep when no missing blocks in lightSync

* Fix tests and error propagation

* Correct geth.log to logrus

pkg/history/header_validator_test.go

@@ -1,22 +1,43 @@
 package history_test
 
 import (
+	"errors"
 	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
 	"github.com/vulcanize/vulcanizedb/pkg/fakes"
 	"github.com/vulcanize/vulcanizedb/pkg/history"
 	"math/big"
 )
 
 var _ = Describe("Header validator", func() {
+	var (
+		headerRepository *fakes.MockHeaderRepository
+		blockChain       *fakes.MockBlockChain
+	)
+
+	BeforeEach(func() {
+		headerRepository = fakes.NewMockHeaderRepository()
+		blockChain = fakes.NewMockBlockChain()
+	})
+
 	It("attempts to create every header in the validation window", func() {
-		headerRepository := fakes.NewMockHeaderRepository()
 		headerRepository.SetMissingBlockNumbers([]int64{})
-		blockChain := fakes.NewMockBlockChain()
 		blockChain.SetLastBlock(big.NewInt(3))
 		validator := history.NewHeaderValidator(blockChain, headerRepository, 2)
 
-		validator.ValidateHeaders()
+		_, err := validator.ValidateHeaders()
+		Expect(err).NotTo(HaveOccurred())
 
 		headerRepository.AssertCreateOrUpdateHeaderCallCountAndPassedBlockNumbers(3, []int64{1, 2, 3})
 	})
+
+	It("propagates header repository errors", func() {
+		blockChain.SetLastBlock(big.NewInt(3))
+		headerRepositoryError := errors.New("CreateOrUpdate")
+		headerRepository.SetCreateOrUpdateHeaderReturnErr(headerRepositoryError)
+		validator := history.NewHeaderValidator(blockChain, headerRepository, 2)
+
+		_, err := validator.ValidateHeaders()
+		Expect(err).To(MatchError(headerRepositoryError))
+	})
 })