Privatise DB repository field and add transformer test

pkg/transformers/vat_init/repository.go

@@ -22,11 +22,11 @@ import (
 )
 
 type VatInitRepository struct {
-	DB *postgres.DB
+	db *postgres.DB
 }
 
 func (repository VatInitRepository) Create(headerID int64, models []interface{}) error {
-	tx, err := repository.DB.Begin()
+	tx, err := repository.db.Begin()
 	if err != nil {
 		return err
 	}
@@ -64,7 +64,7 @@ func (repository VatInitRepository) Create(headerID int64, models []interface{})
 }
 
 func (repository VatInitRepository) MarkHeaderChecked(headerID int64) error {
-	_, err := repository.DB.Exec(`INSERT INTO public.checked_headers (header_id, vat_init_checked)
+	_, err := repository.db.Exec(`INSERT INTO public.checked_headers (header_id, vat_init_checked)
 		VALUES ($1, $2) 
 	ON CONFLICT (header_id) DO
 		UPDATE SET vat_init_checked = $2`, headerID, true)
@@ -73,7 +73,7 @@ func (repository VatInitRepository) MarkHeaderChecked(headerID int64) error {
 
 func (repository VatInitRepository) MissingHeaders(startingBlockNumber, endingBlockNumber int64) ([]core.Header, error) {
 	var result []core.Header
-	err := repository.DB.Select(
+	err := repository.db.Select(
 		&result,
 		`SELECT headers.id, headers.block_number FROM headers
                LEFT JOIN checked_headers on headers.id = header_id
@@ -83,11 +83,11 @@ func (repository VatInitRepository) MissingHeaders(startingBlockNumber, endingBl
                AND headers.eth_node_fingerprint = $3`,
 		startingBlockNumber,
 		endingBlockNumber,
-		repository.DB.Node.ID,
+		repository.db.Node.ID,
 	)
 	return result, err
 }
 
 func (repository *VatInitRepository) SetDB(db *postgres.DB) {
-	repository.DB = db
+	repository.db = db
 }

pkg/transformers/vat_init/repository_test.go

@@ -40,7 +40,8 @@ var _ = Describe("Vat init repository", func() {
 	BeforeEach(func() {
 		db = test_config.NewTestDB(core.Node{})
 		test_config.CleanTestDB(db)
-		vatInitRepository = vat_init.VatInitRepository{DB: db}
+		vatInitRepository = vat_init.VatInitRepository{}
+		vatInitRepository.SetDB(db)
 		headerRepository = repositories.NewHeaderRepository(db)
 	})
 
@@ -180,7 +181,8 @@ var _ = Describe("Vat init repository", func() {
 				Expect(err).NotTo(HaveOccurred())
 			}
 
-			vatInitRepositoryTwo := vat_init.VatInitRepository{DB: dbTwo}
+			vatInitRepositoryTwo := vat_init.VatInitRepository{}
+			vatInitRepositoryTwo.SetDB(dbTwo)
 			err = vatInitRepository.MarkHeaderChecked(headerIDs[0])
 			Expect(err).NotTo(HaveOccurred())
 
@@ -193,13 +195,4 @@ var _ = Describe("Vat init repository", func() {
 			Expect(len(nodeTwoMissingHeaders)).To(Equal(len(blockNumbers)))
 		})
 	})
-
-	Describe("SetDB", func() {
-		It("sets the repository db", func() {
-			vatInitRepository.SetDB(nil)
-			Expect(vatInitRepository.DB).To(BeNil())
-			vatInitRepository.SetDB(db)
-			Expect(vatInitRepository.DB).To(Equal(db))
-		})
-	})
 })

pkg/transformers/vat_init/transformer_test.go

@@ -55,6 +55,11 @@ var _ = Describe("Vat init transformer", func() {
 		}.NewTransformer(nil, nil)
 	})
 
+	It("sets the blockchain and database", func() {
+		Expect(fetcher.SetBcCalled).To(BeTrue())
+		Expect(repository.SetDbCalled).To(BeTrue())
+	})
+
 	It("gets missing headers for block numbers specified in config", func() {
 		err := transformer.Execute()