diff --git a/pkg/transformers/cat_file/chop_lump/chop_lump_suite_test.go b/pkg/transformers/cat_file/chop_lump/chop_lump_suite_test.go
index 61cd6347..be84066a 100644
--- a/pkg/transformers/cat_file/chop_lump/chop_lump_suite_test.go
+++ b/pkg/transformers/cat_file/chop_lump/chop_lump_suite_test.go
@@ -15,6 +15,8 @@
 package chop_lump_test
 
 import (
+	"io/ioutil"
+	"log"
 	"testing"
 
 	. "github.com/onsi/ginkgo"
@@ -25,3 +27,7 @@ func TestChopLump(t *testing.T) {
 	RegisterFailHandler(Fail)
 	RunSpecs(t, "ChopLump Suite")
 }
+
+var _ = BeforeSuite(func() {
+	log.SetOutput(ioutil.Discard)
+})
diff --git a/pkg/transformers/cat_file/chop_lump/converter_test.go b/pkg/transformers/cat_file/chop_lump/converter_test.go
index ba2fa1ab..00bdd97b 100644
--- a/pkg/transformers/cat_file/chop_lump/converter_test.go
+++ b/pkg/transformers/cat_file/chop_lump/converter_test.go
@@ -25,34 +25,34 @@ import (
 )
 
 var _ = Describe("Cat file chop lump converter", func() {
+	var converter chop_lump.CatFileChopLumpConverter
+
+	BeforeEach(func() {
+		converter = chop_lump.CatFileChopLumpConverter{}
+	})
+
 	It("returns err if log is missing topics", func() {
-		converter := chop_lump.CatFileChopLumpConverter{}
 		badLog := types.Log{
 			Data: []byte{1, 1, 1, 1, 1},
 		}
 
 		_, err := converter.ToModels([]types.Log{badLog})
-
 		Expect(err).To(HaveOccurred())
 	})
 
 	It("returns err if log is missing data", func() {
-		converter := chop_lump.CatFileChopLumpConverter{}
 		badLog := types.Log{
 			Topics: []common.Hash{{}, {}, {}, {}},
 		}
 
 		_, err := converter.ToModels([]types.Log{badLog})
-
 		Expect(err).To(HaveOccurred())
 	})
 
 	It("converts a log to an model", func() {
-		converter := chop_lump.CatFileChopLumpConverter{}
-
-		model, err := converter.ToModels([]types.Log{test_data.EthCatFileChopLumpLog})
+		models, err := converter.ToModels([]types.Log{test_data.EthCatFileChopLumpLog})
 
 		Expect(err).NotTo(HaveOccurred())
-		Expect(model).To(Equal([]chop_lump.CatFileChopLumpModel{test_data.CatFileChopLumpModel}))
+		Expect(models).To(Equal([]interface{}{test_data.CatFileChopLumpModel}))
 	})
 })
diff --git a/pkg/transformers/cat_file/chop_lump/repository_test.go b/pkg/transformers/cat_file/chop_lump/repository_test.go
index c593f4b6..772b0afe 100644
--- a/pkg/transformers/cat_file/chop_lump/repository_test.go
+++ b/pkg/transformers/cat_file/chop_lump/repository_test.go
@@ -42,7 +42,8 @@ var _ = Describe("Cat file chop lump repository", func() {
 		db = test_config.NewTestDB(test_config.NewTestNode())
 		test_config.CleanTestDB(db)
 		headerRepository = repositories.NewHeaderRepository(db)
-		catFileRepository = chop_lump.NewCatFileChopLumpRepository(db)
+		catFileRepository = chop_lump.CatFileChopLumpRepository{}
+		catFileRepository.SetDB(db)
 	})
 
 	Describe("Create", func() {
@@ -52,7 +53,7 @@ var _ = Describe("Cat file chop lump repository", func() {
 			headerID, err = headerRepository.CreateOrUpdateHeader(fakes.FakeHeader)
 			Expect(err).NotTo(HaveOccurred())
 
-			err = catFileRepository.Create(headerID, []chop_lump.CatFileChopLumpModel{test_data.CatFileChopLumpModel})
+			err = catFileRepository.Create(headerID, []interface{}{test_data.CatFileChopLumpModel})
 			Expect(err).NotTo(HaveOccurred())
 		})
 
@@ -76,7 +77,7 @@ var _ = Describe("Cat file chop lump repository", func() {
 		})
 
 		It("does not duplicate cat file chop lump events", func() {
-			err = catFileRepository.Create(headerID, []chop_lump.CatFileChopLumpModel{test_data.CatFileChopLumpModel})
+			err = catFileRepository.Create(headerID, []interface{}{test_data.CatFileChopLumpModel})
 
 			Expect(err).To(HaveOccurred())
 			Expect(err.Error()).To(ContainSubstring("pq: duplicate key value violates unique constraint"))
@@ -85,7 +86,7 @@ var _ = Describe("Cat file chop lump repository", func() {
 		It("allows for multiple cat file chop lump events in one transaction if they have different log indexes", func() {
 			newCatFileChopLump := test_data.CatFileChopLumpModel
 			newCatFileChopLump.LogIndex = newCatFileChopLump.LogIndex + 1
-			err = catFileRepository.Create(headerID, []chop_lump.CatFileChopLumpModel{newCatFileChopLump})
+			err = catFileRepository.Create(headerID, []interface{}{newCatFileChopLump})
 
 			Expect(err).NotTo(HaveOccurred())
 		})
@@ -187,7 +188,8 @@ var _ = Describe("Cat file chop lump repository", func() {
 				_, err = headerRepositoryTwo.CreateOrUpdateHeader(fakes.GetFakeHeader(n))
 				Expect(err).NotTo(HaveOccurred())
 			}
-			catFileRepositoryTwo := chop_lump.NewCatFileChopLumpRepository(dbTwo)
+			catFileRepositoryTwo := chop_lump.CatFileChopLumpRepository{}
+			catFileRepositoryTwo.SetDB(dbTwo)
 
 			nodeOneMissingHeaders, err := catFileRepository.MissingHeaders(blockNumbers[0], blockNumbers[len(blockNumbers)-1])
 			Expect(err).NotTo(HaveOccurred())
diff --git a/pkg/transformers/cat_file/chop_lump/transformer_test.go b/pkg/transformers/cat_file/chop_lump/transformer_test.go
index bfb025f5..62b61ea6 100644
--- a/pkg/transformers/cat_file/chop_lump/transformer_test.go
+++ b/pkg/transformers/cat_file/chop_lump/transformer_test.go
@@ -19,42 +19,57 @@ import (
 	"github.com/ethereum/go-ethereum/core/types"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
+	"github.com/vulcanize/vulcanizedb/pkg/transformers/factories"
+	"math/rand"
 
 	"github.com/vulcanize/vulcanizedb/pkg/core"
 	"github.com/vulcanize/vulcanizedb/pkg/fakes"
-	"github.com/vulcanize/vulcanizedb/pkg/transformers/cat_file"
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/cat_file/chop_lump"
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/test_data"
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/test_data/mocks"
-	chop_lump_mocks "github.com/vulcanize/vulcanizedb/pkg/transformers/test_data/mocks/cat_file/chop_lump"
 )
 
 var _ = Describe("Cat file chop lump transformer", func() {
-	It("gets missing headers for block numbers specified in config", func() {
-		repository := &chop_lump_mocks.MockCatFileChopLumpRepository{}
-		transformer := chop_lump.CatFileChopLumpTransformer{
-			Config:     cat_file.CatFileConfig,
-			Fetcher:    &mocks.MockLogFetcher{},
-			Converter:  &chop_lump_mocks.MockCatFileChopLumpConverter{},
-			Repository: repository,
-		}
+	var (
+		config      = chop_lump.CatFileChopLumpConfig
+		repository  mocks.MockRepository
+		converter   mocks.MockConverter
+		fetcher     mocks.MockLogFetcher
+		transformer shared.Transformer
+		headerOne   core.Header
+		headerTwo   core.Header
+	)
 
+	BeforeEach(func() {
+		repository = mocks.MockRepository{}
+		converter = mocks.MockConverter{}
+		fetcher = mocks.MockLogFetcher{}
+		transformer = factories.Transformer{
+			Config:     config,
+			Converter:  &converter,
+			Repository: &repository,
+			Fetcher:    &fetcher,
+		}.NewTransformer(nil, nil)
+		headerOne = core.Header{Id: rand.Int63(), BlockNumber: rand.Int63()}
+		headerTwo = core.Header{Id: rand.Int63(), BlockNumber: rand.Int63()}
+	})
+
+	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()
 
 		Expect(err).NotTo(HaveOccurred())
-		Expect(repository.PassedStartingBlockNumber).To(Equal(cat_file.CatFileConfig.StartingBlockNumber))
-		Expect(repository.PassedEndingBlockNumber).To(Equal(cat_file.CatFileConfig.EndingBlockNumber))
+		Expect(repository.PassedStartingBlockNumber).To(Equal(config.StartingBlockNumber))
+		Expect(repository.PassedEndingBlockNumber).To(Equal(config.EndingBlockNumber))
 	})
 
 	It("returns error if repository returns error for missing headers", func() {
-		repository := &chop_lump_mocks.MockCatFileChopLumpRepository{}
-		repository.SetMissingHeadersErr(fakes.FakeError)
-		transformer := chop_lump.CatFileChopLumpTransformer{
-			Fetcher:    &mocks.MockLogFetcher{},
-			Converter:  &chop_lump_mocks.MockCatFileChopLumpConverter{},
-			Repository: repository,
-		}
+		repository.SetMissingHeadersError(fakes.FakeError)
 
 		err := transformer.Execute()
 
@@ -63,33 +78,20 @@ var _ = Describe("Cat file chop lump transformer", func() {
 	})
 
 	It("fetches logs for missing headers", func() {
-		fetcher := &mocks.MockLogFetcher{}
-		repository := &chop_lump_mocks.MockCatFileChopLumpRepository{}
-		repository.SetMissingHeaders([]core.Header{{BlockNumber: 1}, {BlockNumber: 2}})
-		transformer := chop_lump.CatFileChopLumpTransformer{
-			Fetcher:    fetcher,
-			Converter:  &chop_lump_mocks.MockCatFileChopLumpConverter{},
-			Repository: repository,
-		}
+		repository.SetMissingHeaders([]core.Header{headerOne, headerTwo})
 
 		err := transformer.Execute()
 
 		Expect(err).NotTo(HaveOccurred())
-		Expect(fetcher.FetchedBlocks).To(Equal([]int64{1, 2}))
-		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{cat_file.CatFileConfig.ContractAddresses, cat_file.CatFileConfig.ContractAddresses}))
+		Expect(fetcher.FetchedBlocks).To(Equal([]int64{headerOne.BlockNumber, headerTwo.BlockNumber}))
+		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{
+			config.ContractAddresses, config.ContractAddresses}))
 		Expect(fetcher.FetchedTopics).To(Equal([][]common.Hash{{common.HexToHash(shared.CatFileChopLumpSignature)}}))
 	})
 
 	It("returns error if fetcher returns error", func() {
-		fetcher := &mocks.MockLogFetcher{}
 		fetcher.SetFetcherError(fakes.FakeError)
-		repository := &chop_lump_mocks.MockCatFileChopLumpRepository{}
-		repository.SetMissingHeaders([]core.Header{{BlockNumber: 1}})
-		transformer := chop_lump.CatFileChopLumpTransformer{
-			Fetcher:    fetcher,
-			Converter:  &chop_lump_mocks.MockCatFileChopLumpConverter{},
-			Repository: repository,
-		}
+		repository.SetMissingHeaders([]core.Header{headerOne})
 
 		err := transformer.Execute()
 
@@ -98,34 +100,17 @@ var _ = Describe("Cat file chop lump transformer", func() {
 	})
 
 	It("marks header checked if no logs returned", func() {
-		mockConverter := &chop_lump_mocks.MockCatFileChopLumpConverter{}
-		mockRepository := &chop_lump_mocks.MockCatFileChopLumpRepository{}
-		headerID := int64(123)
-		mockRepository.SetMissingHeaders([]core.Header{{Id: headerID}})
-		mockFetcher := &mocks.MockLogFetcher{}
-		transformer := chop_lump.CatFileChopLumpTransformer{
-			Converter:  mockConverter,
-			Fetcher:    mockFetcher,
-			Repository: mockRepository,
-		}
+		repository.SetMissingHeaders([]core.Header{headerOne})
 
 		err := transformer.Execute()
 
 		Expect(err).NotTo(HaveOccurred())
-		mockRepository.AssertMarkHeaderCheckedCalledWith(headerID)
+		repository.AssertMarkHeaderCheckedCalledWith(headerOne.Id)
 	})
 
 	It("returns error if marking header checked returns err", func() {
-		mockConverter := &chop_lump_mocks.MockCatFileChopLumpConverter{}
-		mockRepository := &chop_lump_mocks.MockCatFileChopLumpRepository{}
-		mockRepository.SetMissingHeaders([]core.Header{{Id: int64(123)}})
-		mockRepository.SetMarkHeaderCheckedErr(fakes.FakeError)
-		mockFetcher := &mocks.MockLogFetcher{}
-		transformer := chop_lump.CatFileChopLumpTransformer{
-			Converter:  mockConverter,
-			Fetcher:    mockFetcher,
-			Repository: mockRepository,
-		}
+		repository.SetMissingHeaders([]core.Header{headerOne})
+		repository.SetMarkHeaderCheckedError(fakes.FakeError)
 
 		err := transformer.Execute()
 
@@ -134,16 +119,8 @@ var _ = Describe("Cat file chop lump transformer", func() {
 	})
 
 	It("converts matching logs", func() {
-		converter := &chop_lump_mocks.MockCatFileChopLumpConverter{}
-		fetcher := &mocks.MockLogFetcher{}
 		fetcher.SetFetchedLogs([]types.Log{test_data.EthCatFileChopLumpLog})
-		repository := &chop_lump_mocks.MockCatFileChopLumpRepository{}
-		repository.SetMissingHeaders([]core.Header{{BlockNumber: 1}})
-		transformer := chop_lump.CatFileChopLumpTransformer{
-			Fetcher:    fetcher,
-			Converter:  converter,
-			Repository: repository,
-		}
+		repository.SetMissingHeaders([]core.Header{headerOne})
 
 		err := transformer.Execute()
 
@@ -152,17 +129,9 @@ var _ = Describe("Cat file chop lump transformer", func() {
 	})
 
 	It("returns error if converter returns error", func() {
-		converter := &chop_lump_mocks.MockCatFileChopLumpConverter{}
 		converter.SetConverterError(fakes.FakeError)
-		fetcher := &mocks.MockLogFetcher{}
 		fetcher.SetFetchedLogs([]types.Log{test_data.EthCatFileChopLumpLog})
-		repository := &chop_lump_mocks.MockCatFileChopLumpRepository{}
-		repository.SetMissingHeaders([]core.Header{{BlockNumber: 1}})
-		transformer := chop_lump.CatFileChopLumpTransformer{
-			Fetcher:    fetcher,
-			Converter:  converter,
-			Repository: repository,
-		}
+		repository.SetMissingHeaders([]core.Header{headerOne})
 
 		err := transformer.Execute()
 
@@ -171,37 +140,20 @@ var _ = Describe("Cat file chop lump transformer", func() {
 	})
 
 	It("persists cat file chop lump model", func() {
-		converter := &chop_lump_mocks.MockCatFileChopLumpConverter{}
-		fetcher := &mocks.MockLogFetcher{}
 		fetcher.SetFetchedLogs([]types.Log{test_data.EthCatFileChopLumpLog})
-		repository := &chop_lump_mocks.MockCatFileChopLumpRepository{}
-		fakeHeader := core.Header{BlockNumber: 1, Id: 2}
-		repository.SetMissingHeaders([]core.Header{fakeHeader})
-		transformer := chop_lump.CatFileChopLumpTransformer{
-			Fetcher:    fetcher,
-			Converter:  converter,
-			Repository: repository,
-		}
-
+		repository.SetMissingHeaders([]core.Header{headerOne})
+		converter.SetReturnModels([]interface{}{test_data.CatFileChopLumpModel})
 		err := transformer.Execute()
 
 		Expect(err).NotTo(HaveOccurred())
-		Expect(repository.PassedHeaderID).To(Equal(fakeHeader.Id))
-		Expect(repository.PassedModels).To(Equal([]chop_lump.CatFileChopLumpModel{test_data.CatFileChopLumpModel}))
+		Expect(repository.PassedHeaderID).To(Equal(headerOne.Id))
+		Expect(repository.PassedModels).To(Equal([]interface{}{test_data.CatFileChopLumpModel}))
 	})
 
 	It("returns error if repository returns error for create", func() {
-		converter := &chop_lump_mocks.MockCatFileChopLumpConverter{}
-		fetcher := &mocks.MockLogFetcher{}
 		fetcher.SetFetchedLogs([]types.Log{test_data.EthCatFileChopLumpLog})
-		repository := &chop_lump_mocks.MockCatFileChopLumpRepository{}
-		repository.SetMissingHeaders([]core.Header{{BlockNumber: 1, Id: 2}})
+		repository.SetMissingHeaders([]core.Header{headerOne})
 		repository.SetCreateError(fakes.FakeError)
-		transformer := chop_lump.CatFileChopLumpTransformer{
-			Fetcher:    fetcher,
-			Converter:  converter,
-			Repository: repository,
-		}
 
 		err := transformer.Execute()
 
diff --git a/pkg/transformers/cat_file/flip/converter_test.go b/pkg/transformers/cat_file/flip/converter_test.go
index 459b4aec..10f75d23 100644
--- a/pkg/transformers/cat_file/flip/converter_test.go
+++ b/pkg/transformers/cat_file/flip/converter_test.go
@@ -25,34 +25,34 @@ import (
 )
 
 var _ = Describe("Cat file flip converter", func() {
+	var converter flip.CatFileFlipConverter
+
+	BeforeEach(func() {
+		converter = flip.CatFileFlipConverter{}
+	})
+
 	It("returns err if log is missing topics", func() {
-		converter := flip.CatFileFlipConverter{}
 		badLog := types.Log{
 			Data: []byte{1, 1, 1, 1, 1},
 		}
 
 		_, err := converter.ToModels([]types.Log{badLog})
-
 		Expect(err).To(HaveOccurred())
 	})
 
 	It("returns err if log is missing data", func() {
-		converter := flip.CatFileFlipConverter{}
 		badLog := types.Log{
 			Topics: []common.Hash{{}, {}, {}, {}},
 		}
 
 		_, err := converter.ToModels([]types.Log{badLog})
-
 		Expect(err).To(HaveOccurred())
 	})
 
 	It("converts a log to an model", func() {
-		converter := flip.CatFileFlipConverter{}
-
-		model, err := converter.ToModels([]types.Log{test_data.EthCatFileFlipLog})
+		models, err := converter.ToModels([]types.Log{test_data.EthCatFileFlipLog})
 
 		Expect(err).NotTo(HaveOccurred())
-		Expect(model).To(Equal([]flip.CatFileFlipModel{test_data.CatFileFlipModel}))
+		Expect(models).To(Equal([]interface{}{test_data.CatFileFlipModel}))
 	})
 })
diff --git a/pkg/transformers/cat_file/flip/flip_suite_test.go b/pkg/transformers/cat_file/flip/flip_suite_test.go
index 6d7e0ae0..29a47e4e 100644
--- a/pkg/transformers/cat_file/flip/flip_suite_test.go
+++ b/pkg/transformers/cat_file/flip/flip_suite_test.go
@@ -15,6 +15,8 @@
 package flip_test
 
 import (
+	"io/ioutil"
+	"log"
 	"testing"
 
 	. "github.com/onsi/ginkgo"
@@ -25,3 +27,7 @@ func TestFlip(t *testing.T) {
 	RegisterFailHandler(Fail)
 	RunSpecs(t, "Flip Suite")
 }
+
+var _ = BeforeSuite(func() {
+	log.SetOutput(ioutil.Discard)
+})
diff --git a/pkg/transformers/cat_file/flip/repository_test.go b/pkg/transformers/cat_file/flip/repository_test.go
index 660f60d0..c658ca4c 100644
--- a/pkg/transformers/cat_file/flip/repository_test.go
+++ b/pkg/transformers/cat_file/flip/repository_test.go
@@ -42,7 +42,8 @@ var _ = Describe("Cat file flip repository", func() {
 		db = test_config.NewTestDB(test_config.NewTestNode())
 		test_config.CleanTestDB(db)
 		headerRepository = repositories.NewHeaderRepository(db)
-		catFileRepository = flip.NewCatFileFlipRepository(db)
+		catFileRepository = flip.CatFileFlipRepository{}
+		catFileRepository.SetDB(db)
 	})
 
 	Describe("Create", func() {
@@ -52,7 +53,7 @@ var _ = Describe("Cat file flip repository", func() {
 			headerID, err = headerRepository.CreateOrUpdateHeader(fakes.FakeHeader)
 			Expect(err).NotTo(HaveOccurred())
 
-			err = catFileRepository.Create(headerID, []flip.CatFileFlipModel{test_data.CatFileFlipModel})
+			err = catFileRepository.Create(headerID, []interface{}{test_data.CatFileFlipModel})
 			Expect(err).NotTo(HaveOccurred())
 		})
 
@@ -76,7 +77,7 @@ var _ = Describe("Cat file flip repository", func() {
 		})
 
 		It("does not duplicate cat file flip events", func() {
-			err = catFileRepository.Create(headerID, []flip.CatFileFlipModel{test_data.CatFileFlipModel})
+			err = catFileRepository.Create(headerID, []interface{}{test_data.CatFileFlipModel})
 
 			Expect(err).To(HaveOccurred())
 			Expect(err.Error()).To(ContainSubstring("pq: duplicate key value violates unique constraint"))
@@ -85,7 +86,7 @@ var _ = Describe("Cat file flip repository", func() {
 		It("allows for multiple cat file flip events in one transaction if they have different log indexes", func() {
 			catFileFlip := test_data.CatFileFlipModel
 			catFileFlip.LogIndex = catFileFlip.LogIndex + 1
-			err = catFileRepository.Create(headerID, []flip.CatFileFlipModel{catFileFlip})
+			err = catFileRepository.Create(headerID, []interface{}{catFileFlip})
 
 			Expect(err).NotTo(HaveOccurred())
 		})
@@ -187,7 +188,8 @@ var _ = Describe("Cat file flip repository", func() {
 				_, err = headerRepositoryTwo.CreateOrUpdateHeader(fakes.GetFakeHeader(n))
 				Expect(err).NotTo(HaveOccurred())
 			}
-			catFileRepositoryTwo := flip.NewCatFileFlipRepository(dbTwo)
+			catFileRepositoryTwo := flip.CatFileFlipRepository{}
+			catFileRepositoryTwo.SetDB(dbTwo)
 
 			nodeOneMissingHeaders, err := catFileRepository.MissingHeaders(blockNumbers[0], blockNumbers[len(blockNumbers)-1])
 			Expect(err).NotTo(HaveOccurred())
diff --git a/pkg/transformers/cat_file/flip/transformer_test.go b/pkg/transformers/cat_file/flip/transformer_test.go
index e47c3db2..6bba1e1f 100644
--- a/pkg/transformers/cat_file/flip/transformer_test.go
+++ b/pkg/transformers/cat_file/flip/transformer_test.go
@@ -19,42 +19,57 @@ import (
 	"github.com/ethereum/go-ethereum/core/types"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
+	"github.com/vulcanize/vulcanizedb/pkg/transformers/factories"
+	"math/rand"
 
 	"github.com/vulcanize/vulcanizedb/pkg/core"
 	"github.com/vulcanize/vulcanizedb/pkg/fakes"
-	"github.com/vulcanize/vulcanizedb/pkg/transformers/cat_file"
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/cat_file/flip"
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/test_data"
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/test_data/mocks"
-	flip_mocks "github.com/vulcanize/vulcanizedb/pkg/transformers/test_data/mocks/cat_file/flip"
 )
 
 var _ = Describe("Cat file flip transformer", func() {
-	It("gets missing headers for block numbers specified in config", func() {
-		repository := &flip_mocks.MockCatFileFlipRepository{}
-		transformer := flip.CatFileFlipTransformer{
-			Config:     cat_file.CatFileConfig,
-			Fetcher:    &mocks.MockLogFetcher{},
-			Converter:  &flip_mocks.MockCatFileFlipConverter{},
-			Repository: repository,
-		}
+	var (
+		config      = flip.CatFileFlipConfig
+		repository  mocks.MockRepository
+		converter   mocks.MockConverter
+		fetcher     mocks.MockLogFetcher
+		transformer shared.Transformer
+		headerOne   core.Header
+		headerTwo   core.Header
+	)
 
+	BeforeEach(func() {
+		repository = mocks.MockRepository{}
+		converter = mocks.MockConverter{}
+		fetcher = mocks.MockLogFetcher{}
+		transformer = factories.Transformer{
+			Config:     config,
+			Converter:  &converter,
+			Repository: &repository,
+			Fetcher:    &fetcher,
+		}.NewTransformer(nil, nil)
+		headerOne = core.Header{Id: rand.Int63(), BlockNumber: rand.Int63()}
+		headerTwo = core.Header{Id: rand.Int63(), BlockNumber: rand.Int63()}
+	})
+
+	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()
 
 		Expect(err).NotTo(HaveOccurred())
-		Expect(repository.PassedStartingBlockNumber).To(Equal(cat_file.CatFileConfig.StartingBlockNumber))
-		Expect(repository.PassedEndingBlockNumber).To(Equal(cat_file.CatFileConfig.EndingBlockNumber))
+		Expect(repository.PassedStartingBlockNumber).To(Equal(config.StartingBlockNumber))
+		Expect(repository.PassedEndingBlockNumber).To(Equal(config.EndingBlockNumber))
 	})
 
 	It("returns error if repository returns error for missing headers", func() {
-		repository := &flip_mocks.MockCatFileFlipRepository{}
-		repository.SetMissingHeadersErr(fakes.FakeError)
-		transformer := flip.CatFileFlipTransformer{
-			Fetcher:    &mocks.MockLogFetcher{},
-			Converter:  &flip_mocks.MockCatFileFlipConverter{},
-			Repository: repository,
-		}
+		repository.SetMissingHeadersError(fakes.FakeError)
 
 		err := transformer.Execute()
 
@@ -63,33 +78,20 @@ var _ = Describe("Cat file flip transformer", func() {
 	})
 
 	It("fetches logs for missing headers", func() {
-		fetcher := &mocks.MockLogFetcher{}
-		repository := &flip_mocks.MockCatFileFlipRepository{}
-		repository.SetMissingHeaders([]core.Header{{BlockNumber: 1}, {BlockNumber: 2}})
-		transformer := flip.CatFileFlipTransformer{
-			Fetcher:    fetcher,
-			Converter:  &flip_mocks.MockCatFileFlipConverter{},
-			Repository: repository,
-		}
+		repository.SetMissingHeaders([]core.Header{headerOne, headerTwo})
 
 		err := transformer.Execute()
 
 		Expect(err).NotTo(HaveOccurred())
-		Expect(fetcher.FetchedBlocks).To(Equal([]int64{1, 2}))
-		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{cat_file.CatFileConfig.ContractAddresses, cat_file.CatFileConfig.ContractAddresses}))
+		Expect(fetcher.FetchedBlocks).To(Equal([]int64{headerOne.BlockNumber, headerTwo.BlockNumber}))
+		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{
+			config.ContractAddresses, config.ContractAddresses}))
 		Expect(fetcher.FetchedTopics).To(Equal([][]common.Hash{{common.HexToHash(shared.CatFileFlipSignature)}}))
 	})
 
 	It("returns error if fetcher returns error", func() {
-		fetcher := &mocks.MockLogFetcher{}
 		fetcher.SetFetcherError(fakes.FakeError)
-		repository := &flip_mocks.MockCatFileFlipRepository{}
-		repository.SetMissingHeaders([]core.Header{{BlockNumber: 1}})
-		transformer := flip.CatFileFlipTransformer{
-			Fetcher:    fetcher,
-			Converter:  &flip_mocks.MockCatFileFlipConverter{},
-			Repository: repository,
-		}
+		repository.SetMissingHeaders([]core.Header{headerOne})
 
 		err := transformer.Execute()
 
@@ -98,34 +100,17 @@ var _ = Describe("Cat file flip transformer", func() {
 	})
 
 	It("marks header checked if no logs returned", func() {
-		mockConverter := &flip_mocks.MockCatFileFlipConverter{}
-		mockRepository := &flip_mocks.MockCatFileFlipRepository{}
-		headerID := int64(123)
-		mockRepository.SetMissingHeaders([]core.Header{{Id: headerID}})
-		mockFetcher := &mocks.MockLogFetcher{}
-		transformer := flip.CatFileFlipTransformer{
-			Converter:  mockConverter,
-			Fetcher:    mockFetcher,
-			Repository: mockRepository,
-		}
+		repository.SetMissingHeaders([]core.Header{headerOne})
 
 		err := transformer.Execute()
 
 		Expect(err).NotTo(HaveOccurred())
-		mockRepository.AssertMarkHeaderCheckedCalledWith(headerID)
+		repository.AssertMarkHeaderCheckedCalledWith(headerOne.Id)
 	})
 
 	It("returns error if marking header checked returns err", func() {
-		mockConverter := &flip_mocks.MockCatFileFlipConverter{}
-		mockRepository := &flip_mocks.MockCatFileFlipRepository{}
-		mockRepository.SetMissingHeaders([]core.Header{{Id: int64(123)}})
-		mockRepository.SetMarkHeaderCheckedErr(fakes.FakeError)
-		mockFetcher := &mocks.MockLogFetcher{}
-		transformer := flip.CatFileFlipTransformer{
-			Converter:  mockConverter,
-			Fetcher:    mockFetcher,
-			Repository: mockRepository,
-		}
+		repository.SetMissingHeaders([]core.Header{headerOne})
+		repository.SetMarkHeaderCheckedError(fakes.FakeError)
 
 		err := transformer.Execute()
 
@@ -134,16 +119,8 @@ var _ = Describe("Cat file flip transformer", func() {
 	})
 
 	It("converts matching logs", func() {
-		converter := &flip_mocks.MockCatFileFlipConverter{}
-		fetcher := &mocks.MockLogFetcher{}
 		fetcher.SetFetchedLogs([]types.Log{test_data.EthCatFileFlipLog})
-		repository := &flip_mocks.MockCatFileFlipRepository{}
-		repository.SetMissingHeaders([]core.Header{{BlockNumber: 1}})
-		transformer := flip.CatFileFlipTransformer{
-			Fetcher:    fetcher,
-			Converter:  converter,
-			Repository: repository,
-		}
+		repository.SetMissingHeaders([]core.Header{headerOne})
 
 		err := transformer.Execute()
 
@@ -152,17 +129,9 @@ var _ = Describe("Cat file flip transformer", func() {
 	})
 
 	It("returns error if converter returns error", func() {
-		converter := &flip_mocks.MockCatFileFlipConverter{}
 		converter.SetConverterError(fakes.FakeError)
-		fetcher := &mocks.MockLogFetcher{}
 		fetcher.SetFetchedLogs([]types.Log{test_data.EthCatFileFlipLog})
-		repository := &flip_mocks.MockCatFileFlipRepository{}
-		repository.SetMissingHeaders([]core.Header{{BlockNumber: 1}})
-		transformer := flip.CatFileFlipTransformer{
-			Fetcher:    fetcher,
-			Converter:  converter,
-			Repository: repository,
-		}
+		repository.SetMissingHeaders([]core.Header{headerOne})
 
 		err := transformer.Execute()
 
@@ -171,37 +140,21 @@ var _ = Describe("Cat file flip transformer", func() {
 	})
 
 	It("persists cat file flip model", func() {
-		converter := &flip_mocks.MockCatFileFlipConverter{}
-		fetcher := &mocks.MockLogFetcher{}
 		fetcher.SetFetchedLogs([]types.Log{test_data.EthCatFileFlipLog})
-		repository := &flip_mocks.MockCatFileFlipRepository{}
-		fakeHeader := core.Header{BlockNumber: 1, Id: 2}
-		repository.SetMissingHeaders([]core.Header{fakeHeader})
-		transformer := flip.CatFileFlipTransformer{
-			Fetcher:    fetcher,
-			Converter:  converter,
-			Repository: repository,
-		}
+		converter.SetReturnModels([]interface{}{test_data.CatFileFlipModel})
+		repository.SetMissingHeaders([]core.Header{headerOne})
 
 		err := transformer.Execute()
 
 		Expect(err).NotTo(HaveOccurred())
-		Expect(repository.PassedHeaderID).To(Equal(fakeHeader.Id))
-		Expect(repository.PassedModels).To(Equal([]flip.CatFileFlipModel{test_data.CatFileFlipModel}))
+		Expect(repository.PassedHeaderID).To(Equal(headerOne.Id))
+		Expect(repository.PassedModels).To(Equal([]interface{}{test_data.CatFileFlipModel}))
 	})
 
 	It("returns error if repository returns error for create", func() {
-		converter := &flip_mocks.MockCatFileFlipConverter{}
-		fetcher := &mocks.MockLogFetcher{}
 		fetcher.SetFetchedLogs([]types.Log{test_data.EthCatFileFlipLog})
-		repository := &flip_mocks.MockCatFileFlipRepository{}
-		repository.SetMissingHeaders([]core.Header{{BlockNumber: 1, Id: 2}})
+		repository.SetMissingHeaders([]core.Header{headerOne})
 		repository.SetCreateError(fakes.FakeError)
-		transformer := flip.CatFileFlipTransformer{
-			Fetcher:    fetcher,
-			Converter:  converter,
-			Repository: repository,
-		}
 
 		err := transformer.Execute()
 
diff --git a/pkg/transformers/cat_file/pit_vow/converter_test.go b/pkg/transformers/cat_file/pit_vow/converter_test.go
index 01588a4f..062f2623 100644
--- a/pkg/transformers/cat_file/pit_vow/converter_test.go
+++ b/pkg/transformers/cat_file/pit_vow/converter_test.go
@@ -25,34 +25,34 @@ import (
 )
 
 var _ = Describe("Cat file pit vow converter", func() {
+	var converter pit_vow.CatFilePitVowConverter
+
+	BeforeEach(func() {
+		converter = pit_vow.CatFilePitVowConverter{}
+	})
+
 	It("returns err if log is missing topics", func() {
-		converter := pit_vow.CatFilePitVowConverter{}
 		badLog := types.Log{
 			Data: []byte{1, 1, 1, 1, 1},
 		}
 
 		_, err := converter.ToModels([]types.Log{badLog})
-
 		Expect(err).To(HaveOccurred())
 	})
 
 	It("returns err if log is missing data", func() {
-		converter := pit_vow.CatFilePitVowConverter{}
 		badLog := types.Log{
 			Topics: []common.Hash{{}, {}, {}, {}},
 		}
 
 		_, err := converter.ToModels([]types.Log{badLog})
-
 		Expect(err).To(HaveOccurred())
 	})
 
 	It("converts a log to an model", func() {
-		converter := pit_vow.CatFilePitVowConverter{}
-
-		model, err := converter.ToModels([]types.Log{test_data.EthCatFilePitVowLog})
+		models, err := converter.ToModels([]types.Log{test_data.EthCatFilePitVowLog})
 
 		Expect(err).NotTo(HaveOccurred())
-		Expect(model).To(Equal([]pit_vow.CatFilePitVowModel{test_data.CatFilePitVowModel}))
+		Expect(models).To(Equal([]interface{}{test_data.CatFilePitVowModel}))
 	})
 })
diff --git a/pkg/transformers/cat_file/pit_vow/pit_vow_suite_test.go b/pkg/transformers/cat_file/pit_vow/pit_vow_suite_test.go
index 56a4aa36..99eaf081 100644
--- a/pkg/transformers/cat_file/pit_vow/pit_vow_suite_test.go
+++ b/pkg/transformers/cat_file/pit_vow/pit_vow_suite_test.go
@@ -15,6 +15,8 @@
 package pit_vow_test
 
 import (
+	"io/ioutil"
+	"log"
 	"testing"
 
 	. "github.com/onsi/ginkgo"
@@ -25,3 +27,7 @@ func TestPitVow(t *testing.T) {
 	RegisterFailHandler(Fail)
 	RunSpecs(t, "PitVow Suite")
 }
+
+var _ = BeforeSuite(func() {
+	log.SetOutput(ioutil.Discard)
+})
diff --git a/pkg/transformers/cat_file/pit_vow/repository_test.go b/pkg/transformers/cat_file/pit_vow/repository_test.go
index da912b4a..7f8ad4ac 100644
--- a/pkg/transformers/cat_file/pit_vow/repository_test.go
+++ b/pkg/transformers/cat_file/pit_vow/repository_test.go
@@ -42,7 +42,8 @@ var _ = Describe("Cat file pit vow repository", func() {
 		db = test_config.NewTestDB(test_config.NewTestNode())
 		test_config.CleanTestDB(db)
 		headerRepository = repositories.NewHeaderRepository(db)
-		catFileRepository = pit_vow.NewCatFilePitVowRepository(db)
+		catFileRepository = pit_vow.CatFilePitVowRepository{}
+		catFileRepository.SetDB(db)
 	})
 
 	Describe("Create", func() {
@@ -52,7 +53,7 @@ var _ = Describe("Cat file pit vow repository", func() {
 			headerID, err = headerRepository.CreateOrUpdateHeader(fakes.FakeHeader)
 			Expect(err).NotTo(HaveOccurred())
 
-			err = catFileRepository.Create(headerID, []pit_vow.CatFilePitVowModel{test_data.CatFilePitVowModel})
+			err = catFileRepository.Create(headerID, []interface{}{test_data.CatFilePitVowModel})
 			Expect(err).NotTo(HaveOccurred())
 		})
 
@@ -75,7 +76,7 @@ var _ = Describe("Cat file pit vow repository", func() {
 		})
 
 		It("does not duplicate cat file pit vow events", func() {
-			err = catFileRepository.Create(headerID, []pit_vow.CatFilePitVowModel{test_data.CatFilePitVowModel})
+			err = catFileRepository.Create(headerID, []interface{}{test_data.CatFilePitVowModel})
 
 			Expect(err).To(HaveOccurred())
 			Expect(err.Error()).To(ContainSubstring("pq: duplicate key value violates unique constraint"))
@@ -84,7 +85,7 @@ var _ = Describe("Cat file pit vow repository", func() {
 		It("allows for multiple cat file pit events in one transaction if they have different log indexes", func() {
 			catFilePitVow := test_data.CatFilePitVowModel
 			catFilePitVow.LogIndex = catFilePitVow.LogIndex + 1
-			err = catFileRepository.Create(headerID, []pit_vow.CatFilePitVowModel{catFilePitVow})
+			err = catFileRepository.Create(headerID, []interface{}{catFilePitVow})
 
 			Expect(err).NotTo(HaveOccurred())
 		})
@@ -186,7 +187,8 @@ var _ = Describe("Cat file pit vow repository", func() {
 				_, err = headerRepositoryTwo.CreateOrUpdateHeader(fakes.GetFakeHeader(n))
 				Expect(err).NotTo(HaveOccurred())
 			}
-			catFileRepositoryTwo := pit_vow.NewCatFilePitVowRepository(dbTwo)
+			catFileRepositoryTwo := pit_vow.CatFilePitVowRepository{}
+			catFileRepositoryTwo.SetDB(dbTwo)
 
 			nodeOneMissingHeaders, err := catFileRepository.MissingHeaders(blockNumbers[0], blockNumbers[len(blockNumbers)-1])
 			Expect(err).NotTo(HaveOccurred())
diff --git a/pkg/transformers/cat_file/pit_vow/transformer_test.go b/pkg/transformers/cat_file/pit_vow/transformer_test.go
index b9e894b1..4dd69f64 100644
--- a/pkg/transformers/cat_file/pit_vow/transformer_test.go
+++ b/pkg/transformers/cat_file/pit_vow/transformer_test.go
@@ -19,42 +19,57 @@ import (
 	"github.com/ethereum/go-ethereum/core/types"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
+	"github.com/vulcanize/vulcanizedb/pkg/transformers/factories"
+	"math/rand"
 
 	"github.com/vulcanize/vulcanizedb/pkg/core"
 	"github.com/vulcanize/vulcanizedb/pkg/fakes"
-	"github.com/vulcanize/vulcanizedb/pkg/transformers/cat_file"
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/cat_file/pit_vow"
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/test_data"
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/test_data/mocks"
-	pit_vow_mocks "github.com/vulcanize/vulcanizedb/pkg/transformers/test_data/mocks/cat_file/pit_vow"
 )
 
 var _ = Describe("Cat file pit vow transformer", func() {
-	It("gets missing headers for block numbers specified in config", func() {
-		repository := &pit_vow_mocks.MockCatFilePitVowRepository{}
-		transformer := pit_vow.CatFilePitVowTransformer{
-			Config:     cat_file.CatFileConfig,
-			Fetcher:    &mocks.MockLogFetcher{},
-			Converter:  &pit_vow_mocks.MockCatFilePitVowConverter{},
-			Repository: repository,
-		}
+	var (
+		config      = pit_vow.CatFilePitVowConfig
+		repository  mocks.MockRepository
+		converter   mocks.MockConverter
+		fetcher     mocks.MockLogFetcher
+		transformer shared.Transformer
+		headerOne   core.Header
+		headerTwo   core.Header
+	)
 
+	BeforeEach(func() {
+		repository = mocks.MockRepository{}
+		converter = mocks.MockConverter{}
+		fetcher = mocks.MockLogFetcher{}
+		transformer = factories.Transformer{
+			Config:     config,
+			Converter:  &converter,
+			Repository: &repository,
+			Fetcher:    &fetcher,
+		}.NewTransformer(nil, nil)
+		headerOne = core.Header{Id: rand.Int63(), BlockNumber: rand.Int63()}
+		headerTwo = core.Header{Id: rand.Int63(), BlockNumber: rand.Int63()}
+	})
+
+	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()
 
 		Expect(err).NotTo(HaveOccurred())
-		Expect(repository.PassedStartingBlockNumber).To(Equal(cat_file.CatFileConfig.StartingBlockNumber))
-		Expect(repository.PassedEndingBlockNumber).To(Equal(cat_file.CatFileConfig.EndingBlockNumber))
+		Expect(repository.PassedStartingBlockNumber).To(Equal(config.StartingBlockNumber))
+		Expect(repository.PassedEndingBlockNumber).To(Equal(config.EndingBlockNumber))
 	})
 
 	It("returns error if repository returns error for missing headers", func() {
-		repository := &pit_vow_mocks.MockCatFilePitVowRepository{}
-		repository.SetMissingHeadersErr(fakes.FakeError)
-		transformer := pit_vow.CatFilePitVowTransformer{
-			Fetcher:    &mocks.MockLogFetcher{},
-			Converter:  &pit_vow_mocks.MockCatFilePitVowConverter{},
-			Repository: repository,
-		}
+		repository.SetMissingHeadersError(fakes.FakeError)
 
 		err := transformer.Execute()
 
@@ -63,33 +78,20 @@ var _ = Describe("Cat file pit vow transformer", func() {
 	})
 
 	It("fetches logs for missing headers", func() {
-		fetcher := &mocks.MockLogFetcher{}
-		repository := &pit_vow_mocks.MockCatFilePitVowRepository{}
-		repository.SetMissingHeaders([]core.Header{{BlockNumber: 1}, {BlockNumber: 2}})
-		transformer := pit_vow.CatFilePitVowTransformer{
-			Fetcher:    fetcher,
-			Converter:  &pit_vow_mocks.MockCatFilePitVowConverter{},
-			Repository: repository,
-		}
+		repository.SetMissingHeaders([]core.Header{headerOne, headerTwo})
 
 		err := transformer.Execute()
 
 		Expect(err).NotTo(HaveOccurred())
-		Expect(fetcher.FetchedBlocks).To(Equal([]int64{1, 2}))
-		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{cat_file.CatFileConfig.ContractAddresses, cat_file.CatFileConfig.ContractAddresses}))
+		Expect(fetcher.FetchedBlocks).To(Equal([]int64{headerOne.BlockNumber, headerTwo.BlockNumber}))
+		Expect(fetcher.FetchedContractAddresses).To(Equal([][]string{
+			config.ContractAddresses, config.ContractAddresses}))
 		Expect(fetcher.FetchedTopics).To(Equal([][]common.Hash{{common.HexToHash(shared.CatFilePitVowSignature)}}))
 	})
 
 	It("returns error if fetcher returns error", func() {
-		fetcher := &mocks.MockLogFetcher{}
 		fetcher.SetFetcherError(fakes.FakeError)
-		repository := &pit_vow_mocks.MockCatFilePitVowRepository{}
-		repository.SetMissingHeaders([]core.Header{{BlockNumber: 1}})
-		transformer := pit_vow.CatFilePitVowTransformer{
-			Fetcher:    fetcher,
-			Converter:  &pit_vow_mocks.MockCatFilePitVowConverter{},
-			Repository: repository,
-		}
+		repository.SetMissingHeaders([]core.Header{headerOne})
 
 		err := transformer.Execute()
 
@@ -98,34 +100,17 @@ var _ = Describe("Cat file pit vow transformer", func() {
 	})
 
 	It("marks header checked if no logs returned", func() {
-		mockConverter := &pit_vow_mocks.MockCatFilePitVowConverter{}
-		mockRepository := &pit_vow_mocks.MockCatFilePitVowRepository{}
-		headerID := int64(123)
-		mockRepository.SetMissingHeaders([]core.Header{{Id: headerID}})
-		mockFetcher := &mocks.MockLogFetcher{}
-		transformer := pit_vow.CatFilePitVowTransformer{
-			Converter:  mockConverter,
-			Fetcher:    mockFetcher,
-			Repository: mockRepository,
-		}
+		repository.SetMissingHeaders([]core.Header{headerOne})
 
 		err := transformer.Execute()
 
 		Expect(err).NotTo(HaveOccurred())
-		mockRepository.AssertMarkHeaderCheckedCalledWith(headerID)
+		repository.AssertMarkHeaderCheckedCalledWith(headerOne.Id)
 	})
 
 	It("returns error if marking header checked returns err", func() {
-		mockConverter := &pit_vow_mocks.MockCatFilePitVowConverter{}
-		mockRepository := &pit_vow_mocks.MockCatFilePitVowRepository{}
-		mockRepository.SetMissingHeaders([]core.Header{{Id: int64(123)}})
-		mockRepository.SetMarkHeaderCheckedErr(fakes.FakeError)
-		mockFetcher := &mocks.MockLogFetcher{}
-		transformer := pit_vow.CatFilePitVowTransformer{
-			Converter:  mockConverter,
-			Fetcher:    mockFetcher,
-			Repository: mockRepository,
-		}
+		repository.SetMissingHeaders([]core.Header{headerOne})
+		repository.SetMarkHeaderCheckedError(fakes.FakeError)
 
 		err := transformer.Execute()
 
@@ -134,16 +119,8 @@ var _ = Describe("Cat file pit vow transformer", func() {
 	})
 
 	It("converts matching logs", func() {
-		converter := &pit_vow_mocks.MockCatFilePitVowConverter{}
-		fetcher := &mocks.MockLogFetcher{}
 		fetcher.SetFetchedLogs([]types.Log{test_data.EthCatFilePitVowLog})
-		repository := &pit_vow_mocks.MockCatFilePitVowRepository{}
-		repository.SetMissingHeaders([]core.Header{{BlockNumber: 1}})
-		transformer := pit_vow.CatFilePitVowTransformer{
-			Fetcher:    fetcher,
-			Converter:  converter,
-			Repository: repository,
-		}
+		repository.SetMissingHeaders([]core.Header{headerOne})
 
 		err := transformer.Execute()
 
@@ -152,17 +129,9 @@ var _ = Describe("Cat file pit vow transformer", func() {
 	})
 
 	It("returns error if converter returns error", func() {
-		converter := &pit_vow_mocks.MockCatFilePitVowConverter{}
 		converter.SetConverterError(fakes.FakeError)
-		fetcher := &mocks.MockLogFetcher{}
 		fetcher.SetFetchedLogs([]types.Log{test_data.EthCatFilePitVowLog})
-		repository := &pit_vow_mocks.MockCatFilePitVowRepository{}
-		repository.SetMissingHeaders([]core.Header{{BlockNumber: 1}})
-		transformer := pit_vow.CatFilePitVowTransformer{
-			Fetcher:    fetcher,
-			Converter:  converter,
-			Repository: repository,
-		}
+		repository.SetMissingHeaders([]core.Header{headerOne})
 
 		err := transformer.Execute()
 
@@ -171,37 +140,21 @@ var _ = Describe("Cat file pit vow transformer", func() {
 	})
 
 	It("persists cat file pit vow model", func() {
-		converter := &pit_vow_mocks.MockCatFilePitVowConverter{}
-		fetcher := &mocks.MockLogFetcher{}
 		fetcher.SetFetchedLogs([]types.Log{test_data.EthCatFilePitVowLog})
-		repository := &pit_vow_mocks.MockCatFilePitVowRepository{}
-		fakeHeader := core.Header{BlockNumber: 1, Id: 2}
-		repository.SetMissingHeaders([]core.Header{fakeHeader})
-		transformer := pit_vow.CatFilePitVowTransformer{
-			Fetcher:    fetcher,
-			Converter:  converter,
-			Repository: repository,
-		}
+		converter.SetReturnModels([]interface{}{test_data.CatFilePitVowModel})
+		repository.SetMissingHeaders([]core.Header{headerOne})
 
 		err := transformer.Execute()
 
 		Expect(err).NotTo(HaveOccurred())
-		Expect(repository.PassedHeaderID).To(Equal(fakeHeader.Id))
-		Expect(repository.PassedModels).To(Equal([]pit_vow.CatFilePitVowModel{test_data.CatFilePitVowModel}))
+		Expect(repository.PassedHeaderID).To(Equal(headerOne.Id))
+		Expect(repository.PassedModels).To(Equal([]interface{}{test_data.CatFilePitVowModel}))
 	})
 
 	It("returns error if repository returns error for create", func() {
-		converter := &pit_vow_mocks.MockCatFilePitVowConverter{}
-		fetcher := &mocks.MockLogFetcher{}
 		fetcher.SetFetchedLogs([]types.Log{test_data.EthCatFilePitVowLog})
-		repository := &pit_vow_mocks.MockCatFilePitVowRepository{}
-		repository.SetMissingHeaders([]core.Header{{BlockNumber: 1, Id: 2}})
+		repository.SetMissingHeaders([]core.Header{headerOne})
 		repository.SetCreateError(fakes.FakeError)
-		transformer := pit_vow.CatFilePitVowTransformer{
-			Fetcher:    fetcher,
-			Converter:  converter,
-			Repository: repository,
-		}
 
 		err := transformer.Execute()
 
diff --git a/pkg/transformers/integration_tests/cat_file.go b/pkg/transformers/integration_tests/cat_file.go
index abf32cb8..b53c0a56 100644
--- a/pkg/transformers/integration_tests/cat_file.go
+++ b/pkg/transformers/integration_tests/cat_file.go
@@ -15,6 +15,8 @@
 package integration_tests
 
 import (
+	"github.com/vulcanize/vulcanizedb/pkg/transformers/factories"
+	"github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
 	"sort"
 
 	"github.com/ethereum/go-ethereum/ethclient"
@@ -24,7 +26,6 @@ import (
 	"github.com/vulcanize/vulcanizedb/pkg/core"
 	"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
 	"github.com/vulcanize/vulcanizedb/pkg/geth/client"
-	"github.com/vulcanize/vulcanizedb/pkg/transformers/cat_file"
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/cat_file/chop_lump"
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/cat_file/flip"
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/cat_file/pit_vow"
@@ -56,12 +57,17 @@ var _ = Describe("Cat File transformer", func() {
 		err = persistHeader(db, chopLumpBlockNumber)
 		Expect(err).NotTo(HaveOccurred())
 
-		config := cat_file.CatFileConfig
+		config := chop_lump.CatFileChopLumpConfig
 		config.StartingBlockNumber = chopLumpBlockNumber
 		config.EndingBlockNumber = chopLumpBlockNumber
 
-		initializer := chop_lump.CatFileChopLumpTransformerInitializer{Config: config}
-		transformer := initializer.NewCatFileChopLumpTransformer(db, blockchain)
+		initializer := factories.Transformer{
+			Config:     config,
+			Converter:  &chop_lump.CatFileChopLumpConverter{},
+			Repository: &chop_lump.CatFileChopLumpRepository{},
+			Fetcher:    &shared.Fetcher{},
+		}
+		transformer := initializer.NewTransformer(db, blockchain)
 		err := transformer.Execute()
 		Expect(err).NotTo(HaveOccurred())
 
@@ -89,12 +95,17 @@ var _ = Describe("Cat File transformer", func() {
 		err = persistHeader(db, flipBlockNumber)
 		Expect(err).NotTo(HaveOccurred())
 
-		config := cat_file.CatFileConfig
+		config := flip.CatFileFlipConfig
 		config.StartingBlockNumber = flipBlockNumber
 		config.EndingBlockNumber = flipBlockNumber
 
-		initializer := flip.CatFileFlipTransformerInitializer{Config: config}
-		transformer := initializer.NewCatFileFlipTransformer(db, blockchain)
+		initializer := factories.Transformer{
+			Config:     config,
+			Converter:  &flip.CatFileFlipConverter{},
+			Repository: &flip.CatFileFlipRepository{},
+			Fetcher:    &shared.Fetcher{},
+		}
+		transformer := initializer.NewTransformer(db, blockchain)
 		err := transformer.Execute()
 		Expect(err).NotTo(HaveOccurred())
 
@@ -114,12 +125,17 @@ var _ = Describe("Cat File transformer", func() {
 		err = persistHeader(db, pitVowBlockNumber)
 		Expect(err).NotTo(HaveOccurred())
 
-		config := cat_file.CatFileConfig
+		config := pit_vow.CatFilePitVowConfig
 		config.StartingBlockNumber = pitVowBlockNumber
 		config.EndingBlockNumber = pitVowBlockNumber
 
-		initializer := pit_vow.CatFilePitVowTransformerInitializer{Config: config}
-		transformer := initializer.NewCatFilePitVowTransformer(db, blockchain)
+		initializer := factories.Transformer{
+			Config:     config,
+			Converter:  &pit_vow.CatFilePitVowConverter{},
+			Repository: &pit_vow.CatFilePitVowRepository{},
+			Fetcher:    &shared.Fetcher{},
+		}
+		transformer := initializer.NewTransformer(db, blockchain)
 		err := transformer.Execute()
 		Expect(err).NotTo(HaveOccurred())