Common transformer tests (#97)

* Move chop lump transformer test to a generic log_note_transformer_test

* Add test cases to transformer test

- cat file flip
- cat file pit vow
- deal
- dent

* Move transformer tests over to transformer factor test file

- drip drip
- drip file ilk/repo/vow
- pit file deb ceiling/ilk/stability fee
- price feeds

* Move LogNoteTransformer test into factory package and remove log specific transformer tests

* Move Transformer test into factory package and remove log event specific transformer tests

* Respond to PR comments

pkg/transformers/test_data/mocks/converter.go

@@ -15,6 +15,8 @@ type MockConverter struct {
 	EntitiesToConvert       []interface{}
 	EntitiesToReturn        []interface{}
 	ModelsToReturn          []interface{}
+	ToEntitiesCalledCounter int
+	ToModelsCalledCounter   int
 }
 
 func (converter *MockConverter) ToEntities(contractAbi string, ethLogs []types.Log) ([]interface{}, error) {

pkg/transformers/test_data/mocks/log_note_converter.go

@@ -5,13 +5,15 @@ import (
 )
 
 type MockLogNoteConverter struct {
-	err          error
-	returnModels []interface{}
-	PassedLogs   []types.Log
+	err                   error
+	returnModels          []interface{}
+	PassedLogs            []types.Log
+	ToModelsCalledCounter int
 }
 
 func (converter *MockLogNoteConverter) ToModels(ethLogs []types.Log) ([]interface{}, error) {
 	converter.PassedLogs = ethLogs
+	converter.ToModelsCalledCounter ++
 	return converter.returnModels, converter.err
 }
 

pkg/transformers/test_data/mocks/repository.go

@@ -19,12 +19,14 @@ type MockRepository struct {
 	PassedHeaderID                   int64
 	PassedModels                     []interface{}
 	SetDbCalled                      bool
+	CreateCalledCounter              int
 }
 
 func (repository *MockRepository) Create(headerID int64, models []interface{}) error {
 	repository.PassedHeaderID = headerID
 	repository.PassedModels = models
 	repository.CreatedHeaderIds = append(repository.CreatedHeaderIds, headerID)
+	repository.CreateCalledCounter ++
 
 	return repository.createError
 }