Update price feeds if header changed by validator

- currently not validating price feeds if the underlying header already exists
  and is valid, since price feeds should have been added when initial header
  was added

pkg/fakes/mock_header_repository.go

@@ -8,6 +8,7 @@ import (
 
 type MockHeaderRepository struct {
 	createOrUpdateHeaderCallCount          int
+	createOrUpdateHeaderErr                error
 	createOrUpdateHeaderPassedBlockNumbers []int64
 	createOrUpdateHeaderReturnID           int64
 	missingBlockNumbers                    []int64
@@ -21,6 +22,10 @@ func (repository *MockHeaderRepository) SetCreateOrUpdateHeaderReturnID(id int64
 	repository.createOrUpdateHeaderReturnID = id
 }
 
+func (repository *MockHeaderRepository) SetCreateOrUpdateHeaderReturnErr(err error) {
+	repository.createOrUpdateHeaderErr = err
+}
+
 func (repository *MockHeaderRepository) SetMissingBlockNumbers(blockNumbers []int64) {
 	repository.missingBlockNumbers = blockNumbers
 }
@@ -28,7 +33,7 @@ func (repository *MockHeaderRepository) SetMissingBlockNumbers(blockNumbers []in
 func (repository *MockHeaderRepository) CreateOrUpdateHeader(header core.Header) (int64, error) {
 	repository.createOrUpdateHeaderCallCount++
 	repository.createOrUpdateHeaderPassedBlockNumbers = append(repository.createOrUpdateHeaderPassedBlockNumbers, header.BlockNumber)
-	return repository.createOrUpdateHeaderReturnID, nil
+	return repository.createOrUpdateHeaderReturnID, repository.createOrUpdateHeaderErr
 }
 
 func (*MockHeaderRepository) GetHeader(blockNumber int64) (core.Header, error) {

pkg/fakes/mock_transformer.go

@@ -9,6 +9,7 @@ import (
 type MockTransformer struct {
 	passedHeader   core.Header
 	passedHeaderID int64
+	executeCalled  bool
 	executeErr     error
 }
 
@@ -16,6 +17,7 @@ func NewMockTransformer() *MockTransformer {
 	return &MockTransformer{
 		passedHeader:   core.Header{},
 		passedHeaderID: 0,
+		executeCalled:  false,
 		executeErr:     nil,
 	}
 }
@@ -25,12 +27,18 @@ func (transformer *MockTransformer) SetExecuteErr(err error) {
 }
 
 func (transformer *MockTransformer) Execute(header core.Header, headerID int64) error {
+	transformer.executeCalled = true
 	transformer.passedHeader = header
 	transformer.passedHeaderID = headerID
 	return transformer.executeErr
 }
 
 func (transformer *MockTransformer) AssertExecuteCalledWith(header core.Header, headerID int64) {
+	Expect(transformer.executeCalled).To(BeTrue())
 	Expect(header).To(Equal(transformer.passedHeader))
 	Expect(headerID).To(Equal(transformer.passedHeaderID))
 }
+
+func (tranformer *MockTransformer) AssertExecuteNotCalled() {
+	Expect(tranformer.executeCalled).To(BeFalse())
+}