Implementa alguns testes para os services

app/serializers/cnba_row_to_transaction_serializer.rb

@@ -23,11 +23,11 @@ class CNBARowToTransactionSerializer < ApplicationSerializer
   end
 
   attribute :store_responsible_name do
-    object[STORE_RESPONSIBLE_NAME_RANGE].strip
+    object[STORE_RESPONSIBLE_NAME_RANGE].to_s.strip
   end
 
   attribute :store_name do
-    object[STORE_NAME_RANGE].strip
+    object[STORE_NAME_RANGE].to_s.strip
   end
 
   attribute :occurred_at do

app/services/cnba_row_to_transaction_service.rb

@@ -23,7 +23,7 @@ def success?
   def transaction_params
     { occurred_at: serialized_transaction[:occurred_at],
       amount: serialized_transaction[:amount], credit_card_id: credit_card.id,
-      kind_id: kind.id, store_id: store.id, user_id: user_id }
+      kind_id: kind&.id, store_id: store.id, user_id: user_id }
   end
 
   def kind

spec/factories/financial_entries.rb

@@ -7,7 +7,7 @@
 
     trait :invalid do
       user_id { nil }
-      content_file { nil }
+      content_file { '' }
     end
 
     factory :invalid_financial_entry, traits: [:invalid]

spec/services/cnba_row_to_transaction_service_spec.rb

@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+describe CNBARowToTransactionService do
+  setup { create(:transaction_kind, code: random_line[0]) }
+
+  subject(:service) { described_class.call(random_line, user_id) }
+
+  let(:financial_entry) do
+    create(:financial_entry, content_file: File.open('./CNAB.txt').read)
+  end
+  let(:content_file) { financial_entry.content_file }
+  let(:random_line) { content_file.lines.sample.to_s.strip }
+  let(:user_id) { financial_entry.user_id }
+
+  describe 'when row invalid' do
+    let(:financial_entry) { build(:invalid_financial_entry) }
+
+    it { is_expected.not_to be_success }
+
+    it { expect(Transaction.count).to eq(0) }
+  end
+
+  describe 'when row valid' do
+    it { is_expected.to be_success }
+  end
+end

spec/services/import_cnba_file_service_spec.rb

@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+describe ImportCNBAFileService do
+  setup do
+    content_file.each_line do |line|
+      next if TransactionKind.exists?(code: line[0])
+
+      create(:transaction_kind, code: line[0])
+    end
+  end
+
+  subject(:service) { described_class.call(financial_entry_params) }
+
+  let(:user) { create(:user) }
+  let(:content_file) { File.open('./CNAB.txt').read }
+  let(:financial_entry_params) do
+    { user_id: user.id, content_file: content_file }
+  end
+
+  describe 'when params invalid' do
+    let(:financial_entry_params) { { user_id: nil, content_file: '' } }
+
+    it { is_expected.not_to be_success }
+
+    it { expect(Transaction.count).to eq(0) }
+  end
+
+  describe 'when params valid' do
+    it { is_expected.to be_success }
+  end
+end

spec/support/devise.rb

@@ -1,5 +1,6 @@
 # frozen_string_literal: true
 
 RSpec.configure do |config|
-  config.include Devise::Test::ControllerHelpers
+  config.include Devise::Test::ControllerHelpers, type: :controller
+  config.include Devise::Test::IntegrationHelpers, type: :service
 end