diff --git a/.travis.yml b/.travis.yml
index 27b28e7..7a80c02 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,4 +4,5 @@ rvm:
 before_install: gem install bundler -v 1.11.2
 
 script:
-  - CODECLIMATE_REPO_TOKEN=763e2fed349469f0d07de8278c7df59cc64b9b8aa8f2f178fb1e7c5efae1bc49 bundle exec rspec
+  - bundle exec rake
+  - CODECLIMATE_REPO_TOKEN=763e2fed349469f0d07de8278c7df59cc64b9b8aa8f2f178fb1e7c5efae1bc49 bundle exec codeclimate-test-reporter
diff --git a/dao-gateway.gemspec b/dao-gateway.gemspec
index a0320cf..51c6737 100644
--- a/dao-gateway.gemspec
+++ b/dao-gateway.gemspec
@@ -24,5 +24,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rake', '~> 10.0'
   spec.add_development_dependency 'rspec', '~> 3.4'
   spec.add_development_dependency 'rspec-its'
-  spec.add_development_dependency 'codeclimate-test-reporter'
+  spec.add_development_dependency 'simplecov'
+  spec.add_development_dependency 'codeclimate-test-reporter', '~> 1.0.0'
 end
diff --git a/lib/dao/gateway/base.rb b/lib/dao/gateway/base.rb
index c806e40..a6af31a 100644
--- a/lib/dao/gateway/base.rb
+++ b/lib/dao/gateway/base.rb
@@ -34,6 +34,10 @@ def with_transaction(&_block)
         raise TransactionNotSupported
       end
 
+      def with_lock(_id, &_block)
+        raise LockNotSupported
+      end
+
       def serializable_relations(relations)
         convert_array(relations)
       end
diff --git a/lib/dao/gateway/lock_not_supported.rb b/lib/dao/gateway/lock_not_supported.rb
new file mode 100644
index 0000000..2c2aebb
--- /dev/null
+++ b/lib/dao/gateway/lock_not_supported.rb
@@ -0,0 +1,5 @@
+module Dao
+  module Gateway
+    class LockNotSupported < StandardError; end
+  end
+end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index a750ab9..51d0dc5 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,7 +1,5 @@
-if ENV['CODECLIMATE_REPO_TOKEN']
-  require 'codeclimate-test-reporter'
-  CodeClimate::TestReporter.start
-end
+require 'simplecov'
+SimpleCov.start
 
 $LOAD_PATH.unshift File.expand_path('../../lib', __FILE__)
 require 'dao/gateway'