Add API to upload media attachments

spec/spec_helper.rb

@@ -12,4 +12,16 @@ RSpec.configure do |config|
   config.mock_with :rspec do |mocks|
     mocks.verify_partial_doubles = true
   end
+
+  config.after(:suite) do
+    FileUtils.rm_rf(Dir["#{Rails.root}/spec/test_files/"])
+  end
+end
+
+def body_as_json
+  json_str_to_hash(response.body)
+end
+
+def json_str_to_hash(str)
+  JSON.parse(str).with_indifferent_access
 end