Test for when repo is nil in presence_spec

Author: cltweedie

spec/bitbucket_rest_api/validations/presence_spec.rb

@@ -5,7 +5,7 @@
 
   describe "._validates_user_repo_params" do
     it 'raises an ArgumentError if user_name or repo_name is nil' do
-      expect{presence_checker._validate_user_repo_params('user_name')}.to raise_error ArgumentError
+      expect{presence_checker._validate_user_repo_params('user_name', nil)}.to raise_error ArgumentError
       expect{presence_checker._validate_user_repo_params(nil, 'repo_name')}.to raise_error ArgumentError
     end
   end