```ruby
#
# Cookbook Name:: ratpoison
#
# Copyright 2014, Shuberg Philis B.V.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

require 'chefspec'
require 'chefspec/berkshelf'
require 'simplecov'

SimpleCov.start do
  add_filter '/test/'
end

RSpec.configure do |config|
  config.platform = 'centos'
  config.version = '6.5'
end
```

Set centos 6.6 as the os version
user
```ruby
#
# Cookbook Name:: ratpoison
#
# Copyright 2014, Shuberg Philis B.V.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

require 'chefspec'
require 'chefspec/berkshelf'
require 'simplecov'

SimpleCov.start do
  add_filter '/test/'
end

RSpec.configure do |config|
  config.platform = 'centos'
  config.version  = '6.6'
end
```
assistant