```ruby
# encoding: UTF-8
#
# Author:: Xabier de Zuazo (<xabier@zuazo.org>)
# Copyright:: Copyright (c) 2015 Onddo Labs, SL.
# License:: Apache License, Version 2.0
#
# 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_relative '../../../kitchen/data/spec_helper'

def centos?
  File.exist?('/etc/centos-release')
end

family = os[:family].downcase
release = os[:release].to_i

postgres =
  if %w(centos redhat scientific amazon).include?(family)
    if centos? && release >= 7
      'postgres'
    else
      'postmaster'
    end
  else
    'postgres'
  end

describe process(postgres) do
  it { should be_running }
end

describe port(5432) do
  it { should be_listening.with('tcp') }
end
```

Fix postgresql integration tests on CentOS 5
user
```ruby
# encoding: UTF-8
#
# Author:: Xabier de Zuazo (<xabier@zuazo.org>)
# Copyright:: Copyright (c) 2015 Onddo Labs, SL.
# License:: Apache License, Version 2.0
#
# 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_relative '../../../kitchen/data/spec_helper'

family = os[:family].downcase
release = os[:release].to_i

postgres =
  if %w(centos redhat scientific amazon).include?(family)
    if centos? && release >= 7
      'postgres'
    else
      'postmaster'
    end
  else
    'postgres'
  end

describe process(postgres) do
  it { should be_running }
end

describe port(5432) do
  it { should be_listening.with('tcp') }
end
```
assistant