```ruby
require 'spec_helper_acceptance'

# These tests ensure that postgres can change itself to an alternative pgdata
# location properly.

# Allow postgresql to use /tmp/* as a datadir
if fact('osfamily') == 'RedHat'
  shell("setenforce 0")
end

describe 'postgres::server', :unless => UNSUPPORTED_PLATFORMS.include?(fact('osfamily')) do
  it 'on an alternative pgdata location' do
    pp = <<-EOS
      #file { '/var/lib/pgsql': ensure => directory, } ->
      # needs_initdb will be true by default for all OS's except Debian
      # in order to change the datadir we need to tell it explicitly to call initdb
      class { 'postgresql::server': datadir => '/tmp/data', needs_initdb => true }
    EOS

    apply_manifest(pp, :catch_failures => true)
    apply_manifest(pp, :catch_changes => true)
  end

  describe file('/tmp/data') do
    it { should be_directory }
  end

  it 'can connect with psql' do
    psql('--command="\l" postgres', 'postgres') do |r|
      expect(r.stdout).to match(/List of databases/)
    end
  end

end
```

Fix for not running acceptance tests on CentOS box
user
```ruby
require 'spec_helper_acceptance'

# These tests ensure that postgres can change itself to an alternative pgdata
# location properly.

# Allow postgresql to use /tmp/* as a datadir
if fact('osfamily') == 'RedHat' and fact('selinux') == true
  shell 'setenforce 0'
end

describe 'postgres::server', :unless => UNSUPPORTED_PLATFORMS.include?(fact('osfamily')) do
  it 'on an alternative pgdata location' do
    pp = <<-EOS
      #file { '/var/lib/pgsql': ensure => directory, } ->
      # needs_initdb will be true by default for all OS's except Debian
      # in order to change the datadir we need to tell it explicitly to call initdb
      class { 'postgresql::server': datadir => '/tmp/data', needs_initdb => true }
    EOS

    apply_manifest(pp, :catch_failures => true)
    apply_manifest(pp, :catch_changes => true)
  end

  describe file('/tmp/data') do
    it { should be_directory }
  end

  it 'can connect with psql' do
    psql('--command="\l" postgres', 'postgres') do |r|
      expect(r.stdout).to match(/List of databases/)
    end
  end

end
```
assistant