diff --git a/Gemfile b/Gemfile
index bdf11ff83..6181b3bed 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,6 +3,7 @@ source ENV['GEM_SOURCE'] || "https://rubygems.org"
 group :development, :test do
   gem 'puppetlabs_spec_helper',               :require => 'false'
   gem 'rspec-puppet', '~> 2.2.0',             :require => 'false'
+  gem 'rspec-puppet-facts',                   :require => 'false'
   gem 'metadata-json-lint',                   :require => 'false'
   gem 'puppet-lint-param-docs',               :require => 'false'
   gem 'puppet-lint-absolute_classname-check', :require => 'false'
diff --git a/metadata.json b/metadata.json
index dfeb9b197..ffb856fbf 100644
--- a/metadata.json
+++ b/metadata.json
@@ -14,11 +14,11 @@
   ],
   "operatingsystem_support": [
     {
-      "operatingsystem": "Fedora",
-      "operatingsystemrelease": ["20"]
+      "operatingsystem": "RedHat",
+      "operatingsystemrelease": ["7"]
     },
     {
-      "operatingsystem": "RedHat",
+      "operatingsystem": "CentOS",
       "operatingsystemrelease": ["7"]
     }
   ],
diff --git a/spec/classes/tripleo_cluster_cassandra_spec.rb b/spec/classes/tripleo_cluster_cassandra_spec.rb
index 13be98ecb..3f7d471fc 100644
--- a/spec/classes/tripleo_cluster_cassandra_spec.rb
+++ b/spec/classes/tripleo_cluster_cassandra_spec.rb
@@ -19,15 +19,7 @@ require 'spec_helper'
 
 describe 'tripleo::cluster::cassandra' do
 
-  shared_examples_for 'cassandra cluster service' do
-
-    let :facts do
-      {
-        :hostname                  => 'host1.midonet',
-        :osfamily                  => 'RedHat',
-        :operatingsystemmajrelease => 7,
-      }
-    end
+  shared_examples_for 'tripleo::cluster::cassandra' do
 
     let :params do
       {
@@ -49,6 +41,14 @@ describe 'tripleo::cluster::cassandra' do
     end
   end
 
-  it_configures 'cassandra cluster service'
+  on_supported_os.each do |os, facts|
+    context "on #{os}" do
+      let(:facts) do
+        facts.merge({})
+      end
+
+      it_behaves_like 'tripleo::cluster::cassandra'
+    end
+  end
 
 end
diff --git a/spec/classes/tripleo_cluster_zookeeper_spec.rb b/spec/classes/tripleo_cluster_zookeeper_spec.rb
index ed46164a4..fc003b6c1 100644
--- a/spec/classes/tripleo_cluster_zookeeper_spec.rb
+++ b/spec/classes/tripleo_cluster_zookeeper_spec.rb
@@ -19,97 +19,68 @@ require 'spec_helper'
 
 describe 'tripleo::cluster::zookeeper' do
 
-  let :default_params do
-    {
-      :zookeeper_server_ips => ['23.43.2.34', '23.43.2.35', '24.43.2.36'],
-      :zookeeper_hostnames  => ['host1.midonet', 'host2.midonet', 'host3.midonet']
-    }
-  end
-
-  context 'on host1' do
-    let :facts do
+  shared_examples_for 'tripleo::cluster::zookeeper' do
+    let :params do
       {
-        :hostname                  => 'host1.midonet',
-        :osfamily                  => 'RedHat',
-        :operatingsystemmajrelease => 7,
+        :zookeeper_server_ips => ['23.43.2.34', '23.43.2.35', '24.43.2.36'],
+        :zookeeper_hostnames  => ['host1.midonet', 'host2.midonet', 'host3.midonet']
       }
     end
 
-    let :params do
-    {
-      :zookeeper_client_ip => '23.43.2.34'
-    }
+    context 'on host1' do
+      before :each do
+        facts.merge!({ :hostname => 'host1.midonet'})
+        params.merge!({ :zookeeper_client_ip => '23.43.2.34' })
+      end
+
+      it 'should call zookeeper using id==1' do
+        is_expected.to contain_class('zookeeper').with(
+          :servers   => ['23.43.2.34', '23.43.2.35', '24.43.2.36'],
+          :client_ip => '23.43.2.34',
+          :id        => 1
+        )
+      end
     end
 
-    before do
-      params.merge!(default_params)
+    context 'on host2' do
+      before :each do
+        facts.merge!({ :hostname => 'host2.midonet'})
+        params.merge!({ :zookeeper_client_ip => '23.43.2.35' })
+      end
+
+      it 'should call zookeeper using id==1' do
+        is_expected.to contain_class('zookeeper').with(
+          :servers   => ['23.43.2.34', '23.43.2.35', '24.43.2.36'],
+          :client_ip => '23.43.2.35',
+          :id        => 2
+        )
+      end
     end
 
-    it 'should call zookeeper using id==1' do
-      is_expected.to contain_class('zookeeper').with(
-        :servers   => ['23.43.2.34', '23.43.2.35', '24.43.2.36'],
-        :client_ip => '23.43.2.34',
-        :id        => 1
-      )
-    end
+    context 'on host3' do
+      before :each do
+        facts.merge!({ :hostname => 'host3.midonet'})
+        params.merge!({ :zookeeper_client_ip => '23.43.2.36' })
+      end
 
-  end
+      it 'should call zookeeper using id==1' do
+        is_expected.to contain_class('zookeeper').with(
+          :servers   => ['23.43.2.34', '23.43.2.35', '24.43.2.36'],
+          :client_ip => '23.43.2.36',
+          :id        => 3
+        )
+      end
 
-  context 'on host2' do
-    let :facts do
-      {
-        :hostname                  => 'host2.midonet',
-        :osfamily                  => 'RedHat',
-        :operatingsystemmajrelease => 7,
-      }
-    end
-
-    let :params do
-    {
-      :zookeeper_client_ip => '23.43.2.35'
-    }
-    end
-
-    before do
-      params.merge!(default_params)
-    end
-
-    it 'should call zookeeper using id==1' do
-      is_expected.to contain_class('zookeeper').with(
-        :servers   => ['23.43.2.34', '23.43.2.35', '24.43.2.36'],
-        :client_ip => '23.43.2.35',
-        :id        => 2
-      )
     end
   end
 
-  context 'on host3' do
-    let :facts do
-      {
-        :hostname                  => 'host3.midonet',
-        :osfamily                  => 'RedHat',
-        :operatingsystemmajrelease => 7,
-      }
-    end
+  on_supported_os.each do |os, facts|
+    context "on #{os}" do
+      let(:facts) do
+        facts.merge({})
+      end
 
-    let :params do
-    {
-      :zookeeper_client_ip => '23.43.2.36'
-    }
+      it_behaves_like 'tripleo::cluster::zookeeper'
     end
-
-    before do
-      params.merge!(default_params)
-    end
-
-    it 'should call zookeeper using id==1' do
-      is_expected.to contain_class('zookeeper').with(
-        :servers   => ['23.43.2.34', '23.43.2.35', '24.43.2.36'],
-        :client_ip => '23.43.2.36',
-        :id        => 3
-      )
-    end
-
   end
-
 end
diff --git a/spec/classes/tripleo_firewall_spec.rb b/spec/classes/tripleo_firewall_spec.rb
index 27ac62a75..1270aa71a 100644
--- a/spec/classes/tripleo_firewall_spec.rb
+++ b/spec/classes/tripleo_firewall_spec.rb
@@ -24,7 +24,7 @@ describe 'tripleo::firewall' do
     { }
   end
 
-  shared_examples_for 'tripleo node' do
+  shared_examples_for 'tripleo::firewall' do
 
     context 'with firewall enabled' do
       before :each do
@@ -114,23 +114,13 @@ describe 'tripleo::firewall' do
 
   end
 
-  context 'on Debian platforms' do
-    let :facts do
-      { :osfamily => 'Debian' }
+  on_supported_os.each do |os, facts|
+    context "on #{os}" do
+      let(:facts) do
+        facts.merge({})
+      end
+
+      it_behaves_like 'tripleo::firewall'
     end
-
-    it_configures 'tripleo node'
   end
-
-  context 'on RedHat platforms' do
-    let :facts do
-      {
-        :osfamily               => 'RedHat',
-        :operatingsystemrelease => '7.1',
-      }
-    end
-
-    it_configures 'tripleo node'
-  end
-
 end
diff --git a/spec/classes/tripleo_host_sriov_spec.rb b/spec/classes/tripleo_host_sriov_spec.rb
index 15d381338..920eb9b15 100644
--- a/spec/classes/tripleo_host_sriov_spec.rb
+++ b/spec/classes/tripleo_host_sriov_spec.rb
@@ -2,15 +2,7 @@ require 'spec_helper'
 
 describe 'tripleo::host::sriov' do
 
-  shared_examples_for 'sriov vfs configuration for Red Hat distributions' do
-
-    let :facts do
-      {
-        :osfamily                  => 'RedHat',
-        :operatingsystemmajrelease => 7,
-      }
-    end
-
+  shared_examples_for 'tripleo::host::sriov' do
     let :params do
       {:number_of_vfs => []}
     end
@@ -35,5 +27,13 @@ describe 'tripleo::host::sriov' do
     end
   end
 
-  it_configures 'sriov vfs configuration for Red Hat distributions'
+  on_supported_os.each do |os, facts|
+    context "on #{os}" do
+      let(:facts) do
+        facts.merge({})
+      end
+
+      it_behaves_like 'tripleo::host::sriov'
+    end
+  end
 end
diff --git a/spec/classes/tripleo_midonet_agent_spec.rb b/spec/classes/tripleo_midonet_agent_spec.rb
index eb3abfe85..73d90b64c 100644
--- a/spec/classes/tripleo_midonet_agent_spec.rb
+++ b/spec/classes/tripleo_midonet_agent_spec.rb
@@ -19,17 +19,7 @@ require 'spec_helper'
 
 describe 'tripleo::network::midonet::agent' do
 
-  let :facts do
-    {
-      :hostname                  => 'host2.midonet',
-      :osfamily                  => 'RedHat',
-      :operatingsystem           => 'CentOS',
-      :operatingsystemrelease    => '7.1',
-      :operatingsystemmajrelease => 7,
-    }
-  end
-
-  shared_examples_for 'midonet agent test' do
+  shared_examples_for 'tripleo::network::midonet::agent' do
 
     let :params do
       {
@@ -56,7 +46,13 @@ describe 'tripleo::network::midonet::agent' do
     end
   end
 
-  it_configures 'midonet agent test'
-
+  on_supported_os.each do |os, facts|
+    context "on #{os}" do
+      let(:facts) do
+        facts.merge({})
+      end
 
+      it_behaves_like 'tripleo::network::midonet::agent'
+    end
+  end
 end
diff --git a/spec/classes/tripleo_midonet_api_spec.rb b/spec/classes/tripleo_midonet_api_spec.rb
index 4b4729494..25b375b3e 100644
--- a/spec/classes/tripleo_midonet_api_spec.rb
+++ b/spec/classes/tripleo_midonet_api_spec.rb
@@ -19,13 +19,7 @@ require 'spec_helper'
 
 describe 'tripleo::network::midonet::api' do
 
-  let :facts do
-    {
-      :augeasversion => '1.0.0'
-    }
-  end
-
-  shared_examples_for 'midonet api test' do
+  shared_examples_for 'tripleo::midonet::api' do
 
     let :params do
       {
@@ -67,6 +61,16 @@ describe 'tripleo::network::midonet::api' do
 
   end
 
-  it_configures 'midonet api test'
+  on_supported_os.each do |os, facts|
+    context "on #{os}" do
+      let(:facts) do
+        facts.merge({
+           :augeasversion => '1.0.0'
+        })
+      end
+
+      it_behaves_like 'tripleo::midonet::api'
+    end
+  end
 
 end
diff --git a/spec/classes/tripleo_packages_spec.rb b/spec/classes/tripleo_packages_spec.rb
index 80e5d7ea5..076d9cda5 100644
--- a/spec/classes/tripleo_packages_spec.rb
+++ b/spec/classes/tripleo_packages_spec.rb
@@ -17,19 +17,12 @@ require 'spec_helper'
 
 describe 'tripleo::packages' do
 
-  shared_examples_for 'Red Hat distributions' do
+  shared_examples_for 'tripleo::packages' do
 
     let :pre_condition do
       "service{'nova-compute': ensure => 'running'}"
     end
 
-    let :facts do
-      {
-        :osfamily                  => 'RedHat',
-        :operatingsystemmajrelease => 7,
-      }
-    end
-
     let :params do
       {
         :enable_upgrade => true
@@ -43,6 +36,15 @@ describe 'tripleo::packages' do
 
   end
 
-  it_configures 'Red Hat distributions'
+
+  on_supported_os.each do |os, facts|
+    context "on #{os}" do
+      let(:facts) do
+        facts.merge({})
+      end
+
+      it_behaves_like 'tripleo::packages'
+    end
+  end
 
 end
diff --git a/spec/classes/tripleo_profile_base_swift_proxy_spec.rb b/spec/classes/tripleo_profile_base_swift_proxy_spec.rb
index c1febabb7..68d7dde7d 100644
--- a/spec/classes/tripleo_profile_base_swift_proxy_spec.rb
+++ b/spec/classes/tripleo_profile_base_swift_proxy_spec.rb
@@ -21,7 +21,7 @@ describe 'tripleo::profile::base::swift::proxy' do
     { }
   end
 
-  shared_examples_for 'tripleo swift proxy base profile' do
+  shared_examples_for 'tripleo::profile::base::swift::proxy' do
 
     let :pre_condition do
       "class { '::swift':
@@ -80,25 +80,13 @@ describe 'tripleo::profile::base::swift::proxy' do
 
   end
 
-  context 'on Debian platforms' do
-    let :facts do
-      { :osfamily       => 'Debian',
-        :processorcount => 1 }
+  on_supported_os.each do |os, facts|
+    context "on #{os}" do
+      let(:facts) do
+        facts.merge({})
+      end
+
+      it_behaves_like 'tripleo::profile::base::swift::proxy'
     end
-
-    it_configures 'tripleo swift proxy base profile'
   end
-
-  context 'on RedHat platforms' do
-    let :facts do
-      {
-        :osfamily               => 'RedHat',
-        :operatingsystemrelease => '7.1',
-        :processorcount         => 1,
-      }
-    end
-
-    it_configures 'tripleo swift proxy base profile'
-  end
-
 end
diff --git a/spec/classes/tripleo_selinux_spec.rb b/spec/classes/tripleo_selinux_spec.rb
index 301006b9f..f49f87bfa 100644
--- a/spec/classes/tripleo_selinux_spec.rb
+++ b/spec/classes/tripleo_selinux_spec.rb
@@ -19,11 +19,14 @@ require 'spec_helper'
 
 describe 'tripleo::selinux' do
 
-  shared_examples_for 'manage selinux' do
+  shared_examples_for 'tripleo::selinux' do
 
     context 'with selinux enforcing' do
       before :each do
-        facts.merge!( :selinux_current_mode => 'enforcing' )
+        facts.merge!({
+          :selinux              => true,
+          :selinux_current_mode => 'enforcing'
+        })
       end
 
       let :params do
@@ -55,7 +58,7 @@ describe 'tripleo::selinux' do
 
     context 'with selinux disabled' do
       before :each do
-        facts.merge!( :selinux => 'false' )
+        facts.merge!({ :selinux => 'false' })
       end
 
       let :params do
@@ -89,18 +92,19 @@ describe 'tripleo::selinux' do
 
   context 'on Debian platforms' do
     let :facts do
-      { :osfamily               => 'Debian' }
+      { :osfamily => 'Debian' }
     end
 
     it_raises 'a Puppet::Error', /OS family unsuppored yet \(Debian\), SELinux support is only limited to RedHat family OS/
   end
 
-  context 'on RedHat platforms' do
-    let :facts do
-      { :osfamily => 'RedHat' }
+  on_supported_os.each do |os, facts|
+    context "on #{os}" do
+      let(:facts) do
+        facts.merge({})
+      end
+
+      it_behaves_like 'tripleo::selinux'
     end
-
-    it_configures 'manage selinux'
   end
-
 end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 251160ea5..be9532a21 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,5 +1,7 @@
 require 'puppetlabs_spec_helper/module_spec_helper'
 require 'shared_examples'
+require 'rspec-puppet-facts'
+include RspecPuppetFacts
 
 fixture_path = File.expand_path(File.join(__FILE__, '..', 'fixtures'))
 
@@ -10,14 +12,8 @@ RSpec.configure do |c|
   c.module_path = File.join(fixture_path, 'modules')
   c.manifest_dir = File.join(fixture_path, 'manifests')
 
-  c.default_facts = {
-    :kernel         => 'Linux',
-    :concat_basedir => '/var/lib/puppet/concat',
-    :memorysize     => '1000 MB',
-    :processorcount => '1',
-    :puppetversion  => '3.7.3',
-    :uniqueid       => '123'
-  }
+  # custom global facts for all rspec tests
+  add_custom_fact :concat_basedir, '/var/lib/puppet/concat'
 end
 
 at_exit { RSpec::Puppet::Coverage.report! }