#
# Copyright (C) 2013 eNovance SAS <licensing@enovance.com>
#
# Author: Emilien Macchi <emilien.macchi@enovance.com>
#
# 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.
#
# Unit tests for neutron::agents::vpnaas class
#

require 'spec_helper'

describe 'neutron::agents::vpnaas' do
  let :pre_condition do
    "class { 'neutron': }"
  end

  let :params do
    {}
  end

  let :default_params do
    {
      :package_ensure    => 'present',
      :vpn_device_driver => 'neutron.services.vpn.device_drivers.ipsec.OpenSwanDriver',
      :interface_driver  => 'neutron.agent.linux.interface.OVSInterfaceDriver',
      :purge_config      => false,
    }
  end

  shared_examples 'neutron vpnaas agent' do
    let :p do
      default_params.merge(params)
    end

    it { should contain_class('neutron::params') }

    it_behaves_like 'openswan vpnaas_driver'

    it 'passes purge to resource' do
      should contain_resources('neutron_vpnaas_agent_config').with({
        :purge => false
      })
    end

    it 'configures vpnaas_agent.ini' do
      should contain_neutron_vpnaas_agent_config('vpnagent/vpn_device_driver').with_value(p[:vpn_device_driver]);
      should contain_neutron_vpnaas_agent_config('ipsec/ipsec_status_check_interval').with_value('<SERVICE DEFAULT>');
      should contain_neutron_vpnaas_agent_config('DEFAULT/interface_driver').with_value(p[:interface_driver]);
    end

    it 'installs neutron vpnaas agent package' do
      if platform_params.has_key?(:vpnaas_agent_package)
        should contain_package('neutron-vpnaas-agent').with(
          :name   => platform_params[:vpnaas_agent_package],
          :ensure => p[:package_ensure],
          :tag    => ['openstack', 'neutron-package'],
        )
        should contain_package('neutron').that_requires('Anchor[neutron::install::begin]')
        should contain_package('neutron').that_notifies('Anchor[neutron::install::end]')
      end
    end
  end

  shared_examples 'openswan vpnaas_driver' do
    it 'installs openswan packages' do
      if platform_params.has_key?(:vpnaas_agent_package)
        should contain_package('openswan')
      end
      should contain_package('openswan').with(
        :ensure => 'present',
        :name   => platform_params[:openswan_package]
      )
    end
  end

  shared_examples 'neutron::agents::vpnaas on Debian' do
    context 'when configuring the LibreSwan driver' do
      before do
        params.merge!(
          :vpn_device_driver => 'neutron_vpnaas.services.vpn.device_drivers.libreswan_ipsec.LibreSwanDriver'
        )
      end

      it 'fails when configuring LibreSwan on Debian' do
        should raise_error(Puppet::Error, /LibreSwan is not supported on osfamily Debian/)
      end
    end
  end

  shared_examples 'neutron::agents::vpnaas on RedHat' do
    context 'when configuring the LibreSwan driver' do
      before do
        params.merge!(
          :vpn_device_driver => 'neutron_vpnaas.services.vpn.device_drivers.libreswan_ipsec.LibreSwanDriver'
        )
      end

      it 'configures LibreSwan' do
        should contain_neutron_vpnaas_agent_config('vpnagent/vpn_device_driver').with_value(params[:vpn_device_driver]);
        should contain_package('libreswan').with(
          :ensure => 'present',
          :name   => platform_params[:libreswan_package]
        )
      end
    end
  end

  on_supported_os({
    :supported_os => OSDefaults.get_supported_os
  }).each do |os,facts|
    context "on #{os}" do
      let (:facts) do
        facts.merge!(OSDefaults.get_facts())
      end

      let (:platform_params) do
        case facts[:osfamily]
        when 'Debian'
          {
            :openswan_package     => 'strongswan',
            :vpnaas_agent_package => 'neutron-vpn-agent'
          }
        when 'RedHat'
          {
            :openswan_package     => 'libreswan',
            :libreswan_package    => 'libreswan',
            :vpnaas_agent_package => 'openstack-neutron-vpnaas'
          }
        end
      end

      it_behaves_like "neutron::agents::vpnaas on #{facts[:osfamily]}"

      if facts[:osfamily] == 'RedHat'
        it_behaves_like 'neutron vpnaas agent'
      end
    end
  end
end