#
# 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::plugins::ml2 class
#

require 'spec_helper'

describe 'neutron::plugins::ml2' do

  let :pre_condition do
    "class { 'neutron':
      core_plugin     => 'ml2' }"
  end

  let :default_params do
    { :type_drivers          => ['local', 'flat', 'vlan', 'gre', 'vxlan', 'geneve'],
      :tenant_network_types  => ['local', 'flat', 'vlan', 'gre', 'vxlan'],
      :mechanism_drivers     => ['openvswitch', 'linuxbridge'],
      :flat_networks         => '*',
      :network_vlan_ranges   => '10:50',
      :tunnel_id_ranges      => '20:100',
      :vxlan_group           => '224.0.0.1',
      :vni_ranges            => '10:100',
      :path_mtu              => '0',
      :physical_network_mtus => '',
      :package_ensure        => 'present',
      :purge_config          => false, }
  end

  let :test_facts do
    { :operatingsystem           => 'default',
      :operatingsystemrelease    => 'default'
    }
  end

  let :params do
    {}
  end

  shared_examples_for 'neutron plugin ml2' do
    let :p do
      default_params.merge(params)
    end

    it { is_expected.to contain_class('neutron::params') }

    it 'configures neutron.conf' do
        is_expected.to contain_neutron_config('DEFAULT/core_plugin').with_value('ml2')
    end

    it 'passes purge to resource' do
      is_expected.to contain_resources('neutron_plugin_ml2').with({
        :purge => false
      })
    end

    it 'configures ml2_conf.ini' do
      is_expected.to contain_neutron_plugin_ml2('ml2/type_drivers').with_value(p[:type_drivers].join(','))
      is_expected.to contain_neutron_plugin_ml2('ml2/tenant_network_types').with_value(p[:tenant_network_types].join(','))
      is_expected.to contain_neutron_plugin_ml2('ml2/mechanism_drivers').with_value(p[:mechanism_drivers].join(','))
      is_expected.to contain_neutron_plugin_ml2('ml2/extension_drivers').with_value('<SERVICE DEFAULT>')
      is_expected.to contain_neutron_plugin_ml2('ml2/path_mtu').with_value(p[:path_mtu])
      is_expected.to contain_neutron_plugin_ml2('ml2/physical_network_mtus').with_ensure('absent')
      is_expected.to contain_neutron_plugin_ml2('ml2/overlay_ip_version').with_value('<SERVICE DEFAULT>')
      is_expected.to contain_neutron_plugin_ml2('securitygroup/firewall_driver').with_value('<SERVICE DEFAULT>')
      is_expected.to contain_neutron_plugin_ml2('securitygroup/enable_security_group').with_value('<SERVICE DEFAULT>')
    end

    it 'creates plugin symbolic link' do
      is_expected.to contain_file('/etc/neutron/plugin.ini').with(
        :ensure  => 'link',
        :target  => '/etc/neutron/plugins/ml2/ml2_conf.ini'
      )
    end

    it 'installs ml2 package (if any)' do
      if platform_params.has_key?(:ml2_server_package)
        is_expected.to contain_package('neutron-plugin-ml2').with(
          :name   => platform_params[:ml2_server_package],
          :ensure => p[:package_ensure],
          :tag    => ['neutron-package', 'openstack'],
        )
        is_expected.to contain_package('neutron-plugin-ml2').that_requires('Anchor[neutron::install::begin]')
        is_expected.to contain_package('neutron-plugin-ml2').that_notifies('Anchor[neutron::install::end]')
      end
    end


    context 'when overriding security group options' do
      before :each do
        params.merge!(
          :enable_security_group => true,
          :firewall_driver       => 'iptables_hybrid',
        )
      end
      it 'configures enable_security_group and firewall_driver options' do
        is_expected.to contain_neutron_plugin_ml2('securitygroup/enable_security_group').with_value('true')
        is_expected.to contain_neutron_plugin_ml2('securitygroup/firewall_driver').with_value('iptables_hybrid')
      end
    end

    context 'when specifying IPv4 overlays' do
      before :each do
        params.merge!(:overlay_ip_version => 4)
      end
      it 'configures as IPv4' do
        is_expected.to contain_neutron_plugin_ml2('ml2/overlay_ip_version').with_value(4)
      end
    end

    context 'when specifying IPv6 overlays' do
      before :each do
        params.merge!(:overlay_ip_version => 6)
      end
      it 'configures as IPv6' do
        is_expected.to contain_neutron_plugin_ml2('ml2/overlay_ip_version').with_value(6)
      end
    end

    context 'when specifying an invalid overlay IP versions' do
      before :each do
        params.merge!(:overlay_ip_version => 10)
      end
      it 'fails to accept value' do
        is_expected.to raise_error(Puppet::Error)
      end
    end

    context 'when using extension drivers for ML2 plugin' do
      before :each do
        params.merge!(:extension_drivers => ['port_security','qos'])
      end

      it 'configures extension drivers' do
        is_expected.to contain_neutron_plugin_ml2('ml2/extension_drivers').with_value(p[:extension_drivers].join(','))
      end
    end

    context 'configure ml2 with bad driver value' do
      before :each do
       scope.expects(:warning).with('type_driver unknown.')
       params.merge!(:type_drivers => ['foobar'])
      end
    end

    context 'when using flat driver' do
      before :each do
        params.merge!(:flat_networks => ['eth1', 'eth2'])
      end
      it 'configures flat_networks' do
        is_expected.to contain_neutron_plugin_ml2('ml2_type_flat/flat_networks').with_value(p[:flat_networks].join(','))
      end
    end

    context 'when using gre driver with valid values' do
      before :each do
        params.merge!(:tunnel_id_ranges => ['0:20', '40:60'])
      end
      it 'configures gre_networks with valid ranges' do
        is_expected.to contain_neutron_plugin_ml2('ml2_type_gre/tunnel_id_ranges').with_value(p[:tunnel_id_ranges].join(','))
      end
    end

    context 'when using gre driver with invalid values' do
      before :each do
       params.merge!(:tunnel_id_ranges => ['0:20', '40:100000000'])
      end

      it_raises 'a Puppet::Error', /tunnel id ranges are to large./
    end

    context 'when using vlan driver with valid values' do
      before :each do
        params.merge!(:network_vlan_ranges => ['1:20', '400:4094'])
      end
      it 'configures vlan_networks with 1:20 and 400:4094 VLAN ranges' do
        is_expected.to contain_neutron_plugin_ml2('ml2_type_vlan/network_vlan_ranges').with_value(p[:network_vlan_ranges].join(','))
      end
    end

    context 'when using vlan driver with invalid vlan id' do
      before :each do
       params.merge!(:network_vlan_ranges => ['1:20', '400:4099'])
      end

      it_raises 'a Puppet::Error', /vlan id are invalid./
    end

    context 'when using vlan driver with invalid vlan range' do
      before :each do
        params.merge!(:network_vlan_ranges => ['2938:1'])
      end

      it_raises 'a Puppet::Error', /vlan ranges are invalid./
    end

    context 'when using vxlan driver with valid values' do
      before :each do
        params.merge!(:vni_ranges => ['40:300', '500:1000'], :vxlan_group => '224.1.1.1')
      end
      it 'configures vxlan_networks with 224.1.1.1 vxlan group' do
        is_expected.to contain_neutron_plugin_ml2('ml2_type_vxlan/vni_ranges').with_value(p[:vni_ranges].join(','))
        is_expected.to contain_neutron_plugin_ml2('ml2_type_vxlan/vxlan_group').with_value(p[:vxlan_group])
      end
    end

    context 'when using vxlan driver with invalid vxlan group' do
      before :each do
        params.merge!(:vxlan_group => '192.1.1.1')
      end

      it_raises 'a Puppet::Error', /is not valid for vxlan_group./
    end

    context 'when using vxlan driver with invalid vni_range' do
      before :each do
        params.merge!(:vni_ranges => ['2938:1'])
      end

      it_raises  'a Puppet::Error', /vni ranges are invalid./
    end

    context 'when using geneve driver' do
      before :each do
        params.merge!(:type_drivers    => ['local', 'flat', 'vlan', 'gre', 'vxlan', 'geneve'],
                      :vni_ranges      => ['40:300','500:1000'],
                      :max_header_size => 50
        )
      end

      it 'configures geneve with valid values' do
        is_expected.to contain_neutron_plugin_ml2('ml2/type_drivers').with_value(p[:type_drivers].join(','))
        is_expected.to contain_neutron_plugin_ml2('ml2_type_geneve/vni_ranges').with_value([p[:vni_ranges].join(',')])
        is_expected.to contain_neutron_plugin_ml2('ml2_type_geneve/max_header_size').with_value(p[:max_header_size])
      end
    end

    context 'with path_mtu set' do
      before :each do
        params.merge!(:path_mtu => '9000')
      end

      it 'should set the path_mtu on the ml2 plugin' do
        is_expected.to contain_neutron_plugin_ml2('ml2/path_mtu').with_value(p[:path_mtu])
      end
    end

    context 'with physical_network_mtus set' do
      before :each do
        params.merge!(:physical_network_mtus => ['physnet1:9000'])
      end

      it 'should set the physical_network_mtus on the ml2 plugin' do
        is_expected.to contain_neutron_plugin_ml2('ml2/physical_network_mtus').with_value(p[:physical_network_mtus].join(','))
      end
    end

    context 'when overriding package ensure state' do
      before :each do
        params.merge!(:package_ensure => 'latest')
      end
      it 'overrides package ensure state (if possible)' do
        if platform_params.has_key?(:ml2_server_package)
          is_expected.to contain_package('neutron-plugin-ml2').with(
            :name   => platform_params[:ml2_server_package],
            :ensure => params[:package_ensure],
            :tag    => ['neutron-package', 'openstack'],
          )
        end
      end
    end

    context 'on Ubuntu operating systems' do
      before do
        facts.merge!({:operatingsystem => 'Ubuntu'})
      end

      it 'configures /etc/default/neutron-server' do
        is_expected.to contain_file_line('/etc/default/neutron-server:NEUTRON_PLUGIN_CONFIG').with(
          :path    => '/etc/default/neutron-server',
          :match   => '^NEUTRON_PLUGIN_CONFIG=(.*)$',
          :line    => 'NEUTRON_PLUGIN_CONFIG=/etc/neutron/plugin.ini',
        )
        is_expected.to contain_file_line('/etc/default/neutron-server:NEUTRON_PLUGIN_CONFIG').that_requires('Anchor[neutron::config::begin]')
        is_expected.to contain_file_line('/etc/default/neutron-server:NEUTRON_PLUGIN_CONFIG').that_notifies('Anchor[neutron::config::end]')
      end
    end
  end

  context 'on Debian platforms' do
    let :facts do
      @default_facts.merge(test_facts.merge({
         :osfamily => 'Debian'
      }))
    end

    let :platform_params do
      {}
    end

    context 'on Ubuntu operating systems' do
      before do
        facts.merge!({:operatingsystem => 'Ubuntu'})
        platform_params.merge!(:ml2_server_package => 'neutron-plugin-ml2')
      end

      it_configures 'neutron plugin ml2'
    end

    context 'on non-Ubuntu operating systems' do
      before do
        facts.merge!({:operatingsystem => 'Debian'})
      end

      it_configures 'neutron plugin ml2'
    end
  end

  context 'on RedHat platforms' do
    let :facts do
      @default_facts.merge(test_facts.merge({
         :osfamily               => 'RedHat',
         :operatingsystemrelease => '7'
      }))
    end

    let :platform_params do
      { :ml2_server_package => 'openstack-neutron-ml2' }
    end

    it_configures 'neutron plugin ml2'
  end

end