diff --git a/manifests/init.pp b/manifests/init.pp
index d2aead9..fcfb09c 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -1,319 +1,344 @@
 # @summary Main class, includes all other classes.
 #
 # @see https://docs.puppetlabs.com/references/latest/function.html#createresources for the create resource function
 #
 # @param provider
 #   Specifies the provider that should be used by apt::update.
 #
 # @param keyserver
 #   Specifies a keyserver to provide the GPG key. Valid options: a string containing a domain name or a full URL (http://, https://, or
 #   hkp://).
 #
 # @param key_options
 #   Specifies the default options for apt::key resources.
 #
 # @param ppa_options
 #   Supplies options to be passed to the `add-apt-repository` command.
 #
 # @param ppa_package
 #   Names the package that provides the `apt-add-repository` command.
 #
 # @param backports
 #   Specifies some of the default parameters used by apt::backports. Valid options: a hash made up from the following keys:
 #
 # @option backports [String] :location
 #   See apt::backports for documentation.
 #
 # @option backports [String] :repos
 #   See apt::backports for documentation.
 #
 # @option backports [String] :key
 #   See apt::backports for documentation.
 #
 # @param confs
 #   Creates new `apt::conf` resources. Valid options: a hash to be passed to the create_resources function linked above.
 #
 # @param update
 #   Configures various update settings. Valid options: a hash made up from the following keys:
 #
 # @option update [String] :frequency
 #   Specifies how often to run `apt-get update`. If the exec resource `apt_update` is notified, `apt-get update` runs regardless of this value.
 #   Valid options: 'always' (at every Puppet run); 'daily' (if the value of `apt_update_last_success` is less than current epoch time minus 86400);
 #   'weekly' (if the value of `apt_update_last_success` is less than current epoch time minus 604800); and 'reluctantly' (only if the exec resource
 #   `apt_update` is notified). Default: 'reluctantly'.
 #
 # @option update [Integer] :loglevel
 #   Specifies the log level of logs outputted to the console. Default: undef.
 #
 # @option update [Integer] :timeout
 #   Specifies how long to wait for the update to complete before canceling it. Valid options: an integer, in seconds. Default: undef.
 #
 # @option update [Integer] :tries
 #    Specifies how many times to retry the update after receiving a DNS or HTTP error. Default: undef.
 #
 # @param purge
 #   Specifies whether to purge any existing settings that aren't managed by Puppet. Valid options: a hash made up from the following keys:
 #
 # @option purge [Boolean] :sources.list
 #   Specifies whether to purge any unmanaged entries from sources.list. Default false.
 #
 # @option purge [Boolean] :sources.list.d
 #   Specifies whether to purge any unmanaged entries from sources.list.d. Default false.
 #
 # @option purge [Boolean] :preferences
 #   Specifies whether to purge any unmanaged entries from preferences. Default false.
 #
 # @option purge [Boolean] :preferences.d.
 #   Specifies whether to purge any unmanaged entries from preferences.d. Default false.
 #
 # @param proxy
 #   Configures Apt to connect to a proxy server. Valid options: a hash matching the locally defined type apt::proxy.
 #
 # @param sources
 #   Creates new `apt::source` resources. Valid options: a hash to be passed to the create_resources function linked above.
 #
 # @param keys
 #   Creates new `apt::key` resources. Valid options: a hash to be passed to the create_resources function linked above.
 #
 # @param ppas
 #   Creates new `apt::ppa` resources. Valid options: a hash to be passed to the create_resources function linked above.
 #
 # @param pins
 #   Creates new `apt::pin` resources. Valid options: a hash to be passed to the create_resources function linked above.
 #
 # @param settings
 #   Creates new `apt::setting` resources. Valid options: a hash to be passed to the create_resources function linked above.
 #
 # @param manage_auth_conf
 #   Specifies whether to manage the /etc/apt/auth.conf file. When true, the file will be overwritten with the entries specified in
 #   the auth_conf_entries parameter. When false, the file will be ignored (note that this does not set the file to absent.
 #
 # @param auth_conf_entries
 #   An optional array of login configuration settings (hashes) that are recorded in the file /etc/apt/auth.conf. This file has a netrc-like
 #   format (similar to what curl uses) and contains the login configuration for APT sources and proxies that require authentication. See
 #   https://manpages.debian.org/testing/apt/apt_auth.conf.5.en.html for details. If specified each hash must contain the keys machine, login and
 #   password and no others. Specifying manage_auth_conf and not specifying this parameter will set /etc/apt/auth.conf to absent.
 #
 # @param auth_conf_owner
 #   The owner of the file /etc/apt/auth.conf. Default: '_apt' or 'root' on old releases.
 #
 # @param root
 #   Specifies root directory of Apt executable.
 #
 # @param sources_list
 #   Specifies the path of the sources_list file to use.
 #
 # @param sources_list_d
 #   Specifies the path of the sources_list.d file to use.
 #
 # @param conf_d
 #   Specifies the path of the conf.d file to use.
 #
 # @param preferences
 #   Specifies the path of the preferences file to use.
 #
 # @param preferences_d
 #   Specifies the path of the preferences.d file to use.
 #
 # @param config_files
 #   A hash made up of the various configuration files used by Apt.
 #
+# @param sources_list_force
+#   Specifies whether to perform force purge or delete. Default false.
+#
 class apt (
   Hash $update_defaults         = $apt::params::update_defaults,
   Hash $purge_defaults          = $apt::params::purge_defaults,
   Hash $proxy_defaults          = $apt::params::proxy_defaults,
   Hash $include_defaults        = $apt::params::include_defaults,
   String $provider              = $apt::params::provider,
   String $keyserver             = $apt::params::keyserver,
   Optional[String] $key_options = $apt::params::key_options,
   Optional[String] $ppa_options = $apt::params::ppa_options,
   Optional[String] $ppa_package = $apt::params::ppa_package,
   Optional[Hash] $backports     = $apt::params::backports,
   Hash $confs                   = $apt::params::confs,
   Hash $update                  = $apt::params::update,
   Hash $purge                   = $apt::params::purge,
   Apt::Proxy $proxy             = $apt::params::proxy,
   Hash $sources                 = $apt::params::sources,
   Hash $keys                    = $apt::params::keys,
   Hash $ppas                    = $apt::params::ppas,
   Hash $pins                    = $apt::params::pins,
   Hash $settings                = $apt::params::settings,
   Boolean $manage_auth_conf     = $apt::params::manage_auth_conf,
   Array[Apt::Auth_conf_entry]
     $auth_conf_entries          = $apt::params::auth_conf_entries,
   String $auth_conf_owner       = $apt::params::auth_conf_owner,
   String $root                  = $apt::params::root,
   String $sources_list          = $apt::params::sources_list,
   String $sources_list_d        = $apt::params::sources_list_d,
   String $conf_d                = $apt::params::conf_d,
   String $preferences           = $apt::params::preferences,
   String $preferences_d         = $apt::params::preferences_d,
   String $apt_conf_d            = $apt::params::apt_conf_d,
   Hash $config_files            = $apt::params::config_files,
   Hash $source_key_defaults     = $apt::params::source_key_defaults,
+  Boolean $sources_list_force   = $apt::params::sources_list_force,
 ) inherits apt::params {
 
   if $facts['osfamily'] != 'Debian' {
     fail(translate('This module only works on Debian or derivatives like Ubuntu'))
   }
 
   if $update['frequency'] {
     assert_type(
       Enum['always','daily','weekly','reluctantly'],
       $update['frequency'],
     )
   }
   if $update['timeout'] {
     assert_type(Integer, $update['timeout'])
   }
   if $update['tries'] {
     assert_type(Integer, $update['tries'])
   }
 
   $_update = merge($::apt::update_defaults, $update)
   include ::apt::update
 
   if $purge['sources.list'] {
     assert_type(Boolean, $purge['sources.list'])
   }
   if $purge['sources.list.d'] {
     assert_type(Boolean, $purge['sources.list.d'])
   }
   if $purge['preferences'] {
     assert_type(Boolean, $purge['preferences'])
   }
   if $purge['preferences.d'] {
     assert_type(Boolean, $purge['preferences.d'])
   }
+  if $sources_list_force {
+    assert_type(Boolean, $sources_list_force)
+  }
   if $purge['apt.conf.d'] {
     assert_type(Boolean, $purge['apt.conf.d'])
   }
 
   $_purge = merge($::apt::purge_defaults, $purge)
   $_proxy = merge($apt::proxy_defaults, $proxy)
 
   $confheadertmp = epp('apt/_conf_header.epp')
   $proxytmp = epp('apt/proxy.epp', {'proxies' => $_proxy})
   $updatestamptmp = epp('apt/15update-stamp.epp')
 
   if $_proxy['ensure'] == 'absent' or $_proxy['host'] {
     apt::setting { 'conf-proxy':
       ensure   => $_proxy['ensure'],
       priority => '01',
       content  => "${confheadertmp}${proxytmp}",
     }
   }
 
-  $sources_list_ensure = $_purge['sources.list'] ? {
-    true    => absent,
-    default => file,
+  if $sources_list_force {
+    $sources_list_ensure = $_purge['sources.list'] ? {
+      true    => absent,
+      default  => file,
+    }
+    $sources_list_content = $_purge['sources.list'] ? {
+      true    => nil,
+      default => undef,
+    }
   }
+  else
+    {
+    $sources_list_ensure = $_purge['sources.list'] ? {
+      true    => file,
+      default => file,
+    }
+    $sources_list_content = $_purge['sources.list'] ? {
+      true    => "# Repos managed by puppet.\n",
+      default => undef,
+    }
+    }
 
   $preferences_ensure = $_purge['preferences'] ? {
     true    => absent,
     default => file,
   }
 
   if $_update['frequency'] == 'always' {
     Exec <| title=='apt_update' |> {
       refreshonly => false,
     }
   }
 
   apt::setting { 'conf-update-stamp':
     priority => 15,
     content  => "${confheadertmp}${updatestamptmp}",
   }
 
   file { 'sources.list':
-    ensure => $sources_list_ensure,
-    path   => $::apt::sources_list,
-    owner  => root,
-    group  => root,
-    notify => Class['apt::update'],
+    ensure  => $sources_list_ensure,
+    path    => $::apt::sources_list,
+    owner   => root,
+    group   => root,
+    content => $sources_list_content,
+    notify  => Class['apt::update'],
   }
 
   file { 'sources.list.d':
     ensure  => directory,
     path    => $::apt::sources_list_d,
     owner   => root,
     group   => root,
     purge   => $_purge['sources.list.d'],
     recurse => $_purge['sources.list.d'],
     notify  => Class['apt::update'],
   }
 
   file { 'preferences':
     ensure => $preferences_ensure,
     path   => $::apt::preferences,
     owner  => root,
     group  => root,
     notify => Class['apt::update'],
   }
 
   file { 'preferences.d':
     ensure  => directory,
     path    => $::apt::preferences_d,
     owner   => root,
     group   => root,
     purge   => $_purge['preferences.d'],
     recurse => $_purge['preferences.d'],
     notify  => Class['apt::update'],
   }
 
   file { 'apt.conf.d':
     ensure  => directory,
     path    => $::apt::apt_conf_d,
     owner   => root,
     group   => root,
     purge   => $_purge['apt.conf.d'],
     recurse => $_purge['apt.conf.d'],
     notify  => Class['apt::update'],
   }
 
   if $confs {
     create_resources('apt::conf', $confs)
   }
   # manage sources if present
   if $sources {
     create_resources('apt::source', $sources)
   }
   # manage keys if present
   if $keys {
     create_resources('apt::key', $keys)
   }
   # manage ppas if present
   if $ppas {
     create_resources('apt::ppa', $ppas)
   }
   # manage settings if present
   if $settings {
     create_resources('apt::setting', $settings)
   }
 
   if $manage_auth_conf {
     $auth_conf_ensure = $auth_conf_entries ? {
       []      => 'absent',
       default => 'present',
     }
 
     $auth_conf_tmp = epp('apt/auth_conf.epp')
 
     file { '/etc/apt/auth.conf':
       ensure  => $auth_conf_ensure,
       owner   => $auth_conf_owner,
       group   => 'root',
       mode    => '0600',
       content => "${confheadertmp}${auth_conf_tmp}",
       notify  => Class['apt::update'],
     }
   }
 
   # manage pins if present
   if $pins {
     create_resources('apt::pin', $pins)
   }
 
   # required for adding GPG keys on Debian 9 (and derivatives)
   ensure_packages(['gnupg'])
 }
diff --git a/manifests/params.pp b/manifests/params.pp
index 149e4c9..c648c4e 100644
--- a/manifests/params.pp
+++ b/manifests/params.pp
@@ -1,123 +1,124 @@
 # @summary Provides defaults for the Apt module parameters.
 # 
 # @api private
 #
 class apt::params {
 
   if $::osfamily != 'Debian' {
     fail(translate('This module only works on Debian or derivatives like Ubuntu'))
   }
 
-  $root           = '/etc/apt'
-  $provider       = '/usr/bin/apt-get'
-  $sources_list   = "${root}/sources.list"
-  $sources_list_d = "${root}/sources.list.d"
-  $trusted_gpg_d  = "${root}/trusted.gpg.d"
-  $conf_d         = "${root}/apt.conf.d"
-  $preferences    = "${root}/preferences"
-  $preferences_d  = "${root}/preferences.d"
-  $apt_conf_d     = "${root}/apt.conf.d"
-  $keyserver      = 'keyserver.ubuntu.com'
-  $key_options    = undef
-  $confs          = {}
-  $update         = {}
-  $purge          = {}
-  $proxy          = {}
-  $sources        = {}
-  $keys           = {}
-  $ppas           = {}
-  $pins           = {}
-  $settings       = {}
-  $manage_auth_conf = true
-  $auth_conf_entries = []
+  $root                 = '/etc/apt'
+  $provider             = '/usr/bin/apt-get'
+  $sources_list         = "${root}/sources.list"
+  $sources_list_force   = false
+  $sources_list_d       = "${root}/sources.list.d"
+  $trusted_gpg_d        = "${root}/trusted.gpg.d"
+  $conf_d               = "${root}/apt.conf.d"
+  $preferences          = "${root}/preferences"
+  $preferences_d        = "${root}/preferences.d"
+  $apt_conf_d           = "${root}/apt.conf.d"
+  $keyserver            = 'keyserver.ubuntu.com'
+  $key_options          = undef
+  $confs                = {}
+  $update               = {}
+  $purge                = {}
+  $proxy                = {}
+  $sources              = {}
+  $keys                 = {}
+  $ppas                 = {}
+  $pins                 = {}
+  $settings             = {}
+  $manage_auth_conf     = true
+  $auth_conf_entries    = []
 
   $config_files = {
     'conf'   => {
       'path' => $conf_d,
       'ext'  => '',
     },
     'pref'   => {
       'path' => $preferences_d,
       'ext'  => '.pref',
     },
     'list'   => {
       'path' => $sources_list_d,
       'ext'  => '.list',
     }
   }
 
   $update_defaults = {
     'frequency' => 'reluctantly',
     'loglevel'  => undef,
     'timeout'   => undef,
     'tries'     => undef,
   }
 
   $proxy_defaults = {
     'ensure'     => undef,
     'host'       => undef,
     'port'       => 8080,
     'https'      => false,
     'https_acng' => false,
     'direct'     => false,
   }
 
   $purge_defaults = {
     'sources.list'   => false,
     'sources.list.d' => false,
     'preferences'    => false,
     'preferences.d'  => false,
     'apt.conf.d'     => false,
   }
 
   $source_key_defaults = {
     'server'  => $keyserver,
     'options' => undef,
     'content' => undef,
     'source'  => undef,
   }
 
   $include_defaults = {
     'deb' => true,
     'src' => false,
   }
 
   case $facts['os']['name']{
     'Debian': {
           $backports = {
             'location' => 'http://deb.debian.org/debian',
             'repos'    => 'main contrib non-free',
           }
       $ppa_options = undef
       $ppa_package = undef
       if versioncmp($facts['os']['release']['major'], '9') >= 0 {
         $auth_conf_owner = '_apt'
       } else {
         $auth_conf_owner = 'root'
       }
     }
     'Ubuntu': {
       $backports = {
         'location' => 'http://archive.ubuntu.com/ubuntu',
         'key'      => '630239CC130E1A7FD81A27B140976EAF437D05B5',
         'repos'    => 'main universe multiverse restricted',
       }
       $ppa_options        = '-y'
       $ppa_package        = 'software-properties-common'
       if versioncmp($facts['os']['release']['full'], '16.04') >= 0 {
         $auth_conf_owner = '_apt'
       } else {
         $auth_conf_owner = 'root'
       }
     }
     undef: {
       fail(translate('Unable to determine value for fact os[\"name\"]'))
     }
     default: {
       $ppa_options = undef
       $ppa_package = undef
       $backports   = undef
       $auth_conf_owner = 'root'
     }
   }
 }
diff --git a/spec/classes/apt_spec.rb b/spec/classes/apt_spec.rb
index ca11d4a..84c6574 100644
--- a/spec/classes/apt_spec.rb
+++ b/spec/classes/apt_spec.rb
@@ -1,540 +1,608 @@
 require 'spec_helper'
 
 sources_list = {  ensure: 'file',
                   path: '/etc/apt/sources.list',
                   owner: 'root',
                   group: 'root',
                   notify: 'Class[Apt::Update]' }
 
 sources_list_d = { ensure: 'directory',
                    path: '/etc/apt/sources.list.d',
                    owner: 'root',
                    group: 'root',
                    purge: false,
                    recurse: false,
                    notify: 'Class[Apt::Update]' }
 
 preferences = { ensure: 'file',
                 path: '/etc/apt/preferences',
                 owner: 'root',
                 group: 'root',
                 notify: 'Class[Apt::Update]' }
 
 preferences_d = { ensure: 'directory',
                   path: '/etc/apt/preferences.d',
                   owner: 'root',
                   group: 'root',
                   purge: false,
                   recurse: false,
                   notify: 'Class[Apt::Update]' }
 
 apt_conf_d = {    ensure: 'directory',
                   path: '/etc/apt/apt.conf.d',
                   owner: 'root',
                   group: 'root',
                   purge: false,
                   recurse: false,
                   notify: 'Class[Apt::Update]' }
 
 describe 'apt' do
   let(:facts) do
     {
       os: { family: 'Debian', name: 'Debian', release: { major: '8', full: '8.0' } },
       lsbdistid: 'Debian',
       osfamily: 'Debian',
       lsbdistcodename: 'jessie',
     }
   end
 
   context 'with defaults' do
     it {
       is_expected.to contain_file('sources.list').that_notifies('Class[Apt::Update]').only_with(sources_list)
     }
 
     it {
       is_expected.to contain_file('sources.list.d').that_notifies('Class[Apt::Update]').only_with(sources_list_d)
     }
 
     it {
       is_expected.to contain_file('preferences').that_notifies('Class[Apt::Update]').only_with(preferences)
     }
 
     it {
       is_expected.to contain_file('preferences.d').that_notifies('Class[Apt::Update]').only_with(preferences_d)
     }
 
     it {
       is_expected.to contain_file('apt.conf.d').that_notifies('Class[Apt::Update]').only_with(apt_conf_d)
     }
 
     it { is_expected.to contain_file('/etc/apt/auth.conf').with_ensure('absent') }
 
     it 'lays down /etc/apt/apt.conf.d/15update-stamp' do
       is_expected.to contain_file('/etc/apt/apt.conf.d/15update-stamp').with(group: 'root',
                                                                              owner: 'root').with_content(
                                                                                %r{APT::Update::Post-Invoke-Success {"touch /var/lib/apt/periodic/update-success-stamp 2>/dev/null || true";};},
                                                                              )
     end
 
     it {
       is_expected.to contain_exec('apt_update').with(refreshonly: 'true')
     }
 
     it { is_expected.not_to contain_apt__setting('conf-proxy') }
   end
 
   describe 'proxy=' do
     context 'when host=localhost' do
       let(:params) { { proxy: { 'host' => 'localhost' } } }
 
       it {
         is_expected.to contain_apt__setting('conf-proxy').with(priority: '01').with_content(
           %r{Acquire::http::proxy "http://localhost:8080/";},
         ).without_content(
           %r{Acquire::https::proxy},
         )
       }
     end
 
     context 'when host=localhost and port=8180' do
       let(:params) { { proxy: { 'host' => 'localhost', 'port' => 8180 } } }
 
       it {
         is_expected.to contain_apt__setting('conf-proxy').with(priority: '01').with_content(
           %r{Acquire::http::proxy "http://localhost:8180/";},
         ).without_content(
           %r{Acquire::https::proxy},
         )
       }
     end
 
     context 'when host=localhost and https=true' do
       let(:params) { { proxy: { 'host' => 'localhost', 'https' => true } } }
 
       it {
         is_expected.to contain_apt__setting('conf-proxy').with(priority: '01').with_content(
           %r{Acquire::http::proxy "http://localhost:8080/";},
         ).with_content(
           %r{Acquire::https::proxy "https://localhost:8080/";},
         )
       }
     end
 
     context 'when host=localhost and direct=true' do
       let(:params) { { proxy: { 'host' => 'localhost', 'direct' => true } } }
 
       it {
         is_expected.to contain_apt__setting('conf-proxy').with(priority: '01').with_content(
           %r{Acquire::http::proxy "http://localhost:8080/";},
         ).with_content(
           %r{Acquire::https::proxy "DIRECT";},
         )
       }
     end
 
     context 'when host=localhost and https=true and direct=true' do
       let(:params) { { proxy: { 'host' => 'localhost', 'https' => true, 'direct' => true } } }
 
       it {
         is_expected.to contain_apt__setting('conf-proxy').with(priority: '01').with_content(
           %r{Acquire::http::proxy "http://localhost:8080/";},
         ).with_content(
           %r{Acquire::https::proxy "https://localhost:8080/";},
         )
       }
       it {
         is_expected.to contain_apt__setting('conf-proxy').with(priority: '01').with_content(
           %r{Acquire::http::proxy "http://localhost:8080/";},
         ).without_content(
           %r{Acquire::https::proxy "DIRECT";},
         )
       }
     end
 
     context 'when ensure=absent' do
       let(:params) { { proxy: { 'ensure' => 'absent' } } }
 
       it {
         is_expected.to contain_apt__setting('conf-proxy').with(ensure: 'absent',
                                                                priority: '01')
       }
     end
   end
   context 'with lots of non-defaults' do
     let :params do
       {
         update: { 'frequency' => 'always', 'timeout' => 1, 'tries' => 3 },
         purge: { 'sources.list' => false, 'sources.list.d' => false,
                  'preferences' => false, 'preferences.d' => false,
                  'apt.conf.d' => false },
       }
     end
 
     it {
       is_expected.to contain_file('sources.list').with(content: nil)
     }
 
     it {
       is_expected.to contain_file('sources.list.d').with(purge: false,
                                                          recurse: false)
     }
 
     it {
       is_expected.to contain_file('preferences').with(ensure: 'file')
     }
 
     it {
       is_expected.to contain_file('preferences.d').with(purge: false,
                                                         recurse: false)
     }
 
     it {
       is_expected.to contain_file('apt.conf.d').with(purge: false,
                                                      recurse: false)
     }
 
     it {
       is_expected.to contain_exec('apt_update').with(refreshonly: false,
                                                      timeout: 1,
                                                      tries: 3)
     }
   end
 
+  context 'with lots of non-defaults' do
+    let :params do
+      {
+        update: { 'frequency' => 'always', 'timeout' => 1, 'tries' => 3 },
+        purge: { 'sources.list' => true, 'sources.list.d' => true,
+                 'preferences' => true, 'preferences.d' => true,
+                 'apt.conf.d' => true },
+      }
+    end
+
+    it {
+      is_expected.to contain_file('sources.list').with(content: "# Repos managed by puppet.\n")
+    }
+
+    it {
+      is_expected.to contain_file('sources.list.d').with(purge: true,
+                                                         recurse: true)
+    }
+
+    it {
+      is_expected.to contain_file('preferences').with(ensure: 'absent')
+    }
+
+    it {
+      is_expected.to contain_file('preferences.d').with(purge: true,
+                                                        recurse: true)
+    }
+
+    it {
+      is_expected.to contain_file('apt.conf.d').with(purge: true,
+                                                     recurse: true)
+    }
+
+    it {
+      is_expected.to contain_exec('apt_update').with(refreshonly: false,
+                                                     timeout: 1,
+                                                     tries: 3)
+    }
+  end
+
+  context 'with defaults for sources_list_force' do
+    let :params do
+      {
+        update: { 'frequency' => 'always', 'timeout' => 1, 'tries' => 3 },
+        purge: { 'sources.list' => true },
+        sources_list_force: false,
+      }
+    end
+
+    it {
+      is_expected.to contain_file('sources.list').with(content: "# Repos managed by puppet.\n")
+    }
+  end
+
+  context 'with non defaults for sources_list_force' do
+    let :params do
+      {
+        update: { 'frequency' => 'always', 'timeout' => 1, 'tries' => 3 },
+        purge: { 'sources.list' => true },
+        sources_list_force: true,
+      }
+    end
+
+    it {
+      is_expected.to contain_file('sources.list').with(ensure: 'absent')
+    }
+  end
+
   context 'with entries for /etc/apt/auth.conf' do
     facts_hash = {
       'Ubuntu 14.04' => {
         os: { family: 'Debian', name: 'Ubuntu', release: { major: '14', full: '14.04' } },
         osfamily: 'Debian',
         lsbdistcodename: 'trusty',
         lsbdistid: 'Ubuntu',
         lsbdistrelease: '14.04',
       },
       'Ubuntu 16.04' => {
         os: { family: 'Debian', name: 'Ubuntu', release: { major: '16', full: '16.04' } },
         osfamily: 'Debian',
         lsbdistcodename: 'xenial',
         lsbdistid: 'Ubuntu',
         lsbdistrelease: '16.04',
       },
       'Ubuntu 18.04' => {
         os: { family: 'Debian', name: 'Ubuntu', release: { major: '18', full: '18.04' } },
         osfamily: 'Debian',
         lsbdistcodename: 'bionic',
         lsbdistid: 'Ubuntu',
         lsbdistrelease: '18.04',
       },
       'Debian 7.0' => {
         os: { family: 'Debian', name: 'Debian', release: { major: '7', full: '7.0' } },
         lsbdistid: 'Debian',
         osfamily: 'Debian',
         lsbdistcodename: 'wheezy',
       },
       'Debian 8.0' => {
         os: { family: 'Debian', name: 'Debian', release: { major: '8', full: '8.0' } },
         lsbdistid: 'Debian',
         osfamily: 'Debian',
         lsbdistcodename: 'jessie',
       },
       'Debian 9.0' => {
         os: { family: 'Debian', name: 'Debian', release: { major: '9', full: '9.0' } },
         lsbdistid: 'Debian',
         osfamily: 'Debian',
         lsbdistcodename: 'stretch',
       },
       'Debian 10.0' => {
         os: { family: 'Debian', name: 'Debian', release: { major: '10', full: '10.0' } },
         lsbdistid: 'Debian',
         osfamily: 'Debian',
         lsbdistcodename: 'buster',
       },
     }
 
     facts_hash.each do |os, facts|
       context "on #{os}" do
         let(:facts) do
           facts
         end
         let(:params) do
           {
             auth_conf_entries: [
               {
                 machine: 'deb.example.net',
                 login: 'foologin',
                 password: 'secret',
               },
               {
                 machine: 'apt.example.com',
                 login: 'aptlogin',
                 password: 'supersecret',
               },
             ],
           }
         end
 
         context 'with manage_auth_conf => true' do
           let(:params) do
             super().merge(manage_auth_conf: true)
           end
 
           # Going forward starting with Ubuntu 16.04 and Debian 9.0
           # /etc/apt/auth.conf is owned by _apt. In previous versions it is
           # root.
           auth_conf_owner = case os
                             when 'Ubuntu 14.04', 'Debian 7.0', 'Debian 8.0'
                               'root'
                             else
                               '_apt'
                             end
 
           auth_conf_content = "// This file is managed by Puppet. DO NOT EDIT.
 machine deb.example.net login foologin password secret
 machine apt.example.com login aptlogin password supersecret
 "
 
           it {
             is_expected.to contain_file('/etc/apt/auth.conf').with(ensure: 'present',
                                                                    owner: auth_conf_owner,
                                                                    group: 'root',
                                                                    mode: '0600',
                                                                    notify: 'Class[Apt::Update]',
                                                                    content: auth_conf_content)
           }
         end
 
         context 'with manage_auth_conf => false' do
           let(:params) do
             super().merge(manage_auth_conf: false)
           end
 
           it {
             is_expected.not_to contain_file('/etc/apt/auth.conf')
           }
         end
       end
 
       context 'with improperly specified entries for /etc/apt/auth.conf' do
         let(:params) do
           {
             auth_conf_entries: [
               {
                 machinn: 'deb.example.net',
                 username: 'foologin',
                 password: 'secret',
               },
               {
                 machine: 'apt.example.com',
                 login: 'aptlogin',
                 password: 'supersecret',
               },
             ],
           }
         end
 
         it { is_expected.to raise_error(Puppet::Error) }
       end
     end
   end
 
   context 'with sources defined on valid osfamily' do
     let :facts do
       {
         os: { family: 'Debian', name: 'Ubuntu', release: { major: '16', full: '16.04' } },
         osfamily: 'Debian',
         lsbdistcodename: 'xenial',
         lsbdistid: 'Ubuntu',
         lsbdistrelease: '16.04',
       }
     end
     let(:params) do
       { sources: {
         'debian_unstable' => {
           'location'          => 'http://debian.mirror.iweb.ca/debian/',
           'release'           => 'unstable',
           'repos'             => 'main contrib non-free',
           'key'               => { 'id' => '150C8614919D8446E01E83AF9AA38DCD55BE302B', 'server' => 'subkeys.pgp.net' },
           'pin'               => '-10',
           'include'           => { 'src' => true },
         },
         'puppetlabs' => {
           'location' => 'http://apt.puppetlabs.com',
           'repos'      => 'main',
           'key'        => { 'id' => '6F6B15509CF8E59E6E469F327F438280EF8D349F', 'server' => 'pgp.mit.edu' },
         },
       } }
     end
 
     it {
       is_expected.to contain_apt__setting('list-debian_unstable').with(ensure: 'present')
     }
 
     it { is_expected.to contain_file('/etc/apt/sources.list.d/debian_unstable.list').with_content(%r{^deb http://debian.mirror.iweb.ca/debian/ unstable main contrib non-free$}) }
     it { is_expected.to contain_file('/etc/apt/sources.list.d/debian_unstable.list').with_content(%r{^deb-src http://debian.mirror.iweb.ca/debian/ unstable main contrib non-free$}) }
 
     it {
       is_expected.to contain_apt__setting('list-puppetlabs').with(ensure: 'present')
     }
 
     it { is_expected.to contain_file('/etc/apt/sources.list.d/puppetlabs.list').with_content(%r{^deb http://apt.puppetlabs.com xenial main$}) }
   end
 
   context 'with confs defined on valid osfamily' do
     let :facts do
       {
         os: { family: 'Debian', name: 'Ubuntu', release: { major: '16', full: '16.04' } },
         osfamily: 'Debian',
         lsbdistcodename: 'xenial',
         lsbdistid: 'Ubuntu',
       }
     end
     let(:params) do
       { confs: {
         'foo' => {
           'content' => 'foo',
         },
         'bar' => {
           'content' => 'bar',
         },
       } }
     end
 
     it {
       is_expected.to contain_apt__conf('foo').with(content: 'foo')
     }
 
     it {
       is_expected.to contain_apt__conf('bar').with(content: 'bar')
     }
   end
 
   context 'with keys defined on valid osfamily' do
     let :facts do
       {
         os: { family: 'Debian', name: 'Ubuntu', release: { major: '16', full: '16.04' } },
         osfamily: 'Debian',
         lsbdistcodename: 'xenial',
         lsbdistid: 'Ubuntu',
       }
     end
     let(:params) do
       { keys: {
         '55BE302B' => {
           'server' => 'subkeys.pgp.net',
         },
         'EF8D349F' => {
           'server' => 'pgp.mit.edu',
         },
       } }
     end
 
     it {
       is_expected.to contain_apt__key('55BE302B').with(server: 'subkeys.pgp.net')
     }
 
     it {
       is_expected.to contain_apt__key('EF8D349F').with(server: 'pgp.mit.edu')
     }
   end
 
   context 'with ppas defined on valid osfamily' do
     let :facts do
       {
         os: { family: 'Debian', name: 'Ubuntu', release: { major: '16', full: '16.04' } },
         osfamily: 'Debian',
         lsbdistcodename: 'xenial',
         lsbdistid: 'Ubuntu',
         lsbdistrelease: '16.04',
       }
     end
     let(:params) do
       { ppas: {
         'ppa:drizzle-developers/ppa' => {},
         'ppa:nginx/stable' => {},
       } }
     end
 
     it { is_expected.to contain_apt__ppa('ppa:drizzle-developers/ppa') }
     it { is_expected.to contain_apt__ppa('ppa:nginx/stable') }
   end
 
   context 'with settings defined on valid osfamily' do
     let :facts do
       {
         os: { family: 'Debian', name: 'Ubuntu', release: { major: '16', full: '16.04' } },
         osfamily: 'Debian',
         lsbdistcodename: 'xenial',
         lsbdistid: 'Ubuntu',
       }
     end
     let(:params) do
       { settings: {
         'conf-banana' => { 'content' => 'banana' },
         'pref-banana' => { 'content' => 'banana' },
       } }
     end
 
     it { is_expected.to contain_apt__setting('conf-banana') }
     it { is_expected.to contain_apt__setting('pref-banana') }
   end
 
   context 'with pins defined on valid osfamily' do
     let :facts do
       {
         os: { family: 'Debian', name: 'Ubuntu', release: { major: '16', full: '16.04' } },
         osfamily: 'Debian',
         lsbdistcodename: 'xenial',
         lsbdistid: 'Ubuntu',
       }
     end
     let(:params) do
       { pins: {
         'stable' => { 'priority' => 600, 'order' => 50 },
         'testing' =>  { 'priority' => 700, 'order' => 100 },
       } }
     end
 
     it { is_expected.to contain_apt__pin('stable') }
     it { is_expected.to contain_apt__pin('testing') }
   end
 
   describe 'failing tests' do
     context "with purge['sources.list']=>'banana'" do
       let(:params) { { purge: { 'sources.list' => 'banana' } } }
 
       it do
         is_expected.to raise_error(Puppet::Error)
       end
     end
 
     context "with purge['sources.list.d']=>'banana'" do
       let(:params) { { purge: { 'sources.list.d' => 'banana' } } }
 
       it do
         is_expected.to raise_error(Puppet::Error)
       end
     end
 
     context "with purge['preferences']=>'banana'" do
       let(:params) { { purge: { 'preferences' => 'banana' } } }
 
       it do
         is_expected.to raise_error(Puppet::Error)
       end
     end
 
     context "with purge['preferences.d']=>'banana'" do
       let(:params) { { purge: { 'preferences.d' => 'banana' } } }
 
       it do
         is_expected.to raise_error(Puppet::Error)
       end
     end
 
     context "with purge['apt.conf.d']=>'banana'" do
       let(:params) { { purge: { 'apt.conf.d' => 'banana' } } }
 
       it do
         is_expected.to raise_error(Puppet::Error)
       end
     end
   end
 end
diff --git a/spec/unit/facter/apt_dist_has_updates_spec.rb b/spec/unit/facter/apt_dist_has_updates_spec.rb
index 216050d..7846632 100644
--- a/spec/unit/facter/apt_dist_has_updates_spec.rb
+++ b/spec/unit/facter/apt_dist_has_updates_spec.rb
@@ -1,39 +1,41 @@
 require 'spec_helper'
 
 describe 'apt_has_dist_updates fact' do
   subject { Facter.fact(:apt_has_dist_updates).value }
 
   after(:each) { Facter.clear }
 
   describe 'on non-Debian distro' do
     before(:each) do
+      # Adding temporary workaround for this ticket https://tickets.puppetlabs.com/browse/IAC-1143
+      Facter.clear
       allow(Facter.fact(:osfamily)).to receive(:value).once.and_return('Redhat')
     end
     it { is_expected.to be_nil }
   end
 
   describe 'on Debian based distro missing apt-get' do
     before(:each) do
       allow(Facter.fact(:osfamily)).to receive(:value).once.and_return('Debian')
       allow(File).to receive(:executable?) # Stub all other calls
       allow(File).to receive(:executable?).with('/usr/bin/apt-get').and_return(false)
     end
     it { is_expected.to be_nil }
   end
 
   describe 'on Debian based distro' do
     before(:each) do
       allow(Facter.fact(:osfamily)).to receive(:value).once.and_return('Debian')
       allow(File).to receive(:executable?) # Stub all other calls
       allow(Facter::Util::Resolution).to receive(:exec) # Catch all other calls
       allow(File).to receive(:executable?).with('/usr/bin/apt-get').and_return(true)
       allow(Facter::Util::Resolution).to receive(:exec).with('/usr/bin/apt-get -s -o Debug::NoLocking=true upgrade 2>&1').and_return('test')
       apt_output = "Inst extremetuxracer [2015f-0+deb8u1] (2015g-0+deb8u1 Debian:stable-updates [all])\n" \
                    "Conf extremetuxracer (2015g-0+deb8u1 Debian:stable-updates [all])\n" \
                    "Inst planet.rb [13-1.1] (22-2~bpo8+1 Debian Backports:jessie-backports [all])\n" \
                    "Conf planet.rb (22-2~bpo8+1 Debian Backports:jessie-backports [all])\n"
       allow(Facter::Util::Resolution).to receive(:exec).with('/usr/bin/apt-get -s -o Debug::NoLocking=true dist-upgrade 2>&1').and_return(apt_output)
     end
     it { is_expected.to be true }
   end
 end