Add FreeBSD support (#288)

* Do not hardcode /etc/postfix

In order to bring support for FreeBSD, do not use the hardcoded
/etc/postfix path for the directory containing Postfix configuration:
FreeBSD ports are installed with a /usr/local/ prefix (by default) so
the configuration files on FreeBSD are stored in the
/usr/local/etc/postfix directory.

* Add support for FreeBSD

* Make it possible to tune the "root" group

FreeBSD does not have a "root" group.  The corresponding group is named
"wheel".

Allow to setup a custom "root_group", and adjust FreeBSD configuration
to set it to "wheel".

* Adjust the test suite so that it pass on FreeBSD

* Do not depend on $postfix::* before including postfix

Some resources parameters depend on the value of variable from the
postfix class.  Ensure these values are substitued only after including
postfix.

* Move default values from hiera to init.pp

These values are system-dependent, but this helps seeing the usual
default value when gen...

data/os/FreeBSD.yaml

+---
+postfix::confdir: "/usr/local/etc/postfix"
+postfix::manage_mailname: false
+postfix::manage_mailx: false
+postfix::root_group: "wheel"
+postfix::params::master_os_template: "postfix/master.cf.FreeBSD.erb"
+postfix::params::restart_cmd: "/usr/local/etc/rc.d/postfix reload"
+...

manifests/canonical.pp

@@ -35,11 +35,14 @@
 #
 define postfix::canonical (
   $destination,
-  $file='/etc/postfix/canonical',
+  $file=undef,
   $ensure='present'
 ) {
+  include postfix
   include ::postfix::augeas
 
+  $_file = pick($file, "${postfix::confdir}/canonical")
+
   case $ensure {
     'present': {
       $changes = [
@@ -58,10 +61,10 @@ define postfix::canonical (
   }
 
   augeas {"Postfix canonical - ${name}":
-    incl    => $file,
+    incl    => $_file,
     lens    => 'Postfix_Canonical.lns',
     changes => $changes,
     require => [Package['postfix'], Augeas::Lens['postfix_canonical']],
-    notify  => Exec["generate ${file}.db"],
+    notify  => Exec["generate ${_file}.db"],
   }
 }

manifests/conffile.pp

@@ -50,12 +50,14 @@ define postfix::conffile (
   Enum['present', 'absent', 'directory'] $ensure    = 'present',
   Variant[Array[String], String, Undef]  $source    = undef,
   Optional[String]                       $content   = undef,
-  Stdlib::Absolutepath                   $path      = "/etc/postfix/${name}",
+  Optional[Stdlib::Absolutepath]         $path      = undef,
   String                                 $mode      = '0640',
   Hash                                   $options   = {},
   Boolean                                $show_diff = true,
 ) {
-  include ::postfix::params
+  include postfix
+
+  $_path = pick($path, "${postfix::confdir}/${name}")
 
   if (!defined(Class['postfix'])) {
     fail 'You must define class postfix before using postfix::config!'
@@ -84,7 +86,7 @@ define postfix::conffile (
 
   file { "postfix conffile ${name}":
     ensure    => $ensure,
-    path      => $path,
+    path      => $_path,
     mode      => $mode,
     owner     => 'root',
     group     => 'postfix',

manifests/config.pp

@@ -31,6 +31,7 @@ define postfix::config (
   Optional[String]                   $value  = undef,
   Enum['present', 'absent', 'blank'] $ensure = 'present',
 ) {
+  include postfix
 
   if ($ensure == 'present') {
     assert_type(Pattern[/^.+$/], $value) |$e, $a| {
@@ -58,10 +59,10 @@ define postfix::config (
   }
 
   augeas { "manage postfix '${title}'":
-    incl    => '/etc/postfix/main.cf',
+    incl    => "${postfix::confdir}/main.cf",
     lens    => 'Postfix_Main.lns',
     changes => $changes,
-    require => File['/etc/postfix/main.cf'],
+    require => File["${postfix::confdir}/main.cf"],
   }
 
   Postfix::Config[$title] ~> Class['postfix::service']

manifests/files.pp

 class postfix::files {
-  include ::postfix::params
+  assert_private()
+
 
   $alias_maps          = $postfix::all_alias_maps
   $amavis_procs        = $postfix::amavis_procs
@@ -18,6 +19,7 @@ class postfix::files {
   $master_bounce_command = $postfix::master_bounce_command
   $master_defer_command  = $postfix::master_defer_command
   $myorigin            = $postfix::myorigin
+  $manage_mailname     = $postfix::manage_mailname
   $manage_aliases      = $postfix::manage_aliases
   $manage_root_alias   = $postfix::manage_root_alias
   $root_mail_recipient = $postfix::root_mail_recipient
@@ -41,11 +43,13 @@ class postfix::files {
     replace => $manage_conffiles,
   }
 
-  file { '/etc/mailname':
-    ensure  => 'file',
-    content => "${::fqdn}\n",
-    mode    => '0644',
-    seltype => $postfix::params::seltype,
+  if $manage_mailname {
+    file { '/etc/mailname':
+      ensure  => 'file',
+      content => "${::fqdn}\n",
+      mode    => '0644',
+      seltype => $postfix::params::seltype,
+    }
   }
 
   # Aliases
@@ -73,10 +77,10 @@ class postfix::files {
     )
   }
 
-  file { '/etc/postfix/master.cf':
+  file { "${postfix::confdir}/master.cf":
     ensure  => 'file',
     content => $_mastercf_content,
-    group   => 'root',
+    group   => $postfix::root_group,
     mode    => '0644',
     owner   => 'root',
     seltype => $postfix::params::seltype,
@@ -84,9 +88,9 @@ class postfix::files {
   }
 
   # Config files
-  file { '/etc/postfix/main.cf':
+  file { "${postfix::confdir}/main.cf":
     ensure  => 'file',
-    group   => 'root',
+    group   => $postfix::root_group,
     mode    => '0644',
     owner   => 'root',
     replace => false,

manifests/init.pp

@@ -93,6 +93,8 @@
 #   }
 #
 class postfix (
+  Stdlib::Absolutepath            $confdir             = '/etc/postfix',
+  String                          $root_group          = 'root',
   String                          $alias_maps          = 'hash:/etc/aliases',
   Optional[Hash]                  $configs             = {},
   Integer                         $amavis_procs        = 2,
@@ -106,6 +108,7 @@ class postfix (
   Boolean                         $mailman             = false,
   String                          $maincf_source       = "puppet:///modules/${module_name}/main.cf",
   Boolean                         $manage_conffiles    = true,
+  Boolean                         $manage_mailname     = true,
   Boolean                         $manage_mailx        = true,
   Optional[String]                $mastercf_source     = undef,
   Optional[String]                $mastercf_content    = undef,
@@ -151,7 +154,7 @@ class postfix (
 
   $all_alias_maps = $ldap ? {
     false => $alias_maps,
-    true  => "${alias_maps}, ldap:/etc/postfix/ldap-aliases.cf",
+    true  => "${alias_maps}, ldap:${confdir}/ldap-aliases.cf",
   }
 
   create_resources('::postfix::config', $configs)

manifests/ldap.pp

@@ -21,7 +21,7 @@ class postfix::ldap {
 
   if $::osfamily == 'Debian' {
     package {'postfix-ldap':
-      before  => File['/etc/postfix/ldap-aliases.cf'],
+      before  => File["${postfix::confdir}/ldap-aliases.cf"],
     }
   }
 
@@ -39,7 +39,7 @@ class postfix::ldap {
     default => $postfix::ldap_options,
   }
 
-  file {'/etc/postfix/ldap-aliases.cf':
+  file {"${postfix::confdir}/ldap-aliases.cf":
     ensure  => 'file',
     owner   => 'root',
     group   => 'postfix',

manifests/mailman.pp

@@ -12,21 +12,22 @@
 #     mailman => true,
 #   }
 class postfix::mailman {
+  include postfix
 
   postfix::config {
     'virtual_alias_maps':
-      value => 'hash:/etc/postfix/virtual';
+      value => "hash:${postfix::confdir}/virtual";
     'transport_maps':
-      value => 'hash:/etc/postfix/transport';
+      value => "hash:${postfix::confdir}/transport";
     'mailman_destination_recipient_limit':
       value => '1';
   }
 
-  postfix::hash { '/etc/postfix/virtual':
+  postfix::hash { "${postfix::confdir}/virtual":
     ensure => 'present',
   }
 
-  postfix::hash { '/etc/postfix/transport':
+  postfix::hash { "${postfix::confdir}/transport":
     ensure => 'present',
   }
 

manifests/map.pp

@@ -32,11 +32,14 @@ define postfix::map (
   Variant[Array[String], String, Undef] $source = undef,
   Optional[Variant[Sensitive[String],String]] $content = undef,
   String                                $type = 'hash',
-  Stdlib::Absolutepath                  $path = "/etc/postfix/${name}",
+  Optional[Stdlib::Absolutepath]        $path = undef,
   String[4,4]                           $mode = '0640'
 ) {
+  include postfix
   include ::postfix::params
 
+  $_path = pick($path, "${postfix::confdir}/${name}")
+
   if (!defined(Class['postfix'])) {
     fail 'You must define class postfix before using postfix::config!'
   }
@@ -58,7 +61,7 @@ define postfix::map (
 
   file { "postfix map ${name}":
     ensure  => $ensure,
-    path    => $path,
+    path    => $_path,
     source  => $source,
     content => $content,
     owner   => 'root',
@@ -71,7 +74,7 @@ define postfix::map (
   if $type !~ /^(cidr|pcre)$/ {
     file {"postfix map ${name}.db":
       ensure  => $ensure,
-      path    => "${path}.db",
+      path    => "${_path}.db",
       owner   => 'root',
       group   => 'postfix',
       mode    => $mode,
@@ -81,8 +84,8 @@ define postfix::map (
   }
 
   $generate_cmd = $ensure ? {
-    'absent'  => "rm ${path}.db",
-    'present' => "postmap ${path}",
+    'absent'  => "rm ${_path}.db",
+    'present' => "postmap ${_path}",
   }
 
   exec {"generate ${name}.db":

manifests/mta.pp

@@ -26,36 +26,41 @@
 #   }
 #
 class postfix::mta (
-  Pattern[/^\S+(?:,\s*\S+)*$/]                 $mydestination = $postfix::mydestination,
-  Pattern[/^(?:\S+?(?:(?:,\s+)|(?:\s+))?)*$/]  $mynetworks    = $postfix::mynetworks,
-  Pattern[/^\S+$/]                             $relayhost     = $postfix::relayhost,
+  Optional[Pattern[/^\S+(?:,\s*\S+)*$/]]                $mydestination = undef,
+  Optional[Pattern[/^(?:\S+?(?:(?:,\s+)|(?:\s+))?)*$/]] $mynetworks    = undef,
+  Optional[Pattern[/^\S+$/]]                            $relayhost     = undef,
 ) {
+  include postfix
+
+  $_mydestination = pick($mydestination, $postfix::mydestination)
+  $_mynetworks = pick($mynetworks, $postfix::mynetworks)
+  $_relayhost = pick($relayhost, $postfix::relayhost)
 
   # If direct is specified then relayhost should be blank
-  if ($relayhost == 'direct') {
+  if ($_relayhost == 'direct') {
     postfix::config { 'relayhost': ensure => 'blank' }
   }
   else {
-    postfix::config { 'relayhost': value => $relayhost }
+    postfix::config { 'relayhost': value => $_relayhost }
   }
 
-  if ($mydestination == 'blank') {
+  if ($_mydestination == 'blank') {
     postfix::config { 'mydestination': ensure => 'blank' }
   } else {
-    postfix::config { 'mydestination': value => $mydestination }
+    postfix::config { 'mydestination': value => $_mydestination }
   }
 
   postfix::config {
-    'mynetworks':          value => $mynetworks;
-    'virtual_alias_maps':  value => 'hash:/etc/postfix/virtual';
-    'transport_maps':      value => 'hash:/etc/postfix/transport';
+    'mynetworks':          value => $_mynetworks;
+    'virtual_alias_maps':  value => "hash:${postfix::confdir}/virtual";
+    'transport_maps':      value => "hash:${postfix::confdir}/transport";
   }
 
-  postfix::hash { '/etc/postfix/virtual':
+  postfix::hash { "${postfix::confdir}/virtual":
     ensure => 'present',
   }
 
-  postfix::hash { '/etc/postfix/transport':
+  postfix::hash { "${postfix::confdir}/transport":
     ensure => 'present',
   }
 

manifests/packages.pp

 class postfix::packages {
-  include ::postfix::params
+  assert_private()
 
   package { 'postfix':
     ensure => $postfix::postfix_ensure,

manifests/satellite.pp

@@ -23,17 +23,22 @@
 #   }
 #
 class postfix::satellite (
-  $mydestination = $postfix::mydestination,
-  $mynetworks    = $postfix::mynetworks,
-  $relayhost     = $postfix::relayhost,
+  $mydestination = undef,
+  $mynetworks    = undef,
+  $relayhost     = undef,
 ) {
+  include postfix
 
   assert_type(Pattern[/^\S+$/], $postfix::myorigin)
 
+  $_mydestination = pick($mydestination, $postfix::mydestination)
+  $_mynetworks = pick($mynetworks, $postfix::mynetworks)
+  $_relayhost = pick($relayhost, $postfix::relayhost)
+
   class { '::postfix::mta':
-    mydestination => $mydestination,
-    mynetworks    => $mynetworks,
-    relayhost     => $relayhost,
+    mydestination => $_mydestination,
+    mynetworks    => $_mynetworks,
+    relayhost     => $_relayhost,
   }
 
   postfix::virtual { "@${postfix::myorigin}":

manifests/service.pp

 class postfix::service {
+  assert_private()
 
   $manage_aliases = $postfix::manage_aliases
 

manifests/transport.pp

@@ -44,11 +44,14 @@
 define postfix::transport (
   Optional[String]          $destination = undef,
   Optional[String]          $nexthop=undef,
-  Stdlib::Absolutepath      $file='/etc/postfix/transport',
+  Optional[Stdlib::Absolutepath] $file=undef,
   Enum['present', 'absent'] $ensure='present'
 ) {
+  include postfix
   include ::postfix::augeas
 
+  $_file = pick($file, "${postfix::confdir}/transport")
+
   $smtp_nexthop = (String($nexthop) =~ /\[.*\]/)
 
   case $ensure {
@@ -104,7 +107,7 @@ define postfix::transport (
 
   augeas {"Postfix transport - ${name}":
     lens    => 'Postfix_Transport.lns',
-    incl    => $file,
+    incl    => $_file,
     changes => $changes,
     require => Augeas::Lens['postfix_transport'],
   }
@@ -113,7 +116,7 @@ define postfix::transport (
     Package['postfix'] -> Postfix::Transport[$title]
   }
 
-  if defined(Postfix::Hash[$file]) {
-    Postfix::Transport[$title] ~> Postfix::Hash[$file]
+  if defined(Postfix::Hash[$_file]) {
+    Postfix::Transport[$title] ~> Postfix::Hash[$_file]
   }
 }

manifests/virtual.pp

@@ -40,11 +40,14 @@
 
 define postfix::virtual (
   Variant[String, Array[String]] $destination,
-  Stdlib::Absolutepath           $file='/etc/postfix/virtual',
+  Optional[Stdlib::Absolutepath] $file=undef,
   Enum['present', 'absent']      $ensure='present'
 ) {
+  include postfix
   include ::postfix::augeas
 
+  $_file = pick($file, "${postfix::confdir}/virtual")
+
   $dest_sets = [$destination].flatten.map |$i, $d| {
     $idx = $i+1
     "set \$entry/destination[${idx}] '${d}'"
@@ -69,7 +72,7 @@ define postfix::virtual (
   }
 
   augeas {"Postfix virtual - ${name}":
-    incl    => $file,
+    incl    => $_file,
     lens    => 'Postfix_Virtual.lns',
     changes => $changes,
     require => Augeas::Lens['postfix_virtual'],
@@ -79,7 +82,7 @@ define postfix::virtual (
     Package['postfix'] -> Postfix::Virtual[$title]
   }
 
-  if defined(Postfix::Hash[$file]) {
-    Postfix::Virtual[$title] ~> Postfix::Hash[$file]
+  if defined(Postfix::Hash[$_file]) {
+    Postfix::Virtual[$title] ~> Postfix::Hash[$_file]
   }
 }

metadata.json

@@ -60,6 +60,13 @@
         "29",
         "30"
       ]
+    },
+    {
+      "operatingsystem": "FreeBSD",
+      "operatingsystemrelease": [
+        "11",
+        "12"
+      ]
     }
   ],
   "requirements": [

spec/classes/postfix_spec.rb

@@ -3,6 +3,31 @@ require 'spec_helper'
 describe 'postfix' do
   on_supported_os.each do |os, facts|
     context "on #{os}" do
+      let(:postfix_main_cf_path) do
+        case facts[:osfamily]
+        when 'FreeBSD' then '/usr/local/etc/postfix/main.cf'
+        else '/etc/postfix/main.cf'
+        end
+      end
+      let(:postfix_master_cf_path) do
+        case facts[:osfamily]
+        when 'FreeBSD' then '/usr/local/etc/postfix/master.cf'
+        else '/etc/postfix/master.cf'
+        end
+      end
+      let(:postfix_transport_path) do
+        case facts[:osfamily]
+        when 'FreeBSD' then '/usr/local/etc/postfix/transport'
+        else '/etc/postfix/transport'
+        end
+      end
+      let(:postfix_virtual_path) do
+        case facts[:osfamily]
+        when 'FreeBSD' then '/usr/local/etc/postfix/virtual'
+        else '/etc/postfix/virtual'
+        end
+      end
+
       let(:facts) do
         facts.merge(augeasversion: '1.2.0',
                     puppetversion: Puppet.version)
@@ -10,7 +35,6 @@ describe 'postfix' do
 
       context 'when using defaults' do
         it { is_expected.to contain_package('postfix') }
-        it { is_expected.to contain_package('mailx') }
         it { is_expected.to contain_exec('newaliases').with_refreshonly('true') }
         it { is_expected.to contain_postfix__config('myorigin').with_value('foo.example.com') }
         it { is_expected.to contain_postfix__config('alias_maps').with_value('hash:/etc/aliases') }
@@ -19,10 +43,11 @@ describe 'postfix' do
         it { is_expected.to contain_mailalias('root').with_recipient('nobody') }
 
         context 'when on Debian family', excl: facts[:osfamily] != 'Debian' do
+          it { is_expected.to contain_package('mailx') }
           it { is_expected.to contain_file('/etc/mailname').without('seltype').with_content("foo.example.com\n") }
           it { is_expected.to contain_file('/etc/aliases').without('seltype').with_content("# file managed by puppet\n") }
-          it { is_expected.to contain_file('/etc/postfix/master.cf').without('seltype') }
-          it { is_expected.to contain_file('/etc/postfix/main.cf').without('seltype') }
+          it { is_expected.to contain_file(postfix_master_cf_path).without('seltype') }
+          it { is_expected.to contain_file(postfix_main_cf_path).without('seltype') }
 
           it {
             is_expected.to contain_service('postfix').with(
@@ -35,9 +60,10 @@ describe 'postfix' do
         end
 
         context 'when on RedHat family', excl: facts[:osfamily] != 'RedHat' do
+          it { is_expected.to contain_package('mailx') }
           it { is_expected.to contain_file('/etc/mailname').with_seltype('postfix_etc_t').with_content("foo.example.com\n") }
-          it { is_expected.to contain_file('/etc/postfix/master.cf').with_seltype('postfix_etc_t') }
-          it { is_expected.to contain_file('/etc/postfix/main.cf').with_seltype('postfix_etc_t') }
+          it { is_expected.to contain_file(postfix_master_cf_path).with_seltype('postfix_etc_t') }
+          it { is_expected.to contain_file(postfix_main_cf_path).with_seltype('postfix_etc_t') }
 
           it { is_expected.to contain_postfix__config('sendmail_path') }
           it { is_expected.to contain_postfix__config('newaliases_path') }
@@ -91,7 +117,9 @@ describe 'postfix' do
             end
 
             context('when on other', excl: (facts[:osfamily] != 'RedHat' || facts[:operatingsystem] == 'Fedora' || ['6', '7', '8'].include?(facts[:operatingsystemmajrelease]))) do
-              it { is_expected.to contain_file('/etc/aliases').with_seltype('postfix_etc_t').with_content("# file managed by puppet\n") }
+              context('on Linux', excl: facts[:osfamily] != 'Linux') do
+                it { is_expected.to contain_file('/etc/aliases').with_seltype('postfix_etc_t').with_content("# file managed by puppet\n") }
+              end
               it {
                 is_expected.to contain_service('postfix').with(
                   ensure: 'running',
@@ -134,7 +162,7 @@ describe 'postfix' do
             it { is_expected.to contain_file('/etc/aliases').without('seltype').with_content("# file managed by puppet\n") }
             it { is_expected.to contain_exec('newaliases').with_refreshonly('true') }
             it {
-              is_expected.to contain_file('/etc/postfix/master.cf').without('seltype').with_content(
+              is_expected.to contain_file(postfix_master_cf_path).without('seltype').with_content(
                 %r{smtp      inet  n       -       -       -       -       smtpd},
               ).with_content(
                 %r{amavis unix},
@@ -154,7 +182,7 @@ describe 'postfix' do
                 %r{^submission inet n},
               )
             }
-            it { is_expected.to contain_file('/etc/postfix/main.cf').without('seltype') }
+            it { is_expected.to contain_file(postfix_main_cf_path).without('seltype') }
 
             it { is_expected.to contain_postfix__config('myorigin').with_value('localhost') }
             it { is_expected.to contain_postfix__config('alias_maps').with_value('hash:/etc/aliases') }
@@ -196,7 +224,7 @@ describe 'postfix' do
             end
 
             it 'adjusts the content of /etc/postfix/master.cf specifying the user' do
-              is_expected.to contain_file('/etc/postfix/master.cf').with_seltype('postfix_etc_t').with_content(%r{user=bar})
+              is_expected.to contain_file(postfix_master_cf_path).with_content(%r{user=bar})
             end
           end
           context 'when mailman is true' do
@@ -301,7 +329,7 @@ describe 'postfix' do
             end
 
             it 'updates master.cf with the specified flags to smtp' do
-              is_expected.to contain_file('/etc/postfix/master.cf').with_seltype('postfix_etc_t').with_content(
+              is_expected.to contain_file(postfix_master_cf_path).with_content(
                 %r{smtp      inet  n       -       -       -       -       smtpd},
               ).with_content(
                 %r{^smtp.*\n.*smtpd_client_restrictions=check_client_access,hash:},
@@ -316,7 +344,7 @@ describe 'postfix' do
             end
 
             it 'updates master.cf with the specified flags to smtps' do
-              is_expected.to contain_file('/etc/postfix/master.cf').with_content(%r{^smtps     inet  n})
+              is_expected.to contain_file(postfix_master_cf_path).with_content(%r{^smtps     inet  n})
             end
           end
           context 'when mta is enabled' do
@@ -326,8 +354,8 @@ describe 'postfix' do
               is_expected.to contain_postfix__config('mydestination').with_value('1.2.3.4')
               is_expected.to contain_postfix__config('mynetworks').with_value('127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128')
               is_expected.to contain_postfix__config('relayhost').with_value('2.3.4.5')
-              is_expected.to contain_postfix__config('virtual_alias_maps').with_value('hash:/etc/postfix/virtual')
-              is_expected.to contain_postfix__config('transport_maps').with_value('hash:/etc/postfix/transport')
+              is_expected.to contain_postfix__config('virtual_alias_maps').with_value("hash:#{postfix_virtual_path}")
+              is_expected.to contain_postfix__config('transport_maps').with_value("hash:#{postfix_transport_path}")
             end
             it { is_expected.to contain_class('postfix::mta') }
             context 'and satellite is also enabled' do
@@ -377,8 +405,8 @@ describe 'postfix' do
               is_expected.to contain_postfix__config('mydestination').with_value('1.2.3.4')
               is_expected.to contain_postfix__config('mynetworks').with_value('127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128')
               is_expected.to contain_postfix__config('relayhost').with_value('2.3.4.5')
-              is_expected.to contain_postfix__config('virtual_alias_maps').with_value('hash:/etc/postfix/virtual')
-              is_expected.to contain_postfix__config('transport_maps').with_value('hash:/etc/postfix/transport')
+              is_expected.to contain_postfix__config('virtual_alias_maps').with_value("hash:#{postfix_virtual_path}")
+              is_expected.to contain_postfix__config('transport_maps').with_value("hash:#{postfix_transport_path}")
             end
             context 'and mta is also enabled' do
               let(:params) { { mta: true, satellite: true, mydestination: '1.2.3.4', relayhost: '2.3.4.5' } }
@@ -399,28 +427,28 @@ describe 'postfix' do
             let(:params) { { use_amavisd: true } }
 
             it 'updates master.cf with the specified flags to amavis' do
-              is_expected.to contain_file('/etc/postfix/master.cf').with_content(%r{amavis unix})
+              is_expected.to contain_file(postfix_master_cf_path).with_content(%r{amavis unix})
             end
           end
           context 'when use_dovecot_lda is true' do
             let(:params) { { use_dovecot_lda: true } }
 
             it 'updates master.cf with the specified flags to dovecot' do
-              is_expected.to contain_file('/etc/postfix/master.cf').with_content(%r{dovecot.*\n.* user=vmail:vmail })
+              is_expected.to contain_file(postfix_master_cf_path).with_content(%r{dovecot.*\n.* user=vmail:vmail })
             end
           end
           context 'when use_schleuder is true' do
             let(:params) { { use_schleuder: true } }
 
             it 'updates master.cf with the specified flags to schleuder' do
-              is_expected.to contain_file('/etc/postfix/master.cf').with_content(%r{schleuder})