setting arch variable

manifests/init.pp

@@ -4,8 +4,10 @@
 #
 # @example
 #   include easybuild
-class easybuild {
-  $arch = ''
+class easybuild (
+  $arch = easybuild::params::arch,
+) {
+
   file { '/etc/easybuild.d':
     ensure => 'directory',
   }

manifests/params.pp

+# A description of what this class does
+#
+# @summary A short summary of the purpose of this class
+#
+# @example
+#   include easybuild::params
+class easybuild::params {
+  $arch = 'nehalem'
+}

spec/classes/params_spec.rb

+require 'spec_helper'
+
+describe 'easybuild::params' do
+  on_supported_os.each do |os, os_facts|
+    context "on #{os}" do
+      let(:facts) { os_facts }
+
+      it { is_expected.to compile }
+    end
+  end
+end