Added modules

modules/ntp/spec/acceptance/preferred_servers_spec.rb

@@ -0,0 +1,24 @@
+require 'spec_helper_acceptance'
+
+describe 'preferred servers', :unless => UNSUPPORTED_PLATFORMS.include?(fact('osfamily')) do
+  pp = <<-EOS
+      class { '::ntp':
+        servers           => ['a', 'b', 'c', 'd'],
+        preferred_servers => ['c', 'd'],
+      }
+  EOS
+
+  it 'applies cleanly' do
+    apply_manifest(pp, :catch_failures => true) do |r|
+      expect(r.stderr).not_to match(/error/i)
+    end
+  end
+
+  describe file('/etc/ntp.conf') do
+    it { should be_file }
+    it { should contain 'server a' }
+    it { should contain 'server b' }
+    it { should contain 'server c prefer' }
+    it { should contain 'server d prefer' }
+  end
+end