diff --git a/manifests/horizon.pp b/manifests/horizon.pp
index fffb063..11b1a8a 100644
--- a/manifests/horizon.pp
+++ b/manifests/horizon.pp
@@ -10,7 +10,49 @@
 #
 # === Parameters
 #
-# See params.pp
+# [*secret_key*]
+#   (required) A secret key for a particular Django installation. This is used to provide cryptographic signing,
+#   and should be set to a unique, unpredictable value.
+#
+# [*cache_server_ip*]
+#   (optional) Ip address where the memcache server is listening.
+#   Defaults to '127.0.0.1'.
+#
+# [*cache_server_port*]
+#    (optional) Port that memcache server listens on.
+#    Defaults to '11211'.
+#
+# [*swift*]
+#   (optional) Whether the swift interface extension should be enabled in Horizon
+#    Defaults to false.
+#
+# [*quantum*]
+#   (optional) Whether the quantum interface extension should be enabled in Horizon
+#    Defaults to false.
+#
+# [*horizon_app_links*]
+#   (optional) External Monitoring links.
+#   Defaults to undef.
+#
+# [*keystone_host*]
+#   (optional) Address of keystone host.
+#   Defaults to '127.0.0.1'.
+#
+# [*keystone_scheme*]
+#    (optional) Protocol for keystone. Accepts http or https.
+#    Defaults to http.
+#
+# [*keystone_default_role*]
+#   (Optional) Default role for keystone authentication.
+#   Defaults to 'Member'.
+#
+# [*django_debug*]
+#    (Optional) Sets Django debug level.
+#    Defaults to false.
+#
+# [*api_result_limit*]
+#    (Optional) Maximum results to show on a page before pagination kicks in.
+#    Defaults to 1000.
 #
 # === Examples
 #
diff --git a/spec/classes/openstack_horizon_spec.rb b/spec/classes/openstack_horizon_spec.rb
new file mode 100644
index 0000000..9859398
--- /dev/null
+++ b/spec/classes/openstack_horizon_spec.rb
@@ -0,0 +1,44 @@
+require 'spec_helper'
+
+describe 'openstack::horizon' do
+
+  let :required_params do
+    { :secret_key => 'super_secret' }
+  end
+
+  let :params do
+    required_params
+  end
+
+  let :facts do
+    {
+      :osfamily       => 'Redhat',
+      :memorysize     => '1GB',
+      :processorcount => '1',
+      :concat_basedir => '/tmp',
+      :operatingsystemrelease => '5'
+    }
+  end
+
+  it 'should configure horizon and memcache using default parameters and secret key' do
+    should contain_class('memcached').with(
+      :listen_ip => '127.0.0.1',
+      :tcp_port  => '11211',
+      :udp_port  => '11211'
+    )
+    should contain_class('horizon').with(
+      :cache_server_ip       => '127.0.0.1',
+      :cache_server_port     => '11211',
+      :secret_key            => 'super_secret',
+      :swift                 => false,
+      :quantum               => false,
+      :horizon_app_links     => false,
+      :keystone_host         => '127.0.0.1',
+      :keystone_scheme       => 'http',
+      :keystone_default_role => 'Member',
+      :django_debug          => 'False',
+      :api_result_limit      => 1000
+    )
+  end
+
+end