Add unit test for barbican::config

The class barbican::config has no unit test,
so add it.

Change-Id: I84d5769906851945b02e8df43f29d8499c5f52c3
Closes-Bug: 1581282

spec/classes/barbican_config_spec.rb

@@ -0,0 +1,48 @@
+require 'spec_helper'
+
+describe 'barbican::config' do
+
+  let(:config_hash) do {
+    'DEFAULT/foo' => { 'value'  => 'fooValue' },
+    'DEFAULT/bar' => { 'value'  => 'barValue' },
+    'DEFAULT/baz' => { 'ensure' => 'absent' }
+  }
+  end
+
+  shared_examples_for 'barbican_config' do
+    let :params do
+      { :api_config => config_hash }
+    end
+
+    it 'configures arbitrary barbican-config configurations' do
+      is_expected.to contain_barbican_config('DEFAULT/foo').with_value('fooValue')
+      is_expected.to contain_barbican_config('DEFAULT/bar').with_value('barValue')
+      is_expected.to contain_barbican_config('DEFAULT/baz').with_ensure('absent')
+    end
+  end
+
+  shared_examples_for 'barbican_api_paste_ini' do
+    let :params do
+      { :api_paste_ini_config => config_hash }
+    end
+
+    it 'configures arbitrary barbican-api-paste-ini configurations' do
+      is_expected.to contain_barbican_api_paste_ini('DEFAULT/foo').with_value('fooValue')
+      is_expected.to contain_barbican_api_paste_ini('DEFAULT/bar').with_value('barValue')
+      is_expected.to contain_barbican_api_paste_ini('DEFAULT/baz').with_ensure('absent')
+    end
+  end
+
+  on_supported_os({
+    :supported_os   => OSDefaults.get_supported_os
+  }).each do |os,facts|
+    context "on #{os}" do
+      let (:facts) do
+        facts.merge!(OSDefaults.get_facts())
+      end
+
+      it_configures 'barbican_config'
+      it_configures 'barbican_api_paste_ini'
+    end
+  end
+end