add tests for cpu plugin

spec/classes/collectd_plugin_cpu_spec.rb

@@ -0,0 +1,86 @@
+require 'spec_helper'
+
+describe 'collectd::plugin::cpu', :type => :class do
+
+  let :facts do
+    {:osfamily => 'RedHat'}
+  end
+
+  context ':ensure => present' do
+    context ':ensure => present and collectd version < 5.5' do
+
+      it 'Will create /etc/collectd.d/10-cpu.conf to load the plugin' do
+        should contain_file('cpu.load').with({
+          :ensure  => 'present',
+          :path    => '/etc/collectd.d/10-cpu.conf',
+          :content => /LoadPlugin cpu/,
+        })
+      end
+
+      it 'Will not include ReportByState in /etc/collectd.d/10-cpu.conf' do
+        should_not contain_file('cpu.load').with_content(/ReportByState/)
+      end
+
+      it 'Will not include ReportByCpu in /etc/collectd.d/10-cpu.conf' do
+        should_not contain_file('cpu.load').with_content(/ReportByCpu/)
+      end
+
+      it 'Will not include ValuesPercentage in /etc/collectd.d/10-cpu.conf' do
+        should_not contain_file('cpu.load').with_content(/ValuesPercentage/)
+      end
+    end
+
+    context 'cpu options should be set with collectd 5.5' do
+      let :facts do
+        {:osfamily            => 'RedHat',
+         :collectd_version    => '5.5',
+        }
+      end
+      let :params do
+        {:reportbystate       => false,
+         :reportbycpu         => false,
+         :valuespercentage    => true,
+        }
+      end
+
+      it 'Will include ReportByState in /etc/collectd.d/10-cpu.conf' do
+        should contain_file('cpu.load').with_content(/ReportByState = false/)
+      end
+
+      it 'Will include ReportByCpu in /etc/collectd.d/10-cpu.conf' do
+        should contain_file('cpu.load').with_content(/ReportByCpu = false/)
+      end
+
+      it 'Will include ValuesPercentage in /etc/collectd.d/10-cpu.conf' do
+        should contain_file('cpu.load').with_content(/ValuesPercentage = true/)
+      end
+    end
+  end
+
+  context 'default parameters are not booleans' do
+    let :params do
+      {:reportbystate    => 'string_a',
+       :reportbycpu      => 'string_b',
+       :valuespercentage => 'string_c',
+      }
+    end
+
+    it 'Will raise an error about parameters not being boolean' do
+      should compile.and_raise_error(/bool/)
+    end
+
+  end
+
+  context ':ensure => absent' do
+    let :params do
+      {:ensure => 'absent'}
+    end
+    it 'Will remove /etc/collectd.d/10-cpu.conf' do
+      should contain_file('cpu.load').with({
+        :ensure  => 'absent',
+        :path    => '/etc/collectd.d/10-cpu.conf',
+        :content => /LoadPlugin cpu/,
+      })
+    end
+  end
+end