Support checking MySQL configuration

lib/serverspec/helper/type.rb

@@ -2,13 +2,14 @@ module Serverspec
   module Helper
     module Type
       types = %w(
-        base bridge bond cgroup command cron default_gateway file fstab group host
-        iis_website iis_app_pool interface ipfilter ipnat iptables
-        ip6tables kernel_module linux_kernel_parameter lxc mail_alias
-        package php_config port ppa process routing_table selinux
-        selinux_module service user yumrepo windows_feature
-        windows_hot_fix windows_registry_key windows_scheduled_task zfs
-        docker_base docker_image docker_container x509_certificate x509_private_key
+        base bridge bond cgroup command cron default_gateway file fstab
+        group host iis_website iis_app_pool interface ipfilter ipnat
+        iptables ip6tables kernel_module linux_kernel_parameter lxc
+        mail_alias mysql_config package php_config port ppa process
+        routing_table selinux selinux_module service user yumrepo
+        windows_feature windows_hot_fix windows_registry_key
+        windows_scheduled_task zfs docker_base docker_image
+        docker_container x509_certificate x509_private_key
       )
 
       types.each {|type| require "serverspec/type/#{type}" }

lib/serverspec/type/mysql_config.rb

@@ -0,0 +1,10 @@
+module Serverspec::Type
+  class MysqlConfig < Base
+    def value
+      ret = @runner.run_command("mysqld --verbose --help 2> /dev/null | grep '^#{@name}'")
+      val = ret.stdout.match(/#{@name}\s+(.+)$/)[1]
+      val = val.to_i if val.match(/^\d+$/)
+      val
+    end
+  end
+end

spec/type/base/mysql_config_spec.rb

@@ -0,0 +1,13 @@
+require 'spec_helper'
+
+set :os, :family => 'base'
+
+describe mysql_config('innodb-buffer-pool-size') do
+  let(:stdout) { 'innodb-buffer-pool-size           134217728' }
+  its(:value) { should eq 134217728 }
+end
+
+describe mysql_config('socket') do
+  let(:stdout) { 'socket                            /tmp/mysql.sock' }
+  its(:value) { should eq '/tmp/mysql.sock' }
+end