追記ですが、httpd.confの中身です。
<VirtualHost *:80>
DocumentRoot "/var/www/localhost/htdocs"
RailsEnv development
RailsBaseURI /test

<Directory "/var/www/localhost/htdocs">
Options Indexes FollowSymLinks
AllowOverride None
Order allow,deny
Allow from all
</Directory>

<Directory "/var/www/localhost/htdocs/rails">
Options +FollowSymLinks
AllowOverride All
</Directory>
</VirtualHost>