expecting <"show"> but rendering with <"servers/_form, servers/new, layouts/application">

rspec_error.rb

# In the file spec/controllers/servers_controller_spec.rb
...
...

describe "POST create" do
  describe "failure" do
      it "should re-render server page" do
        post :create, :server => @server
        response.should render_template(:show)
      end
  end
end

...
#

In console...

1) ServersController POST create failure should re-render server page
     Failure/Error: response.should render_template(:show)
       expecting <"show"> but rendering with <"servers/_form, servers/new, layouts/application">.
       Expected block to return true value.
     # ./spec/controllers/servers_controller_spec.rb:72:in `block (4 levels) in <top (required)>'