Not loading form_for inside of rails console? Also might be reason why my test is failing

gistfile1.rb

➜  sample_app git:(sign-up) ✗ rails c
Loading development environment (Rails 3.2.6)
irb(main):001:0> require "capybara/rails"
=> true
irb(main):002:0> include Capybara::DSL
=> Object
irb(main):003:0> include Rails.application.routes.url_helpers
=> Object
irb(main):005:0> visit signup_path
=> nil
irb(main):006:0> fill_in "Name", with: "Example User"
Capybara::ElementNotFound: cannot fill in, no text field, text area or password field with id, name, or label 'Name' found
<pre><code>In order to use #url_for, you must include routing helpers explicitly. For instance, `include Rails.application.routes.url_helpers</code></pre>


<p>Extracted source (around line <b>#5</b>):
</p>
<pre><code>2: h1 Sign up
3: .row
4:   .span6.offset3
5: 	= form_for(@user) do |f|
6: 		= render 'shared/error_messages'
7: 		= f.label :name

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