所以，我发现没有工作：

 描述'登录'do 
之前{visit root_path} 
 subject {page} 

描述'应该能够登录'do 
 before 
 user = FactoryGirl.create（：user）
 fill_in：user_email，with：user.email 
 fill_in：user_password， with：user.password 
 click_on'登录'
 end 
 it {should have_link'注销'} 
 end 
 

正确代码实际上是：

 描述'登录'do 
 before {visit root_path} 
 subject { 

描述'应该能够登录'do 
之前
 user = FactoryGirl.create（：user）
 fill_in'user_email'，其中： user.email 
 fill_in'user_password'，其中：user.password 
 click_on'登录'
 end 
 it {should have_link'注销'} 
 end 
 end 
 end 
 

似乎Capybara fill_in方法不采取符号ids只是字符串的参数。
傻我。

I'm having troubles making an integration test, for the user login in my rails application, pass.

I'm using Rspec and capybara, as well as devise for user authentication

Here is my code :

requests/authentications_spec.rb

describe 'log in' do
  before { visit root_path }
  subject { page }

  describe 'should be able to log in' do
    before do
      user = FactoryGirl.create(:user)
      fill_in :user_email, with: user.email
      fill_in :user_password, with: user.password
      click_on 'Log in'
    end
    it { should have_link 'Log out' }
  end
end

factories/user_factory.rb

FactoryGirl.define do
  factory :user do
    sequence( :first_name )  { |n| "FirstName#{n}" }
    sequence( :last_name )  { |n| "LastName#{n}" }
    sequence( :email ) { |n| "foo#{n}@example.com" }
    password              'foobar'
    password_confirmation 'foobar'
    created_at            Time.now
    updated_at            Time.now
  end
end

_login_form.html.erb, This form is rendered in the application layout header.

<%= form_for(resource, as: resource_name, url: session_path(resource_name), html: { id: 'login-mini-form' }) do |f| %>
  <%= f.email_field :email,       placeholder: 'Your email' %>
  <%= f.password_field :password, placeholder: '******' %>
  <%= f.submit "Log in", id: 'login-button' %>

  <%- if devise_mapping.rememberable? -%>
    <%= f.check_box :remember_me %> <%= f.label :remember_me %>
  <%- end -%>

<% end %>

In the layout I have something like that :

if user_signed_in?
  render 'devise/menu/logout_button'
else
  render 'devise/menu/login_form'
end

The test is giving me

1) User should be able to log in with valid credentials 
     Failure/Error: it { should have_link 'Log out' }
       expected link "Log out" to return something
     # ./spec/requests/authentications_spec.rb:117:in `block (6 levels) in <top (required)>'

Finished in 0.71406 seconds
8 examples, 2 failures, 2 pending

I don't get why my test is not passing. Any ideas ?

Thanks a lot !

Edit : I get the same behavior testing the registration with : expect { click_button register_button }.to change(User, :count).by 1, the test returns :

Failure/Error: expect { click_button register_button }.to change(User, :count).by 1
       count should have been changed by 1, but was changed by 0

So, I have found what was not working :

describe 'log in' do
  before { visit root_path }
  subject { page }

  describe 'should be able to log in' do
    before do
      user = FactoryGirl.create(:user)
      fill_in :user_email, with: user.email
      fill_in :user_password, with: user.password
      click_on 'Log in'
    end
    it { should have_link 'Log out' }
  end

The correct code is in fact :

describe 'log in' do
  before { visit root_path }
    subject { page }

    describe 'should be able to log in' do
      before do
        user = FactoryGirl.create(:user)
        fill_in 'user_email', with: user.email
        fill_in 'user_password', with: user.password
        click_on 'Log in'
      end
      it { should have_link 'Log out' }
    end
  end
end

It seems Capybara fill_in method doesn't take a symbol as an argument for ids but only strings. Silly me.