Rspec ожидал, что link_to ничего не находит

![введите описание изображения][1]Я читал учебник по RoR Майкла Хартла, и я застрял с 7 ошибками в Rspec. Я искал 3 часа, чтобы найти ошибку, но я просто не могу ее найти. ошибки говорят, что у меня нет link_to для выхода (одна со страниц пользователей и одна со страницы редактирования), link_to change и куча ошибок have_selector. Вот rspec user_pages_spec.rb. Я почти уверен, что edit.html.erb и header.html в порядке, но если никто не видит ничего плохого в этом rspec, я опубликую его.

 describe "edit" do
    let(:user) { FactoryGirl.create(:user) }
    before do
        sign_in user
        visit edit_user_path(user)
    end

    describe "page" do
        it { should have_selector('h1',    text: "Update your profile") }
        it { should have_selector('title', text: "Edit user") }
        it { should have_link('change', href: 'http://gravatar.com/emails') }
    end

    describe "with valid information" do
        let(:new_name) { "New Name" }
        let(:new_email) { "[email protected]" }
        before do
            fill_in "Name",             with: new_name
            fill_in "Email",            with: new_email
            fill_in "Password",         with: user.password
            fill_in "Confirm Password", with: user.password
            click_button "Save changes"
        end

        it { should have_selector('title', text: new_name) }
        it { should have_selector('div.alert.alert-success') }
        it { should have_link('Sign out', href: signout_path) }
        specify { user.reload.name.should == new_name }
        specify { user.reload.email.should == new_email }
    end

конец

вот ошибки и остальные файлы, которые с ними связаны

Failures:

  1) User pages signup with valid information after saving the user
     ←[31mFailure/Error:←[0m ←[31mit { should have_link('Sign out') }←[0m
       ←[31mexpected link "Sign out" to return something←[0m
←[36m     # ./spec/requests/user_pages_spec.rb:30:in `block (5 levels) in <top (
required)>'←[0m

  2) User pages edit page
     ←[31mFailure/Error:←[0m ←[31mit { should have_link('change', href: 'http://
gravatar.com/emails') }←[0m
       ←[31mexpected link "change" to return something←[0m
←[36m     # ./spec/requests/user_pages_spec.rb:134:in `block (4 levels) in <top
(required)>'←[0m

  3) User pages edit page
     ←[31mFailure/Error:←[0m ←[31mit { should have_selector('title', text: "Edit
 user") }←[0m
       ←[31mexpected css "title" with text "Edit user" to return something←[0m
←[36m     # ./spec/requests/user_pages_spec.rb:133:in `block (4 levels) in <top
(required)>'←[0m

  4) User pages edit page
     ←[31mFailure/Error:←[0m ←[31mit { should have_selector('h1',    text: "Upda
te your profile") }←[0m
       ←[31mexpected css "h1" with text "Update your profile" to return somethin
g←[0m
←[36m     # ./spec/requests/user_pages_spec.rb:132:in `block (4 levels) in <top
(required)>'←[0m

  5) User pages edit with valid information
     ←[31mFailure/Error:←[0m ←[31mit { should have_selector('div.alert.alert-suc
cess') }←[0m
       ←[31mexpected css "div.alert.alert-success" to return something←[0m
←[36m     # ./spec/requests/user_pages_spec.rb:149:in `block (4 levels) in <top
(required)>'←[0m

  6) User pages edit with valid information
     ←[31mFailure/Error:←[0m ←[31mit { should have_selector('title', text: new_n
ame) }←[0m
       ←[31mexpected css "title" with text "New Name" to return something←[0m
←[36m     # ./spec/requests/user_pages_spec.rb:148:in `block (4 levels) in <top
(required)>'←[0m

  7) User pages edit with valid information
     ←[31mFailure/Error:←[0m ←[31mit { should have_link('Sign out', href: signou
t_path) }←[0m
       ←[31mexpected link "Sign out" to return something←[0m
←[36m     # ./spec/requests/user_pages_spec.rb:150:in `block (4 levels) in <top
(required)>'←[0m



<% provide(:title, "Edit user") %>
<h1>Update your profile</h1>
<div class="row">
    <div class="span6 offset3">
        <%= form_for(@user) do |f| %>
            <% render 'shared/error_messages' %>

            <%= f.label :name %>
            <%= f.text_field :name %>

            <%= f.label :email %>
            <%= f.text_field :email %>

            <%= f.label :password %>
            <%= f.password_field :password %>

            <%= f.label :password_confirmation, "Confirm Password" %>
            <%= f.password_field :password_confirmation %>
        <%= f.submit "Save changes", class: "btn btn-large btn-primary" %>
        <% end %>

        <%= gravatar_for @user %>
       <a href="http://gravatar.com/emails">change</a>
    </div>
</div>


<header class="navbar navbar-fixed-top">
    <div class="navbar-inner">
        <div class="container">
            <%= link_to "Anime Ranting", root_path, id: "logo" %>
            <nav>
                <ul class="nav pull-right">
                    <li><%= link_to "Home", root_path %></li>
                    <li><%= link_to "Help", help_path %></li>
                    <% if signed_in? %>
                        <li><%= link_to "Users", '#' %></li>
                        <li id="fat-menu" class="dropdown">
                            <a href-"#" class="dropdown-toggle" data-toggle="dropdown">
                                Account <b class="caret"></b>
                            </a>
                            <ul class="dropdown-menu">
                                <li><%= link_to "Profile", current_user %></li>
                                <li><%= link_to "Settings", edit_user_path(current_user) %></li>
                                <li class="divier"></li>
                                <li><%= link_to "Sign out", signout_path, method: "delete" %></li>
                            </ul>
                        </li>
                    <% else %>
                        <li><%= link_to "Sign in", signin_path %></li>
                    <% end %>
                </ul>
            </nav>
        </div>
    </div>
</header>