0
我收到一個非常奇怪的錯誤，因爲它在瀏覽器中完美工作，即顯示帖子並顯示作者姓名。沒有錯誤。未定義的方法爲零：RSpec中的NilClass，即使手動測試通過
但是，功能測試正在打破，我不知道爲什麼。這很奇怪。
posts_features_spec.rb:
require 'spec_helper'
require_relative '../support/spec_helper_methods'
feature "Post Features" do
include SpecHelperMethods
let(:user){ User.create(name: "Andy", email: "[email protected]", password: "password", password_confirmation: "password") }
describe "Creating Posts" do
it "Can create a post" do
visit '/'
click_on "Sign Up"
fill_in 'user[name]', with: "Bob"
fill_in 'user[email]', with: "[email protected]"
fill_in 'user[password]', with: "password"
fill_in 'user[password_confirmation]', with: "password"
click_on 'Sign Up'
click_on 'Login'
fill_in 'email', with: "[email protected]"
fill_in 'password', with: "password"
click_on 'Login'
expect(page).to have_content "Successfully signed in!"
click_on "Create Post"
fill_in 'post[title]', with: "Title99"
fill_in 'post[body]', with: "Body99"
click_on "Post"
expect(current_path).to eq '/posts'
expect(page).to have_content "Title99"
expect(page).to have_content "Body99"
expect(page).to have_content "Bob"
expect(page).to have_content "Post Posted!"
end
end
describe 'Post Show page' do
let(:post){ Post.create title: 'Lazy-loaded Post', body: 'Body', user: user }
before(:each){ visit "/posts/show/#{post.id}" }
it "Post's title, body, and author are displayed" do
expect(page).to have_content "#{post.title}"
expect(page).to have_content "#{post.body}"
expect(page).to have_content "#{post.user.name}"
end
end
end
控制器：
PadrinoBlog::App.controllers :posts do
get :new do
@post = Post.new
render 'posts/new'
end
post :create do
post = Post.new(params[:post])
post.user = current_user
if post.save
puts Post.all.count
puts Post.last.inspect
redirect('/posts', notice: "Post Posted!")
end
end
get :index do
@posts = Post.order('created_at DESC').all
render 'posts/index'
end
get :show, with: :id do
@post = Post.find_by_id(params[:id])
render 'posts/show'
end
end
index.html.erb：
<%= link_to "Sign Up", 'users/new' %>
<% unless signed_in? %>
<%= link_to "Login", 'sessions/new' %>
<% end %>
<% if signed_in? %>
<%= link_to "Logout", 'sessions/destroy' %>
<% end %>
<% if flash[:notice] %>
<p><%= flash[:notice] %></p>
<% end %>
<% if signed_in? %>
<%= link_to "Create Post", 'posts/new' %>
<% end %>
<% if @posts %>
<%= partial 'posts/post', collection: @posts %>
<% end %>
_posts.html.erb：
<div class='post'>
<h4><%= post.title %></h4>
<p><%= post.body %></p>
<p><%= post.user.name %></p>
</div>
在運行測試中，「展頁'測試通過，但第一個（長的）打破了wh恩它點擊「創建郵報」，有這樣的：
Failure/Error: <p><%= post.user.name %></p>
NoMethodError:
undefined method `name' for nil:NilClass
# ./app/views/posts/_post.html.erb:4:in `block in singleton class'
# ./app/views/posts/_post.html.erb:-7:in `instance_eval'
# ./app/views/posts/_post.html.erb:-7:in `singleton class'
# ./app/views/posts/_post.html.erb:-9:in `__tilt_5665000'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/tilt-1.4.1/lib/tilt/template.rb:170:in `call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/tilt-1.4.1/lib/tilt/template.rb:170:in `evaluate'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/tilt-1.4.1/lib/tilt/template.rb:103:in `render'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-helpers-0.13.1/lib/padrino/rendering/erb_template.rb:18:in `render'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/sinatra-1.4.6/lib/sinatra/base.rb:822:in `render'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-helpers-0.13.1/lib/padrino/rendering.rb:212:in `render'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-helpers-0.13.1/lib/padrino-helpers/render_helpers.rb:55:in `block in partial'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/activerecord-4.2.5/lib/active_record/relation/delegation.rb:132:in `each'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/activerecord-4.2.5/lib/active_record/relation/delegation.rb:132:in `each_with_object'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/activerecord-4.2.5/lib/active_record/relation/delegation.rb:132:in `public_send'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/activerecord-4.2.5/lib/active_record/relation/delegation.rb:132:in `method_missing'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/activerecord-4.2.5/lib/active_record/relation/delegation.rb:99:in `method_missing'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-helpers-0.13.1/lib/padrino-helpers/render_helpers.rb:48:in `partial'
# ./app/views/posts/index.html.erb:20:in `block in singleton class'
# ./app/views/posts/index.html.erb:-6:in `instance_eval'
# ./app/views/posts/index.html.erb:-6:in `singleton class'
# ./app/views/posts/index.html.erb:-8:in `__tilt_5665000'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/tilt-1.4.1/lib/tilt/template.rb:170:in `call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/tilt-1.4.1/lib/tilt/template.rb:170:in `evaluate'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/tilt-1.4.1/lib/tilt/template.rb:103:in `render'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-helpers-0.13.1/lib/padrino/rendering/erb_template.rb:18:in `render'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/sinatra-1.4.6/lib/sinatra/base.rb:822:in `render'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-helpers-0.13.1/lib/padrino/rendering.rb:212:in `render'
# ./app/controllers/posts.rb:20:in `block (2 levels) in <top (required)>'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-core-0.13.1/lib/padrino-core/application/routing.rb:517:in `call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-core-0.13.1/lib/padrino-core/application/routing.rb:517:in `block in route'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-core-0.13.1/lib/padrino-core/application/routing.rb:992:in `block in invoke_route'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-core-0.13.1/lib/padrino-core/application/routing.rb:987:in `catch'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-core-0.13.1/lib/padrino-core/application/routing.rb:987:in `invoke_route'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-core-0.13.1/lib/padrino-core/application/routing.rb:952:in `block in route!'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-core-0.13.1/lib/padrino-core/path_router/compiler.rb:53:in `block in call_by_request'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-core-0.13.1/lib/padrino-core/path_router/compiler.rb:84:in `block in rotation'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-core-0.13.1/lib/padrino-core/path_router/compiler.rb:83:in `loop'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-core-0.13.1/lib/padrino-core/path_router/compiler.rb:83:in `with_object'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-core-0.13.1/lib/padrino-core/path_router/compiler.rb:83:in `rotation'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-core-0.13.1/lib/padrino-core/path_router/compiler.rb:49:in `call_by_request'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-core-0.13.1/lib/padrino-core/path_router.rb:43:in `call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-core-0.13.1/lib/padrino-core/application/routing.rb:949:in `route!'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-core-0.13.1/lib/padrino-core/application/routing.rb:932:in `block in dispatch!'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/sinatra-1.4.6/lib/sinatra/base.rb:1066:in `block in invoke'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/sinatra-1.4.6/lib/sinatra/base.rb:1066:in `catch'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/sinatra-1.4.6/lib/sinatra/base.rb:1066:in `invoke'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-core-0.13.1/lib/padrino-core/application/routing.rb:930:in `dispatch!'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/sinatra-1.4.6/lib/sinatra/base.rb:906:in `block in call!'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/sinatra-1.4.6/lib/sinatra/base.rb:1066:in `block in invoke'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/sinatra-1.4.6/lib/sinatra/base.rb:1066:in `catch'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/sinatra-1.4.6/lib/sinatra/base.rb:1066:in `invoke'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/sinatra-1.4.6/lib/sinatra/base.rb:906:in `call!'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/rspec-padrino-0.2.2/lib/rspec/padrino/initializers/last_application.rb:12:in `block (2 levels) in <top (required)>'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/sinatra-1.4.6/lib/sinatra/base.rb:894:in `call'
# ./lib/connection_pool_management_middleware.rb:7:in `block in call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/activerecord-4.2.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:292:in `with_connection'
# ./lib/connection_pool_management_middleware.rb:7:in `call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/sass-3.4.21/lib/sass/plugin/rack.rb:54:in `call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/rack-protection-1.5.3/lib/rack/protection/base.rb:49:in `call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/rack-protection-1.5.3/lib/rack/protection/xss_header.rb:18:in `call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/rack-protection-1.5.3/lib/rack/protection/base.rb:49:in `call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/rack-protection-1.5.3/lib/rack/protection/base.rb:49:in `call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/rack-protection-1.5.3/lib/rack/protection/json_csrf.rb:18:in `call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/rack-protection-1.5.3/lib/rack/protection/base.rb:49:in `call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/rack-protection-1.5.3/lib/rack/protection/base.rb:49:in `call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/rack-protection-1.5.3/lib/rack/protection/frame_options.rb:31:in `call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/rack-1.6.4/lib/rack/head.rb:13:in `call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/rack-1.6.4/lib/rack/methodoverride.rb:22:in `call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/rack-1.6.4/lib/rack/session/abstract/id.rb:225:in `context'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/rack-1.6.4/lib/rack/session/abstract/id.rb:220:in `call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/sinatra-1.4.6/lib/sinatra/base.rb:2021:in `call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/sinatra-1.4.6/lib/sinatra/base.rb:1486:in `block in call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/sinatra-1.4.6/lib/sinatra/base.rb:1795:in `synchronize'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/sinatra-1.4.6/lib/sinatra/base.rb:1486:in `call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-core-0.13.1/lib/padrino-core/router.rb:84:in `block in call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-core-0.13.1/lib/padrino-core/router.rb:75:in `each'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/padrino-core-0.13.1/lib/padrino-core/router.rb:75:in `call'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/rack-test-0.6.3/lib/rack/mock_session.rb:30:in `request'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/rspec-padrino-0.2.2/lib/rspec/padrino/initializers/last_application.rb:34:in `block (2 levels) in <top (required)>'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/rack-test-0.6.3/lib/rack/test.rb:244:in `process_request'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/rack-test-0.6.3/lib/rack/test.rb:58:in `get'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/capybara-2.6.0/lib/capybara/rack_test/browser.rb:60:in `process'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/capybara-2.6.0/lib/capybara/rack_test/browser.rb:38:in `block in process_and_follow_redirects'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/capybara-2.6.0/lib/capybara/rack_test/browser.rb:37:in `times'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/capybara-2.6.0/lib/capybara/rack_test/browser.rb:37:in `process_and_follow_redirects'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/capybara-2.6.0/lib/capybara/rack_test/browser.rb:26:in `submit'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/capybara-2.6.0/lib/capybara/rack_test/form.rb:77:in `submit'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/capybara-2.6.0/lib/capybara/rack_test/node.rb:61:in `click'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/capybara-2.6.0/lib/capybara/node/element.rb:134:in `block in click'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/capybara-2.6.0/lib/capybara/node/base.rb:84:in `synchronize'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/capybara-2.6.0/lib/capybara/node/element.rb:134:in `click'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/capybara-2.6.0/lib/capybara/node/actions.rb:13:in `click_link_or_button'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/capybara-2.6.0/lib/capybara/session.rb:686:in `block (2 levels) in <class:Session>'
# /home/andrew/.rvm/gems/ruby-2.3.0/gems/capybara-2.6.0/lib/capybara/dsl.rb:51:in `block (2 levels) in <module:DSL>'
# ./spec/features/posts_features_spec.rb:25:in `block (3 levels) in <top (required)>'
# ./spec/spec_helper.rb:17:in `block (2 levels) in <top (required)>'
就像我說的，在瀏覽器中，沒有休息本地運行沒有問題，但這個測試斷裂，這是非常奇怪的，特別是因爲放映視圖（其不破）是：
<h4><%= @post.title %></h4>
<p><%= @post.body %></p>
<p><%= @post.user.name %></p>
我甚至試圖做的事情，而不在索引視圖中的部分，以：
<% @posts.each do |post| %>
<h4><%= post.title %></h4>
<p><%= post.body %></p>
<p><%= post.user.name %></p>
<% end %>
...但我得到完全相同的錯誤。 Wtf正在發生？
我推這個當前的狀態提交here
檢查'post.user'是零 – sbs
檢查零將有助於避免一個錯誤。我建議在'創建'點擊前查看一個[截圖]（https://github.com/mattheworiordan/capybara-screenshot），看看你的應用程序處於什麼狀態。可能數據沒有加載（IE'在數據被髮送回去之前，用戶在一秒鐘內是零）。 – dannypaz
將post.user放在控制器中返回用戶。 – Andy