私は練習用の小さなRailstodoアプリを書いています。チュートリアルに従うのではなく、さまざまなことについて独自のRspecテストを作成しようとしています。テストは数回しかありませんが、いくつか失敗していて、その理由がわかりません。私はここに質問を投稿することを最後の手段にしようとしていますが、ここで質問をするたびに、問題の良い解決策を得ることができました。
ここにいくつかのコードがあります：
require 'spec_helper'
describe "TodosPages" do
describe "home page" do
before { visit root_path }
it "should have the content 'Todo App'" do
page.should have_content('Todo App')
end
it "should have title tag" do
page.should have_selector 'title'
end
it "should delete a todo and redirect to index" do
expect { click_link "Delete last todo" }.to change(Todo, :count).by(-1)
response.should redirect_to :action => 'index'
end
describe "Add Todo" do
subject { page }
before {click_button "Add todo"}
it { should have_selector('div.alert.alert-success', text: 'Todo Successfully Created') }
end
it "should have a error message" do
pending
end
it "should create a Todo" do
expect { click_button "Add todo" }.to change(Todo, :count).by(1)
end
end
end
todos_controller
class TodosController < ApplicationController
def index
@todo_items = Todo.all
@new_todo = Todo.new
render :index
end
def delete
@todo_delete = Todo.last
@todo_delete.delete
redirect_to :action => 'index'
end
def add
todo = Todo.create(:todo_item => params[:todo][:todo_item])
unless todo.valid?
flash[:error] = todo.errors.full_messages.join("<br>").html_safe
else
flash[:success] = "Todo Successfully Created"
end
redirect_to :action => 'index'
end
def complete
params[:todos_checkbox].each do |check|
todo_id = check
t = Todo.find_by_id(todo_id)
t.update_attribute(:completed, true)
end
redirect_to :action => 'index'
end
end
index.html.erb
<% @title = "Todo App" %>
<div class="container">
<div class="row">
<div class='span6' >
<h1 class="hero-unit">Simple Todo App</h1>
<p>All your todos here</p>
<%= form_for @new_todo, :url => { :action => "add" } do |f| %>
<%= f.text_field :todo_item %>
<%= f.submit "Add todo", class: "btn btn-primary" %>
<%end%>
<% if flash[:error] %>
<div class="alert alert-error">
<button type="button" class="close" data-dismiss="alert" >×</button>
<strong><%= flash[:error] %></strong>
</div>
<% end %>
<% if flash[:success] %>
<div class="alert alert-success">
<button type="button" class="close" data-dismiss="alert" >×</button>
<strong><%= flash[:success] %></strong>
</div>
<% end %>
<div class="well">
<%= form_tag("/todos/complete/", :method => "post") do %>
<ul style="list-style-type:none;">
<% @todo_items.each do |t| %>
<% if t.completed == true %>
<li style="color:grey;"> <%= check_box_tag "todos_checkbox[]",t.id %> <strike><%= t.todo_item %></strike> </li>
<% else %>
<li> <%= check_box_tag "todos_checkbox[]",t.id %> <%= t.todo_item %> </li>
<% end %>
<%end%>
</ul>
<%= submit_tag("Complete Todos", :class=>"btn btn-success") %>
<%end %>
</div> <!-- well -->
<%= link_to "Delete last todo", delete_path %>
</div> <!-- span6-->
</div> <!-- row -->
Failures:
1) TodosPages home page should create a Todo
Failure/Error: expect { click_button "Add todo" }.to change(Todo, :count).by(1)
count should have been changed by 1, but was changed by 0
# ./spec/views/index_page_spec.rb:29:in `block (3 levels) in <top (required)>'
2) TodosPages home page should delete a todo and redirect to index
Failure/Error: expect { click_link "Delete last todo" }.to change(Todo, :count).by(-1)
NoMethodError:
undefined method `delete' for nil:NilClass
# ./app/controllers/todos_controller.rb:11:in `delete'
# (eval):2:in `click_link'
# ./spec/views/index_page_spec.rb:14:in `block (4 levels) in <top (required)>'
# ./spec/views/index_page_spec.rb:14:in `block (3 levels) in <top (required)>'
3) TodosPages home page Add Todo
Failure/Error: it { should have_selector('div.alert.alert-success', text: 'Todo Successfully Created') }
expected css "div.alert.alert-success" with text "Todo Successfully Created" to return something
# ./spec/views/index_page_spec.rb:20:in `block (4 levels) in <top (required)>'
Finished in 0.33114 seconds
8 examples, 3 failures, 1 pending
Failed examples:
rspec ./spec/views/index_page_spec.rb:28 # TodosPages home page should create a Todo
rspec ./spec/views/index_page_spec.rb:13 # TodosPages home page should delete a todo and redirect to index
rspec ./spec/views/index_page_spec.rb:20 # TodosPages home page Add Todo
Randomized with seed 32260
前もって感謝します！
------Todo.rb
class Todo < ActiveRecord::Base
attr_accessible :todo_item, :completed
validates :todo_item, presence: true , length: { maximum: 25 }
end