Question

我的rspec中有以下代码（目的是测试控制器功能是否正常工作）。

require 'rails_helper'

describe CollaborationsController do

include TestFactories

 before do
  # @user = create(:user)
  @user = authenticated_user
  # @wiki = create(:wiki, user: @user)
  @wiki = authenticated_wiki
  sign_in @user
 end

 describe "#create" do
  expect (@user.collaborations.find_by_wiki_id(@wiki.id)).to be_nil
  post :create, {wiki_id: @wiki.id}
  expect(@user.collaborations.find_by_wiki_id(@wiki.id)).not_to be_nil
 end

 describe "#destroy" do
  expect (@user.collaborations).to eq (0)
  post :create, {wiki_id: @wiki.id}
  expect (@user.collaborations).to eq (1)

  delete :destroy, {wiki_id: @wiki.id, id: collaborations.id}
  expect(@user.collaborations.find_by_wiki_id(@wiki.id)).not_to be_nil
 end

 end


 def authenticated_user
  user = User.new(email: "email#{rand}@fake.com", password: 'password')
  user.skip_confirmation!
  user.save
  user
 end


 def authenticated_wiki
  wiki = Wiki.new(title: "Dit is de title", body: 'password')
  wiki.save
  wiki
 end

当我运行它时，我收到以下错误：

 undefined method `collaborations' for nil:NilClass

这对我来说有点奇怪，因为当我在控制台中尝试关系时一切正常。

u = User.first u.collaborations给出了这个fe

 collaboration Load (0.3ms)  SELECT "collaborations".* FROM "collaborations"   WHERE "collaborations"."user_id" = ?  [["user_id", 1]]
 => #<ActiveRecord::Associations::CollectionProxy [#<Collaboration id: 18,     user_id: 1, wiki_id: 1, created_at: "2015-02-26 08:54:36", updated_at: "2015-02-26   08:54:36">, #<Collaboration id: 19, user_id: 1, wiki_id: 1, created_at: "2015-02-   26 09:07:19", updated_at: "2015-02-26 09:07:19">]> 
 2.1.5 :003 >

关于我在这里做错什么的快速思考？

Answer 1

我担心您的代码无效。您将测试代码放在describe块中，但它应该包含it。尝试格式化：

describe "#create" do
  expect (@user.collaborations.find_by_wiki_id(@wiki.id)).to be_nil
  post :create, {wiki_id: @wiki.id}
  expect(@user.collaborations.find_by_wiki_id(@wiki.id)).not_to be_nil
end

describe "#destroy" do
  expect (@user.collaborations).to eq (0)
  post :create, {wiki_id: @wiki.id}
  expect (@user.collaborations).to eq (1)

  delete :destroy, {wiki_id: @wiki.id, id: collaborations.id}
  expect(@user.collaborations.find_by_wiki_id(@wiki.id)).not_to be_nil
end

像这样：

describe "#create" do
  it "sets the collaborations" do
    expect (@user.collaborations.find_by_wiki_id(@wiki.id)).to be_nil
    post :create, {wiki_id: @wiki.id}
    expect(@user.collaborations.find_by_wiki_id(@wiki.id)).not_to be_nil
  do
end

describe "#destroy" do
  it "destroys collaborator" do
    expect (@user.collaborations).to eq (0)
    post :create, {wiki_id: @wiki.id}
    expect (@user.collaborations).to eq (1)

    delete :destroy, {wiki_id: @wiki.id, id: collaborations.id}
    expect(@user.collaborations.find_by_wiki_id(@wiki.id)).not_to be_nil
  end
end

有时缺少it会导致奇怪的行为和误导性的错误消息。

希望这能解决你的问题！

Answer 2

尝试使用before(:each)

此外，我想在describe block中执行类似let(:user){ authenticated_user }的操作。

在一个it块中执行期望

控制器rspec运行不正常

2 个答案: