Question

我试图测试我的应用，以便当用户投票选择某种食物时，user.votes的数量和food.votes都会上升。到目前为止，我无法做到这一点，而且我不确定我是否错误地写了我的测试，或者建立了一个不能让测试通过的工厂。它在我在控制台中手动测试时起作用，所以我知道它确实起作用，但是测试不同意。

FactoryGirl.define do
factory :vote do |f|
    f.user_id user
    f.food_id food
end
end

def create
@vote = Vote.new(vote_params)

if @vote.save
    flash[:notice] = "Thanks for voting!"
else
    flash[:notice] = "Something went wrong"
end
end

before(:each) do
  @user = create(:user)
  sign_in(@user)
  @food = create(:food)
end

describe "POST #create" do
context "with valid attributes" do
  it "creates a new vote" do
    vote_params = FactoryGirl.attributes_for(:vote)
    expect { post :create, params: { vote: vote_params } }.to change(Vote, :count).by(1)
  end

  it "Updates @user vote count" do
    vote_params = FactoryGirl.attributes_for(:vote)
    expect { post :create, params: { vote: vote_params } }.to change(@user.votes, :count).by(1)
  end

  it "Updates @food vote count" do
    vote_params = FactoryGirl.attributes_for(:vote)
    expect { post :create, params: { vote: vote_params } }.to change(@food.votes, :count).by(1)
  end
end
end

Failures:

1) VotesController POST #create with valid attributes Updates @user vote count
 Failure/Error: expect { post :create, params: { vote: vote_params } }.to  change(@user.votes, :count).by(1)
   expected #count to have changed by 1, but was changed by 0
 # ./spec/controllers/votes_controller_spec.rb:27:in `block (4 levels) in <top  (required)>'

2) VotesController POST #create with valid attributes Updates @food vote count
 Failure/Error: expect { post :create, params: { vote: vote_params } }.to change(@food.votes, :count).by(1)
   expected #count to have changed by 1, but was changed by 0
 # ./spec/controllers/votes_controller_spec.rb:32:in `block (4 levels) in <top (required)>'

 Finished in 2.99 seconds (files took 4.66 seconds to load)
 36 examples, 2 failures

Failed examples:

rspec ./spec/controllers/votes_controller_spec.rb:25 # VotesController POST     #create with valid attributes Updates @user vote count
rspec ./spec/controllers/votes_controller_spec.rb:30 # VotesController POST #create with valid attributes Updates @food vote count

Answer 1

好的，有足够的信心来猜测。我认为，问题是vote_params来自工厂（可能带有user_id / food_id的硬编码值） - 但不是您正在测试的真实@user和@food反对。您需要将这些值放入vote_params我可以建议以下内容：

context "with valid attributes" do
  # Set vote-params from factory, then merge in the @user/@food ids
  let(:vote_params) { FactoryGirl.attributes_for(:vote).merge(:user_id => @user.id, :vote_id => @vote.id) }

  it "creates a new vote" do
    expect { post :create, params: { vote: vote_params } }.to change(Vote, :count).by(1)
  end

  it "Updates @user vote count" do
    expect { post :create, params: { vote: vote_params } }.to change(@user.votes, :count).by(1)
  end

  it "Updates @food vote count" do
    expect { post :create, params: { vote: vote_params } }.to change(@food.votes, :count).by(1)
  end
end

如何使用另一家工厂的一家工厂的数据

1 个答案: