偶尔失败的rspec测试

Question

我的测试大部分时间都通过了：

....

Finished in 1.58 seconds
4 examples, 0 failures

Randomized with seed 29966

但是有时候会失败：

.F..

Failures:

  1) Admin::SessionsController POST create authenticates correct users submissions
     Failure/Error: expect(session[:user_id]).to be @user.id

       expected #<Fixnum:3> => 1
            got #<NilClass:4> => nil

       Compared using equal?, which compares object identity,
       but expected and actual are not the same object. Use
       `expect(actual).to eq(expected)` if you don't care about
       object identity in this example.
     # ./spec/controllers/admin/sessions_controller_spec.rb:12:in `block (3 levels) in <top (required)>'

Finished in 1.24 seconds
4 examples, 1 failure

Failed examples:

rspec ./spec/controllers/admin/sessions_controller_spec.rb:10

有没有人能看到的特定韵律或原因？

规格：

  describe "POST create" do
    it "authenticates correct users submissions" do
      post :create, email: @user.email, password: @user.password
      expect(session[:user_id]).to be @user.id
    end

    it "correctly sets @invalid flag" do
      post :create, email: "wrong", password: "wrong"
      assigns(:invalid).should be_true
    end
  end

正在测试的控制器动作：

  def create
    user = Admin::User.authenticate(params[:email], params[:password])
    if user
      session[:user_id] = user.id
      redirect_to admin_root_path
    else
      @invalid = true
      render :new
    end
  end

任何帮助将非常感激。 让我知道是否需要更多详细信息。

Answer 1

可能是因为RSpec默认情况下以随机顺序运行测试。

创建用户之前，似乎正在调用您引用的测试。 如果要解决此问题，请确保在before块中创建了用户。 或者，可能是因为用户已经存在，因此操作失败。