Rails controller test error: count didn't change by 1

Question

我正在为一个项目编写一些模型。我有一个 User.rb class，它具有以下属性：

first_name: string

last_name: string

address_line_1: string

address_line_2: string

town: string

post_code: string

tel_no: string

email: string

password_digest: string

type:

我有第二个模型 Employee.rb 继承自 User.rb。

User.rb 和 Employee.rb 都搭建了脚手架。 User 首先搭建，Employee 使用 --parent=User 选项搭建。

当运行测试时，我得到以下错误：

Failure:
EmployeesControllerTest#test_should_create_employee [filepath]:
"Employee.count" didn't change by 1.
Expected: 3
Actual :2

这是 employees_controller_test 中失败的代码：

setup do
  @employee = employees(:employee_one)
end

test "should create employee" do
  assert_difference('Employee.count') do
    post employees_url, params: { employee: { first_name: @employee.first_name, last_name: @employee.last_name, address_line_1: @employee.address_line_1, address_line_2: @employee.address_line_2, town: @employee.town, post_code: @employee.post_code, tel_no: @employee.tel_no, email: @employee.email, password_digest: "@employee.password_digest", type: @employee.type } }
  end

  assert_redirected_to employee_url(Employee.last)
end

这是我的员工固定装置，在 employees.yml

employee_one:
  first_name: "Employee1"
  last_name: "Example"
  address_line_1: "3 High Street"
  address_line_2: "Flat 3"
  town: "Glasgow"
  post_code: "G15 9BL"
  tel_no: "0123847439"
  email: "employee1@employee1.com"
  password_digest: "password"
  type: "Employee"

我想我的 User.rb 也很重要，包括：

class User < ApplicationRecord
  validates :first_name,      presence: true, length: { maximum: 50 }
  validates :last_name,       presence: true, length: { maximum: 50 }
  validates :address_line_1,  presence: true, length: { maximum: 50 }
  validates :address_line_2,  presence: true, length: { maximum: 50 }, :allow_nil => true
  validates :town,            presence: true, length: { maximum: 50 }
  validates :post_code,       presence: true, length: { maximum: 10 }
  validates :tel_no,          presence: true, length: { maximum: 14 }
  validates :email,           presence: true, length: { maximum: 50 }
  validates :password_digest, presence: true, length: { maximum: 256 }
  validates :type,            presence: true, length: { maximum: 15 }
end

我已经在这里待了 4 个小时左右，我想我只需要一双新鲜的眼睛。

如果我继续rails console --sandbox并使用User.create单独输入2个用户，然后单独输入2个员工，没有问题。

什么导致了错误？

Answer 1

使用 --parent=User 选项搭建 employee.rb 模型，不会自动添加从 user.rb 到 employee.rb 的继承参数。

这意味着在 employees_controller.rb 中，定义允许参数的 employee_params 方法是：

def employee_params
  params.require(:employee).permit(:type)
end

这意味着当测试在 Employees table 中创建一个条目时，除了 type 之外的每个参数都没有被插入。

我通过将 employee_params 更改为：

来修复它

def employee_params
  params.require(:employee).permit(:first_name, :last_name, :address_line_1, :address_line_2, :town, :post_code, :tel_no      , :email, :password_digest, :type)
end

现在所有测试都通过了。

Rails controller test error: count didn't change by 1

Rails controller test error: count didn't change by 1

ruby

ruby-on-rails

minitest