验证包含值时出现验证错误：Rails

Question

我在测试包含在我的模型验证中时遇到错误。这是我的 model.rb

class Resident < ActiveRecord::Base
  validates :room_number,presence: true,uniqueness: {case_sensitive: false}
  validates :roll_number,presence: true,uniqueness:{case_sensitive: false}
  validates :name, presence: true,length: { maximum: 50 }
  validates :hostel,presence: true,inclusion: {in:%w(a b c h pg j frc e g i),message: "%{value} is not a valid hostel"}
end

model_test.rb 仅包含测试

 test "hostel must be valid" do
    if @resident.hostel == %w(a b c h pg j frc e g i)
      assert @resident.valid?
    else
      assert_not @resident.valid?
    end

我收到了这个错误

     test_should_be_valid#ResidentTest (1455250549.01s)
        Failed assertion, no message given.
        test/models/resident_test.rb:9:in `block in <class:ResidentTest>'
8 tests, 8 assertions, 1 failures, 0 errors, 0 skips

我该如何处理它。

Answer 1

我认为您首先应该尝试在您的测试中创建一个 Resident 的实例，并使用有效或无效的 hostel 属性。然后你应该检查你的期望。

test "hostel must be valid" do
  resident = Resident.create(@valid_attributes.merge({:hostel => 'a'})
  assert resident.valid?
end

test "hostel must be invalid" do
  resident = Resident.create(@valid_attributes.merge({:hostel => 'z'})
  assert_not resident.valid?
end

注意：%w(a b c h pg j frc e g i) 是一个字符串数组。 if @resident.hostel == %w(a b c h pg j frc e g i) 不能工作，因为你检查一个字符串（我认为）对照一个数组。