自定义验证方法和 rspec 测试

问题描述：

我有一个自定义验证方法，它使用正则表达式来匹配用户输入，然后在失败时抛出错误.

I have a custom validation method that uses a regexp to match on a users input and then throw an error if it fails.

我试图理解为什么以下场景通过但第二个示例抛出

Im trying to understand why the following scenario passes but the second example throws

undefined method match

示例 1(通过)

# Custom Validation
def format_mobile
 regexp = "/^(07[\d]{9})$/"
  if !(mobile_no.match(regexp))
   errors[:base] << "Please check your Mobile Number"
  end
end

# rspec test
it 'is invalid with an Invalid mobile number (Company)' do
 user = FactoryGirl.build(:user, company_form: true, mobile_no: '078055031888')
 user.format_mobile
 expect(user.errors[:base]).to include("Please check your Mobile Number")
end

示例 2(抛出错误)

# Custom Validation
def format_mobile
 regexp = "/^(07[\d]{9})$/"
  if !(mobile_no.match(regexp))
   errors[:base] << "Please check your Mobile Number"
  end
end

# rspec test
it 'is invalid with a nil mobile number (Company)' do
 user = FactoryGirl.build(:user, company_form: true, mobile_no: nil)
 user.format_mobile
 expect(user.errors[:base]).to include("Please check your Mobile Number")
end

任何关于为什么第二个失败的指针将不胜感激，我将如何让该测试通过

Any pointers as to why the second fails would be greatly appreciated, and how would i get that test to pass

谢谢

编辑

所以如果说提供了 mobile_no 07805362669，这将通过测试

so this will pass a test if say the mobile_no 07805362669 was provided

def format_mobile
 regexp = /^(07[\d]{9})/
  if !(regexp.match(mobile_no))
   errors[:base] << "Please check your Mobile Number"
  end
end

但是 mobile_no 为 nil 的测试仍然失败

but the tests where mobile_no is nil still fail

查看参数，如果没有 mobile_no 没有输入，它会作为mobile_no"=>"传递，尽管不是吗?

looking at the params if no mobile_no has no input it is passed as "mobile_no"=>"", this is still nil though isnt it ?

答

nil 是 ruby 中的一个 nil 类，没有匹配方法.

nil is a nil class in ruby and doesn't have a match method.

String 确实有匹配方法.

正如您传递的 regexp 一样字符串到正则表达式.所以简单地称之为相反

As does regexp where you pass the string to the regexp. So simply call it the other way around

if !(regexp.match(mobile_no))
  #do_whatever
end

自定义验证方法和 rspec 测试

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