Rails minitest assert_equal assert_match regexp问题

Question

我需要断言返回的字符串是否包含一个或另一个子字符串。

我是这样写的：

if mail.subject.include?('Pragmatic Store Order Confirmation')
      assert_equal 'Pragmatic Store Order Confirmation', mail.subject
    else
      assert_equal 'There was an error with your payment', mail.subject
    end

不过，我想知道如何用assert_equal或assert_match将其写成一行

assert_match( /(Pragmatic Store Order Confirmation) (There was an error with your payment)/, mail.subject )

但我只是不知道它或regexp是如何工作的。希望我已经说清楚了。谢谢!

Answer 1

你已经有了基本的想法，但是正则表达式是错误的。

/(Pragmatic Store Order Confirmation) (There was an error with your payment)/

这将匹配“务实的商店订单确认-您的付款出现了错误”，并捕获了“务实的商店订单确认”和“您的付款有错误”。

如果您想匹配某物或其他东西，请使用|。

/(Pragmatic Store Order Confirmation|There was an error with your payment)/

试试看

然而，与assert_include完全匹配更好。

subjects = [
  'Pragmatic Store Order Confirmation',
  'There was an error with your payment'
]
assert_include subjects, mail.subject

这相当于subjects.include?(mail.subject)。

最后，人们应该质疑为什么测试不知道邮件将包含哪个主题行。这应该取决于产生邮件的原因。你的测试应该像..。

if payment_error
  assert_equal 'There was an error with your payment', mail.subject
else
  assert_equal 'Pragmatic Store Order Confirmation', mail.subject
end