Question

我正在阅读Rails 3指南，并查看Testing Mailers部分。

但是，按照这些说明，我想知道它们是否有错误，所做的断言永远不会是真的。

这是文档中的相关部分：

http://guides.rubyonrails.org/testing.html#testing-your-mailers

10.2.2基本测试用例

在此测试中，@ expected是您可以使用的TMail :: Mail实例   在你的测试中。它在ActionMailer :: TestCase中定义。上面的测试   使用@expected构建一个电子邮件，然后通过电子邮件断言   由自定义邮件程序创建。邀请夹具是主体   电子邮件，用作断言的示例内容。帮助者   read_fixture用于读取此文件中的内容。

这就是为什么我认为是这样的：

test_card_update_notification（CardSenderMailerTest）[/Users/victorstan/Sites/ContactMonkey/test/unit/card_sender_mailer_test.rb:21]：

<"Date: Mon, 12 Mar 2012 22:54:38 -0400\r\nFrom: ContactMonkey <support@contactmonkey.com>\r\nTo: test@contactmonkey.com\r\nMessage-ID: <4f5eb6ee903b3_710a3fd4d6034ec8484b1@Victor-Stans-MacBook-Pro.local.mail>\r\nSubject: Bob Smith's ContactMonkey Card Has Been Updated!\r\nMime-Version: 1.0\r\nContent-Type: text/plain;\r\n charset=UTF-8\r\nContent-Transfer-Encoding: 7bit\r\n\r\nHi Bob!\r\nYou asked to be notified when Bob Smith's card had been updated. You can view and download the new card by visiting their profile page:\r\n\r\nhttp://contactmonkey.com/bob\r\n\r\nUpdates at a glance:\r\n\r\n\tCard:\r\n\t\tTitle: Bauws\r\n\t\tOrganization: Fancy Org\r\n\t\tPersonal url: bob\r\n\r\n\tPhone:\r\n\t\tLabel: work\r\n\t\tNumber: 555 555 1234\r\n\r\n\tAddress:\r\n\t\tLabel: work\r\n\t\tStreet: 145 Dovercourt\r\n\t\tStreet2: \r\n\t\tCity: Toronto\r\n\t\tPostalcode: M6J3C5\r\n\t\tRegion: ON\r\n\t\tCountry: Canada\r\n\r\n\r\n\r\nMake it a great day!\r\nContactMonkey\r\n\r\nProblems? Write to us at support@contactmonkey.com, or just reply to this message.\r\nhttp://contactmonkey.com\r\n"> expected but was
<"Date: Mon, 12 Mar 2012 22:54:38 -0400\r\nFrom: ContactMonkey <support@contactmonkey.com>\r\nTo: test@contactmonkey.com\r\nMessage-ID: <4f5eb6eeaeae1_710a3fd4d6034ec848559@Victor-Stans-MacBook-Pro.local.mail>\r\nSubject: Bob Smith's ContactMonkey Card Has Been Updated!\r\nMime-Version: 1.0\r\nContent-Type: text/plain;\r\n charset=UTF-8\r\nContent-Transfer-Encoding: 7bit\r\n\r\nHi Bob!\r\nYou asked to be notified when Bob Smith's card had been updated. You can view and download the new card by visiting their profile page:\r\n\r\nhttp://contactmonkey.com/bob\r\n\r\nUpdates at a glance:\r\n\r\n\tCard:\r\n\t\tTitle: Bauws\r\n\t\tOrganization: Fancy Org\r\n\t\tPersonal url: bob\r\n\r\n\tPhone:\r\n\t\tLabel: work\r\n\t\tNumber: 555 555 1234\r\n\r\n\tAddress:\r\n\t\tLabel: work\r\n\t\tStreet: 145 Dovercourt\r\n\t\tStreet2: \r\n\t\tCity: Toronto\r\n\t\tPostalcode: M6J3C5\r\n\t\tRegion: ON\r\n\t\tCountry: Canada\r\n\r\n\r\n\r\nMake it a great day!\r\nContactMonkey\r\n\r\nProblems? Write to us at support@contactmonkey.com, or just reply to this message.\r\nhttp://contactmonkey.com\r\n">.

注意区别？

Message-ID: <4f5eb6ee903b3_710a3fd4d6034ec8484b1@Victor-Stans-MacBook-Pro.local.mail>

VS

Message-ID: <4f5eb6eeaeae1_710a3fd4d6034ec848559@Victor-Stans-MacBook-Pro.local.mail>

我该如何解释？据我所知，这不属于我的数据或控制范围。

我正在使用的断言：

assert_equal @expected.encoded, CardSenderMailer.card_update_notification(card, followers, field_updates).encoded

这与文档中使用的非常类似：

assert_equal @expected.encoded, UserMailer.create_invite('me@example.com', 'friend@example.com', @expected.date).encoded

Answer 1

它不漂亮，但我做了类似以下的事情：

test "able to mail something" do
    # bunch of @expected statements
    assert_equal encode(@expected), encode(MyMailer.mail(@user))
end  

def encode message
    message.encoded.gsub(/Message-ID: <.+>/, '').gsub(/Date: .+/, '')
end

如果您希望分享整个邮件程序测试，请修改test_helper.rb并添加：

class ActionMailer::TestCase
    def encode message
        message.encoded.gsub(/Message-ID: <.+>/, '').gsub(/Date: .+/, '')
    end
end

Answer 2

使用mocha存根'has_message_id？'有类似的结果。在我的测试中，我补充说：

Mail::Message.any_instance.stubs('has_message_id?').returns(true)

Answer 3

我使用.gsub(/Message-ID: <[\s\S]+>/, '')

进行测试

这样就可以做出断言：

assert_equal @expected.encoded.gsub(/Message-ID: <[\s\S]+>/, ''), CardSender.card_update_notification(card, followers, field_updates).encoded.gsub(/Message-ID: <[\s\S]+>/, '')

ActionMailer测试，来自Rails指南文档的assert_equal永远不可能是真的吗？

这是文档中的相关部分：

3 个答案: