timecop.travel 测试返回 false 而不是 true - rails答案

【问题标题】：timecop.travel test returns false instead of true - railstimecop.travel 测试返回 false 而不是 true - rails
【发布时间】：2020-11-09 06:10:59
【问题描述】：

我正在编写一个单元测试来检查 24 小时是否已过。如果 24 小时过去了，那么它应该返回 true

这是我的尝试

test   "messenger tag is more than 24 hours" do
        
        Timecop.travel 2.days.ago
        account = accounts(:messenger_v2)
        contact_d = Contact.create! account: account, name: 'Mr Right', phone_number: nil, external_id: '155581474881005', contact_type: 'MessengerV2', source: 'Inbound', is_registered: true, primary_contact: true
        conversation = Conversation.create! contact: contact_d, account: account, status: 'Open', unread: true, conversation_type: 'Private'
        Message.create! contact: contact_d, message_type: 'Text', text: 'I have some enquries', direction: 'IN', account: account, conversation: conversation, external_id: "in_a#{Time.now.to_i.to_s}"
        msg = conversation.messages.incoming
        time_created = msg.last.created_at
        messenger_tags = time_created < 24.hours.ago
        assert_equal true, messenger_tags
            
    end

当我在这里运行测试时是输出

test_messenger_tag_is_more_than_24_hours                        FAIL (0.14s)
        Expected: true
          Actual: false
        test/models/message_test.rb:175:in `block in <class:MessageTest>'

请帮忙

【问题讨论】：

conversation.messages.incoming 是否创建新消息？你能分享一下代码吗？
@Anuj 我已经添加了

标签： ruby-on-rails ruby ruby-test timecop

【解决方案1】：

创建消息后，您需要使用Timecop.returnturn off Timecop。

test "messenger tag is more than 24 hours" do
    Timecop.travel 2.days.ago
    account = accounts(:messenger_v2)
    contact_d = Contact.create! account: account, name: 'Mr Right', phone_number: nil, external_id: '155581474881005', contact_type: 'MessengerV2', source: 'Inbound', is_registered: true, primary_contact: true
    conversation = Conversation.create! contact: contact_d, account: account, status: 'Open', unread: true, conversation_type: 'Private'
    Message.create! contact: contact_d, message_type: 'Text', text: 'I have some enquries', direction: 'IN', account: account, conversation: conversation, external_id: "in_a#{Time.now.to_i.to_s}"
    Timecop.return
    msg = conversation.messages.incoming
    time_created = msg.last.created_at
    messenger_tags = time_created < 24.hours.ago
    assert_equal true, messenger_tags
end

更新或者您可以阻止Timecop.travel，以避免调用@Stefan 在下面的评论中提到的Timecop.return

test "messenger tag is more than 24 hours" do
    Timecop.travel 2.days.ago do
        account = accounts(:messenger_v2)
        contact_d = Contact.create! account: account, name: 'Mr Right', phone_number: nil, external_id: '155581474881005', contact_type: 'MessengerV2', source: 'Inbound', is_registered: true, primary_contact: true
        conversation = Conversation.create! contact: contact_d, account: account, status: 'Open', unread: true, conversation_type: 'Private'
        Message.create! contact: contact_d, message_type: 'Text', text: 'I have some enquries', direction: 'IN', account: account, conversation: conversation, external_id: "in_a#{Time.now.to_i.to_s}"
        msg = conversation.messages.incoming
        @time_created = msg.last.created_at
    end
    messenger_tags = @time_created < 24.hours.ago
    assert_equal true, messenger_tags
end

【讨论】：

Timecop.travel 也接受一个自动返回当前时间的块。
是的@Stefan 我已将您的建议包含在答案中。谢谢你:)
添加块会导致错误NameError: undefined local variable or method `conversation' for #<MessageTest:0x0000558e2daa43b0>@SampatBadhe
哎呀我的错。这是由于变量的范围。我已经更新了答案，请你现在看看。