我正在构建一个简单的机器人,我需要测试以下方法,但是无论如何我都会遇到一个看起来像是无限循环的事物。
我要测试的方法
def main_method(token)
@id_array = []
Telegram::Bot::Client.run(token) do |bot|
bot.listen do |message|
@id_array.push(message.chat.id) unless @id_array.include?(message.chat.id)
case message.text
when '/quote'
quote, author = RandomQuote.new.get_quote!
bot.api.send_message(chat_id: message.chat.id, text: "#{quote}\n\t- Author: #{author}")
when '/joke'
bot.api.send_message(chat_id: message.chat.id, text: "What's your name?")
bot.listen do |name|
if name
@joke = Jokes.new.random_joke(name.text)
break
end
end
bot.api.send_message(chat_id: message.chat.id, text: @joke.to_s)
when '/help'
bot.api.send_message(chat_id: message.chat.id, text: 'Type /joke to receive a custom joke with your name')
bot.api.send_message(chat_id: message.chat.id, text: 'Type /quote to receive an inspirational quote')
end
end
end
结束
我的机器人正在工作并完成任务,我只需要任何测试用例即可证明其功能正常。
嗯,这不是一种“无限循环”,它是事件监听器(bot.listen
),它是一种轮询某些端口以获取某些消息,然后在此事件上触发响应的方法。
因此,您需要使用OOP逻辑将该方法拆分为小的块,因为一种特定方法的情况很多,然后将每个块作为模拟使用的专用类进行测试。
要处理初始化,您可以使用VCR卡带将实际请求存根到API中,并将令牌替换为测试令牌。
例如,我们可以模拟main_method以确保:调用了listener,如下所示:
class MyRubyBot
def main_method(token)
...
end
end
around do |example|
VCR.use_cassette('telegram_bot') do
example.run
end
end
it 'fires run on telegram bot' do
expect(telegram_bot).to receive(:run).with("YOU_TEST_TOKEN")
MyRubyBot.new.main_method("YOU_TEST_TOKEN")
end
it 'fires listener' do
expect_any_instance_of(Telegram::Bot::Client).to receive(:listen)
MyRubyBot.new.main_method("YOU_TEST_TOKEN")
end
然后您需要将每个when
中的逻辑放入专用的类中,例如:
class QuoteMessage
attr_accessor :bot, :message
def initialize(bot:, message:)
self.bot = bot
self.message = message
end
def send_response
quote, author = RandomQuote.new.get_quote!
bot.api.send_message(chat_id: message.chat.id, text: "#{quote}\n\t- Author: #{author}")
end
end
class QuoteMessage
attr_accessor :bot, :message, :joke
def initialize(bot:, message:)
self.bot = bot
self.message = message
end
def send_response
bot.api.send_message(chat_id: message.chat.id, text: "What's your name?")
bot.listen do |name|
if name
@joke = Jokes.new.random_joke(name.text)
break
end
end
bot.api.send_message(chat_id: message.chat.id, text: @joke.to_s)
end
end
class HelpMessage
attr_accessor :bot, :message
def initialize(bot:, message:)
self.bot = bot
self.message = message
end
def send_response
bot.api.send_message(chat_id: message.chat.id, text: 'Type /joke to receive a custom joke with your name')
bot.api.send_message(chat_id: message.chat.id, text: 'Type /quote to receive an inspirational quote')
end
end
太好了,现在我们可以分别对模拟机器人类进行任何测试,举个简单的例子:
describe QuoteMessage do
let(:bot) { double }
let(:api) { double }
let(:message) { double }
it 'fires send_message' do
expect(bot).to receive(:api).and_return(api)
expect(api).to receive(:send_message).with(...)
described_class.new(bot: bot, message: message).send_response
end
end
# ... same logic for other classes
快到了!现在我们可以使用新的MessageHandler类来重构main_method,如下所示:
def main_method(token)
@id_array = []
Telegram::Bot::Client.run(token) do |bot|
bot.listen do |message|
@id_array.push(message.chat.id) unless @id_array.include?(message.chat.id)
MessageHandler.new(bot: bot, message: message).handle_message
end
end
end
class MessageHandler
attr_accessor :bot, :message
def initialize(bot:, message:)
self.bot = bot
self.message = message
end
def handle_message
case message.text
when '/quote'
QuoteMessage.new(bot: bot, message: message).send_response
when '/joke'
joke_message = JokeMessage.new(bot: bot, message: message)
joke_message.send_response
@joke = joke_message.joke
when '/help'
HelpMessage.new(bot: bot, message: message).send_response
end
end
end
因此,现在我们可以通过MessageHandler
方法测试and_yield
的火灾:
it 'fires MessageHandler' do
message = 'any_message'
expect(bot).to receive(:listen).and_yield(MessageHandler.new(bot: bot, message: message))
MyRubyBot.new.main_method("YOU_TEST_TOKEN")
end
至少,我们需要测试MessageHandler,它现在应该非常容易,例如:
describe MessageHandler do
subject { described_class.new(bot: bot, message: message) }
let(:bot) { double }
let(:api) { double }
context 'when quote' do
let(:message) { '/quote' }
let(:quote_message) { instance_double QuoteMessage }
it 'fires QuoteMessage instance' do
expect(QuoteMessage).to receive(:new).with(bot: bot, message: message).and_return quote_message
expect(quote_message).to receive(:send_response)
subject.handle_message
end
end
end
当然,我可能在某些细节上是错误的,但总体而言,我想提出这种方法。
[JFYI:尝试问一些更具体的问题,因为看起来您在这里有一个任务,并且您决定在此处以相同的形式放置它,所以,这不是最好的方法,为什么许多人会忽略它。我希望它能对您有所帮助!