Telegram test Api

Telegram API emulation web server for testing telegram bots which lets you test bot's logic without using telegram API.

Installation

npm install telegram-test-api

Usage

Implement bot with any logic and any library

class TestBot {
  constructor(bot) {
    bot.onText(/\/ping/, (msg, match)=> {
      let chatId = msg.from.id;
      let opts = {
        reply_to_message_id: msg.message_id,
        reply_markup: JSON.stringify({
          keyboard: [[{text: 'ok 1'}]],
        }),
      };
      bot.sendMessage(chatId, 'pong', opts);
    });

    bot.onText(/\/start/, (msg, match)=> {
      let chatId = msg.from.id;
      let opts = {
        reply_to_message_id: msg.message_id,
        reply_markup: JSON.stringify({
          keyboard: [[{text: 'Masha'}, {text: 'Sasha'}]],
        }),
      };
      bot.sendMessage(chatId, 'What is your name?', opts);
    });

    bot.onText(/Masha/, (msg, match)=> {
      let chatId = msg.from.id;
      let opts = {
        reply_to_message_id: msg.message_id,
        reply_markup: JSON.stringify({
          keyboard: [[{text: 'Hello!'}]],
        }),
      };
      bot.sendMessage(chatId, 'Hello, Masha!', opts);
    });

    bot.onText(/Sasha/, (msg, match)=> {
      let chatId = msg.from.id;
      let opts = {
        reply_to_message_id: msg.message_id,
        reply_markup: JSON.stringify({
          keyboard: [[{text: 'Hello!'}]],
        }),
      };
      bot.sendMessage(chatId, 'Hello, Sasha!', opts);
    });
  }
}

Start server

You can use npm start to start server using settings from config/config.json or include it in your node.js module and use like this:

  const TelegramServer = require('telegram-test-api');
  let serverConfig = {port: 9000};
  let server = new TelegramServer(serverConfig);
  server.start().then(()=>yourTests());

Options

You can pass options like this:

{
  "port": 9000,
  "host": "localhost",
  "storage": "RAM",
  "storeTimeout": 60
}

• storeTimeout - how many seconds you want to store user and bot messages which were not fetched by bot or client.
• storage - where you want to store messages. Right now, only RAM option is implemented.

Make requests

Requests from bot

You can use any bot API which allows custom Telegram URL like this:

const 
  TelegramBot    = require('node-telegram-bot-api');

  let botOptions = {polling: true, baseApiUrl: server.ApiURL};
  telegramBot = new TelegramBot(token, botOptions);

Requests from client

Client emulation is very easy. You can use built in client class:

    let client = server.getClient(token);
    let message = client.makeMessage('/start');
    client.sendMessage(message);
    client.getUpdates();

Or you can take a look at src/modules/telegramClient and make client in any language you want.

Stop server

server.stop().then(()=>doMore());

Full sample

Your test code can look like this:

const TelegramServer = require('telegram-test-api');
const TelegramBot = require('node-telegram-bot-api');

describe('Telegram bot test', () => {
  let serverConfig = {port: 9001};
  const token = 'sampleToken';
  let server;
  let client;
  beforeEach(() => {
    server = new TelegramServer(serverConfig);
    return server.start().then(() => {
      client = server.getClient(token);
    });
  });

  afterEach(function () {
    this.slow(2000);
    this.timeout(10000);
    return server.stop();
  });

  it('should greet Masha and Sasha', function testFull() {
    this.slow(400);
    this.timeout(800);
    let message = client.makeMessage('/start');
    let telegramBot,
        testBot;
    return client.sendMessage(message)
      .then(()=> {
        let botOptions = {polling: true, baseApiUrl: server.ApiURL};
        telegramBot = new TelegramBot(token, botOptions);
        testBot = new TestBot(telegramBot);
        return client.getUpdates();
      })
      .then((updates)=> {
        console.log(`Client received messages: ${JSON.stringify(updates.result)}`);
        if (updates.result.length !== 1) {
          throw new Error('updates queue should contain one message!');
        }
        let keyboard = JSON.parse(updates.result[0].message.reply_markup).keyboard;
        message = client.makeMessage(keyboard[0][0].text);
        client.sendMessage(message);
        return client.getUpdates();
      })
      .then((updates)=> {
        console.log(`Client received messages: ${JSON.stringify(updates.result)}`);
        if (updates.result.length !== 1) {
          throw new Error('updates queue should contain one message!');
        }
        if (updates.result[0].message.text !== 'Hello, Masha!') {
          throw new Error('Wrong greeting message!');
        }
        return true;
      })
  });
});

Debugging

This project uses debug module for verbose logging, to enable it, please launch your tests with env variable DEBUG=TelegramServer:*, like DEBUG=TelegramServer:* ./node_modules/mocha/bin/mocha --use_strict --exit.

Changelog

• 1.0.2 Move logging to debug module, clear storage when stopping server.
• 1.0.1 Fix slow server stop
• 1.0.0 Such much refactoring
• 0.0.4 Public release