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An Integration Test Library for Telegram Messenger Bots on top of Pyrogram.

Project description

TgIntegration

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An Integration Test Framework for Bots on Telegram Messenger on top of Pyrogram.

No more mocking of every single Bot API object, just test your bot in real-world scenarios.

  • Free software: MIT license

Features

  • Log into a Telegram user account and interact with bots
  • Send messages and wait for the response
  • Perform inline queries and match the expected result
  • Automate everything about Telegram bots

Installation

All hail pip!

$ pip install tgintegration --upgrade

Requirements

Same as Pyrogram:

Usage

Suppose we want to write integration tests for @BotListBot by sending it a couple of messages and asserting that it responds the way it should. First, let’s create a BotIntegrationClient:

from tgintegration import BotIntegrationClient

client = BotIntegrationClient(
    bot_under_test='@BotListBot',
    session_name='my_account',  # Arbitrary file path to the Pyrogram session file
    api_id=API_ID,  # See "Requirements" above, ...
    api_hash=API_HASH,  # alternatively use a `config.ini` file
    max_wait_response=15,  # Maximum timeout for bot responses
    min_wait_consecutive=2  # Minimum time to wait for consecutive messages
)

client.start()
client.clear_chat()  # Let's start with a blank screen

Now let’s send the /start command to the bot_under_test and “await” exactly three messages:

response = client.send_command_await("start", num_expected=3)

assert response.num_messages == 3
assert response.messages[0].sticker  # First message is a sticker

The result should look like this:

Sending /start to @BotListBot

Let’s examine these buttons in the response…

# Extract first (and only) inline keyboard from the replies
inline_keyboard = response.inline_keyboards[0]

# Three buttons in the first row
assert len(inline_keyboard.rows[0]) == 3

We can also query and press the inline keyboard buttons:

# Click the first button matching the pattern
examples = response.inline_keyboards[0].press_button_await(pattern=r'.*Examples')

assert "Examples for contributing to the BotList" in examples.full_text

As the bot edits the message, press_button_await automatically listens for MessageEdited updates and picks up on the edit, returning it as Response.

Get Examples from @BotListBot

So what happens when we send an invalid query or the bot fails to respond?

try:
    # The following instruction will raise an `InvalidResponseError` after
    # `client.max_wait_response` seconds. This is because we passed `raise_no_response = True`
    # in the client initialization.
    client.send_command_await("ayylmao", raise_=True)
except InvalidResponseError:
    print("Raised.")  # Ok

The BotIntegrationClient is based off a regular Pyrogram Client, meaning that, in addition to the send_*_await methods, all normal Pyro methods still work:

client.send_message(client.bot_under_test, "Hello from Pyrogram")

# `send_*_await` methods automatically use the `bot_under_test` as peer:
res = client.send_message_await("Hello from TgIntegration", max_wait=2, raise_=False)
# If `raise_` is explicitly set to False, no exception is raised:
assert res.empty
# Note that when no response is expected and no validation thereof is necessary, ...
client.send_photo_await("media/photo.jpg", max_wait=0, raise_=False)
client.send_voice_await("media/voice.ogg", max_wait=0, raise_=False)
# ... it makes more sense to use the "unawaitable" methods:
client.send_photo(client.bot_under_test, "media/photo.jpg")
client.send_voice(client.bot_under_test, "media/voice.ogg")

Custom awaitable actions

The main logic for the timeout between sending a message and receiving a response from the user is handled in the act_await_response method:

def act_await_response(self, action: AwaitableAction) -> Response: ...

It expects an AwaitableAction which is a plan for a message to be sent, while the BotIntegrationClient just makes it easy and removes a lot of the boilerplate code to create these actions.

After executing the action, the client collects all incoming messages that match the filters and adds them to the response. Thus you can think of a Response object as a collection of messages returned by the peer in reaction to the executed AwaitableAction.

from tgintegration import AwaitableAction, Response
from pyrogram import Filters

peer = '@BotListBot'

action = AwaitableAction(
    func=client.send_message,
    kwargs=dict(
        chat_id=peer,
        text="**Hello World**",
        parse_mode="markdown"
    ),
    # Wait for messages only by the peer we're interacting with
    filters=Filters.user(peer) & Filters.incoming,
    # Time out and raise after 15 seconds
    max_wait=15
)

response = client.act_await_response(action)  # type: Response

Integrating with test frameworks

TODO

  • py.test
  • unittest

Credits

This package was created with Cookiecutter and the audreyr/cookiecutter-pypackage project template.

History

0.1.0 (2018-04-30)

  • First release on PyPI.

Project details


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