Testing technique

[Станислав Соколко]

Hello!

I would like to learn the best practise of testing pulsar applications. For example, I have a class like this:

class Web(wsgi.LazyWsgi):

    def setup(self, environ):

        return wsgi.WsgiHandler([

            wsgi.Router('/', get=self.test_page),

        ])

    async def test_page(self, request):

        # do something

And I want to test test_page method. So, I would like to run some kind of fake-http-server, make fake-http requests to it. How can it be acheived?

I've tried using test_wsgi_environ and WsgiRequest, but it doesn't always work. So, it seems to be a not-so-elegant solution.

Maybe some approach, similar to this https://github.com/quantmind/pulsar/blob/master/tests/http/base.py can be used? But it requires examples, which don't seem to be included in the installed package...

So, any your advice will be extremely helpful

[lsbardel]

You have two options for testing:

client-server

Create the server in the setUpClass class method, the link you provided does give you an example (quite complex). Check https://github.com/quantmind/pulsar/blob/master/examples/calculator/tests.py for a simpler setup.

Once you have the server with a valid address you can use the HttpClient directly.

Your tearDownClass method should cleanup by removing the server. The above link show you how to do it.

dummy client-server

This is available in the master branch only. Not yet released.

In this setup, there are no sockets involved, the transport layer is replaced by dummy classes.

Create a HttpTestClient:

from pulsar.apps.test import HttpTestClient

async def test_my_test(self):
   http = HttpTestClient(self, wsgi_handler)
   response = await http.get('http://fake.com/..')

where wsgi_handler is your asynchronous wsgi handler.

This option is under development, feedback welcome.