Plugin does not loaded

[vitalk]

Re #7 (comment)

Looks like a pytest-flask not loaded at all:

available fixtures: pytestconfig, app, recwarn, monkeypatch, capfd, capsys, tmpdir

Can you provide a head of your pytest stack trace? The list of loaded
plugins shows at the top, for example:

$ py.test tests/
test session starts
platform darwin -- Python 2.7.8 -- py-1.4.24 -- pytest-2.6.2
plugins: flask
collected 443 items

...

/cc @bonya

[bonya]

platform linux2 -- Python 2.7.3 -- py-1.4.26 -- pytest-2.6.4 -- /usr/bin/python
plugins: xdist
collected 2 items / 2 errors

pip list | grep pytest
pytest (2.6.4)
pytest-flask (0.3.4)
pytest-xdist (1.9)

[vitalk]

pytest-flask and pytest-xdist installed on the same way?

[bonya]

yes. all packages are installed via pip.

[vitalk]

I can't reproduce your environment, can you run a simplest example (something like in #7 (comment))?

[vitalk]

platform darwin -- Python 2.7.8 -- py-1.4.26 -- pytest-2.6.4
plugins: flask, xdist
collected 1 items

test_app.py .

=== 1 passed in 0.02 seconds ===
vital@macbook .../tmp-1fdb6130449b8aa2 workon tmp-1fdb6130449b8aa2
$ pip list | grep pytest
pytest (2.6.4)
pytest-flask (0.3.4)
pytest-xdist (1.11)

[bonya]

I did following

import pytest

def create_app():
    from flask import Flask, jsonify
    app = Flask(__name__)

    @app.route('/ping')
    def ping():
        return jsonify(ping='pong')

    return app


@pytest.fixture
def app():
    app = create_app()
    app.debug = True
    return app


class TestApp:

    def test_ping(self, client):
        res = client.get(url_for('ping'))
        assert res.status_code == 200
        assert res.json == {'ping': 'pong'}


if __name__ == '__main__':
    app = create_app()
    app.run(port=5000)

the output

vagrant@talkstart:/vagrant$ py.test tests/test_xxx.py
====================================================================== test session starts ======================================================================
platform linux2 -- Python 2.7.3 -- py-1.4.26 -- pytest-2.6.4
plugins: xdist
collected 1 items

tests/test_xxx.py E

============================================================================ ERRORS =============================================================================
______________________________________________________________ ERROR at setup of TestApp.test_ping ______________________________________________________________
file /vagrant/tests/test_xxx.py, line 25
      def test_ping(self, client):
        fixture 'client' not found
        available fixtures: pytestconfig, app, recwarn, monkeypatch, capfd, capsys, tmpdir
        use 'py.test --fixtures [testpath]' for help on them.

pytest plugin is not loaded.

[bonya]

So, i upgraded my vagrant box to ubuntu 14.04 and python 2.7.6 and it works.

Probably older python 2.7.3 was causing the issue.

Thanks for the fast replies!

[vitalk]

👍 happy testing.

[evadeflow]

Here's a possibly relevant anecdote: I was getting exactly the fixture 'client' not found error described in this issue, even though pytest-flask was already installed. On a random hunch, I ran pip install ipython and—after doing that—the pytest-flask plugin loaded fine. Not that I'm suggesting that installing ipython is a proper 'fix' for this. But perhaps it provides a clue as to the root cause.

[vitalk]

Thanks @evadeflow for a note. But this looks a little bit strange for me. Do you update your python/pytest environment at first, as mentioned before?

[kabapy]

add the required fixture

@pytest.fixture
def client():
    app = create_app()
    client = app.test_client()
    return client

[senaps]

@kabapy if i do so, then i'll get an error telling me url_for needs to be ran with a context-manager.

i have the same issue of not being able to find client fixture.

[senaps]

i was able to pass the test's by removing pytest, pytest-flask and installing them again.

https://stackoverflow.com/a/47786621/937453

[kabapy]

I avoid flask-pytest and use pytest directly