test_webcalc.py

import pytest
from expecter import expect

from webcalc import app, mongo


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


@pytest.fixture
def pattern():
    with app.app_context():
        mongo.db.operations.drop()
        mongo.db.operations.insert(
            dict(
                name="x",
                pattern="{{ a * b }}"
            )
        )


def describe_index():

    def it_says_hello(client):
        response = client.get('/')

        expect(response.data).contains(b"Bell's Hopslam")


def describe_calc():

        def when_plus(client):
            response = client.get('/4/+/5')

            expect(response.data).contains(b"9")

        def when_plus_with_floats(client):
            response = client.get('/4.6/+/5.0')

            expect(response.data).contains(b"9.6")

        def from_db(client, pattern):
            response = client.get('/4/x/5')

            expect(response.data) == b'<img src="https://memegen.link/iw/_/20.jpg">'