urban-meal-delivery/tests/db/test_cities.py
Alexander Hess 6cb4be80f6
Add Address.x and Address.y coordinates
- the Address.x and Address.y properties use the UTMCoordinate class
  behind the scenes
- x and y are simple coordinates in an x-y plane
- the (0, 0) origin is the southwest corner of Address.city.viewport
2021-01-02 16:29:50 +01:00

74 lines
2.3 KiB
Python

"""Test the ORM's `City` model."""
# pylint:disable=no-self-use
import pytest
from tests.db.utils import test_coordinates as consts
from urban_meal_delivery import db
class TestSpecialMethods:
"""Test special methods in `City`."""
def test_create_city(self, city):
"""Test instantiation of a new `City` object."""
assert city is not None
def test_text_representation(self, city):
"""`City` has a non-literal text representation."""
result = repr(city)
assert result == f'<City({city.name})>'
@pytest.mark.db
@pytest.mark.no_cover
class TestConstraints:
"""Test the database constraints defined in `City`."""
def test_insert_into_database(self, db_session, city):
"""Insert an instance into the (empty) database."""
assert db_session.query(db.City).count() == 0
db_session.add(city)
db_session.commit()
assert db_session.query(db.City).count() == 1
class TestProperties:
"""Test properties in `City`."""
def test_location_data(self, city, city_data):
"""Test `City.location` property."""
result = city.location
assert isinstance(result, dict)
assert len(result) == 2
assert result['latitude'] == pytest.approx(city_data['_center_latitude'])
assert result['longitude'] == pytest.approx(city_data['_center_longitude'])
def test_viewport_data_overall(self, city):
"""Test `City.viewport` property."""
result = city.viewport
assert isinstance(result, dict)
assert len(result) == 2
@pytest.mark.parametrize('corner', ['northeast', 'southwest'])
def test_viewport_data_corners(self, city, city_data, corner):
"""Test `City.viewport` property."""
result = city.viewport[corner]
assert isinstance(result, dict)
assert len(result) == 2
assert result['latitude'] == pytest.approx(city_data[f'_{corner}_latitude'])
assert result['longitude'] == pytest.approx(city_data[f'_{corner}_longitude'])
def test_city_in_utm_coordinates(self, city):
"""Test `City.as_origin` property."""
result = city.as_origin
assert result.zone == consts.ZONE
assert consts.MIN_EASTING < result.easting < consts.MAX_EASTING
assert consts.MIN_NORTHING < result.northing < consts.MAX_NORTHING