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import time
import uuid
import docker as docker_client
import psycopg2
import pytest
from docker.errors import APIError, ImageNotFound
def pytest_addoption(parser):
parser.addoption('--pg-image', action='store', default='postgres:latest',
help='Specify postgresql image name')
parser.addoption('--pg-name', action='store', default=None,
help='Specify database container name to use.')
parser.addoption('--pg-reuse', action='store_true',
help='Save database container at the end')
parser.addoption('--pg-network', action='store', default=None,
help='Specify docker network for the PostgreSQL container')
parser.addoption('--pg-host', action='store', default=None,
help='Specify PostgreSQL server host')
parser.addoption('--pg-port', action='store', default=5432,
help='Specify PostgreSQL server port')
parser.addoption('--pg-user', action='store', default='postgres',
help='Specify PostgreSQL server user name')
parser.addoption('--pg-password', action='store', default='postgres',
help='Specify PostgreSQL server user password')
parser.addoption('--pg-database', action='store', default='postgres',
help='Specify test database name')
@pytest.fixture(scope='session')
def docker():
return docker_client.from_env()
def check_connection(params):
delay = 0.01
38 ↛ 48line 38 didn't jump to line 48, because the loop on line 38 didn't complete for _ in range(20):
try:
with psycopg2.connect(**params) as conn:
with conn.cursor() as cursor:
cursor.execute('SELECT version();')
break
except psycopg2.Error:
time.sleep(delay)
delay *= 2
else:
pytest.fail('Could not connect to PostgreSQL server')
def create_container(docker, image, name, ports, network=None):
container = None
54 ↛ 60line 54 didn't jump to line 60, because the condition on line 54 was never false if name:
for item in docker.containers.list(all=True):
56 ↛ 57line 56 didn't jump to line 57, because the condition on line 56 was never true if name in item.name:
container = item
break
60 ↛ 78line 60 didn't jump to line 78, because the condition on line 60 was never false if not container:
try:
docker.images.pull(image)
except APIError:
pass
container_params = {'image': image, 'name': name, 'detach': True}
68 ↛ 69line 68 didn't jump to line 69, because the condition on line 68 was never true if network:
container_params['network'] = network
else:
container_params['ports'] = ports
try:
container = docker.containers.create(**container_params)
except ImageNotFound:
pytest.fail('Image `{0}` not found'.format(image))
return container
@pytest.yield_fixture(scope='session')
def pg_server(docker, request):
pg_host = request.config.getoption('--pg-host')
pg_port = request.config.getoption('--pg-port')
pg_user = request.config.getoption('--pg-user')
pg_password = request.config.getoption('--pg-password')
pg_database = request.config.getoption('--pg-database')
pg_name = request.config.getoption('--pg-name')
pg_image = request.config.getoption('--pg-image')
pg_reuse = request.config.getoption('--pg-reuse')
pg_network = request.config.getoption('--pg-network')
network = None
container = None
97 ↛ 117line 97 didn't jump to line 117 if not pg_host:
98 ↛ 101line 98 didn't jump to line 101, because the condition on line 98 was never false if not pg_name:
pg_name = 'db-{}'.format(str(uuid.uuid4()))
container = create_container(docker, pg_image, pg_name,
ports={'5432/tcp': None},
network=pg_network)
container.start()
container.reload()
network = container.attrs['NetworkSettings']
109 ↛ 110line 109 didn't jump to line 110, because the condition on line 109 was never true if pg_network:
net = container.attrs['NetworkSettings']['Networks'][pg_network]
pg_host = net['IPAddress']
else:
ports = container.attrs['NetworkSettings']['Ports']
pg_host = 'localhost'
pg_port = ports['5432/tcp'][0]['HostPort']
pg_params = {
'host': pg_host,
'port': pg_port,
'database': pg_database,
'user': pg_user,
'password': pg_password
}
try:
check_connection(pg_params)
yield {
'network': network,
'params': pg_params
}
finally:
132 ↛ exitline 132 didn't return from function 'pg_server', because the condition on line 132 was never false if not pg_reuse and container:
container.kill()
container.remove()
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