ImportError: Failed to import test module (in docker).
tkl5 opened this issue · comments
Running tests works in Windows Subsystem for Linux but not in a Docker container. Is my general test layout correct? Looks like it's not able to find initdb
. In other words, is it having conflict issues with the database created in Docker-compose.yml or does it have anything to do with that?
My test file testMyProject.py
:
import unittest
import psycopg2
import testing.postgresql
from sqlalchemy import create_engine
class TestPostgresqlInteraction(unittest.TestCase):
Postgresql = testing.postgresql.PostgresqlFactory(cache_initialized_db=True)
with testing.postgresql.Postgresql() as postgresql:
engine = create_engine(postgresql.url())
dbConn = psycopg2.connect(**postgresql.dsn())
cursor = dbConn.cursor()
def setUp(self):
self.postgresql = self.Postgresql()
def tearDown(self):
self.postgresql.stop()
def testMethod(self)
conn = psycopg2.connect(**self.postgresql.dsn())
cursor = conn.cursor()
# execute cursor and do tests...
def tearDownModule(self):
self.Postgresql.clear_cache()
docker-compose.yml:
version: "3"
services:
myproject:
build:
context: .
dockerfile: ./myproject/Dockerfile
depends_on:
- database
volumes:
- ./myproject:/code
stdin_open: true
tty: true
database:
build:
context: .
dockerfile: ./database/Dockerfile
environment:
POSTGRES_USER_FILE: /secrets/dbUser.txt
POSTGRES_PASSWORD_FILE: /secrets/dbPassword.txt
ports:
- "8765:5432"
volumes:
- otherdata:/var/lib/postgresql/data
I run docker-compose exec myproject python3 -m unittest
Traceback:
ERROR: tests.testMyProject (unittest.loader._FailedTest)
----------------------------------------------------------------------
ImportError: Failed to import test module: tests.testMyProject
Traceback (most recent call last):
File "/usr/local/lib/python3.7/unittest/loader.py", line 436, in _find_test_path
module = self._get_module_from_name(name)
File "/usr/local/lib/python3.7/unittest/loader.py", line 377, in _get_module_from_name
__import__(name)
File "/code/tests/testMyproject.py", line 40, in <module>
class TestPostgresqlInteraction(unittest.TestCase):
File "/code/tests/testMyproject.py", line 46, in TestPostgresqlInteraction
Postgresql = testing.postgresql.Postgresql(copy_data_from='/database/Dockerfile')
File "/usr/local/lib/python3.7/site-packages/testing/common/database.py", line 92, in __init__
self.initialize()
File "/usr/local/lib/python3.7/site-packages/testing/postgresql.py", line 50, in initialize
self.initdb = find_program('initdb', ['bin'])
File "/usr/local/lib/python3.7/site-packages/testing/postgresql.py", line 144, in find_program
raise RuntimeError("command not found: %s" % name)
RuntimeError: command not found: initdb
It worked for me
Install postgres in the docker image:
RUN apt update && apt install -y postgresql postgresql-contrib
Create a user in the just before to run the tests
RUN useradd -u 8877 testing
USER testing
CMD pytest -s -v