measuring coverage with multiprocessing.process · Issue #1307 · nedbat/coveragepy (original) (raw)

Describe the bug
I have a "regular" unittest script, in which I am creating an "echo server" using multitprocessing.process. To start the server I do the following:

def tcp_server(host, port): with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s: s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) s.bind((host, port)) s.listen() while True: conn, addr = s.accept() with conn: while data := conn.recv(1024): conn.sendall(data)

class TestEcho(TestCase):

def setUp(self) -> None:
    self.server = multiprocessing.Process(target=tcp_server, args=('127.0.0.1', 1235))
    self.server.start()

def tearDown(self) -> None:
    self.server.terminate()

    while self.server.is_alive()
        sleep(0.1)

def test1(self):
   .....

my .coveragerc looks like this:

[run] parallel = True concurrency = multiprocessing

[report] omit = tests/**/init.py

To run my tests, I use the following script:

export COVERAGE_PROCESS_START=.coveragerc coverage run -m unittest discover -s ./tests coverage combine coverage report -m

and when getting the report... there are files that I am sure have been executed (as the tests are successful) but they get reported as missing.

To Reproduce
How can we reproduce the problem? Please be specific. Don't link to a failing CI job. Answer the questions below:

1. What version of Python are you using? 3.10.1
2. What version of coverage.py shows the problem? 6.2
3. What versions of what packages do you have installed?

asgiref==3.4.1 blinker==1.4 Brotli==1.0.9 certifi==2021.10.8 cffi==1.15.0 charset-normalizer==2.0.9 click==8.0.3 colorama==0.4.4 container-app-conf==5.2.2 coverage==6.2 cryptography==3.4.8 cycler==0.11.0 ffmpeg-normalize==1.22.4 ffmpeg-progress-yield==0.2.0 Flask==2.0.2 Flask-SQLAlchemy==2.5.1 fonttools==4.28.5 forex-python==1.8 greenlet==1.1.2 h11==0.12.0 h2==4.1.0 hpack==4.0.0 hyperframe==6.0.1 idna==3.3 itsdangerous==2.0.1 Jinja2==3.0.3 kaitaistruct==0.9 kiwisolver==1.3.2 ldap3==2.9.1 MarkupSafe==2.0.1 matplotlib==3.5.1 mitmproxy==7.0.4 msgpack==1.0.3 numpy==1.21.5 packaging==21.3 pandas==1.3.5 passlib==1.7.4 pdftotext==2.2.2 Pillow==8.4.0 pip-date==1.0.3 protobuf==3.18.1 publicsuffix2==2.20191221 py-range-parse==1.0.5 pyasn1==0.4.8 pycparser==2.21 pycryptodome==3.12.0 pyOpenSSL==20.0.1 pyparsing==2.4.7 pyperclip==1.8.2 pyserial==3.5 python-dateutil==2.8.2 python-dotenv==0.19.2 pytimeparse==1.1.8 pytz==2021.3 PyYAML==6.0 requests==2.26.0 ruamel.yaml==0.17.16 ruamel.yaml.clib==0.2.6 scipy==1.7.3 simplejson==3.17.6 six==1.16.0 sortedcontainers==2.4.0 SQLAlchemy==1.4.29 tenacity==8.0.1 toml==0.10.2 tornado==6.1 tqdm==4.62.3 urllib3==1.26.7 urwid==2.1.2 voluptuous==0.12.2 Werkzeug==2.0.2 wsproto==1.0.0 XlsxWriter==3.0.2 youtube-dl==2021.12.17 zstandard==0.15.2

Additional context
Add any other context about the problem here.