kube_proxy_url_fixture.py

@pytest.fixture(scope="session")
async def kube_proxy_url(docker_host: str) -> str:
    cmd = "kubectl proxy -p 8084 --address='0.0.0.0' --accept-hosts='.*'"
    err = f"Error while running command `{cmd}`"
    proc = subprocess.Popen(
        cmd,
        shell=True,
        stderr=subprocess.STDOUT,
        stdout=subprocess.PIPE,
        close_fds=True,
    )
    try:
        prefix = "Starting to serve on "
        line = proc.stdout.readline().decode().strip()
        if "error" in line.lower():
            raise RuntimeError(f"{err}: Found error in output: `{line}`")
        if not line.startswith(prefix):
            raise RuntimeError(f"{err}: Unexpected output: `{line}`")
        try:
            value = line[len(prefix) :]
            _, port_str = value.rsplit(":", 1)
            port = int(port_str)
        except ValueError as e:
            raise RuntimeError(f"{err}: Could not parse `{line}`: {e}")
        yield f"http://{docker_host}:{port}"

    finally:
        proc.terminate()
        proc.kill()

should be:

finally:
        proc.terminate()
        proc.wait()