Pytest and forking

---

• This tests passes and generates two reports.
• I could not find a way yet to avoid the reporting in the child-process. Maybe we need to run this with a special runner that will fork and run this test on our behalf.

examples/pytest/fork/app.py

import os

def func(x, y):
    pid = os.fork()
    if pid == 0:
        print(f"Child {os.getpid()}")
        #raise Exception("hello")
        exit()
    print(f"Parent {os.getpid()} The child is {pid}")
    os.wait()
    #exit()
    #raise Exception("hello")
    return x+y
  

if __name__ == '__main__':
    func(2, 3)

examples/pytest/fork/test_app.py

import app
import os

#def test_func():
#   assert app.func(2, 3) == 5


def test_func():
    pid = os.getpid()
    try:
        res = app.func(2, 3)
        assert res == 5
    except SystemExit as ex:
        assert str(ex) == 'None'
        #SystemExit(None)
        # or ex == 0
        if pid == os.getpid():
            raise ex

examples/pytest/cases/test_one.py

import logging

def add(x, y):
#    logger = logging.getLogger("mytest")
    logging.basicConfig(level = logging.INFO)
    logging.info("Just some info log")
    return x * y

def test_one():
    assert add(2, 2) == 4