setup.py

import sys
from setuptools import setup
from setuptools.command.test import test as TestCommand


class Test(TestCommand):
    user_options = [
        ('pytest-args=', 'a', "Arguments to pass into py.test")
    ]

    def initialize_options(self):
        super().initialize_options()
        self.pytest_args = ['tests/', '--timeout=2', '--cov=./myproject', '--capture=no', '--verbose', '-l', '-s', '-vv']

    def finalize_options(self):
        super().finalize_options()
        self.test_args = []
        self.test_suite = True

    def run_tests(self):
        import pytest
        sys.exit(pytest.main(self.pytest_args))

setup(cmdclass={'test': Test})