PyCharm 2019.5.2 cannot run test

Hello, I try to run Unittest, but I don't understand what happened:

My code:

import unittest
from selenium import webdriver

class Setup(unittest.TestCase):
   def setUp(self):
      self.driver = webdriver.Chrome(executable_path = r'C:...')
      self.driver.get('.....')

def test_valid_login(self):
   driver = self.driver
   driver.find_element_by_id('....').send_keys(.....')
   driver.find_element_by_id('.....').send_keys('.....')
   welcome_text = driver.find_element_by_id('welcome.').text

   self.assertEqual('Welcome Admin', welcome_text)

if __name__ == '__main__':
   unittest.main()

Ran 0 tests in 0.000s

OK

Process finished with exit code 0

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But it work on 2018 version.