Pytest - no tests ran

I'm using pytest and selenium. When I try run my test script:

import pytest
from selenium import webdriver
from pages import *
from locators import *
from selenium.webdriver.common.by import By
import time

class RegisterNewInstructor:
    def setup_class(cls):
        cls.driver = webdriver.Firefox()
        cls.driver.get("http://mytest.com")

    def test_01_clickBecomeTopButtom(self):
        page = HomePage(self.driver)
        page.click_become_top_button()
        self.assertTrue(page.check_instructor_form_page_loaded())

    def teardown_class(cls):
        cls.driver.close()

The message shown is: no tests ran in 0.84 seconds

Could someone help me run this simple test?

According to the pytest test conventions, your class should start with Test to be automatically picked up by the test discovery mechanism. Call it TestRegisterNewInstructor instead.

Or, subclass the unittest.TestCase:

import unittest

class RegisterNewInstructor(unittest.TestCase):
    # ...

Also keep in mind that the .py test script itself must begin with test_ or end with _test in its filename.