Correct way of writing Selenium Unittests in Python?

Question

I have the following scenario:

Load Page A
Check if Element_A exists in Page A
Click Button_A
On Clicking Button_A, Page B is loaded
Check if Element_B exists in Page B and Click Button_B
and so on...

I have written my code like this:

import unittest
from selenium import webdriver
from selenium.webdriver.common.keys import Keys

class MyWebsiteTest(unittest.TestCase):

    def setUp(self):
        self.driver = webdriver.Firefox()

    def test_element_a_in_page_a(self):
        driver = self.driver
        driver.get(PAGE_A)
        element = driver.get_element_by_id("element_a")
        self.assertIsNotNone(element,"Oops.")

    def load_page_b_if_previous_function_is_true(self):
        #WHAT DO I DO HERE?
        #I Need to run this function given test_element_a_in_page_a succeeds.

    def tearDown(self):
        self.driver.close()

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

How do I do this? How do I write load_page_b_if_element_a_in_page_a?

If I write the entire flow of tests in ONE function, then I can achieve it easily, but how do I do seperation of concerns? How do I divide the tasks into different functions without making firefox open multiple times?

Nicolas Cortot · Accepted Answer · 2013-12-26 12:30:36Z

6

Unit tests are independent from each other by design. The ordering can be changed, but they shouldn't depend on each other's results.

In your case, you need to put load_page_b_if_previous_function_is_true inside test_element_a_in_page_a.

In general, you will need to write a single test function for each Selenium scenario. You cannot split actions which depend on each other into several test cases.

answered Dec 26, 2013 at 12:30

Nicolas Cortot

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