7.3 Ensuring We Have a Regression Test

src/functional_tests/tests.py

@@ -72,3 +72,46 @@ class NewVisitorTest(LiveServerTestCase):
         # She visits that URL - her to-do list is still there.
 
         # Satisfied, she goes back to sleep
+
+    def test_multiple_users_can_start_lists_at_different_urls(self):
+        # Edith starts a new to-do list
+        self.browser.get(self.live_server_url)
+        inputbox = self.browser.find_element_by_id('id_new_item')
+        inputbox.send_keys('Buy peacock feathers')
+        inputbox.send_keys(Keys.ENTER)
+        self.wait_for_row_in_list_table('1: Buy peacock feathers')
+
+        # She notices that her list has a unique URL
+        edith_list_url = self.browser.current_url
+        self.assertRegex(edith_list_url, '/list/.+') # assertRegex is a helper func from unittest that checks whether a string maches a regular expression
+
+        # Now a new user, Francis, comes along to the site.
+
+        ## We use a new browser session to make sure that no information
+        ## of Edith's is coming through from cookies etc
+        self.browser.quit()
+        self.browser = webdriver.Firefox()
+
+        # Francis visits the home page. There is no sing of Edith's list
+        self.browser.get(self.live_server_url)
+        page_text = self.browser.find_element_by_tag_name('body').text
+        self.assertNotIn('Buy peacock feathers', page_text)
+        self.assertNotIn('make a fly', page_text)
+
+        # Francis starts a new list by entering a new item. He is less interesting than Edith
+        inputbox = self.browser.find_element_by_id('id_new_item')
+        inputbox.send_keys('Buy milk')
+        inputbox.send_keys(Keys.ENTER)
+        self.wait_for_row_in_list_table('1: Buy milk')
+
+        # Francis gets his own unique URL
+        francis_list_url = self.browser.current_url
+        self.assertRegex(francis_list_url, '/lists/.+')
+        self.assertNotEqual(francis_list_url, edith_list_url)
+
+        # Again, there is no trace of Edith's list
+        page_text = self.browser.find_element_by_tag_name('body').text
+        self.assertNotIn('Buy peacock feathers', page_text)
+        self.assertIn('Buy milk', page_text)
+
+        # Satisfied, they both go back to sleep