add functional test for feedback feature

feedback/templates/feedback.html

@@ -5,12 +5,12 @@
 <section>
     <form class="feedback-form" method="POST" action ="{% url 'send_feedbacks' %}">
         <label for="username">Username</label>
-        <input name="username" type="text" /> <br>
+        <input name="username" type="text" id="feedback_username" /> <br>
 
         <label for="text">Text</label>
-        <input name="text" type="text" /> <br>
+        <input name="text" type="text" id="feedback_text" /> <br>
 
-        <input type="submit" class="submit_btn btn label-success" value="add" />
+        <input type="submit" class="submit_btn btn label-success" value="add" id="feedback_submit"/>
         {% csrf_token %}
       </form>
 </section>

functional_tests/test_feedback.py

+from django.conf import settings
+from django.contrib.auth import BACKEND_SESSION_KEY, SESSION_KEY, get_user_model
+from django.contrib.sessions.backends.db import SessionStore
+from .base import FunctionalTest
+User = get_user_model()
+
+FEEDBACK_URI = '/feedbacks/'
+class FeedbackTest(FunctionalTest):
+
+    def test_add_feedback(self):
+        # Edith goes to the home page and accidentally tries to submit
+        # an empty list item. She hits Enter on the empty input box
+        self.browser.get(self.BASE_URL + FEEDBACK_URI)
+        self.browser.find_element_by_id('feedback_username').send_keys("ANONYMUS")
+        self.browser.find_element_by_id('feedback_text').send_keys("TEST")
+        self.browser.find_element_by_id('feedback_submit').click()
+
+        # The home page refreshes, and there is an error message saying
+        # that list items cannot be blank
+        self.wait_for(lambda: self.assertEqual(
+            self.browser.find_element_by_id('list_feedback').text,
+            "TEST"
+        ))
+
+        # # She tries again with some text for the item, which now works
+        # self.browser.find_element_by_id('id_new_item').send_keys('Buy milk')
+        # self.browser.find_element_by_id('id_new_item').send_keys(Keys.ENTER)
+        # self.wait_for_row_in_list_table('1: Buy milk')
+
+
+        # # Perversely, she now decides to submit a second blank list item
+        # self.browser.find_element_by_id('id_new_item').send_keys(Keys.ENTER)
+
+        # # She receives a similar warning on the list page
+        # self.wait_for(lambda: self.assertEqual(
+        #     self.browser.find_element_by_css_selector('.has-error').text,
+        #     "You can't have an empty list item"
+        # ))
+
+        # # And she can correct it by filling some text in
+        # self.browser.find_element_by_id('id_new_item').send_keys('Make tea')
+        # self.browser.find_element_by_id('id_new_item').send_keys(Keys.ENTER)
+        # self.wait_for_row_in_list_table('1: Buy milk')
+        # self.wait_for_row_in_list_table('2: Make tea')