Don't delete misplaced items on final attempt

.travis.yml

@@ -9,7 +9,7 @@ install:
     - "sh install_test_deps.sh"
     - "pip uninstall -y xblock-drag-and-drop-v2"
     - "python setup.py sdist"
-    - "pip install dist/xblock-drag-and-drop-v2-2.0.10.tar.gz"
+    - "pip install dist/xblock-drag-and-drop-v2-2.0.11.tar.gz"
 script:
     - pep8 drag_and_drop_v2 tests --max-line-length=120
     - pylint drag_and_drop_v2

Changelog.md

@@ -1,3 +1,8 @@
+Version 2.0.11 (2016-10-03)
+---------------------------
+
+* ([#106](https://github.com/edx-solutions/xblock-drag-and-drop-v2/pull/106)) Don't delete misplaced items on final attempt
+
 Version 2.0.10 (2016-09-22)
 ---------------------------
 

drag_and_drop_v2/drag_and_drop_v2.py

@@ -403,7 +403,9 @@ def do_attempt(self, data, suffix=''):
 
         misplaced_items = []
         for item_id in misplaced_ids:
-            del self.item_state[item_id]
+            # Don't delete misplaced item states on the final attempt.
+            if self.attempts_remain:
+                del self.item_state[item_id]
             misplaced_items.append(self._get_item_definition(int(item_id)))
 
         feedback_msgs = [FeedbackMessage(item['feedback']['incorrect'], None) for item in misplaced_items]

setup.py

@@ -23,7 +23,7 @@ def package_data(pkg, root_list):
 
 setup(
     name='xblock-drag-and-drop-v2',
-    version='2.0.10',
+    version='2.0.11',
     description='XBlock - Drag-and-Drop v2',
     packages=['drag_and_drop_v2'],
     install_requires=[

tests/integration/test_interaction_assessment.py

@@ -139,6 +139,36 @@ def test_misplaced_items_returned_to_bank(self):
         for item_id in misplaced_items:
             self.assert_reverted_item(item_id)
 
+    def test_misplaced_items_not_returned_to_bank_on_final_attempt(self):
+        """
+        Test items placed on incorrect zones are not returned to item bank
+        after submitting solution on the final attempt, and remain placed after
+        subsequently refreshing the page.
+        """
+        self.place_item(0, TOP_ZONE_ID, action_key=Keys.RETURN)
+
+        # Reach final attempt
+        for _ in xrange(self.MAX_ATTEMPTS-1):
+            self.click_submit()
+
+        # Place incorrect item on final attempt
+        self.place_item(1, TOP_ZONE_ID, action_key=Keys.RETURN)
+        self.click_submit()
+
+        # Incorrect item remains placed
+        def _assert_placed(item_id, zone_title):
+            item = self._get_placed_item_by_value(item_id)
+            item_description = item.find_element_by_css_selector('.sr')
+            self.assertEqual(item_description.text, 'Placed in: {}'.format(zone_title))
+
+        _assert_placed(1, TOP_ZONE_TITLE)
+
+        # Refresh the page
+        self._page = self.go_to_page(self.PAGE_TITLE)
+
+        # Incorrect item remains placed after refresh
+        _assert_placed(1, TOP_ZONE_TITLE)
+
     def test_max_attempts_reached_submit_and_reset_disabled(self):
         """
         Test "Submit" and "Reset" buttons are disabled when no more attempts remaining

tests/unit/test_advanced.py

@@ -404,6 +404,21 @@ def test_do_attempt_shows_final_feedback_at_last_attempt(self):
         expected_message = self._make_feedback_message(self.FINAL_FEEDBACK)
         self.assertIn(expected_message, res[self.OVERALL_FEEDBACK_KEY])
 
+    def test_do_attempt_does_not_delete_misplaced_items_at_last_attempt(self):
+        """
+        Upon submitting the final attempt, test that misplaced items are not
+        deleted from the item state.
+        """
+        self._set_final_attempt()
+        misplaced_ids = self._submit_incorrect_solution()
+
+        self.call_handler(self.DO_ATTEMPT_HANDLER, data={})
+
+        self.assertFalse(self.block.attempts_remain)  # precondition check
+
+        for i in misplaced_ids:
+            self.assertIn(str(i), self.block.item_state.keys())
+
     def test_get_user_state_does_not_include_correctness(self):
         self._submit_complete_solution()
         original_item_state = self.block.item_state