Tests: Correct expected values for draw strength

This commit places back the tests for draw strength when faced with a
unconfirmed ballot. Contrary to other metrics, the values should change
as they include the new draw. However, they should not contain the
scores from the unconfirmed ballot. This test shows that this behaviour
is current, and is expected.

tabbycat/standings/tests/test_standings.py

@@ -1,5 +1,4 @@
 import logging
-from unittest import expectedFailure
 
 from django.test import TestCase
 
@@ -253,13 +252,15 @@ def setUp(self):
         debate = self.set_up_ignorable_debate()
         debate.ballotsubmission_set.update(confirmed=False)
 
-    @expectedFailure
     def test_draw_strength(self):
-        super().test_draw_strength()
+        # The ignorable debate still counts as an opponent (because they definitely faced each
+        # other) but does not count as a win (because it's unconfirmed). So the losing team has
+        # faced the winning team 3 times (including ignorable debate), and the winning team has 2
+        # wins (excluding ignorable debate), for a losing team draw strength of 3 * 2 = 6.
+        self._base_metric_test({'draw_strength': [0, 6]})
 
-    @expectedFailure
     def test_draw_strength_speaks(self):
-        super().test_draw_strength_speaks()
+        self._base_metric_test({'draw_strength_speaks': [591, 609]})
 
 
 class TestBasicStandings(TestCase):