Move if statement in test to assert.

This works in a normal assertion. I haven't run it, possibly something
breaks in a test?

Author: drvinceknight

tests/test_player.py

@@ -30,6 +30,4 @@ def test_original_strategy(
         action = player.original_strategy(
             their_last_move, move_number, my_score, their_score, 0,
             my_last_move)
-        if action not in (0, 1):
-            print(f'{strategy} returned {action}')
-        assert action in (0, 1)
+        assert action in (0, 1), print(f'{strategy} returned {action}')