Verify and explain defender-only PvP redraws

tests/test_game.py

@@ -2835,3 +2835,23 @@ def test_personal_objective_api_requires_vote(session):
         assert rat.completed_personal_1
     finally:
         app.dependency_overrides.clear()
+
+
+@pytest.mark.parametrize('defense, success, redraw', [
+    ('9S', True, True), ('2S', False, True),
+    ('9H', True, False), ('2H', False, False), ('QS', True, True),
+])
+def test_pvp_redraw_depends_on_color_not_success(session, defense, success, redraw):
+    game, deep, (attacker, defender) = make_scene_game(session, num_pirats=2)
+    attacker.hand_cards = '["7C"]'
+    defender.hand_cards = json.dumps([defense])
+    game.deck_cards = '["AD"]'
+    session.commit()
+    assert crud.create_pvp_challenge(session, game.id, attacker.id, defender.id, '7C')[0]
+    duel = game.challenges[0]
+    ok, _, result = crud.play_pvp_defense(session, duel.id, defender.id, defense)
+    assert ok and result['success'] == success
+    assert result['drew_card'] == ('AD' if redraw else None)
+    assert crud.get_player_hand(attacker) == []
+    assert crud.get_player_hand(defender) == (['AD'] if redraw else [])
+    assert not crud.play_pvp_defense(session, duel.id, defender.id, 'AD')[0]