added Hand() tests

tests/test_hand.py

@@ -1,7 +1,9 @@
 import pytest
 
+from pyjack.card import Card
 from pyjack.hand import Hand
 
+
 @pytest.fixture
 def default_hand():
     my_hand = Hand()
@@ -9,5 +11,35 @@ def default_hand():
 
 
 def test_adding_card_to_hand(default_hand):
-    default_hand.add_card("diamonds","2")
-    default_hand.add_card("diamonds","K")
+    default_hand.add_card(Card("diamonds", "2"))
+    default_hand.add_card(Card("spades", "A"))
+
+    assert default_hand.value == 13
+    assert len(default_hand.cards) == 2
+
+
+def test_adjusting_for_ace(default_hand):
+    """Tests if the value of an ace is adjusted if the hand holds 1 ace
+    and two cards, making the value of the hand > 21"""
+
+    # Creating a hand with a value pre adjustment of 31
+    cards = [Card("spades", "10"), Card("diamonds", "K"), Card("heart", "A")]
+    for card in cards:
+        default_hand.add_card(card)
+
+    default_hand.adjust_for_aces()
+
+    assert default_hand.value == 21
+
+
+def testing_adjusting_for_multiple_aces(default_hand):
+    """ "Testing if multiple aces a treated correctly, resulting in the
+    hands value to be 12."""
+    # Creating a hand with a value pre adjustment of 32
+    cards = [Card("spades", "10"), Card("diamonds", "A"), Card("heart", "A")]
+    for card in cards:
+        default_hand.add_card(card)
+
+    default_hand.adjust_for_aces()
+
+    assert default_hand.value == 12