diff --git a/tests/test_deck.py b/tests/test_deck.py
index 56fbbdd..01f4c7c 100644
--- a/tests/test_deck.py
+++ b/tests/test_deck.py
@@ -13,11 +13,26 @@ def test_deck_init(default_deck):
     assert len(default_deck.cards) == 52
 
 
-def test_shuffle_deck(default_deck):
-    """Tests if the deck is randomized after method call"""
-    assert default_deck != default_deck.shuffle()
+def test_deck_shuffle_order_changes(default_deck):
+    """Tests if the order of the cards have been changed."""
+    # saves a list of cards before shufflening
+    ordered_cards = list(default_deck.cards)
+    #shuffle cards
+    default_deck.shuffle()
 
+    assert default_deck.cards != ordered_cards
 
+def test_deck_shuffle_content_is_preserved(default_deck):
+    # 1. Capture the unique cards of the original list (as a set)
+    original_card_set = set(str(card) for card in default_deck.cards)
+    # 2. Shuffle the deck
+    default_deck.shuffle()
+    # 3. Check if the number of cards is still 52
+    assert len(default_deck.cards) == 52
+    # 4. Check if the card contents are still identical (all 52 unique cards must be present)
+    shuffled_card_set = set(str(card) for card in default_deck.cards)
+    assert shuffled_card_set == original_card_set
+  
 def test_card_dealing(default_deck):
     """Tests if the a card is correctly removed from the deck."""
     default_deck.shuffle()
diff --git a/tests/test_hand.py b/tests/test_hand.py
new file mode 100644
index 0000000..50381df
--- /dev/null
+++ b/tests/test_hand.py
@@ -0,0 +1,12 @@
+import pytest
+
+from pyjack.hand import Hand
+
+@pytest.fixture
+def default_hand():
+    my_hand = Hand()
+    return my_hand
+
+
+def test_adding_card_to_hand(default_hand):
+    default_hand.add_card("diamonds","2")