diff --git a/tests/y_2024/test_2024_day10.py b/tests/y_2024/test_2024_day10.py
new file mode 100644
index 0000000..63a9ee0
--- /dev/null
+++ b/tests/y_2024/test_2024_day10.py
@@ -0,0 +1,39 @@
+# from __future__ import annotations
+
+from unittest.mock import mock_open, patch
+
+from y_2024.day10 import Day
+
+with patch(
+    "builtins.open",
+    mock_open(
+        read_data="""............
+........0...
+.....0......
+.......0....
+....0.......
+......A.....
+............
+............
+........A...
+.........A..
+............
+............
+""",  # noqa: E501
+    ),
+):
+    day = Day()
+
+
+def test__preprocess_input():
+    assert True
+
+
+def test_calculate_1():
+    r = day._calculate_1()
+    assert r == 14
+
+
+def test_calculate_2():
+    r = day._calculate_2()
+    assert r == 34
diff --git a/tests/y_2024/test_2024_day11.py b/tests/y_2024/test_2024_day11.py
new file mode 100644
index 0000000..ed18184
--- /dev/null
+++ b/tests/y_2024/test_2024_day11.py
@@ -0,0 +1,39 @@
+# from __future__ import annotations
+
+from unittest.mock import mock_open, patch
+
+from y_2024.day11 import Day
+
+with patch(
+    "builtins.open",
+    mock_open(
+        read_data="""............
+........0...
+.....0......
+.......0....
+....0.......
+......A.....
+............
+............
+........A...
+.........A..
+............
+............
+""",  # noqa: E501
+    ),
+):
+    day = Day()
+
+
+def test__preprocess_input():
+    assert True
+
+
+def test_calculate_1():
+    r = day._calculate_1()
+    assert r == 14
+
+
+def test_calculate_2():
+    r = day._calculate_2()
+    assert r == 34
diff --git a/tests/y_2024/test_2024_day12.py b/tests/y_2024/test_2024_day12.py
new file mode 100644
index 0000000..5c63e49
--- /dev/null
+++ b/tests/y_2024/test_2024_day12.py
@@ -0,0 +1,39 @@
+# from __future__ import annotations
+
+from unittest.mock import mock_open, patch
+
+from y_2024.day12 import Day
+
+with patch(
+    "builtins.open",
+    mock_open(
+        read_data="""............
+........0...
+.....0......
+.......0....
+....0.......
+......A.....
+............
+............
+........A...
+.........A..
+............
+............
+""",  # noqa: E501
+    ),
+):
+    day = Day()
+
+
+def test__preprocess_input():
+    assert True
+
+
+def test_calculate_1():
+    r = day._calculate_1()
+    assert r == 14
+
+
+def test_calculate_2():
+    r = day._calculate_2()
+    assert r == 34
diff --git a/tests/y_2024/test_2024_day9.py b/tests/y_2024/test_2024_day9.py
new file mode 100644
index 0000000..ee29026
--- /dev/null
+++ b/tests/y_2024/test_2024_day9.py
@@ -0,0 +1,27 @@
+# from __future__ import annotations
+
+from unittest.mock import mock_open, patch
+
+from y_2024.day9 import Day
+
+with patch(
+    "builtins.open",
+    mock_open(
+        read_data="""2333133121414131402""",  # noqa: E501
+    ),
+):
+    day = Day()
+
+
+def test__preprocess_input():
+    assert True
+
+
+def test_calculate_1():
+    r = day._calculate_1()
+    assert r == 1928
+
+
+def test_calculate_2():
+    r = day._calculate_2()
+    assert r == 2858
diff --git a/y_2024/day9.py b/y_2024/day9.py
index 7d1d614..df36f2e 100644
--- a/y_2024/day9.py
+++ b/y_2024/day9.py
@@ -35,26 +35,15 @@ def _preprocess_input(self):
 
     def _calculate_1(self):
         result = 0
-        return 0
         r = []
         for c, x in enumerate(self.__input_data[0].original):
-            # print(f"{c//2=},{c%2=},{c=}{x=}")
             m = c // 2 if c % 2 == 0 else "."
-            # print(f"{m=}, {x=}")
+
             for i in range(int(x)):
                 r.append(Elem(str(m)))
-            # r.append(v)
-            # print(f"{v=}")
-            ...
-        # print(r)
-        # string = list(''.join(r))
-        print("here")
-        len_file = len([i for i in r if i.x != "."])
-        # print(f"{string=}, {len_file=}")
-        print(f"{len_file=}")
-        print(f"here, {len_file=}")
+
         c = 0
-        # d=0
+
         for i in range(len(r) - 1):
             x = r[len(r) - 1 - i].x
             try:
@@ -75,22 +64,11 @@ def _calculate_2(self):
         result = 0
         r = []
         for c, x in enumerate(self.__input_data[0].original):
-            # print(f"{c//2=},{c%2=},{c=}{x=}")
             m = c // 2 if c % 2 == 0 else "."
-            # print(f"{m=}, {x=}")
+
             for i in range(int(x)):
                 r.append(Elem(str(m)))
-            # r.append(v)
-            # print(f"{v=}")
-            ...
-        # print(r)
-        # string = list(''.join(r))
-        print("here")
-        len_file = len([i for i in r if i.x != "."])
-        # print(f"{string=}, {len_file=}")
-        print(f"{len_file=}")
-        print(f"here, {len_file=}")
-        # chunks
+
         chunks = []
         chunks2 = []
         c = []
@@ -99,13 +77,10 @@ def _calculate_2(self):
         c.append(x)
         c2.append(len(r) - 1)
         for i in range(1, len(r)):
-            # print(i)
             if r[-1 - i].x == x.x:
-                # print(r[-1-i].x,x.x)
                 c.append(r[len(r) - 1 - i])
                 c2.append(len(r) - 1 - i)
             else:
-                # print(r[-1-i].x,x.x)
                 if c[0].x != ".":
                     chunks.append(c)
                     chunks2.append(c2[::-1])
@@ -114,13 +89,7 @@ def _calculate_2(self):
                 x = r[-1 - i]
                 c.append(x)
                 c2.append(len(r) - 1 - i)
-        # print(chunks)
-
-        # for c,i in enumerate(chunks):
-        #     print(i,chunks2[c])
-        # print('now')
 
-        # free slots
         slots = []
         slo = deque()
         for i in range(len(r)):
@@ -130,40 +99,25 @@ def _calculate_2(self):
                 if len(slo) > 0:
                     slots.append(slo)
                 slo = deque()
-        # for i in slots:
-        # print(i)
-        # return
+
         c = 0
-        # d=0
-        print(len(r), r[-60:])
-        print("tada\n\n\n")
+
         for c, i in enumerate(chunks):
-            #     # x = chunks[len(chunks)-1-i]
-            # print(i, len(i))
             for j in range(len(slots)):
-                # print(j,len(j))
-
                 if len(i) <= len(slots[j]):
                     if slots[j][0] > chunks2[c][0]:
                         break
-                    # print("swap")
-                    # print(chunks2[c])
 
                     for m in chunks2[c]:
-                        # print(m)
                         r[m] = Elem("#")
                         n = slots[j].popleft()
-                        # print(r[n],i[0], len(i))
-                        # if r[n].x!='.':
-                        #     breakpoint()
+
                         r[n] = i[0]
                     break
-        print(len(r), r[-60:])
-        print("".join([i.x for i in r]))
+
         result = 0
         for c, i in enumerate(r):
-            # print(i)
             if i.x not in ["#", "."]:
                 result += c * int(i.x)
-        # 8504654861152 too high
+
         return result