diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
new file mode 100644
index 0000000..5e9923c
--- /dev/null
+++ b/.github/workflows/pytest.yml
@@ -0,0 +1,30 @@
+name: Python tests
+
+on:
+  push:
+    branches: ["*"]
+  pull_request:
+    branches: ["*"]
+
+jobs:
+  test:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.10'  # или нужная версия
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install pytest
+        # pip install -r requirements.txt  # если есть зависимости
+
+    - name: Run tests
+      run: |
+        pytest -v
diff --git a/pytest.ini b/pytest.ini
new file mode 100644
index 0000000..fcccae1
--- /dev/null
+++ b/pytest.ini
@@ -0,0 +1,2 @@
+[pytest]
+pythonpath = src
diff --git a/src/testing_pytest_base/heap_sort/heap_sort.py b/src/testing_pytest_base/heap_sort/heap_sort.py
new file mode 100644
index 0000000..58140e0
--- /dev/null
+++ b/src/testing_pytest_base/heap_sort/heap_sort.py
@@ -0,0 +1,31 @@
+def _heapify(lst, index):
+    while index > 0:
+        if lst[index] > lst[(index - 1) // 2]:
+            temp = lst[index]
+            lst[index] = lst[(index - 1) // 2]
+            lst[(index - 1) // 2] = temp
+        else:
+            break
+        index = (index - 1) // 2
+
+
+def _list_to_heap(lst, unsorted_size):
+    for i in range(unsorted_size):
+        if lst[i] > lst[(i - 1) // 2]:
+            _heapify(lst, i)
+
+
+def heap_sort(lst):
+    """Standart heap sorting algorithm. Takes list and sorts it."""
+    size = len(lst)
+    for i in range(size):
+        _list_to_heap(lst, size - i)
+        temp = lst[0]
+        lst[0] = lst[size - i - 1]
+        lst[size - i - 1] = temp
+
+
+if __name__ == "__main__":
+    lst = list(map(int, input("Input list: ").split()))
+    heap_sort(lst)
+    print(lst)
diff --git a/tests/heap_sort_test.py b/tests/heap_sort_test.py
new file mode 100644
index 0000000..e4ba69f
--- /dev/null
+++ b/tests/heap_sort_test.py
@@ -0,0 +1,21 @@
+from testing_pytest_base.heap_sort.heap_sort import heap_sort
+import random
+
+
+def test_common():
+    lst = [3, 1, 2]
+    heap_sort(lst)
+    assert lst == [1, 2, 3]
+
+
+def test_empty():
+    lst = []
+    heap_sort(lst)
+    assert lst == []
+
+
+def test_another_sort():
+    lst = [random.randint(-1000000, 1000000) for _ in range(10000)]
+    sorted_with_another = sorted(lst)
+    heap_sort(lst)
+    assert lst == sorted_with_another