diff --git a/.gitignore b/.gitignore
index 247236f..27cc7f2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -65,6 +65,5 @@ target/
 *.jsl
 *.db
 tmp*
-test_*
 .env*
 venv*
diff --git a/README.md b/README.md
index ec2c1c7..e886902 100644
--- a/README.md
+++ b/README.md
@@ -53,3 +53,8 @@ docker-compose up
 ```bash
 docker-compose exec web python manage.py makemigrations backend
 ```
+
+Для запуска тестов использовать
+```bash
+docker-compose run -e DJANGO_SETTINGS_MODULE=backend.settings web pytest --cov=backend
+```
diff --git a/backend/.coveragerc b/backend/.coveragerc
new file mode 100644
index 0000000..455c6de
--- /dev/null
+++ b/backend/.coveragerc
@@ -0,0 +1,3 @@
+[run]
+omit =
+  backend/migrations/*
diff --git a/backend/backend/settings.py b/backend/backend/settings.py
index 32b39d6..e00523f 100644
--- a/backend/backend/settings.py
+++ b/backend/backend/settings.py
@@ -28,7 +28,7 @@ DEBUG = True
 
 ALLOWED_HOSTS = []
 if DEBUG:
-    ALLOWED_HOSTS = ["0.0.0.0", "localhost", "127.0.0.1"]
+    ALLOWED_HOSTS = ["0.0.0.0", "localhost", "127.0.0.1", "ALLOWED_HOSTS", "testserver"]
 
 # Application definition
 
diff --git a/backend/backend/urls.py b/backend/backend/urls.py
index d123db5..cdcbc7f 100644
--- a/backend/backend/urls.py
+++ b/backend/backend/urls.py
@@ -13,13 +13,13 @@ from drf_yasg import openapi
 from .api import router
 
 schema_view = get_schema_view(
-   openapi.Info(
-      title="ToDo List",
-      default_version='v1',
-      description="Swagger Interface for ToDo List",
-   ),
-   public=True,
-   permission_classes=(permissions.AllowAny,),
+    openapi.Info(
+        title="ToDo List",
+        default_version="v1",
+        description="Swagger Interface for ToDo List",
+    ),
+    public=True,
+    permission_classes=(permissions.AllowAny,),
 )
 
 urlpatterns = [
@@ -28,5 +28,5 @@ urlpatterns = [
     path("api/token/refresh/", TokenRefreshView.as_view(), name="token_refresh"),
     path("api/", include(router.urls)),
     path("api-auth/", include("rest_framework.urls", namespace="rest_framework")),
-    path('swagger/', schema_view.with_ui('swagger', cache_timeout=0), name='schema-swagger-ui'),
+    path("swagger/", schema_view.with_ui("swagger", cache_timeout=0), name="schema-swagger-ui"),
 ]
diff --git a/backend/requirements.txt b/backend/requirements.txt
index 2c9488b..7385760 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -1,3 +1,5 @@
+pytest==6.2.3
+pytest-cov==2.11.1
 djangorestframework==3.12.4
 django-filter==2.4.0
 markdown==3.3.4
diff --git a/backend/tests/__init__.py b/backend/tests/__init__.py
new file mode 100644
index 0000000..8435af2
--- /dev/null
+++ b/backend/tests/__init__.py
@@ -0,0 +1,3 @@
+from django.core.wsgi import get_wsgi_application
+
+application = get_wsgi_application()
diff --git a/backend/tests/test_item.py b/backend/tests/test_item.py
new file mode 100644
index 0000000..783dcff
--- /dev/null
+++ b/backend/tests/test_item.py
@@ -0,0 +1,154 @@
+from django.urls import reverse
+from rest_framework import status
+from rest_framework.test import APITestCase
+from django.contrib.auth.models import User
+from .test_todo import create_todo
+
+
+class ItemTest(APITestCase):
+    """Tests API for items."""
+
+    def prepare(self):
+        user = User.objects.create_user("test_user4", "test@test.com", "test_password")
+        self.client.force_authenticate(user=user)
+        to_do_id_1 = create_todo(self.client, "ToDoList1").data["id"]
+        to_do_id_2 = create_todo(self.client, "ToDoList2").data["id"]
+        return to_do_id_1, to_do_id_2
+
+    def get(self, expected_titles, todo_id=None, finished=None):
+        url = reverse("ToDoItems-list")
+        data = {}
+        if finished is not None:
+            data["finished"] = finished
+        if todo_id is not None:
+            data["parent"] = todo_id
+
+        response = self.client.get(url, data, format="json")
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        real_titles = [(d["text"], d["parent"]) for d in response.data["results"]]
+        self.assertEqual(real_titles, expected_titles)
+
+        if finished is not None:
+            item_status = [data["finished"] for data in response.data["results"]]
+            self.assertEqual(finished, all(item_status))
+
+    def post(self, item_text, todo_id, finished=None):
+        url = reverse("ToDoItems-list")
+        if finished is not None:
+            data = {"text": item_text, "parent": todo_id, "finished": finished}
+        else:
+            data = {"text": item_text, "parent": todo_id}
+        response = self.client.post(url, data, format="json")
+
+        self.assertEqual(response.status_code, status.HTTP_201_CREATED)
+        check_finished = False if (finished is None) else finished
+        self.assertEqual(response.data["text"], item_text)
+        self.assertEqual(response.data["parent"], todo_id)
+        self.assertEqual(response.data["finished"], check_finished)
+
+        return response.data["id"], response.data["finished"]
+
+    def get_by_id(self, id, text, finished, parent):
+        url_with_id = reverse("ToDoItems-detail", args=(id,))
+        response = self.client.get(url_with_id, {id: id}, format="json")
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data["text"], text)
+        self.assertEqual(response.data["finished"], finished)
+        self.assertEqual(response.data["parent"], parent)
+
+    def put(self, id, text, parent, finished=None):
+        url_with_id = reverse("ToDoItems-detail", args=(id,))
+        data = {"text": text, "parent": parent}
+        if finished is not None:
+            data["finished"] = finished
+        response = self.client.put(url_with_id, data, format="json")
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data["text"], text)
+        self.assertEqual(response.data["parent"], parent)
+        if finished is not None:
+            self.assertEqual(response.data["finished"], finished)
+
+    def patch(self, id, text=None, finished=None, parent=None):
+        url_with_id = reverse("ToDoItems-detail", args=(id,))
+        data = {}
+        if text is not None:
+            data["text"] = text
+        if finished is not None:
+            data["finished"] = finished
+        if parent is not None:
+            data["parent"] = parent
+        response = self.client.patch(url_with_id, data, format="json")
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        if text is not None:
+            self.assertEqual(response.data["text"], text)
+        if finished is not None:
+            self.assertEqual(response.data["finished"], finished)
+        if parent is not None:
+            self.assertEqual(response.data["parent"], parent)
+
+    def delete(self, id, title, finished, to_do_id):
+        self.get_by_id(id, title, finished, to_do_id)
+        url_with_id = reverse("ToDoItems-detail", args=(id,))
+        response = self.client.delete(url_with_id, {}, format="json")
+        self.assertEqual(response.status_code, status.HTTP_204_NO_CONTENT)
+
+    def test_create_delete(self):
+        """
+        /todo_items/: get, post (create)
+        /todo_items/{id}/: get (read), delete
+        """
+        to_do_id_1, to_do_id_2 = self.prepare()
+        self.get([], to_do_id_1)
+        item_text_1, item_text_2, item_text_3, item_text_4 = "Item1", "Item2", "Item3", "Item4"
+        item_id_1, item_finished_1 = self.post(item_text_1, to_do_id_1)
+        self.get([(item_text_1, to_do_id_1)], to_do_id_1)
+        item_id_2, item_finished_2 = self.post(item_text_2, to_do_id_1, finished=False)
+        self.get([(item_text_1, to_do_id_1), (item_text_2, to_do_id_1)], to_do_id_1)
+        item_id_3, item_finished_3 = self.post(item_text_3, to_do_id_1, finished=True)
+        self.get(
+            [(item_text_1, to_do_id_1), (item_text_2, to_do_id_1), (item_text_3, to_do_id_1)],
+            to_do_id_1,
+        )
+        item_id_4, item_finished_4 = self.post(item_text_4, to_do_id_2, finished=False)
+        self.get(
+            [
+                (item_text_1, to_do_id_1),
+                (item_text_2, to_do_id_1),
+                (item_text_3, to_do_id_1),
+                (item_text_4, to_do_id_2),
+            ]
+        )
+
+        self.get(
+            [(item_text_1, to_do_id_1), (item_text_2, to_do_id_1), (item_text_3, to_do_id_1)],
+            to_do_id_1,
+        )
+        self.get([(item_text_1, to_do_id_1), (item_text_2, to_do_id_1)], to_do_id_1, finished=False)
+        self.get([(item_text_3, to_do_id_1)], to_do_id_1, finished=True)
+
+        self.get_by_id(item_id_1, item_text_1, item_finished_1, to_do_id_1)
+        self.get_by_id(item_id_2, item_text_2, item_finished_2, to_do_id_1)
+        self.get_by_id(item_id_3, item_text_3, item_finished_3, to_do_id_1)
+
+        self.delete(item_id_3, item_text_3, item_finished_3, to_do_id_1)
+        self.get([(item_text_1, to_do_id_1), (item_text_2, to_do_id_1)], to_do_id_1)
+
+    def test_update(self):
+        """
+        /todo_items/{id}/: put (update), patch (partial_update)
+        """
+
+        to_do_id_1, to_do_id_2 = self.prepare()
+
+        item_text_1 = "Item1"
+        item_id_1, item_finished_1 = self.post(item_text_1, to_do_id_1)
+
+        item_text_1_2 = "Item5"
+        self.put(item_id_1, item_text_1_2, to_do_id_2)
+        self.put(item_id_1, item_text_1_2, to_do_id_2, finished=False)
+        self.put(item_id_1, item_text_1_2, to_do_id_2, finished=True)
+
+        item_text_1_3 = "Item6"
+        self.patch(item_id_1, parent=to_do_id_1)
+        self.patch(item_id_1, finished=True)
+        self.patch(item_id_1, text=item_text_1_3)
diff --git a/backend/tests/test_todo.py b/backend/tests/test_todo.py
new file mode 100644
index 0000000..a8b260f
--- /dev/null
+++ b/backend/tests/test_todo.py
@@ -0,0 +1,85 @@
+from django.urls import reverse
+from rest_framework import status
+from rest_framework.test import APITestCase
+from django.contrib.auth.models import User
+
+
+def create_todo(client, title):
+    url = reverse("ToDoLists-list")
+    response = client.post(url, {"title": title}, format="json")
+    return response
+
+
+class ToDoTest(APITestCase):
+    """Tests API for todo."""
+
+    def get(self, expected_titles):
+        url = reverse("ToDoLists-list")
+        response = self.client.get(url, {}, format="json")
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        real_titles = [data["title"] for data in response.data["results"]]
+        self.assertEqual(real_titles, expected_titles)
+
+    def post(self, to_do_title):
+        response = create_todo(self.client, to_do_title)
+        self.assertEqual(response.status_code, status.HTTP_201_CREATED)
+        self.assertEqual(response.data["title"], to_do_title)
+        return response.data["id"]
+
+    def get_by_id(self, id, expected_title):
+        url_with_id = reverse("ToDoLists-detail", args=(id,))
+        response = self.client.get(url_with_id, {id: id}, format="json")
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data["title"], expected_title)
+
+    def put(self, id, new_title):
+        url_with_id = reverse("ToDoLists-detail", args=(id,))
+        response = self.client.put(url_with_id, {"title": new_title}, format="json")
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data["title"], new_title)
+
+    def patch(self, id, new_title):
+        url_with_id = reverse("ToDoLists-detail", args=(id,))
+        response = self.client.patch(url_with_id, {"title": new_title}, format="json")
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data["title"], new_title)
+
+    def delete(self, id, title):
+        self.get_by_id(id, title)
+        url_with_id = reverse("ToDoLists-detail", args=(id,))
+        response = self.client.delete(url_with_id, {}, format="json")
+        self.assertEqual(response.status_code, status.HTTP_204_NO_CONTENT)
+
+    def prepare(self):
+        user = User.objects.create_user("test_user", "test@test.com", "test_password")
+        self.client.force_authenticate(user=user)
+
+    def test_create_delete(self):
+        """
+        lists/{id}/: put (update), patch (partial_update)
+        """
+        self.prepare()
+        to_do_title_1 = "ToDoList1"
+        to_do_id1 = self.post(to_do_title_1)
+        self.put(to_do_id1, "ToDoList11")
+        self.patch(to_do_id1, "ToDoList12")
+
+    def test_todo(self):
+        """
+        lists/: get, post
+        lists/{id}/: get, delete
+        """
+
+        self.prepare()
+        self.get([])
+        to_do_title_1, to_do_title_2 = "ToDoList1", "ToDoList2"
+        to_do_id1 = self.post(to_do_title_1)
+        self.get([to_do_title_1])
+        to_do_id2 = self.post(to_do_title_2)
+        self.get([to_do_title_1, to_do_title_2])
+
+        self.get_by_id(to_do_id1, to_do_title_1)
+        self.get_by_id(to_do_id2, to_do_title_2)
+
+        self.delete(to_do_id2, to_do_title_2)
+        self.get([to_do_title_1])