Global refactoring of the project to use poetry and implement tests,

fixing bugs, changing the handling of dto and db models, preparing to
add new functionality

tests/test_authors.py

@@ -0,0 +1,12 @@
+import pytest
+from alembic import command
+from alembic.config import Config
+from fastapi.testclient import TestClient
+from sqlmodel import select, delete, Session
+
+from library_service.main import app
+from tests.test_misc import setup_database
+
+client = TestClient(app)
+
+#TODO: add tests for author endpoints

tests/test_books.py

@@ -0,0 +1,58 @@
+import pytest
+from alembic import command
+from alembic.config import Config
+from fastapi.testclient import TestClient
+from sqlmodel import select, delete, Session
+
+from library_service.main import app
+from tests.test_misc import setup_database
+
+client = TestClient(app)
+
+#TODO: assert descriptions
+#TODO: add comments
+#TODO: update tests
+
+def test_create_book(setup_database):
+    response = client.post("/books", json={"title": "Test Book", "description": "Test Description"})
+    print(response.json())
+    assert response.status_code == 200
+    assert response.json() == {"id": 1, "title": "Test Book", "description": "Test Description"}
+
+def test_get_existing_book(setup_database):
+    response = client.get("/books/1")
+    print(response.json())
+    assert response.status_code == 200
+    assert response.json() == {"id": 1, "title": "Test Book", "description": "Test Description", 'authors': []}
+
+def test_get_not_existing_book(setup_database):
+    response = client.get("/books/2")
+    print(response.json())
+    assert response.status_code == 404
+    assert response.json() == {"detail": "Book not found"}
+
+def test_update_book(setup_database):
+    response = client.get("/books/1")
+    assert response.status_code == 200
+    response = client.put("/books/1", json={"title": "Updated Book", "description": "Updated Description"})
+    assert response.status_code == 200
+    assert response.json() == {"id": 1, "title": "Updated Book", "description": "Updated Description"}
+
+def test_update_not_existing_book(setup_database):
+    response = client.put("/books/2", json={"title": "Updated Book", "description": "Updated Description"})
+    assert response.status_code == 404
+    assert response.json() == {"detail": "Book not found"}
+
+def test_delete_book(setup_database):
+    response = client.get("/books/1")
+    assert response.status_code == 200
+    response = client.delete("/books/1")
+    assert response.status_code == 200
+    assert response.json() == {"id": 1, "title": "Updated Book", "description": "Updated Description"}
+
+def test_not_existing_delete_book(setup_database):
+    response = client.delete("/books/2")
+    assert response.status_code == 404
+    assert response.json() == {"detail": "Book not found"}
+
+#TODO: add tests for other books endpoints

tests/test_main.py

@@ -1,70 +0,0 @@
-import pytest # pyright: ignore
-from fastapi.testclient import TestClient
-from app.main import app
-
-@pytest.fixture()
-def client():
-    with TestClient(app) as test_client:
-        yield test_client
-
-# Тесты для авторов
-def test_create_author(client):
-    response = client.post("/authors/", json={"name": "Author Name"})
-    assert response.status_code == 200
-    assert response.json()["name"] == "Author Name"
-
-def test_read_authors(client):
-    response = client.get("/authors/")
-    assert response.status_code == 200
-    assert isinstance(response.json(), list)  # Проверяем, что ответ - это список
-
-def test_update_author(client):
-    # Сначала создаем автора, чтобы его обновить
-    create_response = client.post("/authors/", json={"name": "Author Name"})
-    author_id = create_response.json()["id"]
-
-    response = client.put(f"/authors/{author_id}", json={"name": "Updated Author Name"})
-    assert response.status_code == 200
-    assert response.json()["name"] == "Updated Author Name"
-
-def test_delete_author(client):
-    # Сначала создаем автора, чтобы его удалить
-    create_response = client.post("/authors/", json={"name": "Author Name"})
-    author_id = create_response.json()["id"]
-    author_name = create_response.json()["name"]
-
-    response = client.delete(f"/authors/{author_id}")
-    assert response.status_code == 200
-    assert response.json()["name"] == author_name
-
-# Тесты для книг
-def test_create_book(client):
-    response = client.post("/books/", json={"title": "Book Title", "description": "Book Description"})
-    assert response.status_code == 200
-    assert response.json()["title"] == "Book Title"
-
-def test_read_books(client):
-    response = client.get("/books/")
-    assert response.status_code == 200
-    assert isinstance(response.json(), list)  # Проверяем, что ответ - это список
-
-def test_update_book(client):
-    # Сначала создаем книгу, чтобы ее обновить
-    create_response = client.post("/books/", json={"title": "Book Title", "description": "Book Description"})
-    book_id = create_response.json()["id"]
-
-    response = client.put(f"/books/{book_id}", json={"title": "Updated Book Title", "description": "Updated Description"})
-    assert response.status_code == 200
-    assert response.json()["title"] == "Updated Book Title"
-
-def test_delete_book(client):
-    # Сначала создаем книгу, чтобы ее удалить
-    create_response = client.post("/books/", json={"title": "Book Title", "description": "Book Description"})
-    book_id = create_response.json()["id"]
-    book_title = create_response.json()["title"]
-    book_description = create_response.json()["description"]
-
-    response = client.delete(f"/books/{book_id}")
-    assert response.status_code == 200
-    assert response.json()["title"] == book_title
-    assert response.json()["description"] == book_description

tests/test_misc.py

@@ -0,0 +1,75 @@
+import pytest
+from alembic import command
+from alembic.config import Config
+from fastapi.testclient import TestClient
+from sqlmodel import select, delete, Session
+
+from library_service.main import app, engine
+from library_service.models.db import Author, Book, AuthorBookLink
+
+client = TestClient(app)
+
+@pytest.fixture(scope="module")
+def setup_database():
+    # Save original data backup
+    with Session(engine) as session:
+        original_authors = session.exec(select(Author)).all()
+        original_books = session.exec(select(Book)).all()
+        original_links = session.exec(select(AuthorBookLink)).all()
+    # Reset database
+    alembic_cfg = Config("alembic.ini")
+    with engine.begin() as connection:
+        alembic_cfg.attributes['connection'] = connection
+        command.downgrade(alembic_cfg, 'base')
+        command.upgrade(alembic_cfg, 'head')
+    # Check database state after reset
+    with Session(engine) as session:
+        assert len(session.exec(select(Author)).all()) == 0
+        assert len(session.exec(select(Book)).all()) == 0
+        assert len(session.exec(select(AuthorBookLink)).all()) == 0
+    yield # Here pytest will start testing
+    # Restore original data from backup
+    with Session(engine) as session:
+        for author in original_authors:
+            session.add(author)
+        for book in original_books:
+            session.add(book)
+        for link in original_links:
+            session.add(link)
+        session.commit()
+
+# Test the main page of the application
+def test_main_page():
+    response = client.get("/")  # Send GET request to the main page
+    try:
+        content = response.content.decode('utf-8')  # Decode response content
+        # Find indices of key elements in the content
+        title_idx = content.index("Welcome to ")
+        description_idx = content.index("Description: ")
+        version_idx = content.index("Version: ")
+        time_idx = content.index("Current Time: ")
+        status_idx = content.index("Status: ")
+
+        assert response.status_code == 200, "Invalid response status"
+        assert content.startswith('<!doctype html>'), "Not HTML"
+        assert content.endswith('</html>'), "HTML tag not closed"
+        assert content[title_idx+1] != '<', "Title not provided"
+        assert content[description_idx+1] != '<', "Description not provided"
+        assert content[version_idx+1] != '<', "Version not provided"
+        assert content[time_idx+1] != '<', "Time not provided"
+        assert content[status_idx+1] != '<', "Status not provided"
+    except Exception as e:
+        print(f"Error: {e}")  # Print error if an exception occurs
+        assert False, "Unexpected error"  # Force test failure on unexpected error
+
+# Test application info endpoint
+def test_app_info_test():
+    response = client.get("/api/info")  # Send GET request to the info endpoint
+    assert response.status_code == 200, "Invalid response status"
+    assert response.json()["status"] == "ok", "Status not ok"
+    assert response.json()["app_info"]["title"] != "", "Title not provided"
+    assert response.json()["app_info"]["description"] != "", "Description not provided"
+    assert response.json()["app_info"]["version"] != "", "Version not provided"
+    # Check time difference
+    assert 0 < (datetime.now() - datetime.fromisoformat(response.json()["server_time"])).total_seconds(), "Negative time difference"
+    assert (datetime.now() - datetime.fromisoformat(response.json()["server_time"])).total_seconds() < 1, "Time difference too large"

tests/test_relationships.py

@@ -0,0 +1,12 @@
+import pytest
+from alembic import command
+from alembic.config import Config
+from fastapi.testclient import TestClient
+from sqlmodel import select, delete, Session
+
+from library_service.main import app
+from tests.test_misc import setup_database
+
+client = TestClient(app)
+
+#TODO: add tests for relationships endpoints