feat: implement blog project with CI pipeline

tests/unit/test_exceptions.py

@@ -0,0 +1,87 @@
+from app.core.exceptions import (
+    AppException,
+    ForbiddenError,
+    NotFoundError,
+    UnauthorizedError,
+    ValidationError,
+)
+
+
+class TestAppException:
+    def test_default_status_code(self) -> None:
+        exc = AppException(message="Test error")
+        assert exc.message == "Test error"
+        assert exc.status_code == 500
+
+    def test_custom_status_code(self) -> None:
+        exc = AppException(message="Custom error", status_code=400)
+        assert exc.message == "Custom error"
+        assert exc.status_code == 400
+
+    def test_string_representation(self) -> None:
+        exc = AppException(message="Error message")
+        assert str(exc) == "Error message"
+
+
+class TestNotFoundError:
+    def test_default_message(self) -> None:
+        exc = NotFoundError()
+        assert exc.message == "Resource not found"
+        assert exc.status_code == 404
+
+    def test_custom_message(self) -> None:
+        exc = NotFoundError(message="Item not found")
+        assert exc.message == "Item not found"
+        assert exc.status_code == 404
+
+    def test_is_subclass_of_app_exception(self) -> None:
+        exc = NotFoundError()
+        assert isinstance(exc, AppException)
+
+
+class TestValidationError:
+    def test_default_message(self) -> None:
+        exc = ValidationError()
+        assert exc.message == "Validation failed"
+        assert exc.status_code == 400
+
+    def test_custom_message(self) -> None:
+        exc = ValidationError(message="Invalid email format")
+        assert exc.message == "Invalid email format"
+        assert exc.status_code == 400
+
+    def test_is_subclass_of_app_exception(self) -> None:
+        exc = ValidationError()
+        assert isinstance(exc, AppException)
+
+
+class TestUnauthorizedError:
+    def test_default_message(self) -> None:
+        exc = UnauthorizedError()
+        assert exc.message == "Unauthorized"
+        assert exc.status_code == 401
+
+    def test_custom_message(self) -> None:
+        exc = UnauthorizedError(message="Invalid credentials")
+        assert exc.message == "Invalid credentials"
+        assert exc.status_code == 401
+
+    def test_is_subclass_of_app_exception(self) -> None:
+        exc = UnauthorizedError()
+        assert isinstance(exc, AppException)
+
+
+class TestForbiddenError:
+    def test_default_message(self) -> None:
+        exc = ForbiddenError()
+        assert exc.message == "Forbidden"
+        assert exc.status_code == 403
+
+    def test_custom_message(self) -> None:
+        exc = ForbiddenError(message="Access denied")
+        assert exc.message == "Access denied"
+        assert exc.status_code == 403
+
+    def test_is_subclass_of_app_exception(self) -> None:
+        exc = ForbiddenError()
+        assert isinstance(exc, AppException)