org.springframework.mock.web.MockMultipartFile;

The org.springframework.mock.web.MockMultipartFile class is a utility class provided by the Spring Framework for testing purposes. It allows developers to create mock multipart files for testing file upload functionality in their web applications. The class provides a constructor that takes in the file name, content type, and byte array representing the contents of the file. It also provides methods to get the file name, content type, and contents of the file as a byte array or input stream. This class is commonly used in unit tests for controllers that handle file uploads.