### Question:
FileService { public int deleteBySpace(String space) throws FileStorageException { fileStorage.deleteFilesBySpace(space); return deleteFileAttributesBySpace(space); } FileService(DataSourceWithDialect dataSourceWithDialect, FileStorage fileStorage);  FileService(String tableName, DataSourceWithDialect dataSourceWithDialect, FileStorage fileStorage); protected  FileService(DataSourceWithDialect dataSourceWithDialect, SqlFileQueryProvider sqlFileQueryProvider, FileStorage fileStorage); FileEntry addFile(String space, String namespace, String name, InputStream inputStream); FileEntry addFile(String space, String namespace, String name, File existingFile); List<FileEntry> listFiles(String space, String namespace); FileEntry getFile(String space, String id); void consumeFileContent(String space, String id, FileContentConsumer fileContentConsumer); T processFileContent(String space, String id, FileContentProcessor<T> fileContentProcessor); int deleteBySpaceAndNamespace(String space, String namespace); int deleteBySpace(String space); int deleteModifiedBefore(Date modificationTime); boolean deleteFile(String space, String id); int deleteFilesEntriesWithoutContent();  }### Answer:
@Test void deleteBySpaceTest() throws Exception { super.deleteBySpaceTest(); Mockito.verify(fileStorage) .deleteFilesBySpace(Mockito.eq(SPACE_1)); }