import org.junit.jupiter.api.AfterAll; import org.junit.jupiter.api.BeforeAll; import org.junit.jupiter.api.Test; import java.io.File; import static org.junit.jupiter.api.Assertions.*; class StorageTest { static Storage storage; static String testFilePath = "/tmp/test.txt"; @BeforeAll static void init() { storage = new Storage(); } @AfterAll static void clear() { File myObj = new File(testFilePath); myObj.delete(); } @Test void constructor() { assertInstanceOf(Storage.class, storage); } @Test void export() { } @Test void load() { } @Test void writeFile() { String content = "test"; assertTrue(storage.writeFile(testFilePath, content)); File f = new File(testFilePath); assertTrue(f.isFile()); } }