import org.junit.jupiter.api.Test; import static org.junit.jupiter.api.Assertions.*; class CredentialsTest { @Test void existingCheck() { Credentials cred = new Credentials("apple", "windows"); assertNotNull(cred); } @Test void validData() { Credentials cred = new Credentials("hofmannol", "GERONIMO"); assertTrue(cred.valid()); } @Test void validWrongData() { Credentials cred = new Credentials("brunoklasing", "GEHEIM123"); assertFalse(cred.valid()); } @Test void validWrongData2() { Credentials cred = new Credentials("wimmerma", "GERONIMO"); assertFalse(cred.valid()); } }