@Test public void testPassword() { try { builder.setPassword(null); fail(); } catch (Exception e) { assertThat(e).hasMessage("Password should not be null or empty"); } try { builder.setPassword(""); fail(); } catch (Exception e) { assertThat(e).hasMessage("Password should not be null or empty"); } builder.setPassword("password"); assertThat(builder.getPassword()).isEqualTo("password"); }