### Question:
ClientConfig { public char[] getUsername() { return username; } private  ClientConfig(ClientConfig.Builder builder); char[] getUsername(); char[] getPassword(); String getSportsUrl(); String getLoginUrl(); HttpConfig getHttpConfig(); @Override String toString();  }### Answer:
@Test @DisplayName("Check username") void usernameTest() { assertThat(unit.getUsername()).isEqualTo(username) .isEqualTo(defaultUnit.getUsername()); }