@Test public void testExtractMailAllowedEmailFrom() { List<Member> members = new ArrayList<Member>(); Member member = new Member(); member.setIsAllowedEmail(true); member.setEmail("*****@*****.**"); members.add(member); member = new Member(); member.setIsAllowedEmail(false); member.setEmail("*****@*****.**"); members.add(member); member = new Member(); member.setIsAllowedEmail(true); member.setEmail("whiteship20om"); members.add(member); String[] mails = EmailExtractUtil.extractMailAllowedEmailFrom(members); assertThat(mails.length, is(1)); }