### Question:
Crontab { public boolean isServerToInvoke(String serverName) { if (namedServers == null || namedServers.size() == 0) { return true; } for (String nameServer : namedServers) { if (serverName.equals(nameServer)) { return true; } } return false; }  boolean isServerToInvoke(String serverName); public RawCrontabLine rawLine; public CrontabElement minuteElement; public List<Integer> minuteFixedInvocations; public CrontabElement hourElement; public List<Integer> hourFixedInvocations; public CrontabElement dayElement; public List<Integer> dayFixedInvocations; public CrontabElement monthElement; public List<Integer> monthFixedInvocations; public CrontabElement dayOfWeekElement; public List<Integer> dayOfWeekFixedInvocations; public CrontabCommandClassNameElement commandClassName; public List<String> namedServers; public boolean isIntervalInvocation; public long intervalSeconds; public long initialIntervalSeconds; public long multiplicity; public long nextInvocationTime; }### Answer:
@Test public void isServerToInvoke_A$String() throws Exception { Crontab target = new Crontab(); String serverName = null; boolean actual = target.isServerToInvoke(serverName); boolean expected = true; assertEquals(expected, actual); }