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POMockito: How to mock an interface of JodaTime
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copied!<p>I use <code>JodaTime#DateTime</code>, and I need to mock its behavior. Since it is not possible to directly mock <code>JodaTime#DateTime</code>, I create an interface of it</p> <p>Clock.java</p> <pre><code>public interface Clock { DateTime getCurrentDateTimeEST(); DateTime getFourPM_EST(); DateTime getSevenPM_EST(); } </code></pre> <p>JodaTime.java</p> <pre><code>public class JodaTime implements Clock { @Override public DateTime getCurrentDateTimeEST() { return new DateTime(DateTimeZone.forID("EST")); } @Override public DateTime getFourPM_EST() { DateTime current = getCurrentDateTimeEST(); return new DateTime(current.getYear(), current.getMonthOfYear(), current.getDayOfMonth(), 16, 0, 0, 0, DateTimeZone.forID("EST")); } @Override public DateTime getSevenPM_EST() { DateTime current = getCurrentDateTimeEST(); return new DateTime(current.getYear(), current.getMonthOfYear(), current.getDayOfMonth(), 19, 0, 0, 0, DateTimeZone.forID("EST")); } } </code></pre> <p>Here is the method that I want to test</p> <pre><code>public class PrintProcessor{ Clock jodaTime; public PrintProcessor(){ jodaTime = new JodaTime(); } ... public String getPrintJobName(Shipper shipper){ String printJobName = null; //Get current EST time if(jodaTime.getCurrentDateTimeEST().isBefore(jodaTime.getFourPM_EST()) || jodaTime.getCurrentDateTimeEST().isAfter(jodaTime.getSevenPM_EST())){ //Before 4PM EST and after 7PM EST switch(shipper){ case X: ... }else if(jodaTime.getCurrentDateTimeEST().isBefore(jodaTime.getSevenPM_EST())){ //Between 4PM-7PM EST switch(shipper){ case X: ... } return printJobName; } } </code></pre> <p>As you can see the <code>printJobName</code> depend on the current time of the day relative to the time interval [4PM-7PM] EST and the Shipper name. Since Shipper will be pass via parameter, we can unit test it no problem. But I need to mock the time. So here is what I try</p> <pre><code>@Test public void testGetPrintJobNameBeforeFourPM(){ DateTime current = new DateTime(DateTimeZone.forID("EST")); Clock clock = mock(Clock.class); //Always return 6pm when I try to ask for the current time when(clock.getCurrentDateTimeEST()).thenReturn(new DateTime(current.getYear(), current.getMonthOfYear(), current.getDayOfMonth(), 18, 0, 0, 0, DateTimeZone.forID("EST"))); //Test for Fedex String printJobName = printProcessor.getPrintJobName(Shipper.X); assertEquals("XNCRMNCF", printJobName); } </code></pre> <p>The test should fail since I pass in 6PM, but <code>XNCRMNCF</code> is the name for before 4PM. Do I need to mock <code>printProcessor</code> as well. If what I have is wrong. How should I fix it? <strong>I am trying to learn writing high level java code, please be very criticized about my code. I really want to learn</strong></p>

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