@Test
 public void shouldParseHistoryOutputLocation() {
   final ReportOptions actual = parseAddingRequiredArgs("--historyOutputLocation", "foo");
   assertEquals(new File("foo"), actual.getHistoryOutputLocation());
 }
 @Test
 public void shouldDefaultToNoHistory() {
   final ReportOptions actual = parseAddingRequiredArgs("");
   assertNull(actual.getHistoryInputLocation());
   assertNull(actual.getHistoryOutputLocation());
 }