### Question:
Utils { public static void setSubjectGroupId(SubjectGroup sg, Long id) { SubjectMatchType subjectMatchType = null; subjectMatchType= getSubjectMatchType(id); sg.setSubjectMatch( subjectMatchType ); }  static void setSubjectGroupId(SubjectGroup sg, Long id); static void setExclusionSubjectGroupId(SubjectGroup sg, Long id); static SubjectMatchType getSubjectMatchType(Long id); static SubjectMatchType getSubjectMatchType(String idStr); static void setSubjectId(Subject subject, Long id); static void setExclusionSubjectId(Subject subject, Long id); static void setAllSubjectId(Subject subject); static Long getSubjectId(Subject subject); static Long getSubjectGroupId(SubjectGroup sg ); static Long getIdFromSubjectMatch(SubjectMatchType matchType); static boolean isExclusion(Subject subject); static boolean isSubjectType(Subject subject); static boolean isExclusion(SubjectGroup subjectGroup); static boolean isExclusion(List<SubjectMatchType> matchTypes); static boolean isSubjectType(List<SubjectMatchType> matchTypes);  }### Answer:
@Test public void testSetSubjectGroupId(){ Long id = 1L; SubjectGroup sg = new SubjectGroup(); Utils.setSubjectGroupId(sg, id); assertNotNull("SubjectGroup must not be null", sg); assertNotNull("SubjectMatch must contain at least 1 element", sg.getSubjectMatch()); assertEquals("Attr value id must be 1 as String", id.toString(), sg.getSubjectMatch().getAttributeValue().getContent().get(0)); }