assertTrue(am.findBusinessGroupsOfArea(a3).size() == 1);
assertTrue(am.findBusinessGroupsOfArea(a4).size() == 1);
DBFactory.getInstance().closeSession(); // simulate user clicks
assertTrue(am.countBGAreasOfBGContext(c1) == 4);
assertTrue(am.countBGAreasOfBGContext(c2) == 0);
DBFactory.getInstance().closeSession(); // simulate user clicks
assertTrue(am.findBusinessGroupsOfAreaAttendedBy(id1, "a1-delete", c1).size() == 1);
assertTrue(am.findBusinessGroupsOfAreaAttendedBy(id1, "a2-delete", c1).size() == 1);
assertTrue(am.findBusinessGroupsOfAreaAttendedBy(id1, "a3-delete", c1).size() == 0);