WriteEntryCallbackContext writeFeedContext = EdmMockUtil.getWriteEntryCallBackContext();
try {
Field field = callBack.getClass().getDeclaredField("nextEntitySet");
field.setAccessible(true);
field.set(callBack, EdmMockUtil.mockTargetEntitySet());
WriteEntryCallbackResult result = callBack.retrieveEntryResult(writeFeedContext);
assertEquals(1, result.getEntryData().size());
} catch (SecurityException e) {
fail(ODataJPATestConstants.EXCEPTION_MSG_PART_1 + e.getMessage() + ODataJPATestConstants.EXCEPTION_MSG_PART_2);
} catch (NoSuchFieldException e) {
fail(ODataJPATestConstants.EXCEPTION_MSG_PART_1 + e.getMessage() + ODataJPATestConstants.EXCEPTION_MSG_PART_2);