@GetMapping("/homepage")
    public ResponseEntity getHomePageCollections(@RequestHeader(value = HEADER_APP_TOKEN) String headerAppToken) {
        CollectionObject homepageCollections = null;
        String errorMessage = null;
        HttpStatus httpStatus;
        try {
            homepageCollections = collectionService.getHomePageCollections();
            if (nonNull(homepageCollections)) {
                httpStatus = HttpStatus.OK;
                LOGGER.info("{} Response Status from CollectionController -- getHomePageCollections !! {}", TRANSACTION_SUCCESS_CODE, TRANSACTION_SUCCESS);
            } else {
                httpStatus = HttpStatus.NO_CONTENT;
                LOGGER.info("{} Response Status from CollectionController -- getHomePageCollections !! {}", NO_CONTENT_CODE, NO_CONTENT);
            }
        } // catch logic
        return ResponseEntity.status(httpStatus).contentType(MediaType.APPLICATION_JSON).body(httpStatus == HttpStatus.OK || httpStatus == HttpStatus.NO_CONTENT ? homepageCollections : errorMessage);
    }

@Test
    public void testGetHomePageCollection() {
        when(collectionService.getHomePageCollections()).thenReturn(null);

        ResponseEntity responseEntity = collectionController.getHomePageCollections(HEADER_APP_TOKEN);
        assertThat(responseEntity.getStatusCode()).isEqualTo(HttpStatus.NO_CONTENT);
    }