jhipster/generator-jhipster

I am working on adding more authority checks to my tests. The code jhipster/khipster generated looks like following:

    @Test
    @Transactional
    @Throws(Exception::class)
    fun createPost() {
        val databaseSizeBeforeCreate = postRepository.findAll().size

        // Create the Post
        val postDTO = postMapper.toDto(post)
        restPostMockMvc.perform(
            post(ENTITY_API_URL)
                .contentType(MediaType.APPLICATION_JSON)
                .content(convertObjectToJsonBytes(postDTO))
        ).andExpect(status().isCreated)

        // Validate the Post in the database
        val postList = postRepository.findAll()
        assertThat(postList).hasSize(databaseSizeBeforeCreate + 1)
        val testPost = postList[postList.size - 1]

        assertThat(testPost.title).isEqualTo(DEFAULT_TITLE)
        assertThat(testPost.summary).isEqualTo(DEFAULT_SUMMARY)
        assertThat(testPost.description).isEqualTo(DEFAULT_DESCRIPTION)
        assertThat(testPost.creationTime).isEqualTo(DEFAULT_CREATION_TIME)
        assertThat(testPost.editTime).isEqualTo(DEFAULT_EDIT_TIME)
        assertThat(testPost.editReason).isEqualTo(DEFAULT_EDIT_REASON)
        assertThat(testPost.recommended).isEqualTo(DEFAULT_RECOMMENDED)

Is there a way to specify which user is used while invoking the endpoint method without using the @WithMockUser annotation? The annotation does not work for my use case because I want to make multiple requests in one test with varying user roles.