@Test
 public void updateNonExistingBlogEntry() throws Exception {
   when(service.updateBlogEntry(eq(1L), any(BlogEntry.class))).thenReturn(null);
   mockMvc
       .perform(
           put("/rest/blog-entries/1")
               .content("{\"title\":\"Test Title\"}")
               .contentType(MediaType.APPLICATION_JSON))
       .andExpect(status().isNotFound());
 }
 @Test
 public void deleteExistingBlogEntry() throws Exception {
   BlogEntry deletedBlogEntry = new BlogEntry();
   deletedBlogEntry.setId(1L);
   deletedBlogEntry.setTitle("Test Title");
   when(service.deleteBlogEntry(1L)).thenReturn(deletedBlogEntry);
   mockMvc
       .perform(delete("/rest/blog-entries/1"))
       .andExpect(jsonPath("$.title", is(deletedBlogEntry.getTitle())))
       .andExpect(jsonPath("$.links[*].href", hasItem(endsWith("/blog-entries/1"))))
       .andExpect(status().isOk());
 }
 @Test
 public void updateExistingBlogEntry() throws Exception {
   BlogEntry updatedEntry = new BlogEntry();
   updatedEntry.setId(1L);
   updatedEntry.setTitle("Test Title");
   when(service.updateBlogEntry(eq(1L), any(BlogEntry.class))).thenReturn(updatedEntry);
   mockMvc
       .perform(
           put("/rest/blog-entries/1")
               .content("{\"title\":\"Test Title\"}")
               .contentType(MediaType.APPLICATION_JSON))
       .andExpect(jsonPath("$.title", is(updatedEntry.getTitle())))
       .andExpect(jsonPath("$.links[*].href", hasItem(endsWith("/blog-entries/1"))))
       .andExpect(status().isOk());
 }
 @Test
 public void getExistingBlogEntry() throws Exception {
   BlogEntry entry = new BlogEntry();
   entry.setId(1L);
   entry.setTitle("Test Title");
   Blog blog = new Blog();
   blog.setId(1L);
   entry.setBlog(blog);
   when(service.findBlogEntry(1L)).thenReturn(entry);
   mockMvc
       .perform(get("/rest/blog-entries/1"))
       .andExpect(jsonPath("$.title", is(entry.getTitle())))
       .andExpect(
           jsonPath(
               "$.links[*].href", hasItems(endsWith("/blogs/1"), endsWith("/blog-entries/1"))))
       .andExpect(jsonPath("$.links[*].rel", hasItems(is("self"), is("blog"))))
       .andExpect(status().isOk());
 }
 @Test
 public void deleteNonExistingBlogEntry() throws Exception {
   when(service.deleteBlogEntry(1L)).thenReturn(null);
   mockMvc.perform(delete("/rest/blog-entries/1")).andExpect(status().isNotFound());
 }