[backend/frontend] Fix partial delete of documents (#3467)

Author: savacano28

openbas-api/src/test/java/io/openbas/rest/DocumentApiTest.java

@@ -41,6 +41,9 @@
 class DocumentApiTest extends IntegrationTest {
 
   @Resource protected ObjectMapper mapper;
+
+  @Autowired private MockMvc mvc;
+
   @Autowired DocumentComposer documentComposer;
   @Autowired ChallengeComposer challengeComposer;
   @Autowired PayloadComposer payloadComposer;
@@ -141,4 +144,18 @@ void givenDocumentShouldFetchRelatedEntities() throws Exception {
       assertThatJson(response).when(IGNORING_ARRAY_ORDER).isEqualTo(relationJson);
     }
   }
+
+  private Document getDocumentWithChallenge() {
+
+    ChallengeComposer.Composer challenge =
+        challengeComposer.forChallenge(ChallengeFixture.createDefaultChallenge());
+
+    BinaryFile badCoffeeFileContent = FileFixture.getBadCoffeeFileContent();
+    return documentComposer
+        .forDocument(DocumentFixture.getDocument(badCoffeeFileContent))
+        .withInMemoryFile(badCoffeeFileContent)
+        .withChallenge(challenge)
+        .persist()
+        .get();
+  }
 }