fix: testing with websocket connection

server/src/test/java/server/api/RecipeControllerTest.java

@@ -8,9 +8,11 @@ import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.TestInfo;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+import org.springframework.context.annotation.Import;
 import org.springframework.http.HttpStatus;
 import org.springframework.messaging.simp.SimpMessagingTemplate;
 import org.springframework.test.context.ActiveProfiles;
+import server.WebSocketConfig;
 import server.database.RecipeRepository;
 
 import java.util.ArrayList;
@@ -20,6 +22,7 @@ import java.util.Set;
 import java.util.stream.LongStream;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 // Spring Boot unit testing magic
 // Before each test the state of the repository is reset by
@@ -30,11 +33,14 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
 // resources/application-mock-data-test.properties
 // This config uses an in-memory database
 @ActiveProfiles("mock-data-test")
+
+// This is required to enable WebSocket messaging in tests
+//
+// Without this line, Spring screams about missing SimpMessagingTemplate bean
+@Import(WebSocketConfig.class)
 public class RecipeControllerTest {
 
-    @Autowired
-    private SimpMessagingTemplate template;
-
+    private final SimpMessagingTemplate template;
     private RecipeController controller;
     private List<Recipe> recipes;
     private final RecipeRepository recipeRepository;
@@ -43,8 +49,9 @@ public class RecipeControllerTest {
 
     // Injects a test repository into the test class
     @Autowired
-    public RecipeControllerTest(RecipeRepository recipeRepository) {
+    public RecipeControllerTest(RecipeRepository recipeRepository, SimpMessagingTemplate template) {
         this.recipeRepository = recipeRepository;
+        this.template = template;
     }
 
     @BeforeEach
@@ -72,6 +79,7 @@ public class RecipeControllerTest {
 
         // If no tags specified, the repository is initialized as empty.
     }
+
     @Test
     public void createOneRecipe() {
         controller.createRecipe(recipes.getFirst());
@@ -92,6 +100,7 @@ public class RecipeControllerTest {
         // The number of recipes returned is the same as the entire input list
         assertEquals(recipes.size(), controller.getRecipes(Optional.empty()).getBody().size());
     }
+
     @Test
     @Tag("test-from-init-data")
     public void getSomeRecipes() {
@@ -99,6 +108,7 @@ public class RecipeControllerTest {
         // The number of recipes returned is the same as the entire input list
         assertEquals(LIMIT, controller.getRecipes(Optional.of(LIMIT)).getBody().size());
     }
+
     @Test
     @Tag("test-from-init-data")
     @Tag("need-ids")
@@ -109,6 +119,7 @@ public class RecipeControllerTest {
                 recipes.get(CHECK_INDEX),
                 controller.getRecipe(recipeIds.get(CHECK_INDEX)).getBody());
     }
+
     @Test
     public void findOneRecipeNotExists() {
         final int CHECK_INDEX = 3;
@@ -117,6 +128,7 @@ public class RecipeControllerTest {
                 HttpStatus.NOT_FOUND,
                 controller.getRecipe((long) CHECK_INDEX).getStatusCode());
     }
+
     @Test
     @Tag("test-from-init-data")
     @Tag("need-ids")
@@ -126,15 +138,18 @@ public class RecipeControllerTest {
         // The object has been successfully deleted
         assertEquals(HttpStatus.OK, controller.deleteRecipe(recipeIds.get(DELETE_INDEX)).getStatusCode());
     }
+
     @Test
     @Tag("test-from-init-data")
     @Tag("need-ids")
     public void deleteOneRecipeCountGood() {
         final int DELETE_INDEX = 5;
         controller.deleteRecipe(recipeIds.get(DELETE_INDEX));
+
         // The count of items decreased by 1 after the 5th item has been removed.
         assertEquals(recipeIds.size() - 1,  recipeRepository.count());
     }
+
     @Test
     public void deleteOneRecipeFail() {
         final Long DELETE_INDEX = 5L;