Adds Server test to ensure lazy loading of LearnerProfile in User.

src/test/java/de/tum/cit/aet/artemis/atlas/profile/LearnerProfileArchitectureTest.java

@@ -0,0 +1,52 @@
+package de.tum.cit.aet.artemis.atlas.profile;
+
+import de.tum.cit.aet.artemis.atlas.AbstractAtlasIntegrationTest;
+import de.tum.cit.aet.artemis.core.domain.User;
+import de.tum.cit.aet.artemis.shared.TestRepositoryConfiguration;
+import io.zonky.test.db.AutoConfigureEmbeddedDatabase;
+import org.hibernate.Hibernate;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.junit.jupiter.api.parallel.Execution;
+import org.junit.jupiter.api.parallel.ExecutionMode;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.context.annotation.Import;
+import org.springframework.security.test.context.support.WithMockUser;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+
+@SpringBootTest
+@AutoConfigureMockMvc
+@ExtendWith(SpringExtension.class)
+@Execution(ExecutionMode.CONCURRENT)
+@Import(TestRepositoryConfiguration.class)
+@AutoConfigureEmbeddedDatabase
+public class LearnerProfileArchitectureTest extends AbstractAtlasIntegrationTest {
+
+    private static final String TEST_PREFIX = "learningpathintegration";
+
+    private static final int NUMBER_OF_STUDENTS = 1;
+
+    private static final String STUDENT1_OF_COURSE = TEST_PREFIX + "student1";
+
+    @BeforeEach
+    void setupTestScenario() {
+        userUtilService.addUsers(TEST_PREFIX, NUMBER_OF_STUDENTS, 1, 1, 1);
+
+        // Add users that are not in the course
+        userUtilService.createAndSaveUser(TEST_PREFIX + "student1337");
+        userUtilService.createAndSaveUser(TEST_PREFIX + "instructor1337");
+
+        learnerProfileUtilService.createLearnerProfilesForUsers(TEST_PREFIX);
+    }
+
+
+    @Test
+    @WithMockUser(username = STUDENT1_OF_COURSE, roles = "USER")
+    void testAll_asStudent() {
+        User user = userTestRepository.getUserWithGroupsAndAuthorities(STUDENT1_OF_COURSE);
+        assertFalse(Hibernate.isInitialized(user.getLearnerProfile()));
+    }
+}