Added test

src/main/java/NTNU/IDATT1002/service/ImageService.java

@@ -45,6 +45,9 @@ public class ImageService {
 
         GeoLocation geoLocation = metaDataExtractor.getGeoLocation(file);
 
+        if(file == null)
+            return Optional.empty();
+
         Image image = new Image();
         Metadata metadata = new Metadata();
         metadata.setImage(image);

src/test/java/NTNU/IDATT1002/service/ImageServiceTest.java

+package NTNU.IDATT1002.service;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import NTNU.IDATT1002.models.Image;
+import NTNU.IDATT1002.models.Tag;
+import NTNU.IDATT1002.models.User;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.Optional;
+import javax.persistence.EntityManager;
+import javax.persistence.EntityManagerFactory;
+import javax.persistence.Persistence;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Test for {@link ImageService}
+ *
+ * @author madslun
+ * @version 1.0 06.04.20
+ */
+
+class ImageServiceTest {
+
+  private UserService userService;
+
+  private final String EMAIL = "test@test.no";
+  private final String USERNAME = "Test_Username";
+  private final String USERNAME2 = "Test_Username2";
+  private final String FIRST_NAME = "Test_First_Name";
+  private final String LAST_NAME = "Test_Last_Name";
+  private final String CALLING_CODE = "Test_Calling_Code";
+  private final String PHONE_NUMBER = "Test_Phone_Number";
+  private final Date DATE = new Date(System.currentTimeMillis());
+  private final String PASSWORD = "Test123";
+
+
+  private File testImage1;
+  private File testImage2;
+  private User user;
+  private User user2;
+  private List<Tag> tags;
+  private Tag tag;
+  private static final Long IMAGE_INITIAL_ID = 1L;
+  private ImageService imageService;
+
+  /**
+   * Sets up necessary data for testing
+   * To be able to save a image a user has to be saved first, therefore i also include UserService
+   * This test unfortunately relies on UserService because of this
+   */
+  @BeforeEach
+  void setUp() {
+    testImage1 = new File("src/test/resources/Images/plsWork.jpg");
+    testImage2 = new File("src/test/java/tmp/test_image_2.jpg");
+    tags = new ArrayList<>();
+    tag = new Tag("Test");
+    tags.add(tag);
+    EntityManagerFactory entityManagerFactory = Persistence.createEntityManagerFactory("ImageApplicationTest");
+    EntityManager entityManager = entityManagerFactory.createEntityManager();
+    imageService = new ImageService(entityManager);
+    userService = new UserService(entityManager);
+    user = userService.createUser(EMAIL, USERNAME, FIRST_NAME, LAST_NAME, CALLING_CODE, PHONE_NUMBER, DATE, PASSWORD).get();
+    user2 = userService.createUser(EMAIL, USERNAME2, FIRST_NAME, LAST_NAME, CALLING_CODE, PHONE_NUMBER, DATE, PASSWORD).get();
+
+  }
+
+  /**
+   * Tests that you can create a image with valid input
+   */
+  @Test
+  void testCreateImageReturnsOptionalWithImage() {
+    Optional<Image> createdImage = imageService.createImage(user, testImage1, tags);
+    assertTrue(createdImage.isPresent());
+    assertEquals(IMAGE_INITIAL_ID, createdImage.get().getId());
+  }
+
+  /**
+   * Test that you cannot create a image when the file is null
+   */
+  @Test
+  void testCreateImageReturnsEmptyOptionalWithInvalidEntity() {
+    Optional<Image> createdImage;
+    createdImage = imageService.createImage(user, null, tags);
+    assertTrue(createdImage.isEmpty());
+  }
+
+  /**
+   * Test that all images from a user it returned as a list
+   */
+  @Test
+  void testGetImageFromUserReturnsCorrectImages() {
+    imageService.createImage(user, testImage1, tags);
+    imageService.createImage(user,testImage1, tags);
+    List<Image> foundImages = imageService.getImageFromUser(user);
+    assertEquals(2, foundImages.size());
+    assertEquals(IMAGE_INITIAL_ID , foundImages.get(0).getId());
+  }
+
+  /**
+   * Test that makes sure only one image is returned when two different users saves an image
+   */
+  @Test
+  void testGetImageFromUserOnlyReturnsOneInstance() {
+    imageService.createImage(user, testImage1, tags);
+    imageService.createImage(user2, testImage2, tags);
+    List<Image> foundImages = imageService.getImageFromUser(user);
+    assertEquals(1, foundImages.size());
+    assertEquals(IMAGE_INITIAL_ID, foundImages.get(0).getId());
+  }
+
+  /**
+   * Test that all images ever created is returned
+   */
+  @Test
+  void testGetAllImagesReturnsAllImages() {
+    imageService.createImage(user, testImage1, tags);
+    imageService.createImage(user2, testImage2, tags);
+    List<Image> foundImages = imageService.getAllImages();
+    assertEquals(2, foundImages.size());
+  }
+}