Checkpoint: Added test to ExchangeRepo

Signed-off-by: Marcin Woźniak <y0rune@aol.com>

buisnesslogic/src/main/java/com/plannaplan/services/ExchangeService.java

@@ -13,47 +13,51 @@ import org.springframework.stereotype.Service;
 
 @Service
 public class ExchangeService {
-    
-    @Autowired
-    private ExchangeRepository repo;
 
-    /** 
-     * @param exchange Instance to save in database
-     * @return Exchange Instance contains database id
-     */
-    public Exchange save(Exchange exchange){
-        return this.repo.save(exchange);
-    }
- 
-    /** 
-     * @param id Id of exchange in database
-     * @return Optional Exchange if found
-     */
-    public Optional<Exchange> getById(Long id){
-        return this.repo.findById(id);
-    } 
-    
-    /** 
-     * @param id Id of user
-     * @return List of exchanges that belong to user
-     */
-    public List<Exchange> getByUserId(Long id){
-        return this.repo.getByUserId(id);
-    } 
+	@Autowired
+	private ExchangeRepository repo;
 
-    /** 
-     * @param entity Exchange entity which we would like to delete
-     */
-    public void deleteExchange(Exchange entity){
-        this.repo.delete(entity);
-    }
+	/**
+	 * @param exchange Instance to save in database
+	 * @return Exchange Instance contains database id
+	 */
+	public Exchange save(Exchange exchange) {
+		return this.repo.save(exchange);
+	}
 
-    /** 
-     * @param assignment Assignment to trade for
-     * @param group Desired group
-     * @return Optional with Exchange if exist
-     */
-    public Optional<Exchange> checkForExchange(Assignment assignment, Groups group){
-        return this.repo.checkForExchange(assignment, group);
-    }
+	/**
+	 * @param id Id of exchange in database
+	 * @return Optional Exchange if found
+	 */
+	public Optional<Exchange> getById(Long id) {
+		return this.repo.findById(id);
+	}
+
+	/**
+	 * @param id Id of user
+	 * @return List of exchanges that belong to user
+	 */
+	public List<Exchange> getByUserId(Long id) {
+		return this.repo.getByUserId(id);
+	}
+
+	/**
+	 * @param entity Exchange entity which we would like to delete
+	 */
+	public void deleteExchange(Exchange entity) {
+		this.repo.delete(entity);
+	}
+
+	/**
+	 * @param assignment Assignment to trade for
+	 * @param group      Desired group
+	 * @return Optional with Exchange if exist
+	 */
+	public Optional<Exchange> checkForExchange(Assignment assignment, Groups group) {
+		return this.repo.checkForExchange(assignment, group);
+	}
+
+	public void performExchange() {
+
+	}
 }