Update Loan.java and LoanTest.java

mivan/src/main/java/mivan/model/Loan.java

@@ -1,12 +1,18 @@
 package mivan.model;
 
+import java.io.Serializable;
+
 import javax.persistence.Column;
+import javax.persistence.Entity;
 import javax.persistence.FetchType;
 import javax.persistence.Id;
 import javax.persistence.JoinColumn;
 import javax.persistence.ManyToOne;
+import javax.persistence.Table;
 
-public class Loan {
+@Entity
+@Table(name = "loan")
+public class Loan implements Serializable {
 
 	private static final long serialVersionUID = -5124436115031696628L;
 
@@ -35,6 +41,9 @@ public class Loan {
 	@JoinColumn(name = "user")
 	private User user;
 
+	public Loan() {
+	}
+
 	public Loan(long date_start, long date_end, String state, Item item, Staff staff, User user) {
 		this.date_start = date_start;
 		this.date_end = date_end;

mivan/src/test/java/mivan/LoanTest.java

@@ -59,9 +59,9 @@ public class LoanTest {
 		
 		String update_state = "returned";
 		
-		loanRepository.updateLoan(1L,update_state);
-
-		Optional<Loan> opt_loan = loanRepository.findById(1L);
+		loanRepository.updateLoan(0L,update_state);
+	
+		Optional<Loan> opt_loan = loanRepository.findById(0L);
 
 		Loan loan2 = opt_loan.get();
 		assertTrue(update_state.equals(loan2.getState()));
@@ -72,9 +72,9 @@ public class LoanTest {
 	@Order(3)
 	void testDeleteLoan() {
 		
-		
-		long date_start = 1234;
-		long date_end = 2345;
+		int start_size = loanRepository.getSize();
+		long date_start = 1876;
+		long date_end = 9876;
 		String state = "loaning";
 		
 		Item item = null;
@@ -85,12 +85,12 @@ public class LoanTest {
 
 		loanRepository.addLoan(loan);
 
-		Optional<Loan> opt_loan2 = loanRepository.findById(1L);
+		Optional<Loan> opt_loan2 = loanRepository.findById(0L);
 
 		Loan book2 = opt_loan2.get();
 		long ID = book2.getId();
 
-		int start_size = loanRepository.getSize();
+
 		loanRepository.deleteLoanById(ID);
 
 		int size = loanRepository.getSize();