Tested constructor and getters for Donation

src/test/java/edu/group5/app/model/donation/DonationTest.java

@@ -1,4 +1,23 @@
 package edu.group5.app.model.donation;
 
+import org.junit.jupiter.api.Test;
+
+import java.math.BigDecimal;
+import java.sql.Timestamp;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
 public class DonationTest {
+  @Test
+  void testConstructorAndGetters() {
+    Timestamp now = new Timestamp(System.currentTimeMillis());
+    Donation donation = new Donation(1, 101, 202, new BigDecimal("500.0"), now, "Card");
+    assertEquals(1, donation.getDonationId());
+    assertEquals(101, donation.getUserId());
+    assertEquals(202, donation.getOrganizationId());
+    assertEquals(new BigDecimal("500.0"), donation.getAmount());
+    assertEquals(now, donation.getDate());
+    assertEquals("Card", donation.getPaymentMethod());
+  }
+
 }