Test:chore: add unit tests for Vet entity

src/test/java/org/example/vet1177/entities/VetTest.java

@@ -0,0 +1,91 @@
+package org.example.vet1177.entities;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class VetTest {
+
+    @Test
+    void shouldCreateVetWithConstructor() {
+        // Arrange
+        User user = new User();
+        user.setName("Test User");
+        user.setEmail("test@test.com");
+        user.setPasswordHash("123");
+        user.setRole(Role.VET);
+
+        String licenseId = "LIC123";
+        String specialization = "Surgery";
+        String bookingInfo = "Available weekdays";
+
+        // Act
+        Vet vet = new Vet(user, licenseId, specialization, bookingInfo);
+
+        // Assert
+        assertEquals(user, vet.getUser());
+        assertEquals(licenseId, vet.getLicenseId());
+        assertEquals(specialization, vet.getSpecialization());
+        assertEquals(bookingInfo, vet.getBookingInfo());
+    }
+
+    @Test
+    void shouldSetAndGetFieldsCorrectly() {
+        // Arrange
+        Vet vet = new Vet();
+        User user = new User();
+        user.setName("Test User");
+        user.setEmail("test@test.com");
+        user.setPasswordHash("123");
+        user.setRole(Role.VET);
+
+        // Act
+        vet.setUser(user);
+        vet.setLicenseId("LIC456");
+        vet.setSpecialization("Dentistry");
+        vet.setBookingInfo("Evenings only");
+
+        // Assert
+        assertEquals(user, vet.getUser());
+        assertEquals("LIC456", vet.getLicenseId());
+        assertEquals("Dentistry", vet.getSpecialization());
+        assertEquals("Evenings only", vet.getBookingInfo());
+    }
+
+    @Test
+    void shouldHaveNullFieldsWhenEmptyConstructorUsed() {
+        // Act
+        Vet vet = new Vet();
+
+        // Assert
+        assertNull(vet.getUser());
+        assertNull(vet.getLicenseId());
+        assertNull(vet.getSpecialization());
+        assertNull(vet.getBookingInfo());
+    }
+
+    @Test
+    void userIdShouldBeNullBeforePersist() {
+        // Arrange
+        User user = new User();
+        user.setName("Test User");
+        user.setEmail("test@test.com");
+        user.setPasswordHash("123");
+        user.setRole(Role.VET);
+
+        Vet vet = new Vet();
+        vet.setUser(user);
+
+        // Assert
+        assertNull(vet.getUserId()); //  viktigt test
+    }
+}
+
+
+
+//Testa:
+//
+//Konstruktor med alla fält sätter user, licenseId, specialization och bookingInfo korrekt
+//getUserId() returnerar null innan persist
+//getUser() är null när inte satt
+//Setters fungerar för licenseId, specialization och bookingInfo