[P4ADEV-1667] added test

src/test/java/it/gov/pagopa/pu/debtpositions/config/RepositoryRestCustomConfigurationTest.java

@@ -0,0 +1,57 @@
+package it.gov.pagopa.pu.debtpositions.config;
+
+import it.gov.pagopa.pu.debtpositions.model.DebtPosition;
+import jakarta.persistence.EntityManager;
+import jakarta.persistence.metamodel.EntityType;
+import jakarta.persistence.metamodel.Metamodel;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.Mockito;
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.springframework.data.rest.core.config.RepositoryRestConfiguration;
+import org.springframework.data.rest.webmvc.config.RepositoryRestConfigurer;
+
+import java.util.Collections;
+
+import static org.mockito.Mockito.times;
+
+@ExtendWith(MockitoExtension.class)
+class RepositoryRestCustomConfigurationTest {
+
+  @Mock
+  private EntityManager entityManager;
+
+  @Mock
+  private Metamodel metamodel;
+
+  @Mock
+  private EntityType<?> entityType;
+
+  @InjectMocks
+  private RepositoryRestCustomConfiguration config;
+
+  @BeforeEach
+  void setUp(){
+    Mockito.when(entityManager.getMetamodel()).thenReturn(metamodel);
+    Mockito.when(metamodel.getEntities()).thenReturn(Collections.singleton(entityType));
+    Mockito.when(entityType.getJavaType()).thenReturn((Class) DebtPosition.class);
+  }
+
+  @Test
+  void givenRepositoryRestConfigurerThenOk() {
+    RepositoryRestConfiguration repositoryRestConfiguration = Mockito.mock(RepositoryRestConfiguration.class);
+    // Act
+    RepositoryRestConfigurer configurer = config.repositoryRestConfigurer();
+    configurer.configureRepositoryRestConfiguration(repositoryRestConfiguration,null);
+
+    // Assert
+    Assertions.assertNotNull(configurer);
+    Mockito.verify(entityManager, times(1)).getMetamodel();
+    Mockito.verify(metamodel, times(1)).getEntities();
+    Mockito.verify(entityType, times(1)).getJavaType();
+  }
+}