Added reproducer for quarkusio#16437 mocking EntityManager

integration-tests/hibernate-orm-panache/src/test/java/io/quarkus/it/panache/PanacheMockingTest.java

@@ -7,7 +7,10 @@
 import javax.persistence.LockModeType;
 import javax.ws.rs.WebApplicationException;
 
+import org.hibernate.Session;
+import org.hibernate.query.Query;
 import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Order;
 import org.junit.jupiter.api.Test;
 import org.mockito.Mockito;
@@ -20,6 +23,17 @@
 @QuarkusTest
 public class PanacheMockingTest {
 
+    @InjectMock
+    Session session;
+
+    @BeforeEach
+    public void setup() {
+        Query mockQuery = Mockito.mock(Query.class);
+        Mockito.doNothing().when(session).persist(Mockito.any());
+        Mockito.when(session.createQuery(Mockito.anyString())).thenReturn(mockQuery);
+        Mockito.when(mockQuery.getSingleResult()).thenReturn(0l);
+    }
+
     @Test
     @Order(1)
     public void testPanacheMocking() {
@@ -79,6 +93,9 @@ public void testPanacheMocking() {
 
         Person.persist(p);
         Assertions.assertNull(p.id);
+        // mocked via EntityManager mocking
+        p.persist();
+        Assertions.assertNull(p.id);
 
         Mockito.when(Person.findById(12l)).thenThrow(new WebApplicationException());
         try {
@@ -95,6 +112,7 @@ public void testPanacheMocking() {
         PanacheMock.verify(Person.class).persist(Mockito.<Object> any(), Mockito.<Object> any());
         PanacheMock.verify(Person.class, Mockito.atLeastOnce()).findById(Mockito.any());
         PanacheMock.verifyNoMoreInteractions(Person.class);
+        Mockito.verify(session, Mockito.times(1)).persist(Mockito.any());
 
         Assertions.assertEquals(0, Person.methodWithPrimitiveParams(true, (byte) 0, (short) 0, 0, 2, 2.0f, 2.0, 'c'));
     }