OGM-1588 Fix test for $explain with native queries

Now it checks the result of the operation and it's compatible with
MongoDB 7.0 and 3.6

mongodb/src/test/java/org/hibernate/ogm/datastore/mongodb/test/query/nativequery/MongoDBSessionCLIQueryTest.java

@@ -25,6 +25,7 @@
 import org.junit.rules.ExpectedException;
 
 import com.mongodb.BasicDBList;
+import org.bson.Document;
 import org.fest.assertions.Fail;
 import org.fest.assertions.MapAssert;
 
@@ -726,10 +727,9 @@ public void testFindWithModifiersWithEntity() {
 
 			String nativeQuery = "db." + OscarWildePoem.TABLE_NAME + ".find({" + queryWithModifiers + "})";
 
-			NativeQuery query = session.createNativeQuery( nativeQuery ).addEntity( OscarWildePoem.class );
-			@SuppressWarnings("unchecked")
+			NativeQuery<OscarWildePoem> query = session.createNativeQuery( nativeQuery ).addEntity( OscarWildePoem.class );
 			List<OscarWildePoem> result = query.list();
-			assertThat( result ).onProperty( "id" ).containsExactly( athanasia.getId() );
+			assertThat( result ).containsExactly( athanasia );
 		} );
 	}
 
@@ -743,12 +743,17 @@ public void testFindWithExplain() {
 			queryWithModifiers.append( ", '$explain': true " );
 			String nativeQuery = "db." + OscarWildePoem.TABLE_NAME + ".find({" + queryWithModifiers + "})";
 
-			NativeQuery query = session.createNativeQuery( nativeQuery );
-			@SuppressWarnings("unchecked")
-			List<Object[]> result = query.list();
-			// I'm not sure if we can test the content because this is the result of the explain command
-			// and I believe it might change among versions
-			assertThat( result.get( 0 ) ).isNotEmpty();
+			Object[] result = (Object[]) session.createNativeQuery( nativeQuery ).uniqueResult();
+			assertThat( result ).isNotEmpty();
+			// In MongoDB 7.0, the first entry of the result is "1" (I don't know why).
+			int index = result[0].equals( "1" ) ? 1 : 0;
+			assertThat( result[index] ).isInstanceOf( Document.class );
+			assertThat( ( (Document) result[index] ).getString( "namespace" ) ).isEqualTo( "ogm_test_database." + OscarWildePoem.TABLE_NAME );
+
+			index++;
+			assertThat( result[index] ).isInstanceOf( Document.class );
+			assertThat( ( (Document) result[index] ).getBoolean( "executionSuccess" ) ).isEqualTo( true );
+			assertThat( ( (Document) result[index] ).getInteger( "nReturned" ) ).isEqualTo( 1 );
 		} );
 	}
 

mongodb/src/test/java/org/hibernate/ogm/datastore/mongodb/test/query/nativequery/OscarWildePoem.java

@@ -151,14 +151,14 @@ public boolean equals(Object o) {
 			return false;
 		}
 		OscarWildePoem that = (OscarWildePoem) o;
-		return Objects.equals( name, that.name ) &&
-				Objects.equals( author, that.author ) &&
-				Objects.equals( year, that.year );
+		return rating == that.rating && Objects.equals( name, that.name ) && Objects.equals(
+				author,
+				that.author
+		) && Objects.equals( year, that.year ) && Objects.equals( copiesSold, that.copiesSold );
 	}
 
 	@Override
 	public int hashCode() {
-
-		return Objects.hash( name, author, year );
+		return Objects.hash( name, author, rating, year, copiesSold );
 	}
 }