Missed NAMED bit of JSON nodes tag

modules/core/src/persistence.cpp

@@ -3781,6 +3781,7 @@ static char* icvJSONParseMap( CvFileStorage* fs, char* ptr, CvFileNode* node )
                     ptr = icvJSONParseMap( fs, ptr, child );
                 else
                     ptr = icvJSONParseValue( fs, ptr, child );
+                child->tag |= CV_NODE_NAMED;
             }
         }
 

modules/core/test/test_io.cpp

@@ -1292,3 +1292,29 @@ TEST(Core_InputOutput, FileStorage_format_yml_gz)
     fs.open("opencv_storage.yml.gz", FileStorage::WRITE | FileStorage::MEMORY);
     EXPECT_EQ(FileStorage::FORMAT_YAML, fs.getFormat());
 }
+
+TEST(Core_InputOutput, FileStorage_json_named_nodes)
+{
+    std::string test =
+        "{ "
+            "\"int_value\": -324,"
+            "\"map_value\": {"
+                "\"str_value\": \"mystring\""
+            "},"
+            "\"array\": [0.2, 0.1]"
+        "}";
+    FileStorage fs(test, FileStorage::READ | FileStorage::MEMORY);
+
+    ASSERT_TRUE(fs["int_value"].isNamed());
+    ASSERT_TRUE(fs["map_value"].isNamed());
+    ASSERT_TRUE(fs["map_value"]["str_value"].isNamed());
+    ASSERT_TRUE(fs["array"].isNamed());
+    ASSERT_FALSE(fs["array"][0].isNamed());
+    ASSERT_FALSE(fs["array"][1].isNamed());
+
+    ASSERT_EQ(fs["int_value"].name(), "int_value");
+    ASSERT_EQ(fs["map_value"].name(), "map_value");
+    ASSERT_EQ(fs["map_value"]["str_value"].name(), "str_value");
+    ASSERT_EQ(fs["array"].name(), "array");
+    fs.release();
+}