How the level (hexa-test.tmx) for TMXHexTest was created?
It is Hexagonal, but Tiled (as far as I know) doesn support this kind of map.
Use Mappy. It’s old and hasn’t been updated for a long time, but it generates a hex map.
Does Mappy generate .tmx files, supported by cocos2dx?
I think you have to disable the compression part, but it’s been awhile since I used Mappy.