Hi Naveendurai K.
Sorry, but I don't know a good tool for Web programming testing suitable to be integrated into VPL.
I don't fully understand this paragraph
"My opinion is we can have that UI in coding page ,which a teacher can mark the language for question and the students can have that language editor with a template for the selected language."
Please, write an example to try to understand the idea.
Best regards,
Juan Carlos.