How to use

getOriginalFile

method

in

com.intellij.testFramework.LightVirtualFile

/**
 * Returns real containing virtual file, not the Light one
 *
 * @return virtual file or null
 */
@Nullable
public static VirtualFile getContainingVirtualFile(PsiFile psiFile) {
 VirtualFile originalFile = psiFile.getViewProvider().getVirtualFile();
 if (originalFile instanceof LightVirtualFile) {
  if (psiFile.getUserData(IndexingDataKeys.VIRTUAL_FILE) != null) {
   originalFile = psiFile.getUserData(IndexingDataKeys.VIRTUAL_FILE);
  }
  else if (((LightVirtualFile)originalFile).getOriginalFile() != null) {
   originalFile = ((LightVirtualFile)originalFile).getOriginalFile();
  }
 }
 return originalFile instanceof LightVirtualFile || originalFile == null || !originalFile.exists() ? null : originalFile;
}

 public static Language calcTemplateLanguage(PsiManager manager, VirtualFile file) {
  while (file instanceof LightVirtualFile) {
   VirtualFile originalFile = ((LightVirtualFile)file).getOriginalFile();
   if (originalFile == null || originalFile == file) {
    break;
   }
   file = originalFile;
  }

  Language result = TemplateDataLanguageMappings.getInstance(manager.getProject()).getMapping(file);
  return result == null ? StdLanguages.HTML : result;
 }
}