How to use

hasNull

method

in

com.novocode.junit.CategoryFilter

public static CategoryFilter include(boolean matchAny, Class<?>... categories) {
  if (hasNull(categories)) {
    throw new NullPointerException("has null category");
  }
  return categoryFilter(matchAny, createSet(categories), true, null);
}

public static CategoryFilter exclude(boolean matchAny, Class<?>... categories) {
  if (hasNull(categories)) {
    throw new NullPointerException("has null category");
  }
  return categoryFilter(true, null, matchAny, createSet(categories));
}