class method self.ranges

# File railties/lib/rails/test_unit/test_parser.rb, line 21
        def self.ranges(filepath)
          queue = [Prism.parse_file(filepath).value]
          begins_to_ends = {}
          while (node = queue.shift)
            case node.type
            when :def_node
              begins_to_ends[node.location.start_line] = node.location.end_line
            when :call_node
              begins_to_ends[node.location.start_line] = node.location.end_line
            end

            queue.concat(node.compact_child_nodes)
          end
          begins_to_ends
        end