module RuboCop::RSpec::ExpectOffense

def format_offense(source, **replacements)
  replacements.each do |keyword, value|
    value = value.to_s
    source = source.gsub("%{#{keyword}}", value)
                   .gsub("^{#{keyword}}", '^' * value.size)
                   .gsub("_{#{keyword}}", ' ' * value.size)
  end
  source
end