RSpec::Matchers.define :be_valid_verbose do
  match(&:valid?)

  failure_message do |model|
    "#{model.class} expected to be valid but had errors:n #{model.errors.full_messages.join('n ')}"
  end

  failure_message_when_negated do |model|
    "#{model.class} expected to have errors, but it did not"
  end

  description do
    "be valid"
  end
end