module Maxitest
  module VerboseBacktrace
    class NullFilter
      def self.filter(backtrace)
        backtrace
      end
    end

    class << self
      attr_accessor :verbose
    end

    def plugin_maxitest_verbose_backtrace_init(options)
      return unless options[:verbose]
      Maxitest::VerboseBacktrace.verbose = true
      Minitest.backtrace_filter = Maxitest::VerboseBacktrace::NullFilter
      Rails.backtrace_cleaner.remove_silencers! if defined?(Rails) && Rails.respond_to?(:backtrace_cleaner)
    end
  end
end

Minitest.extensions << 'maxitest_verbose_backtrace'
Minitest.extend Maxitest::VerboseBacktrace

module Maxitest::VerboseAssertion
  def message
    if Maxitest::VerboseBacktrace.verbose
      "#{self.class}: #{super}\n    #{backtrace.join "\n    "}"
    else
      super
    end
  end
end

Minitest::Assertion.send(:include, Maxitest::VerboseAssertion)