Make Test::Unit display errors earlier

Just a monkey patch to make Test::Unit display errors as soon as they happen.

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require 'test/unit'
require 'test/unit/ui/console/testrunner'

class Test::Unit::UI::Console::TestRunner
  def add_fault(fault)
    hax_output(fault)
    @faults << fault
    output_single(fault.single_character_display, 1)
    @already_outputted = true
  end

  def hax_output(fault)
    @io.puts("\n")
    output_single(fault.short_display, 1) # fault.long_display for the full trace
    @io.puts("\n")
  end
end

Useful when your tests take too long to run.

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