Reflective Pixel

test helper

I added assert_empty to check that an array is empty.

But the line number from test helper.rb was the first line of the test helper, not the line in the test.

Instead, I wanted to see the actual failure as the first line. Welcome remove_me_from_trace(exception)

class Test::Unit::TestCase
  def assert_empty(*args)
    begin
      args.unshift []
      assert_equal *args
    rescue => e
      raise remove_me_from_trace(e)
    end
  end

  def remove_me_from_trace(e)
    x=e.backtrace.shift until (x =~ /test_helper.rb/ )
    e
  end
end