require 'text2svg/cli'

module Text2svgCLITest
  def test_start(t)
    %w(left right center).each do |text_align|
      ARGV[0] = "Hello,\nWorld!"
      ARGV[1] = '--font=/Library/Fonts/Times New Roman.ttf'
      ARGV[2] = "--text-align=#{text_align}"
      out = capture do
        Text2svg::CLI.start
      end
      unless String === out
        t.error 'return value was break'
      end
      unless 0 < out.length
        t.error 'unsupported font?'
      end
      if out.strip[0,4] != "<svg"
        t.error 'output format was break'
      end
    end
  end

  def test_encoding(t)
    [
      ['utf-8', "\xEF\x82\x9B".force_encoding(Encoding::ASCII_8BIT)],
      ['utf-32', "\x00\x00\xFE\xFF\x00\x00\xF0\x9B".force_encoding(Encoding::ASCII_8BIT)]
    ].each do |(encoding, text)|
      ARGV[0] = text
      ARGV[1] = '--font=~/Library/Fonts/fontawesome-webfont.ttf'
      ARGV[2] = "--encoding=#{encoding}"
      out = capture do
        Text2svg::CLI.start
      end
      unless String === out
        t.error 'return value was break'
      end
      unless 0 < out.length
        t.error 'unsupported font?'
      end
      if out.strip[0,4] != "<svg"
        t.error 'output format was break'
      end
    end
  end

  def capture
    out = StringIO.new
    orig = $stdout
    $stdout = out
    yield
    out.string.dup
  ensure
    $stdout = orig
  end
end