require 'test_helper'

class TestPandocRuby < Test::Unit::TestCase
  
  def setup
    @file = File.join(File.dirname(__FILE__), 'files', 'test.md')
    @converter = PandocRuby.new(@file, :t => :rst)
  end
  
  def teardown
    PandocRuby.bin_path = nil
  end
  
  should "call bare pandoc when passed no options" do
    converter = PandocRuby.new(@file)
    converter.expects(:execute).with('pandoc').returns(true)
    assert converter.convert
  end
  
  should "convert with altered bin_path" do
    path = %x[which pandoc].strip
    PandocRuby.bin_path = path
    converter = PandocRuby.new(@file)
    converter.expects(:execute).with("#{path}/pandoc").returns(true)
    assert converter.convert
  end
  
  should "accept short options" do
    @converter.expects(:execute).with('pandoc -t rst').returns(true)
    assert @converter.convert
  end
  
  should "accept long options" do
    converter = PandocRuby.new(@file, :to => :rst)
    converter.expects(:execute).with('pandoc --to=rst').returns(true)
    assert converter.convert
  end
  
  should "accept a variety of options" do
    converter = PandocRuby.new(@file, :s, {:f => :markdown, :to => :rst}, 'no-wrap')
    converter.expects(:execute).with('pandoc -s -f markdown --to=rst --no-wrap').returns(true)
    assert converter.convert
  end
  
  should "convert underscore symbol ares to hyphenated long options" do
    converter = PandocRuby.new(@file, {:email_obfuscation => :javascript}, :table_of_contents)
    converter.expects(:execute).with('pandoc --email-obfuscation=javascript --table-of-contents').returns(true)
    assert converter.convert
  end

  should "accept optional executable" do
    converter = PandocRuby.new(@file, 'html2markdown')
    converter.expects(:execute).with('html2markdown').returns(true)
    assert converter.convert
  end
  
  should "use non-executable second arg as option" do
    converter = PandocRuby.new(@file, 'toc')
    converter.expects(:execute).with('pandoc --toc').returns(true)
    assert converter.convert
  end
  
  PandocRuby::WRITERS.each_key do |w|
    should "convert to #{w} with to_#{w}" do
      converter = PandocRuby.new(@file)
      converter.expects(:execute).with("pandoc --to=#{w}").returns(true)
      assert converter.send("to_#{w}")
    end
  end
  
  should "work with strings" do
    converter = PandocRuby.new('## this is a title')
    assert_match %r(h2), converter.convert
  end
  
  should "alias to_s" do
    assert_equal @converter.convert, @converter.to_s
  end
  
  should "have convert class method" do
    assert_equal @converter.convert, PandocRuby.convert(@file, :t => :rst)
  end
  
  should "run more than 400 times without error" do
    begin
      400.times do
        PandocRuby.convert(@file)
      end 
      assert true
    rescue Errno::EMFILE, Errno::EAGAIN => e
      flunk e
    end
  end
  
  should "have reader and writer constants" do
    assert_equal PandocRuby::READERS, {
      'rst'       => 'reStructuredText',
      'markdown'  => 'markdown',
      'html'      => 'HTML',
      'latex'     => 'LaTeX'
    }
    
    assert_equal PandocRuby::WRITERS, {
      'markdown'      => 'markdown',
      'rst'           => 'reStructuredText',
      'html'          => 'HTML',
      'latex'         => 'LaTeX',
      'context'       => 'ConTeXt',
      'man'           => 'groff man',
      'mediawiki'     => 'MediaWiki markup',
      'texinfo'       => 'GNU Texinfo',
      'docbook'       => 'DocBook XML',
      'opendocument'  => 'OpenDocument XML',
      's5'            => 'S5 HTML and javascript slide show',
      'rtf'           => 'rich text format'
    }
  end
end