More fixes, sync with HTML5lib

Do a better job with the wrapper <div>s added by xhtmldiff and Maruku's to_html_tree method.
More tests fixed.

test/unit/maruku_tex.rb

@@ -0,0 +1,68 @@
+#!/usr/bin/env ruby
+
+require File.dirname(__FILE__) + '/../test_helper'
+
+class RedClothForTexTest < Test::Unit::TestCase
+  def test_basics
+    assert_equal '{\bf First Page}', Maruku.new('*First Page*').to_latex
+    assert_equal '{\em First Page}', Maruku.new('_First Page_').to_latex
+    assert_equal "\\begin{itemize}\n\t\\item A\n\t\t\\item B\n\t\t\\item C\n\t\\end{itemize}", Maruku.new('* A\n* B\n* C').to_latex
+  end
+  
+  def test_blocks
+    assert_equal '\section*{hello}', Maruku.new('#hello#').to_latex 
+    assert_equal '\subsection*{hello}', Maruku.new('##hello##').to_latex
+  end
+  
+  def test_table_of_contents
+
+source = <<EOL
+* [[A]]
+** [[B]]
+** [[C]]
+* D
+** [[E]]
+*** F
+EOL
+
+expected_result = <<EOL
+\\pagebreak
+
+\\section{A}
+Abe
+
+\\subsection{B}
+Babe
+
+\\subsection{C}
+\\pagebreak
+
+\\section{D}
+
+\\subsection{E}
+
+\\subsubsection{F}
+EOL
+    expected_result.chop!
+    assert_equal(expected_result, table_of_contents(source, 'A' => 'Abe', 'B' => 'Babe'))
+  end
+  
+  def test_entities
+    assert_equal "Beck \\& Fowler are 100\\% cool", RedClothForTex.new("Beck & Fowler are 100% cool").to_tex
+  end
+
+  def test_bracket_links
+    assert_equal "such a Horrible Day, but I won't be Made Useless", RedClothForTex.new("such a [[Horrible Day]], but I won't be [[Made Useless]]").to_tex
+  end
+  
+  def test_footnotes_on_abbreviations
+    assert_equal(
+      "such a Horrible Day\\footnote{1}, but I won't be Made Useless", 
+      RedClothForTex.new("such a [[Horrible Day]][1], but I won't be [[Made Useless]]").to_tex
+    )
+  end
+  
+  def test_subsection_depth
+    assert_equal "\\subsubsection*{Hello}", RedClothForTex.new("h4. Hello").to_tex
+  end
+end