Create Haml::Engine compatible class

Rakefile

@@ -1 +1,13 @@
-require "bundler/gem_tasks"
+require 'bundler/gem_tasks'
+require 'rake/testtask'
+
+task default: :test
+
+Rake::TestTask.new do |t|
+  t.libs << 'lib' << 'test'
+  files = Dir['test/*_test.rb']
+  files << 'test/haml-spec/hamlit_test.rb'
+  t.test_files = files
+  t.warning = true
+  t.verbose = true
+end

lib/hamlit/engine.rb

@@ -21,4 +21,15 @@ module Hamlit
     filter :StaticMerger
     use :Generator, -> { options[:generator] }
   end
+
+  class HamlEngine
+    def initialize(template, options = {})
+      @template = template
+      @options  = options
+    end
+
+    def render(scope = Object.new, locals = {}, &block)
+      eval Engine.new.call(@template)
+    end
+  end
 end

lib/hamlit/parser.rb

@@ -7,7 +7,7 @@ module Hamlit
     end
 
     def call(template)
-      Haml::Parser.new(template, {}).parse
+      Haml::Parser.new(template, Haml::Options.defaults).parse
     end
   end
 end

test/haml-spec/hamlit_test.rb

@@ -0,0 +1,23 @@
+require "rubygems"
+require "minitest/autorun"
+require "json"
+require "hamlit"
+
+class HamlTest < MiniTest::Unit::TestCase
+  contexts = JSON.parse(File.read(File.dirname(__FILE__) + "/tests.json"))
+  contexts.each do |context|
+    context[1].each do |name, test|
+      define_method("test_spec: #{name} (#{context[0]})") do
+        html             = test["html"]
+        haml             = test["haml"]
+        locals           = Hash[(test["locals"] || {}).map {|x, y| [x.to_sym, y]}]
+        options          = Hash[(test["config"] || {}).map {|x, y| [x.to_sym, y]}]
+        options[:format] = options[:format].to_sym if options.key?(:format)
+        engine           = Hamlit::HamlEngine.new(haml, options)
+        result           = engine.render(Object.new, locals)
+
+        assert_equal html, result.strip
+      end
+    end
+  end
+end