haml--haml/test/haml/helper_test.rb

#!/usr/bin/env ruby
require File.dirname(__FILE__) + '/../test_helper'
require 'haml/template'

class HelperTest < Test::Unit::TestCase
  include Haml::Helpers
  Post = Struct.new('Post', :body)
  
  def setup
    @base = ActionView::Base.new
    @base.controller = ActionController::Base.new
    @base.instance_variable_set('@post', Post.new("Foo bar\nbaz"))
  end

  def render(text, options = {})
    if options == :action_view
      @base.render :inline => text, :type => :haml
    else
      scope = options.delete :scope_object
      Haml::Engine.new(text, options).to_html(scope ? scope : Object.new)
    end
  end

  def test_flatten
    assert_equal("FooBar", flatten("FooBar"))

    assert_equal("FooBar", flatten("Foo\rBar"))

    assert_equal("Foo&#x000A;Bar", flatten("Foo\nBar"))

    assert_equal("Hello&#x000A;World!&#x000A;YOU ARE FLAT?&#x000A;OMGZ!",
                 flatten("Hello\nWorld!\nYOU ARE \rFLAT?\n\rOMGZ!"))
  end

  def test_list_of_should_render_correctly
    assert_equal("<li>1</li>\n<li>2</li>\n", render("= list_of([1, 2]) do |i|\n  = i"))
    assert_equal("<li>[1]</li>\n", render("= list_of([[1]]) do |i|\n  = i.inspect"))
    assert_equal("<li>\n  <h1>Fee</h1>\n  <p>A word!</p>\n</li>\n<li>\n  <h1>Fi</h1>\n  <p>A word!</p>\n</li>\n<li>\n  <h1>Fo</h1>\n  <p>A word!</p>\n</li>\n<li>\n  <h1>Fum</h1>\n  <p>A word!</p>\n</li>\n",
      render("= list_of(['Fee', 'Fi', 'Fo', 'Fum']) do |title|\n  %h1= title\n  %p A word!"))
  end

  def test_buffer_access
    assert(render("= buffer") =~ /#<Haml::Buffer:0x[a-z0-9]+>/)
    assert_equal(render("= (buffer == _hamlout)"), "true\n")
  end

  def test_tabs
    assert_equal("foo\n  bar\nbaz\n", render("foo\n- tab_up\nbar\n- tab_down\nbaz"))
    assert_equal("          <p>tabbed</p>\n", render("- buffer.tabulation=5\n%p tabbed"))
  end
  
  def test_helpers_dont_leak
    # Haml helpers shouldn't be accessible from ERB
    render("foo")
    proper_behavior = false

    begin
      ActionView::Base.new.render(:inline => "<%= flatten('Foo\\nBar') %>")
    rescue NoMethodError
      proper_behavior = true
    end
    assert(proper_behavior)

    begin
      ActionView::Base.new.render(:inline => "<%= concat('foo') %>")
    rescue ArgumentError, NameError
      proper_behavior = true
    end    
    assert(proper_behavior)
  end
  
  def test_action_view_included
    assert(Haml::Helpers.action_view?)
  end
  
  def test_form_tag
    # This is usually provided by ActionController::Base.
    def @base.protect_against_forgery?; false; end
    result = render("- form_tag 'foo' do\n  %p bar\n  %strong baz", :action_view)
    should_be = "<form action=\"foo\" method=\"post\">\n  <p>bar</p>\n  <strong>baz</strong>\n</form>\n"
    assert_equal(should_be, result)
  end

  def test_text_area
    assert_equal(%(<textarea id="body" name="body">Foo&#x000A;Bar&#x000A; Baz&#x000A;   Boom</textarea>\n),
                 render('= text_area_tag "body", "Foo\nBar\n Baz\n   Boom"', :action_view))

    assert_equal(%(<textarea cols="40" id="post_body" name="post[body]" rows="20">Foo bar&#x000A;baz</textarea>\n),
                 render('= text_area :post, :body', :action_view))    

    assert_equal(%(<pre>Foo bar&#x000A;   baz</pre>\n),
                 render('= content_tag "pre", "Foo bar\n   baz"', :action_view))    
  end
  
  def test_capture_haml
    assert_equal("\"<p>13</p>\\n\"\n", render("- foo = capture_haml(13) do |a|\n  %p= a\n= foo.dump"))
  end
  
  def test_haml_tag_attribute_html_escaping
    assert_equal("<p id='foo&amp;bar'>baz</p>\n", render("%p{:id => 'foo&bar'} baz", :escape_html => true))
  end

  def test_haml_tag_autoclosed_tags_are_closed
    assert_equal("<br class='foo' />\n", render("- haml_tag :br, :class => 'foo'"))
  end

  def test_haml_tag_non_autoclosed_tags_arent_closed
    assert_equal("<p></p>\n", render("- haml_tag :p"))
  end

  def test_haml_tag_renders_text_on_a_single_line
    assert_equal("<p>#{'a' * 100}</p>\n", render("- haml_tag :p, 'a' * 100"))
  end

  def test_haml_tag_raises_error_for_multiple_content
    assert_raise(Haml::Error) { render("- haml_tag :p, 'foo' do\n  bar") }
  end

  def test_haml_tag_flags
    assert_equal("<p />\n", render("- haml_tag :p, :/"))
    assert_equal("<p>kumquat</p>\n", render("- haml_tag :p, :< do\n  kumquat"))

    assert_raise(Haml::Error) { render("- haml_tag :p, 'foo', :/") }
    assert_raise(Haml::Error) { render("- haml_tag :p, :/ do\n  foo") }
  end

  def test_is_haml
    assert(!ActionView::Base.new.is_haml?)
    assert_equal("true\n", render("= is_haml?"))
    assert_equal("true\n", render("= is_haml?", :action_view))
    assert_equal("false", @base.render(:inline => '<%= is_haml? %>'))
    assert_equal("false\n", render("= render :inline => '<%= is_haml? %>'", :action_view))
  end

  def test_page_class
    controller = Struct.new(:controller_name, :action_name).new('troller', 'tion')
    scope = Struct.new(:controller).new(controller)
    result = render("%div{:class => page_class} MyDiv", :scope_object => scope)
    expected = "<div class='troller tion'>MyDiv</div>\n"
    assert_equal expected, result
  end

  def test_indented_capture
    assert_equal("  \n  Foo\n  ", @base.render(:inline => "  <% res = capture do %>\n  Foo\n  <% end %><%= res %>"))
  end

  def test_capture_deals_properly_with_collections
    Haml::Helpers.module_eval do 
      def trc(collection, &block)
        collection.each do |record|
          puts capture_haml(record, &block)
        end
      end
    end

    assert_equal("1\n\n2\n\n3\n\n", render("- trc([1, 2, 3]) do |i|\n  = i.inspect"))
  end

  def test_find_and_preserve_with_block
    assert_equal("<pre>Foo&#x000A;Bar</pre>\nFoo\nBar\n",
                 render("= find_and_preserve do\n  %pre\n    Foo\n    Bar\n  Foo\n  Bar"))
  end

  def test_preserve_with_block
    assert_equal("<pre>Foo&#x000A;Bar</pre>&#x000A;Foo&#x000A;Bar\n",
                 render("= preserve do\n  %pre\n    Foo\n    Bar\n  Foo\n  Bar"))
  end

  def test_init_haml_helpers
    context = Object.new
    class << context
      include Haml::Helpers
    end
    context.init_haml_helpers

    result = context.capture_haml do
      context.haml_tag :p, :attr => "val" do
        context.puts "Blah"
      end
    end

    assert_equal("<p attr='val'>\n  Blah\n</p>\n", result)
  end

  def test_non_haml
    assert_equal("false\n", render("= non_haml { is_haml? }"))
  end
  
  class ActsLikeTag
    # We want to be able to have people include monkeypatched ActionView helpers
    # without redefining is_haml?.
    # This is accomplished via Object#is_haml?, and this is a test for it.
    include ActionView::Helpers::TagHelper
    def to_s
      content_tag :p, 'some tag content'
    end
  end

  def test_random_class_includes_tag_helper
    assert_equal "<p>some tag content</p>", ActsLikeTag.new.to_s
  end
end