tag_helper_test.rb

require 'abstract_unit'

class TagHelperTest < ActionView::TestCase
  include RenderERBUtils

  tests ActionView::Helpers::TagHelper

  def test_tag
    assert_equal "<br />", tag("br")
    assert_equal "<br clear=\"left\" />", tag(:br, :clear => "left")
    assert_equal "<br>", tag("br", nil, true)
  end

  def test_tag_options
    str = tag("p", "class" => "show", :class => "elsewhere")
    assert_match(/class="show"/, str)
    assert_match(/class="elsewhere"/, str)
  end

  def test_tag_options_rejects_nil_option
    assert_equal "<p />", tag("p", :ignored => nil)
  end

  def test_tag_options_accepts_false_option
    assert_equal "<p value=\"false\" />", tag("p", :value => false)
  end

  def test_tag_options_accepts_blank_option
    assert_equal "<p included=\"\" />", tag("p", :included => '')
  end

  def test_tag_options_converts_boolean_option
    assert_equal '<p disabled="disabled" itemscope="itemscope" multiple="multiple" readonly="readonly" />',
      tag("p", :disabled => true, :itemscope => true, :multiple => true, :readonly => true)
  end

  def test_content_tag
    assert_equal "<a href=\"create\">Create</a>", content_tag("a", "Create", "href" => "create")
    assert content_tag("a", "Create", "href" => "create").html_safe?
    assert_equal content_tag("a", "Create", "href" => "create"),
                 content_tag("a", "Create", :href => "create")
    assert_equal "<p>&lt;script&gt;evil_js&lt;/script&gt;</p>",
                 content_tag(:p, '<script>evil_js</script>')
    assert_equal "<p><script>evil_js</script></p>",
                 content_tag(:p, '<script>evil_js</script>', nil, false)
  end

  def test_content_tag_with_block_in_erb
    buffer = render_erb("<%= content_tag(:div) do %>Hello world!<% end %>")
    assert_dom_equal "<div>Hello world!</div>", buffer
  end

  def test_content_tag_with_block_and_options_in_erb
    buffer = render_erb("<%= content_tag(:div, :class => 'green') do %>Hello world!<% end %>")
    assert_dom_equal %(<div class="green">Hello world!</div>), buffer
  end

  def test_content_tag_with_block_and_options_out_of_erb
    assert_dom_equal %(<div class="green">Hello world!</div>), content_tag(:div, :class => "green") { "Hello world!" }
  end

  def test_content_tag_with_block_and_options_outside_out_of_erb
    assert_equal content_tag("a", "Create", :href => "create"),
                 content_tag("a", "href" => "create") { "Create" }
  end

  def test_content_tag_nested_in_content_tag_out_of_erb
    assert_equal content_tag("p", content_tag("b", "Hello")),
                 content_tag("p") { content_tag("b", "Hello") },
                 output_buffer
  end

  def test_content_tag_nested_in_content_tag_in_erb
    assert_equal "<p>\n  <b>Hello</b>\n</p>", view.render("test/content_tag_nested_in_content_tag")
  end

  def test_content_tag_with_escaped_array_class
    str = content_tag('p', "limelight", :class => ["song", "play>"])
    assert_equal "<p class=\"song play&gt;\">limelight</p>", str

    str = content_tag('p', "limelight", :class => ["song", "play"])
    assert_equal "<p class=\"song play\">limelight</p>", str
  end

  def test_content_tag_with_unescaped_array_class
    str = content_tag('p', "limelight", {:class => ["song", "play>"]}, false)
    assert_equal "<p class=\"song play>\">limelight</p>", str
  end

  def test_cdata_section
    assert_equal "<![CDATA[<hello world>]]>", cdata_section("<hello world>")
  end

  def test_cdata_section_splitted
    assert_equal "<![CDATA[hello]]]]><![CDATA[>world]]>", cdata_section("hello]]>world")
    assert_equal "<![CDATA[hello]]]]><![CDATA[>world]]]]><![CDATA[>again]]>", cdata_section("hello]]>world]]>again")
  end

  def test_escape_once
    assert_equal '1 &lt; 2 &amp; 3', escape_once('1 < 2 &amp; 3')
  end

  def test_tag_honors_html_safe_for_param_values
    ['1&amp;2', '1 &lt; 2', '&#8220;test&#8220;'].each do |escaped|
      assert_equal %(<a href="#{escaped}" />), tag('a', :href => escaped.html_safe)
    end
  end

  def test_skip_invalid_escaped_attributes
    ['&1;', '&#1dfa3;', '& #123;'].each do |escaped|
      assert_equal %(<a href="#{escaped.gsub(/&/, '&amp;')}" />), tag('a', :href => escaped)
    end
  end

  def test_disable_escaping
    assert_equal '<a href="&amp;" />', tag('a', { :href => '&amp;' }, false, false)
  end

  def test_data_attributes
    ['data', :data].each { |data|
      assert_dom_equal '<a data-a-number="1" data-array="[1,2,3]" data-hash="{&quot;key&quot;:&quot;value&quot;}" data-string="hello" data-symbol="foo" />',
        tag('a', { data => { :a_number => 1, :string => 'hello', :symbol => :foo, :array => [1, 2, 3], :hash => { :key => 'value'} } })
    }
  end
end