Fix errors when running entire suite due to class name collision

The Post class is created everywhere in the test suite, and due to that
when applying the Array() logic to refactor content_tag_for, some other
change to the Post class was breaking record tag tests.

The solution is to rename the class to not collide with others
already defined in the test suite.

actionpack/lib/action_view/helpers/record_tag_helper.rb

@@ -83,8 +83,8 @@ def div_for(record, *args, &block)
       def content_tag_for(tag_name, single_or_multiple_records, prefix = nil, options = nil, &block)
         options, prefix = prefix, nil if prefix.is_a?(Hash)
 
-        Array.wrap(single_or_multiple_records).map do |single_record|
-          content_tag_for_single_record tag_name, single_record, prefix, options, &block
+        Array(single_or_multiple_records).map do |single_record|
+          content_tag_for_single_record(tag_name, single_record, prefix, options, &block)
         end.join("\n").html_safe
       end
 

actionpack/test/template/record_tag_helper_test.rb

 require 'abstract_unit'
 
-class Post
+class RecordTagPost
   extend ActiveModel::Naming
   include ActiveModel::Conversion
   attr_accessor :id, :body
@@ -20,77 +20,77 @@ class RecordTagHelperTest < ActionView::TestCase
 
   def setup
     super
-    @post = Post.new
+    @post = RecordTagPost.new
   end
 
   def test_content_tag_for
-    expected = %(<li class="post" id="post_45"></li>)
+    expected = %(<li class="record_tag_post" id="record_tag_post_45"></li>)
     actual = content_tag_for(:li, @post) { }
     assert_dom_equal expected, actual
   end
 
   def test_content_tag_for_prefix
-    expected = %(<ul class="archived_post" id="archived_post_45"></ul>)
+    expected = %(<ul class="archived_record_tag_post" id="archived_record_tag_post_45"></ul>)
     actual = content_tag_for(:ul, @post, :archived) { }
     assert_dom_equal expected, actual
   end
 
   def test_content_tag_for_with_extra_html_options
-    expected = %(<tr class="post bar" id="post_45" style='background-color: #f0f0f0'></tr>)
-    actual = content_tag_for(:tr, @post, :class => "bar", :style => "background-color: #f0f0f0") { }
+    expected = %(<tr class="record_tag_post special" id="record_tag_post_45" style='background-color: #f0f0f0'></tr>)
+    actual = content_tag_for(:tr, @post, :class => "special", :style => "background-color: #f0f0f0") { }
     assert_dom_equal expected, actual
   end
 
   def test_content_tag_for_with_prefix_and_extra_html_options
-    expected = %(<tr class="archived_post bar" id="archived_post_45" style='background-color: #f0f0f0'></tr>)
-    actual = content_tag_for(:tr, @post, :archived, :class => "bar", :style => "background-color: #f0f0f0") { }
+    expected = %(<tr class="archived_record_tag_post special" id="archived_record_tag_post_45" style='background-color: #f0f0f0'></tr>)
+    actual = content_tag_for(:tr, @post, :archived, :class => "special", :style => "background-color: #f0f0f0") { }
     assert_dom_equal expected, actual
   end
 
   def test_block_not_in_erb_multiple_calls
-    expected = %(<div class="post bar" id="post_45">What a wonderful world!</div>)
-    actual = div_for(@post, :class => "bar") { @post.body }
+    expected = %(<div class="record_tag_post special" id="record_tag_post_45">What a wonderful world!</div>)
+    actual = div_for(@post, :class => "special") { @post.body }
     assert_dom_equal expected, actual
-    actual = div_for(@post, :class => "bar") { @post.body }
+    actual = div_for(@post, :class => "special") { @post.body }
     assert_dom_equal expected, actual
   end
 
   def test_block_works_with_content_tag_for_in_erb
-    expected = %(<tr class="post" id="post_45">What a wonderful world!</tr>)
+    expected = %(<tr class="record_tag_post" id="record_tag_post_45">What a wonderful world!</tr>)
     actual = render_erb("<%= content_tag_for(:tr, @post) do %><%= @post.body %><% end %>")
     assert_dom_equal expected, actual
   end
 
   def test_div_for_in_erb
-    expected = %(<div class="post bar" id="post_45">What a wonderful world!</div>)
-    actual = render_erb("<%= div_for(@post, :class => 'bar') do %><%= @post.body %><% end %>")
+    expected = %(<div class="record_tag_post special" id="record_tag_post_45">What a wonderful world!</div>)
+    actual = render_erb("<%= div_for(@post, :class => 'special') do %><%= @post.body %><% end %>")
     assert_dom_equal expected, actual
   end
 
   def test_content_tag_for_collection
-    post_1 = Post.new { |post| post.id = 101; post.body = "Hello!" }
-    post_2 = Post.new { |post| post.id = 102; post.body = "World!" }
-    expected = %(<li class="post" id="post_101">Hello!</li>\n<li class="post" id="post_102">World!</li>)
+    post_1 = RecordTagPost.new { |post| post.id = 101; post.body = "Hello!" }
+    post_2 = RecordTagPost.new { |post| post.id = 102; post.body = "World!" }
+    expected = %(<li class="record_tag_post" id="record_tag_post_101">Hello!</li>\n<li class="record_tag_post" id="record_tag_post_102">World!</li>)
     actual = content_tag_for(:li, [post_1, post_2]) { |post| post.body }
     assert_dom_equal expected, actual
   end
 
   def test_div_for_collection
-    post_1 = Post.new { |post| post.id = 101; post.body = "Hello!" }
-    post_2 = Post.new { |post| post.id = 102; post.body = "World!" }
-    expected = %(<div class="post" id="post_101">Hello!</div>\n<div class="post" id="post_102">World!</div>)
+    post_1 = RecordTagPost.new { |post| post.id = 101; post.body = "Hello!" }
+    post_2 = RecordTagPost.new { |post| post.id = 102; post.body = "World!" }
+    expected = %(<div class="record_tag_post" id="record_tag_post_101">Hello!</div>\n<div class="record_tag_post" id="record_tag_post_102">World!</div>)
     actual = div_for([post_1, post_2]) { |post| post.body }
     assert_dom_equal expected, actual
   end
 
   def test_content_tag_for_single_record_is_html_safe
-    result = div_for(@post, :class => "bar") { @post.body }
+    result = div_for(@post, :class => "special") { @post.body }
     assert result.html_safe?
   end
 
   def test_content_tag_for_collection_is_html_safe
-    post_1 = Post.new { |post| post.id = 101; post.body = "Hello!" }
-    post_2 = Post.new { |post| post.id = 102; post.body = "World!" }
+    post_1 = RecordTagPost.new { |post| post.id = 101; post.body = "Hello!" }
+    post_2 = RecordTagPost.new { |post| post.id = 102; post.body = "World!" }
     result = content_tag_for(:li, [post_1, post_2]) { |post| post.body }
     assert result.html_safe?
   end