Allow for "just text" pipelines

Author: gjtorikian

lib/html_pipeline.rb

@@ -181,11 +181,11 @@ def call(text, context: {}, result: {})
       },
     }
 
-    if @node_filters.empty?
+    if @node_filters.empty? && !@sanitization_config.nil?
       instrument("sanitization.html_pipeline", payload) do
         result[:output] = Selma::Rewriter.new(sanitizer: @sanitization_config, options: rewriter_options).rewrite(html)
       end
-    else
+    elsif @node_filters.any?
       instrument("call_node_filters.html_pipeline", payload) do
         @node_filters.each { |filter| filter.context = (filter.context || {}).merge(context) }
         result[:output] = Selma::Rewriter.new(sanitizer: @sanitization_config, handlers: @node_filters, options: rewriter_options).rewrite(html)

lib/html_pipeline/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 class HTMLPipeline
-  VERSION = "3.2.2"
+  VERSION = "3.2.3"
 end

test/html_pipeline_test.rb

@@ -104,6 +104,18 @@ def test_incorrect_node_filters
     end
   end
 
+  def test_just_text_filters
+    text = "Hey there, @billy."
+
+    pipeline = HTMLPipeline.new(
+      text_filters: [TestReverseFilter.new],
+      convert_filter: nil,
+    )
+    result = pipeline.call(text)[:output]
+
+    assert_equal(".yllib@ ,ereht yeH", result)
+  end
+
   def test_kitchen_sink
     text = "Hey there, @billy. Love to see <marquee>yah</marquee>!"