Evaluate before content on tag open

Author: blocknotes

lib/prawn_html/context.rb

@@ -62,6 +62,12 @@ def merged_styles
         end
     end
 
+    # :nocov:
+    def inspect
+      map(&:class).map(&:to_s).join(', ')
+    end
+    # :nocov:
+
     # Remove the last element from the context
     def remove_last
       last.on_context_remove(self) if last.respond_to?(:on_context_remove)

lib/prawn_html/document_renderer.rb

@@ -9,6 +9,7 @@ class DocumentRenderer
     #
     # @param pdf [PdfWrapper] target PDF wrapper
     def initialize(pdf)
+      @before_content = []
       @buffer = []
       @context = Context.new
       @last_margin = 0
@@ -42,6 +43,7 @@ def on_tag_open(tag_name, attributes:, element_styles: '')
       options = { width: pdf.page_width, height: pdf.page_height }
       tag_class.new(tag_name, attributes: attributes, options: options).tap do |element|
         setup_element(element, element_styles: element_styles)
+        @before_content.push(element.before_content) if element.respond_to?(:before_content)
         @last_tag_open = true
       end
     end
@@ -106,8 +108,9 @@ def apply_tag_open_styles(element)
     end
 
     def prepare_text(content)
-      before_content = context.before_content
-      text = before_content ? ::Oga::HTML::Entities.decode(before_content) : ''
+      text = @before_content.any? ? ::Oga::HTML::Entities.decode(@before_content.join) : ''
+      @before_content.clear
+
       return (@last_text = text + content) if context.white_space_pre?
 
       content = content.lstrip if @last_text[-1] == ' ' || @last_tag_open

spec/units/prawn_html/document_renderer_spec.rb

@@ -63,27 +63,7 @@
 
     let(:content) { 'some content' }
 
-    before do
-      allow(Oga::HTML::Entities).to receive(:decode).and_call_original
-    end
-
     it { is_expected.to be_nil }
-
-    it 'calls the decode method for before content' do
-      on_text_node
-      expect(Oga::HTML::Entities).to have_received(:decode)
-    end
-
-    context 'without before content' do
-      before do
-        allow(context).to receive(:before_content).and_return(nil)
-      end
-
-      it "doesn't call the decode method" do
-        on_text_node
-        expect(Oga::HTML::Entities).not_to have_received(:decode)
-      end
-    end
   end
 
   describe '#render' do