Hardcode location to assets template

ruby/lib/cucumber/html_formatter/formatter.rb

@@ -58,7 +58,7 @@ def post_message
       end
 
       def template_writer
-        @template_writer ||= TemplateWriter.new(AssetsLoader.template)
+        @template_writer ||= TemplateWriter.new
       end
     end
   end

ruby/lib/cucumber/html_formatter/template_writer.rb

@@ -4,9 +4,10 @@ module Cucumber
   module HTMLFormatter
     class TemplateWriter
       attr_reader :template
+      private :template
 
-      def initialize(template)
-        @template = template
+      def initialize
+        @template = AssetsLoader.template
       end
 
       def write_between(from, to)

ruby/spec/cucumber/html_formatter/template_writer_spec.rb

@@ -2,7 +2,11 @@
 
 describe Cucumber::HTMLFormatter::TemplateWriter do
   describe '#write_between' do
-    subject(:template_writer) { described_class.new(template) }
+    subject(:template_writer) { described_class.new }
+
+    before do
+      allow(Cucumber::HTMLFormatter::AssetsLoader).to receive(:template).and_return(template)
+    end
 
     let(:template) { 'Some template {{here}} with content after' }