fix #cache! with expires_in option (#325)

Author: tnp

lib/jbuilder/jbuilder_template.rb

@@ -122,7 +122,8 @@ def _write_fragment_cache(key, options = nil)
   end
 
   def _cache_key(key, options)
-    key = _fragment_name_with_digest(key, options)
+    name_options = options.slice(:skip_digest, :virtual_path)
+    key = _fragment_name_with_digest(key, name_options)
 
     if @context.respond_to?(:fragment_cache_key)
       key = @context.fragment_cache_key(key)

test/jbuilder_template_test.rb

@@ -374,6 +374,18 @@ def assert_collection_rendered(result, context = nil)
     JBUILDER
   end
 
+  test "fragment caching accepts expires_in option" do
+    undef_context_methods :fragment_name_with_digest
+
+    @context.expects(:cache_fragment_name).with("cachekey", {})
+
+    jbuild <<-JBUILDER
+      json.cache! "cachekey", expires_in: 1.minute do
+        json.name "Cache"
+      end
+    JBUILDER
+  end
+
   test "does not perform caching when controller.perform_caching is false" do
     controller.perform_caching = false