Fixed issue with returning ref in commits JSON

Added tests to project controller

app/assets/javascripts/gl_dropdown.js.coffee

@@ -102,7 +102,7 @@ class GitLabDropdownFilter
           $el = $(@)
           matches = fuzzaldrinPlus.match($el.text().trim(), search_text)
-          if $el.is(':not(.dropdown-header)')
+          unless $el.is('.dropdown-header')
             if matches.length
               $el.show()
             else

app/controllers/projects_controller.rb

 class ProjectsController < Projects::ApplicationController
   include ExtractsPath
-  before_action :authenticate_user!, except: [:show, :activity]
+  before_action :authenticate_user!, except: [:show, :activity, :refs]
   before_action :project, except: [:new, :create]
   before_action :repository, except: [:new, :create]
   before_action :assign_ref_vars, :tree, only: [:show], if: :repo_exists?
@@ -261,8 +261,8 @@ class ProjectsController < Projects::ApplicationController
     end
     # If reference is commit id - we should add it to branch/tag selectbox
-    ref = params[:ref]
-    if ref && options.flatten.exclude?(ref) && ref =~ /\A[0-9a-zA-Z]{6,52}\z/
+    ref = Addressable::URI.unescape(params[:ref])
+    if ref && options.flatten(2).exclude?(ref) && ref =~ /\A[0-9a-zA-Z]{6,52}\z/
       options['Commits'] = [ref]
     end

spec/controllers/projects_controller_spec.rb

@@ -237,4 +237,24 @@ describe ProjectsController do
       expect(response.status).to eq(401)
     end
   end
+
+  describe "GET refs" do
+    it "should get a list of branches and tags" do
+      get :refs, namespace_id: public_project.namespace.path, id: public_project.path
+
+      parsed_body = JSON.parse(response.body)
+      expect(parsed_body["Branches"]).to include("master")
+      expect(parsed_body["Tags"]).to include("v1.0.0")
+      expect(parsed_body["Commits"]).to be_nil
+    end
+
+    it "should get a list of branches, tags and commits" do
+      get :refs, namespace_id: public_project.namespace.path, id: public_project.path, ref: "123456"
+
+      parsed_body = JSON.parse(response.body)
+      expect(parsed_body["Branches"]).to include("master")
+      expect(parsed_body["Tags"]).to include("v1.0.0")
+      expect(parsed_body["Commits"]).to include("123456")
+    end
+  end
 end