Syntax and code improvements

app/helpers/diff_helper.rb

@@ -129,18 +129,6 @@ module DiffHelper
     end
   end
 
-  def hide_whitespace?
-    params[:w] == '1'
-  end
-
-  def params_with_whitespace
-    hide_whitespace? ? request.query_parameters.except(:w) : request.query_parameters.merge(w: 1)
-  end
-
-  def toggle_whitespace_link(url)
-    link_to "#{hide_whitespace? ? 'Show' : 'Hide'} whitespace changes", url, class: "btn btn-default"
-  end
-
   def commit_diff_whitespace_link(project, commit)
     url = namespace_project_commit_path(project.namespace, project, commit.id, params_with_whitespace)
     toggle_whitespace_link(url)
@@ -150,4 +138,18 @@ module DiffHelper
     url = diffs_namespace_project_merge_request_path(project.namespace, project, merge_request, params_with_whitespace)
     toggle_whitespace_link(url)
   end
+
+  private
+
+  def hide_whitespace?
+    params[:w] == '1'
+  end
+
+  def params_with_whitespace
+    hide_whitespace? ? request.query_parameters.except(:w) : request.query_parameters.merge(w: 1)
+  end
+
+  def toggle_whitespace_link(url)
+    link_to "#{hide_whitespace? ? 'Show' : 'Hide'} whitespace changes", url, class: 'btn btn-default'
+  end
 end

spec/features/merge_requests/toggle_whitespace_changes.rb

@@ -9,13 +9,14 @@ feature 'Toggle Whitespace Changes', js: true, feature: true do
   end
 
   it 'has a button to toggle whitespace changes' do
-    expect(page).to have_content "Hide whitespace changes"
+    expect(page).to have_content 'Hide whitespace changes'
   end
 
   describe 'clicking "Hide whitespace changes" button' do
     it 'toggles the "Hide whitespace changes" button' do
-      click_link "Hide whitespace changes"
-      expect(page).to have_content "Show whitespace changes"
+      click_link 'Hide whitespace changes'
+
+      expect(page).to have_content 'Show whitespace changes'
     end
   end
 end