Show Wordpress login button if it's the only one enabled

app/views/devise/_omniauth_form.html.erb

@@ -1,4 +1,4 @@
-<% if feature?(:twitter_login) || feature?(:facebook_login) || feature?(:google_login) %>
+<% if oauth_logins.any? %>
   <div class="row">
     <div class="small-12 column">
       <div class="margin-bottom">

spec/system/users_auth_spec.rb

@@ -100,6 +100,103 @@ describe "Users" do
   end
 
   context "OAuth authentication" do
+    context "Form buttons" do
+      before do
+        Setting["feature.facebook_login"] = false
+        Setting["feature.twitter_login"] = false
+        Setting["feature.google_login"] = false
+        Setting["feature.wordpress_login"] = false
+      end
+
+      scenario "No button will appear if all features are disabled" do
+        visit new_user_registration_path
+
+        expect(page).not_to have_link "Twitter"
+        expect(page).not_to have_link "Facebook"
+        expect(page).not_to have_link "Google"
+        expect(page).not_to have_link "Wordpress"
+
+        visit new_user_session_path
+
+        expect(page).not_to have_link "Twitter"
+        expect(page).not_to have_link "Facebook"
+        expect(page).not_to have_link "Google"
+        expect(page).not_to have_link "Wordpress"
+      end
+
+      scenario "Twitter login button will appear if feature is enabled" do
+        Setting["feature.twitter_login"] = true
+
+        visit new_user_registration_path
+
+        expect(page).to have_link "Twitter"
+        expect(page).not_to have_link "Facebook"
+        expect(page).not_to have_link "Google"
+        expect(page).not_to have_link "Wordpress"
+
+        visit new_user_session_path
+
+        expect(page).to have_link "Twitter"
+        expect(page).not_to have_link "Facebook"
+        expect(page).not_to have_link "Google"
+        expect(page).not_to have_link "Wordpress"
+      end
+
+      scenario "Facebook login button will appear if feature is enabled" do
+        Setting["feature.facebook_login"] = true
+
+        visit new_user_registration_path
+
+        expect(page).not_to have_link "Twitter"
+        expect(page).to have_link "Facebook"
+        expect(page).not_to have_link "Google"
+        expect(page).not_to have_link "Wordpress"
+
+        visit new_user_session_path
+
+        expect(page).not_to have_link "Twitter"
+        expect(page).to have_link "Facebook"
+        expect(page).not_to have_link "Google"
+        expect(page).not_to have_link "Wordpress"
+      end
+
+      scenario "Google login button will appear if feature is enabled" do
+        Setting["feature.google_login"] = true
+
+        visit new_user_registration_path
+
+        expect(page).not_to have_link "Twitter"
+        expect(page).not_to have_link "Facebook"
+        expect(page).to have_link "Google"
+        expect(page).not_to have_link "Wordpress"
+
+        visit new_user_session_path
+
+        expect(page).not_to have_link "Twitter"
+        expect(page).not_to have_link "Facebook"
+        expect(page).to have_link "Google"
+        expect(page).not_to have_link "Wordpress"
+      end
+
+      scenario "Wordpress login button will appear if feature is enabled" do
+        Setting["feature.wordpress_login"] = true
+
+        visit new_user_registration_path
+
+        expect(page).not_to have_link "Twitter"
+        expect(page).not_to have_link "Facebook"
+        expect(page).not_to have_link "Google"
+        expect(page).to have_link "Wordpress"
+
+        visit new_user_session_path
+
+        expect(page).not_to have_link "Twitter"
+        expect(page).not_to have_link "Facebook"
+        expect(page).not_to have_link "Google"
+        expect(page).to have_link "Wordpress"
+      end
+    end
+
     context "Twitter" do
       let(:twitter_hash) { { provider: "twitter", uid: "12345", info: { name: "manuela" }} }
       let(:twitter_hash_with_email) { { provider: "twitter", uid: "12345", info: { name: "manuela", email: "manuelacarmena@example.com" }} }