Simplify system tests using a small window

spec/spec_helper.rb

@@ -98,6 +98,15 @@ RSpec.configure do |config|
     Delayed::Worker.delay_jobs = false
   end
 
+  config.before(:each, :small_window) do
+    @window_size = Capybara.current_window.size
+    Capybara.current_window.resize_to(639, 479)
+  end
+
+  config.after(:each, :small_window) do
+    Capybara.current_window.resize_to(*@window_size)
+  end
+
   config.before(:each, :remote_translations) do
     allow(RemoteTranslations::Microsoft::AvailableLocales)
       .to receive(:available_locales).and_return(I18n.available_locales.map(&:to_s))

spec/system/debates_spec.rb

@@ -103,17 +103,7 @@ describe "Debates" do
       end
     end
 
-    context "On small devices" do
+    context "On small devices", :small_window do
-      let!(:window_size) { Capybara.current_window.size }
-
-      before do
-        Capybara.current_window.resize_to(639, 479)
-      end
-
-      after do
-        Capybara.current_window.resize_to(*window_size)
-      end
-
       scenario "Shows links to share on telegram and whatsapp too" do
         visit debate_path(create(:debate))
 

spec/system/proposals_spec.rb

@@ -148,17 +148,7 @@ describe "Proposals" do
       end
     end
 
-    context "On small devices" do
+    context "On small devices", :small_window do
-      let!(:window_size) { Capybara.current_window.size }
-
-      before do
-        Capybara.current_window.resize_to(639, 479)
-      end
-
-      after do
-        Capybara.current_window.resize_to(*window_size)
-      end
-
       scenario "Shows links to share on telegram and whatsapp too" do
         visit proposal_path(create(:proposal))
 
@@ -253,17 +243,7 @@ describe "Proposals" do
     end
   end
 
-  describe "Show sticky support button on mobile screens" do
+  describe "Show sticky support button on small screens", :small_window do
-    let!(:window_size) { Capybara.current_window.size }
-
-    before do
-      Capybara.current_window.resize_to(640, 480)
-    end
-
-    after do
-      Capybara.current_window.resize_to(*window_size)
-    end
-
     scenario "On a first visit" do
       proposal = create(:proposal)
       visit proposal_path(proposal)