A lot :)

test/system/elements_test.rb

@@ -1,37 +1,39 @@
-require 'application_system_test_case'
+# frozen_string_literal: true
+
+require "application_system_test_case"
 
 class ElementsTest < ApplicationSystemTestCase
   setup do
     @element = elements(:one)
   end
 
-  test 'visiting the index' do
+  test "visiting the index" do
     visit elements_url
-    assert_selector 'h1', text: 'Elemente'
+    assert_selector "h1", text: "Elemente"
   end
 
-  test 'should create element' do
+  test "should create element" do
     visit elements_url
-    click_on 'Element hinzufügen'
+    click_on "Element hinzufügen"
 
-    fill_in_rich_text_area 'Details', with: @element.description_html
-    fill_in 'Pfad', with: @element.path
-    fill_in 'Beschreibung', with: @element.title
-    click_on 'Element erstellen'
+    fill_in_rich_text_area "Details", with: @element.description_html
+    fill_in "Pfad", with: @element.path
+    fill_in "Beschreibung", with: @element.title
+    click_on "Element erstellen"
   end
 
-  test 'should update Element' do
+  test "should update Element" do
     visit element_url(@element)
-    click_on 'Element bearbeiten', match: :first
+    click_on "Element bearbeiten", match: :first
 
-    fill_in_rich_text_area 'Details', with: @element.description_html
-    fill_in 'Pfad', with: @element.path
-    fill_in 'Beschreibung', with: @element.title
-    click_on 'Element aktualisieren'
+    fill_in_rich_text_area "Details", with: @element.description_html
+    fill_in "Pfad", with: @element.path
+    fill_in "Beschreibung", with: @element.title
+    click_on "Element aktualisieren"
   end
 
-  test 'should destroy Element' do
+  test "should destroy Element" do
     visit element_url(@element)
-    click_on 'Element löschen', match: :first
+    click_on "Element löschen", match: :first
   end
 end