clear cache before running

test/pages_test.rb

@@ -7,7 +7,7 @@ class PagesTest < ActionDispatch::IntegrationTest
     visit root_path
     # ^ will raise on JS errors
 
-    assert_equal page.status_code, 200
+    assert_equal 200, page.status_code
 
     screenshot!
   end

test/support/integration_test.rb

@@ -2,7 +2,13 @@ require 'capybara'
 module IntegrationTest
   include Capybara::DSL
 
+  def setup
+    super
+    %x[rm -rf test/dummy/tmp/cache]
+  end
+
   def teardown
+    super
     Capybara.reset_sessions!
     Capybara.use_default_driver
   end