Added browser test to verify the fix.

script/build/test_slice_tests.sh

@@ -42,6 +42,7 @@ if [ "$LEVEL" == '1' ]; then
   rm test/browser/agent_user_profile_test.rb
   # test/browser/auth_test.rb
   rm test/browser/chat_test.rb
+  rm test/browser/customer_ticket_create_fields_test.rb
   rm test/browser/customer_ticket_create_test.rb
   rm test/browser/first_steps_test.rb
   # test/browser/form_test.rb
@@ -102,6 +103,7 @@ elif [ "$LEVEL" == '2' ]; then
   rm test/browser/agent_user_profile_test.rb
   rm test/browser/auth_test.rb
   rm test/browser/chat_test.rb
+  rm test/browser/customer_ticket_create_fields_test.rb
   rm test/browser/customer_ticket_create_test.rb
   rm test/browser/first_steps_test.rb
   rm test/browser/form_test.rb
@@ -162,6 +164,7 @@ elif [ "$LEVEL" == '3' ]; then
   rm test/browser/agent_user_profile_test.rb
   rm test/browser/auth_test.rb
   rm test/browser/chat_test.rb
+  rm test/browser/customer_ticket_create_fields_test.rb
   rm test/browser/customer_ticket_create_test.rb
   rm test/browser/first_steps_test.rb
   rm test/browser/form_test.rb
@@ -222,6 +225,7 @@ elif [ "$LEVEL" == '4' ]; then
   rm test/browser/agent_user_profile_test.rb
   rm test/browser/auth_test.rb
   rm test/browser/chat_test.rb
+  # test/browser/customer_ticket_create_fields_test.rb
   # test/browser/customer_ticket_create_test.rb
   rm test/browser/first_steps_test.rb
   rm test/browser/form_test.rb
@@ -281,6 +285,7 @@ elif [ "$LEVEL" == '5' ]; then
   # test/browser/agent_user_profile_test.rb
   rm test/browser/auth_test.rb
   rm test/browser/chat_test.rb
+  rm test/browser/customer_ticket_create_fields_test.rb
   rm test/browser/customer_ticket_create_test.rb
   rm test/browser/first_steps_test.rb
   rm test/browser/form_test.rb
@@ -343,6 +348,7 @@ elif [ "$LEVEL" == '6' ]; then
   rm test/browser/agent_user_profile_test.rb
   rm test/browser/auth_test.rb
   # test/browser/chat_test.rb
+  rm test/browser/customer_ticket_create_fields_test.rb
   rm test/browser/customer_ticket_create_test.rb
   # test/browser/first_steps_test.rb
   rm test/browser/form_test.rb

test/browser/customer_ticket_create_fields_test.rb

@@ -0,0 +1,48 @@
+
+require 'browser_test_helper'
+
+class CustomerTicketCreateFieldsTest < TestCase
+  def test_customer_ticket_create
+    @browser = browser_instance
+
+    # create agent session and fetch object attributes
+    login(
+      browser:  browser,
+      username: 'master@example.com',
+      password: 'test',
+      url:      browser_url,
+    )
+    # remove local object attributes bound to the session
+    logout()
+
+    # re-create agent session and fetch object attributes
+    login(
+      browser:  browser,
+      username: 'master@example.com',
+      password: 'test',
+      url:      browser_url,
+    )
+    # re-remove local object attributes bound to the session
+    # there was an issue (#1856) where the old attribute values
+    # persisted and were stored as the original attributes
+    logout()
+
+    # create customer session and fetch object attributes
+    login(
+      username: 'nicole.braun@zammad.org',
+      password: 'test',
+      url:      browser_url,
+    )
+
+    # customer ticket create
+    click(css: 'a[href="#new"]', only_if_exists: true)
+    click(css: 'a[href="#customer_ticket_new"]')
+    sleep 2
+
+    # ensure that the object attributes of the agent session
+    # were removed properly and won't get displayed in the form
+    exists_not(
+      css: '.newTicket input[name="customer_id"]',
+    )
+  end
+end