diff --git a/test/integration/updating_permissions_for_apps_with_many_permissions_test.rb b/test/integration/updating_permissions_for_apps_with_many_permissions_test.rb
index 3b638931c..0cff95573 100644
--- a/test/integration/updating_permissions_for_apps_with_many_permissions_test.rb
+++ b/test/integration/updating_permissions_for_apps_with_many_permissions_test.rb
@@ -26,26 +26,16 @@ def assert_select_permission_to_grant_with_javascript
 
     click_link "Update permissions for #{@application.name}"
 
-    @autocomplete_input = find(".autocomplete__input")
+    @autocomplete_input_element = find(".autocomplete__input")
     @select_element = find("#new_permission_id-select", visible: false)
-    assert_equal "", @autocomplete_input.value
-    assert_equal "", @select_element.value
 
-    # when I type a few characters from a permission called "adding"
-    @autocomplete_input.fill_in with: "add"
-    autocomplete_option = find(".autocomplete__option")
-
-    # the autcomplete value reflects what I typed, a matching option appears, but the select element remains empty
-    assert_equal "add", @autocomplete_input.value
-    assert_equal @new_permission_to_grant.name, autocomplete_option.text
-    assert_equal "", @select_element.value
-
-    # when I click on the matching option
-    autocomplete_option.click
-
-    # the autocomplete and select elements reflect my selection
-    assert_equal @new_permission_to_grant.name, @autocomplete_input.value
-    assert_equal @new_permission_to_grant.id.to_s, @select_element.value
+    assert_select_with_autocomplete(
+      autocomplete_input_element: @autocomplete_input_element,
+      select_element: @select_element,
+      option_text: @new_permission_to_grant.name,
+      option_value: @new_permission_to_grant.id.to_s,
+      unique_partial_string: "add",
+    )
   end
 
   context "with apps that have more than eight permissions" do
diff --git a/test/support/autocomplete_helpers.rb b/test/support/autocomplete_helpers.rb
new file mode 100644
index 000000000..c03f3c4fd
--- /dev/null
+++ b/test/support/autocomplete_helpers.rb
@@ -0,0 +1,28 @@
+module AutocompleteHelpers
+  def assert_select_with_autocomplete(
+    autocomplete_input_element:,
+    select_element:,
+    option_text:,
+    option_value:,
+    unique_partial_string:
+  )
+    assert_equal "", autocomplete_input_element.value
+    assert_equal "", select_element.value
+
+    # when I type a few characters from the option that are unique to that option
+    autocomplete_input_element.fill_in with: unique_partial_string
+    autocomplete_option = find(".autocomplete__option")
+
+    # the autcomplete value reflects what I typed, a matching option appears, but the select element remains empty
+    assert_equal unique_partial_string, autocomplete_input_element.value
+    assert_equal option_text, autocomplete_option.text
+    assert_equal "", select_element.value
+
+    # when I click on the matching option
+    autocomplete_option.click
+
+    # the autocomplete and select elements reflect my selection
+    assert_equal option_text, autocomplete_input_element.value
+    assert_equal option_value, select_element.value
+  end
+end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index e310ca3f2..2e50df3a5 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -90,6 +90,7 @@ def assert_not_authorised
 require "support/removing_access_helpers"
 require "support/updating_permissions_helpers"
 require "support/flash_helpers"
+require "support/autocomplete_helpers"
 
 class ActiveRecord::Base
   mattr_accessor :shared_connection
@@ -117,6 +118,7 @@ class ActionDispatch::IntegrationTest
   include RemovingAccessHelpers
   include UpdatingPermissionsHelpers
   include FlashHelpers
+  include AutocompleteHelpers
 
   def assert_response_contains(content)
     assert page.has_content?(content), "Expected to find '#{content}' in:\n#{page.text}"