1 files changed, 15 insertions, 0 deletions
diff --git a/activesupport/test/inflector_test_cases.rb b/activesupport/test/inflector_test_cases.rb
index f3352e3301..d61ca3fc18 100644
--- a/activesupport/test/inflector_test_cases.rb
+++ b/activesupport/test/inflector_test_cases.rb
@@ -248,12 +248,27 @@ module InflectorTestCases
     "_external_id"    => "External"
   }
 
+  UnderscoreToHumanWithKeepIdSuffix = {
+    "this_is_a_string_ending_with_id" => "This is a string ending with id",
+    "employee_id"                => "Employee id",
+    "employee_id_something_else" => "Employee id something else",
+    "underground"               => "Underground",
+    "_id"                       => "Id",
+    "_external_id"              => "External id"
+  }
+
   UnderscoreToHumanWithoutCapitalize = {
     "employee_salary" => "employee salary",
     "employee_id"     => "employee",
     "underground"     => "underground"
   }
 
+  MixtureToTitleCaseWithKeepIdSuffix = {
+    "this_is_a_string_ending_with_id" => "This Is A String Ending With Id",
+    "EmployeeId"                      => "Employee Id",
+    "Author Id"                       => "Author Id"
+  }
+
   MixtureToTitleCase = {
     "active_record"         => "Active Record",
     "ActiveRecord"          => "Active Record",