1 files changed, 13 insertions, 1 deletions
diff --git a/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb b/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
index 06fc7a4388..8aab7cfa47 100644
--- a/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
+++ b/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
@@ -86,6 +86,10 @@ class DeveloperWithSymbolClassName < Developer
   has_and_belongs_to_many :projects, class_name: :ProjectWithSymbolsForKeys
 end
 
+class DeveloperWithConstantClassName < Developer
+  has_and_belongs_to_many :projects, class_name: ProjectWithSymbolsForKeys
+end
+
 class DeveloperWithExtendOption < Developer
   module NamedExtension
     def category
@@ -939,7 +943,15 @@ class HasAndBelongsToManyAssociationsTest < ActiveRecord::TestCase
 
   def test_with_symbol_class_name
     assert_nothing_raised do
-      DeveloperWithSymbolClassName.new
+      developer = DeveloperWithSymbolClassName.new
+      developer.projects
+    end
+  end
+
+  def test_with_constant_class_name
+    assert_nothing_raised do
+      developer = DeveloperWithConstantClassName.new
+      developer.projects
     end
   end