1 files changed, 19 insertions, 0 deletions
diff --git a/activerecord/test/cases/base_test.rb b/activerecord/test/cases/base_test.rb
index 1a1d4ce039..f0ef522515 100644
--- a/activerecord/test/cases/base_test.rb
+++ b/activerecord/test/cases/base_test.rb
@@ -1444,17 +1444,36 @@ class BasicsTest < ActiveRecord::TestCase
     cache_columns = Developer.connection.schema_cache.columns_hash(Developer.table_name)
     assert_includes cache_columns.keys, "first_name"
     assert_not_includes Developer.columns_hash.keys, "first_name"
+    assert_not_includes SubDeveloper.columns_hash.keys, "first_name"
+    assert_not_includes SymbolIgnoredDeveloper.columns_hash.keys, "first_name"
   end
 
   test "ignored columns have no attribute methods" do
     refute Developer.new.respond_to?(:first_name)
     refute Developer.new.respond_to?(:first_name=)
     refute Developer.new.respond_to?(:first_name?)
+    refute SubDeveloper.new.respond_to?(:first_name)
+    refute SubDeveloper.new.respond_to?(:first_name=)
+    refute SubDeveloper.new.respond_to?(:first_name?)
+    refute SymbolIgnoredDeveloper.new.respond_to?(:first_name)
+    refute SymbolIgnoredDeveloper.new.respond_to?(:first_name=)
+    refute SymbolIgnoredDeveloper.new.respond_to?(:first_name?)
   end
 
   test "ignored columns don't prevent explicit declaration of attribute methods" do
     assert Developer.new.respond_to?(:last_name)
     assert Developer.new.respond_to?(:last_name=)
     assert Developer.new.respond_to?(:last_name?)
+    assert SubDeveloper.new.respond_to?(:last_name)
+    assert SubDeveloper.new.respond_to?(:last_name=)
+    assert SubDeveloper.new.respond_to?(:last_name?)
+    assert SymbolIgnoredDeveloper.new.respond_to?(:last_name)
+    assert SymbolIgnoredDeveloper.new.respond_to?(:last_name=)
+    assert SymbolIgnoredDeveloper.new.respond_to?(:last_name?)
+  end
+
+  test "ignored columns are stored as an array of string" do
+    assert_equal(%w(first_name last_name), Developer.ignored_columns)
+    assert_equal(%w(first_name last_name), SymbolIgnoredDeveloper.ignored_columns)
   end
 end