1 files changed, 46 insertions, 0 deletions
diff --git a/activerecord/test/cases/i18n_test.rb b/activerecord/test/cases/i18n_test.rb
new file mode 100644
index 0000000000..22981c142a
--- /dev/null
+++ b/activerecord/test/cases/i18n_test.rb
@@ -0,0 +1,46 @@
+# frozen_string_literal: true
+
+require "cases/helper"
+require "models/topic"
+require "models/reply"
+
+class ActiveRecordI18nTests < ActiveRecord::TestCase
+  def setup
+    I18n.backend = I18n::Backend::Simple.new
+  end
+
+  def test_translated_model_attributes
+    I18n.backend.store_translations "en", activerecord: { attributes: { topic: { title: "topic title attribute" } } }
+    assert_equal "topic title attribute", Topic.human_attribute_name("title")
+  end
+
+  def test_translated_model_attributes_with_symbols
+    I18n.backend.store_translations "en", activerecord: { attributes: { topic: { title: "topic title attribute" } } }
+    assert_equal "topic title attribute", Topic.human_attribute_name(:title)
+  end
+
+  def test_translated_model_attributes_with_sti
+    I18n.backend.store_translations "en", activerecord: { attributes: { reply: { title: "reply title attribute" } } }
+    assert_equal "reply title attribute", Reply.human_attribute_name("title")
+  end
+
+  def test_translated_model_attributes_with_sti_fallback
+    I18n.backend.store_translations "en", activerecord: { attributes: { topic: { title: "topic title attribute" } } }
+    assert_equal "topic title attribute", Reply.human_attribute_name("title")
+  end
+
+  def test_translated_model_names
+    I18n.backend.store_translations "en", activerecord: { models: { topic: "topic model" } }
+    assert_equal "topic model", Topic.model_name.human
+  end
+
+  def test_translated_model_names_with_sti
+    I18n.backend.store_translations "en", activerecord: { models: { reply: "reply model" } }
+    assert_equal "reply model", Reply.model_name.human
+  end
+
+  def test_translated_model_names_with_sti_fallback
+    I18n.backend.store_translations "en", activerecord: { models: { topic: "topic model" } }
+    assert_equal "topic model", Reply.model_name.human
+  end
+end