1 files changed, 35 insertions, 0 deletions
diff --git a/activesupport/test/descendants_tracker_with_autoloading_test.rb b/activesupport/test/descendants_tracker_with_autoloading_test.rb
new file mode 100644
index 0000000000..ae18a56f44
--- /dev/null
+++ b/activesupport/test/descendants_tracker_with_autoloading_test.rb
@@ -0,0 +1,35 @@
+require 'abstract_unit'
+require 'test/unit'
+require 'active_support/descendants_tracker'
+require 'active_support/dependencies'
+require 'descendants_tracker_test_cases'
+
+class DescendantsTrackerWithAutoloadingTest < Test::Unit::TestCase
+  include DescendantsTrackerTestCases
+
+  def test_clear_with_autoloaded_parent_children_and_granchildren
+    mark_as_autoloaded(*ALL) do
+      ActiveSupport::DescendantsTracker.clear
+      ALL.each do |k|
+        assert ActiveSupport::DescendantsTracker.descendants(k).empty?
+      end
+    end
+  end
+
+  def test_clear_with_autoloaded_children_and_granchildren
+    mark_as_autoloaded Child1, Grandchild1, Grandchild2 do
+      ActiveSupport::DescendantsTracker.clear
+      assert_equal [Child2], Parent.descendants
+      assert_equal [], Child2.descendants
+    end
+  end
+
+  def test_clear_with_autoloaded_granchildren
+    mark_as_autoloaded Grandchild1, Grandchild2 do
+      ActiveSupport::DescendantsTracker.clear
+      assert_equal [Child1, Child2], Parent.descendants
+      assert_equal [], Child1.descendants
+      assert_equal [], Child2.descendants
+    end
+  end
+end
+\ No newline at end of file