1 files changed, 12 insertions, 0 deletions
diff --git a/activerecord/test/cases/query_cache_test.rb b/activerecord/test/cases/query_cache_test.rb
index d8cf235000..494663eb04 100644
--- a/activerecord/test/cases/query_cache_test.rb
+++ b/activerecord/test/cases/query_cache_test.rb
@@ -532,4 +532,16 @@ class QueryCacheExpiryTest < ActiveRecord::TestCase
       end
     end
   end
+
+  test "threads use the same connection" do
+    @connection_1 = ActiveRecord::Base.connection.object_id
+
+    thread_a = Thread.new do
+      @connection_2 = ActiveRecord::Base.connection.object_id
+    end
+
+    thread_a.join
+
+    assert_equal @connection_1, @connection_2
+  end
 end