1 files changed, 58 insertions, 0 deletions
diff --git a/actionpack/test/dispatch/session/abstract_store_test.rb b/actionpack/test/dispatch/session/abstract_store_test.rb
new file mode 100644
index 0000000000..47616db15a
--- /dev/null
+++ b/actionpack/test/dispatch/session/abstract_store_test.rb
@@ -0,0 +1,58 @@
+# frozen_string_literal: true
+
+require "abstract_unit"
+require "action_dispatch/middleware/session/abstract_store"
+
+module ActionDispatch
+  module Session
+    class AbstractStoreTest < ActiveSupport::TestCase
+      class MemoryStore < AbstractStore
+        def initialize(app)
+          @sessions = {}
+          super
+        end
+
+        def find_session(env, sid)
+          sid ||= 1
+          session = @sessions[sid] ||= {}
+          [sid, session]
+        end
+
+        def write_session(env, sid, session, options)
+          @sessions[sid] = session
+        end
+      end
+
+      def test_session_is_set
+        env = {}
+        as = MemoryStore.new app
+        as.call(env)
+
+        assert @env
+        assert Request::Session.find ActionDispatch::Request.new @env
+      end
+
+      def test_new_session_object_is_merged_with_old
+        env = {}
+        as = MemoryStore.new app
+        as.call(env)
+
+        assert @env
+        session = Request::Session.find ActionDispatch::Request.new @env
+        session["foo"] = "bar"
+
+        as.call(@env)
+        session1 = Request::Session.find ActionDispatch::Request.new @env
+
+        assert_not_equal session, session1
+        assert_equal session.to_hash, session1.to_hash
+      end
+
+      private
+        def app(&block)
+          @env = nil
+          lambda { |env| @env = env }
+        end
+    end
+  end
+end