adding a test case for the identity map middleware

1 files changed, 34 insertions, 0 deletions

diff --git a/activerecord/test/cases/identity_map/middleware_test.rb b/activerecord/test/cases/identity_map/middleware_test.rb
new file mode 100644
index 0000000000..1004e958e5
--- /dev/null
+++ b/activerecord/test/cases/identity_map/middleware_test.rb
@@ -0,0 +1,34 @@
+require "cases/helper"
+
+module ActiveRecord
+  module IdentityMap
+    class MiddlewareTest < ActiveRecord::TestCase
+      def setup
+        super
+        @enabled = IdentityMap.enabled
+        IdentityMap.enabled = false
+      end
+
+      def teardown
+        super
+        IdentityMap.enabled = @enabled
+      end
+
+      def test_delegates
+        called = false
+        mw = Middleware.new lambda { |env|
+          called = true
+        }
+        mw.call({})
+        assert called, 'middleware delegated'
+      end
+
+      def test_im_enabled_during_delegation
+        mw = Middleware.new lambda { |env|
+          assert IdentityMap.enabled?, 'identity map should be enabled'
+        }
+        mw.call({})
+      end
+    end
+  end
+end