test/test_revision.rb in rack-revision-1.1.0 vs test/test_revision.rb in rack-revision-1.1.1

@@ -100,9 +100,26 @@
 
     get app_url
     assert_equal "qwe123", last_response.headers["X-Revision"]
   end
 
+  def test_dir_does_not_exist
+    File.write("./test/tmp/REVISION", "example")
+
+    Dir.chdir("./test/tmp") do
+      self.app.reset_revision
+
+      get app_url
+      assert_equal "example", last_response.headers["X-Revision"]
+
+      FileUtils.rm_rf("../tmp")
+      self.app.reset_revision
+
+      get app_url
+      assert_equal "UNDEFINED", last_response.headers["X-Revision"]
+    end
+  end
+
   def test_env_is_present
     self.app.reset_revision
     get app_url
 
     assert_not_nil last_request.env["rack.app_revision"]