From 6d902e07d908769a909db0bf93d84f5be28720af Mon Sep 17 00:00:00 2001
From: Jan Provaznik <jprovaznik@gitlab.com>
Date: Wed, 13 Jun 2018 13:21:12 +0200
Subject: [PATCH] Fix shoulda-matchers in Rails 5

Backports a fix for https://github.com/thoughtbot/shoulda-matchers/issues/913.
This can be removed once new shoulda-matchers version is released.
---
 spec/support/shoulda/matchers/rails_shim.rb | 27 +++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 spec/support/shoulda/matchers/rails_shim.rb

diff --git a/spec/support/shoulda/matchers/rails_shim.rb b/spec/support/shoulda/matchers/rails_shim.rb
new file mode 100644
index 00000000000..8d70598beb5
--- /dev/null
+++ b/spec/support/shoulda/matchers/rails_shim.rb
@@ -0,0 +1,27 @@
+# monkey patch which fixes serialization matcher in Rails 5
+# https://github.com/thoughtbot/shoulda-matchers/issues/913
+# This can be removed when a new version of shoulda-matchers
+# is released
+module Shoulda
+  module Matchers
+    class RailsShim
+      def self.serialized_attributes_for(model)
+        if defined?(::ActiveRecord::Type::Serialized)
+          # Rails 5+
+          serialized_columns = model.columns.select do |column|
+            model.type_for_attribute(column.name).is_a?(
+              ::ActiveRecord::Type::Serialized
+            )
+          end
+
+          serialized_columns.inject({}) do |hash, column| # rubocop:disable Style/EachWithObject
+            hash[column.name.to_s] = model.type_for_attribute(column.name).coder
+            hash
+          end
+        else
+          model.serialized_attributes
+        end
+      end
+    end
+  end
+end