custom rspec matcher for json

json_rspec

#spec/supports/custom_matchers.rb
RSpec::Matchers.define :be_json do |expected|
  match do |actual|
    actual = ActiveSupport::JSON.decode(actual).with_indifferent_access
    expected = ActiveSupport::JSON.decode(expected) unless expected.is_a?(Hash)
    expected = expected.with_indifferent_access
    actual.diff(expected) == {}
  end
end


#spec
expect(response.body).to be_json({"error"=>"Unauthorized"})