test_settings.rb
OmniKassa.config(
secret_key: '002020000000001_KEY1',
merchant_id: '002020000000001',
key_version: 1,
currency_code: 978,
transaction_reference: lambda {|order_id| "omnikassatest#{Time.now.to_i}" },
url: 'https://payment-webinit.simu.omnikassa.rabobank.nl/paymentServlet',
customer_language: :nl
)