Choose from any of our gift cards to give to your loved ones
Redeem your gift cards at any of our Merchants
Onyx Gift Cards is a Grenadian company designed to introduce, market and manage gift cards systems in Grenada for retailers and corporations. We are enthusiastic about the effect and influence we will have on the local market. We intend to expand our systems regionally with a range of product offerings and services.
Gift cards are the preferred way of giving and receiving gifts. They carry a monetary value that can be redeemed for gifts at your favorite store.
Onyx GiftCards are “Open Gift Cards” which means that they can be redeemed at multiple merchant locations. They are standard credit card size, can fit into the average wallet and made of PVC plastic. Onyx GiftCards are Barcoded for security and safety for the consumer and bear a disclaimer at the back.
Onyx Giftcards can be bought with a branded Card backer which is black in colour and is designed to fit the card. There is an area to write a brief message to the recipient as well.
A card test case is a documented set of steps, test data, and expected results used to verify how a payment system handles card transactions inside a controlled test environment. It checks approval, decline, validation, refund, and error paths using sandbox credentials or gateway-issued test card numbers, so no real cardholder funds or data are involved.
Payment flows touch more systems than most teams expect: the checkout form, tokenization layer, payment gateway, acquirer response, order database, and the notifications sent afterward. A single card test case targets one behavior across those layers. For example, a case might confirm that an expired card is rejected before a charge attempt, or that a declined authorization leaves the order in a pending state instead of marking it paid.
Good test suites split cases by intent rather than by screen. Authorization rules, input validation, and post-payment events each deserve their own set, because a failure in one rarely shows up in the others.
Most teams follow a structure similar to the one ISTQB describes for test cases in general, adapted to payment data.
Use the test card numbers your payment provider publishes for its sandbox. Stripe documents test card numbers and decline triggers that work only in test mode, and Adyen provides test card numbers and simulated responses in its test environment. These numbers are not tied to real accounts and cannot move money.
Never run a card test case with live cardholder data. PCI DSS limits the storage of sensitive authentication data and requires cardholder data to be protected wherever it exists, including staging and QA systems. If a production-like dataset is required, tokenize or mask it first.
Treat card test cases as living assets. Version them alongside the integration, tag each one with the gateway and API version it targets, and rerun the full set after any change to the checkout, the payment provider, or the order pipeline. A suite that covers approval, decline, validation, refund, and error paths gives you a clear signal before a release reaches real customers.
