GPT's example of a test DSL

checkout.test

createUser "John Doe"
addProductToCart "Product ID" 5
checkout

DslInterpreter.java

public class DslInterpreter {
    private final EcommerceSystem system = new EcommerceSystem();

    public void interpret(String script) {
        String[] lines = script.split("\n");
        for (String line : lines) {
            String[] parts = line.split(" ");
            switch (parts[0]) {
                case "createUser":
                    system.createUser(parts[1]);
                    break;
                case "addProductToCart":
                    system.addProductToCart(parts[1], Integer.parseInt(parts[2]));
                    break;
                case "checkout":
                    system.checkout();
                    break;
                default:
                    throw new IllegalArgumentException("Unknown command: " + parts[0]);
            }
        }
    }
}

EcommerceSystem.java

public class EcommerceSystem {
    public void createUser(String name) {
        // implementation
    }

    public void addProductToCart(String productId, int quantity) {
        // implementation
    }

    public void checkout() {
        // implementation
    }
}