feat(payment): configure named gateway providers

packages/payment/test/config.test.ts

@@ -0,0 +1,41 @@
+import { expect, test } from "bun:test";
+import { memoryPaymentStore } from "../src/store.ts";
+import { paymentOptionsFromConfig } from "../src/config.ts";
+
+test("configuration creates any number of named provider gateways", () => {
+  const options = paymentOptionsFromConfig(
+    {
+      default: "india",
+      environment: "test",
+      gateways: {
+        india: {
+          provider: "razorpay",
+          keyId: "rzp_test",
+          keySecret: "secret",
+          webhookSecret: "razorpay-hook",
+        },
+        global: {
+          provider: "stripe",
+          secretKey: "sk_test",
+          publishableKey: "pk_test",
+          webhookSecret: "stripe-hook",
+        },
+        disabled: false,
+      },
+    },
+    memoryPaymentStore(),
+  );
+
+  expect(options.default).toBe("india");
+  expect(options.adapters.map((adapter) => adapter.id)).toEqual(["india", "global"]);
+  expect(options.webhookSecrets).toEqual({ india: "razorpay-hook", global: "stripe-hook" });
+});
+
+test("configuration rejects a disabled or missing default gateway", () => {
+  expect(() =>
+    paymentOptionsFromConfig(
+      { default: "missing", gateways: { sandbox: { provider: "sandbox" } } },
+      memoryPaymentStore(),
+    ),
+  ).toThrow("default gateway 'missing' is not enabled or configured");
+});