feat: Implement medusa payments provider (#13772)

* feat: Implement medusa payments provider

* chore: Improvements after testing

* chore: Add typings to medusa payments

* fix: Final changes to complete medusa payment provider

* update package

* fix: Final changes to complete medusa payment provider

---------

Co-authored-by: adrien2p <adrien.deperetti@gmail.com>
Co-authored-by: Oli Juhl <59018053+olivermrbl@users.noreply.github.com>

packages/modules/payment/integration-tests/__tests__/loaders/providers.spec.ts

@@ -7,9 +7,50 @@ jest.setTimeout(30000)
 
 moduleIntegrationTestRunner<IPaymentModuleService>({
   moduleName: Modules.PAYMENT,
+  moduleOptions: {
+    cloud: {
+      api_key: "test",
+      environment_handle: "test",
+      webhook_secret: "test",
+      endpoint: "test",
+    },
+  },
   testSuite: ({ service }) => {
     describe("Payment Module Service", () => {
       describe("providers", () => {
+        it("should load the system and medusa payments providers by default", async () => {
+          const paymentProviders = await service.listPaymentProviders()
+
+          expect(paymentProviders).toHaveLength(2)
+          expect(paymentProviders).toEqual(
+            expect.arrayContaining([
+              expect.objectContaining({
+                id: "pp_system_default",
+              }),
+              expect.objectContaining({
+                id: "pp_medusa-payments_default",
+              }),
+            ])
+          )
+        })
+
+        it("should create a payment session successfully", async () => {
+          const paymentCollection = await service.createPaymentCollections({
+            currency_code: "USD",
+            amount: 200,
+          })
+
+          const paymentSession = await service.createPaymentSession(
+            paymentCollection.id,
+            {
+              provider_id: "pp_system_default",
+              amount: 200,
+              currency_code: "USD",
+              data: {},
+            }
+          )
+        })
+
         it("should load payment plugins", async () => {
           let error = await service
             .createPaymentCollections([
@@ -46,3 +87,16 @@ moduleIntegrationTestRunner<IPaymentModuleService>({
     })
   },
 })
+
+moduleIntegrationTestRunner<IPaymentModuleService>({
+  moduleName: Modules.PAYMENT,
+  moduleOptions: {},
+  testSuite: ({ service }) =>
+    describe("providers", () => {
+      it("should not load the medusa payments provider if the cloud options are not provided", async () => {
+        const paymentProviders = await service.listPaymentProviders()
+        expect(paymentProviders).toHaveLength(1)
+        expect(paymentProviders[0].id).toBe("pp_system_default")
+      })
+    }),
+})