[WIP] Start an integration test to show Mantle payment detection works

packages/integration-test/test/scheduled/eth-input-data.test.ts

@@ -107,6 +107,30 @@ describe('ETH Fee proxy detection test-suite', () => {
       expect(balance.events[0].amount).toBe('5000000000000000000');
       expect(balance.events[0].timestamp).toBe(1679673933);
     });
+    it('getBalance of ETHFeeProxy request on Mantle', async () => {
+      const pnFactory = new PaymentNetworkFactory(mockAdvancedLogic, CurrencyManager.getDefault());
+      const mockRequest = createMockNativeTokenRequest({
+        network: 'mantle',
+        requestId: '01b3b6fe1ac1031f96d1c44714766be12fd3ef7047d2b7c04f9bd4b7ea928edc64',
+        paymentAddress: '0x4E64C2d06d19D13061e62E291b2C4e9fe5679b93',
+        salt: '4b297a41ff3b247a',
+        feeAddress: '0x35d0e078755cd84d3e0656caab417dee1d7939c7',
+        feeAmount: '0',
+        nativeTokenCode: 'MNT',
+      });
+
+      const detector = pnFactory.getPaymentNetworkFromRequest(mockRequest);
+      expect(detector).not.toBeNull();
+      const balance = await detector!.getBalance(mockRequest);
+
+      expect(balance.balance).toBe('5000000000000000000'); // 5 MATIC
+      expect(balance.events).toHaveLength(1);
+      expect(balance.events[0].name).toBe('payment');
+      const params = balance.events[0].parameters as PaymentTypes.ETHPaymentNetworkEventParameters;
+      expect(params?.to).toBe('0x4E64C2d06d19D13061e62E291b2C4e9fe5679b93');
+      expect(balance.events[0].amount).toBe('5000000000000000000');
+      expect(balance.events[0].timestamp).toBe(1679673933);
+    });
     it('getBalance=0 for an ETHFeeProxy request paid with conversion', async () => {
       const pnFactory = new PaymentNetworkFactory(mockAdvancedLogic, CurrencyManager.getDefault());
       const mockRequest = createMockNativeTokenRequest({