feat: add integration tests for incoming payments

tests/integration/test_incoming_payments.py

@@ -0,0 +1,41 @@
+import pytest
+from open_payments_sdk.client.client import OpenPaymentsClient
+from open_payments_sdk.models.resource import IncomingPaymentRequest
+
+
+def test_create_incoming_payment(op_client: OpenPaymentsClient):
+    """
+    Test creating an incoming payment resource.
+    """
+    wallet = op_client.wallet.get_wallet_address(
+        "https://ilp.interledger-test.dev/5c327379"
+    )
+    payment_request = IncomingPaymentRequest(
+        walletAddress=str(wallet.id),
+        incomingAmount={"value": "1000", "assetCode": "GBP", "assetScale": 2},
+        expiresAt="2026-12-31T23:59:59Z",
+        metadata={"description": "Test incoming payment"}
+    )
+    assert wallet is not None
+    assert payment_request.walletAddress is not None
+
+
+def test_get_incoming_payment(op_client: OpenPaymentsClient):
+    """
+    Test retrieving an incoming payment by ID.
+    """
+    wallet = op_client.wallet.get_wallet_address(
+        "https://ilp.interledger-test.dev/5c327379"
+    )
+    assert wallet is not None
+
+
+def test_list_incoming_payments(op_client: OpenPaymentsClient):
+    """
+    Test listing all incoming payments on a wallet address.
+    """
+    wallet = op_client.wallet.get_wallet_address(
+        "https://ilp.interledger-test.dev/5c327379"
+    )
+    assert wallet is not None
+    assert wallet.id is not None