Update test_nowpayments_v2_2_0.py

Author: omarakhmedov-web

tests/test_nowpayments_v2_2_0.py

@@ -198,3 +198,19 @@ def test_nowpayments_ipn_test_bypass_rejects_empty_payload(client, app_module, m
 
     assert response.status_code == 400
     assert body['error'] == 'NOWPAYMENTS_IPN_PAYLOAD_INVALID'
+
+
+def test_nowpayments_ipn_test_bypass_invalid_payload_returns_debug_details(client, app_module, monkeypatch):
+    monkeypatch.setenv('NOWPAYMENTS_IPN_TEST_BYPASS', '1')
+
+    response = client.post(
+        '/api/payments/nowpayments/ipn?test_bypass=1',
+        data='',
+        headers={'Content-Type': 'application/json'},
+    )
+    body = response.get_json()
+
+    assert response.status_code == 400
+    assert body['error'] == 'NOWPAYMENTS_IPN_PAYLOAD_INVALID'
+    assert body['details']['debug_payload']['content_type'] == 'application/json'
+    assert body['details']['debug_payload']['payload_keys'] == ['test_bypass']