test: spam protection for upload

tests/dos_robustness/dos_robustness.py

@@ -0,0 +1,23 @@
+from src.libs.common import delay, to_app_id, to_index
+from src.libs.custom_logger import get_custom_logger
+from src.steps.da import StepsDataAvailability
+from src.test_data import DATA_TO_DISPERSE
+
+logger = get_custom_logger(__name__)
+
+
+class TestDosRobustness(StepsDataAvailability):
+    main_nodes = []
+
+    def test_spam_protection_data_uploads(self):
+        delay(5)
+        successful_dispersals = 0
+        for i in range(1000):
+            try:
+                self.disperse_data(DATA_TO_DISPERSE[0], to_app_id(1), to_index(0))
+                successful_dispersals = i
+            except Exception as ex:
+                logger.debug(f"Dispersal #{i} was not successful with error {ex}")
+                break
+
+        assert successful_dispersals < 1000, "More than 1000 consecutive dispersals were successful without any constraint"