1 files changed, 73 insertions, 0 deletions
diff --git a/projects/g-api-python-cloud-core/fuzz_helpers.py b/projects/g-api-python-cloud-core/fuzz_helpers.py
new file mode 100644
index 00000000..dfaa4eab
--- /dev/null
+++ b/projects/g-api-python-cloud-core/fuzz_helpers.py
@@ -0,0 +1,73 @@
+#!/usr/bin/python3
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import atheris
+import sys
+import json
+
+# We instrument all functions when initiating atheris
+from google.cloud import _helpers
+
+def TestOneInput(data):
+  if len(data) < 100:
+    return
+
+  fdp = atheris.FuzzedDataProvider(data)
+  try:
+    loaded_data = json.loads(fdp.ConsumeString(300))
+    success = True
+  except Exception:
+    success = False
+
+  if success:
+    try:
+      _helpers._ensure_tuple_or_list(loaded_data)
+    except TypeError:
+      pass
+
+  try:
+    _helpers._bytes_to_unicode(data)
+  except ValueError:
+    pass
+
+  fdp = atheris.FuzzedDataProvider(data)
+  try:
+    _helpers._time_from_iso8601_time_naive(fdp.ConsumeString(100))
+  except ValueError:
+    pass
+
+  fdp = atheris.FuzzedDataProvider(data)
+  try:
+    _helpers._rfc3339_nanos_to_datetime(fdp.ConsumeString(100))
+  except ValueError:
+    pass
+
+  fdp = atheris.FuzzedDataProvider(data)
+  try:
+    _helpers._name_from_project_path(
+      fdp.ConsumeString(60),
+      fdp.ConsumeString(60),
+      fdp.ConsumeString(60)
+    )
+  except ValueError:
+    pass
+
+def main():
+  atheris.instrument_all()
+  atheris.Setup(sys.argv, TestOneInput, enable_python_coverage=True)
+  atheris.Fuzz()
+
+if __name__ == "__main__":
+  main()