Added fuzzer to be run with OSS-Fuzz

1 files changed, 35 insertions, 0 deletions

diff --git a/jsonschema/tests/fuzz_validate.py b/jsonschema/tests/fuzz_validate.py
new file mode 100644
index 0000000..eb1a3d3
--- /dev/null
+++ b/jsonschema/tests/fuzz_validate.py
@@ -0,0 +1,35 @@
+import os
+import sys
+import atheris
+
+import jsonschema
+from hypothesis import given, strategies as st
+
+PRIM = st.one_of(
+    st.booleans(),
+    st.integers(min_value=-(2 ** 63), max_value=2 ** 63 - 1),
+    st.floats(allow_nan=False, allow_infinity=False),
+    st.text(),
+)
+DICT = st.recursive(
+    base=st.dictionaries(st.text(), PRIM),
+    extend=lambda inner: st.dictionaries(st.text(), inner),
+)
+
+@given(obj1=DICT, obj2=DICT)
+def test_schemas(obj1, obj2):
+    try:
+        jsonschema.validate(instance=obj1, schema=obj2)
+    except jsonschema.exceptions.ValidationError:
+        None
+    except jsonschema.exceptions.SchemaError:
+        None
+
+def main():
+    atheris.Setup(sys.argv,
+                  test_schemas.hypothesis.fuzz_one_input,
+                  enable_python_coverage=True)
+    atheris.Fuzz()
+
+if __name__ == "__main__":
+    main()