chore: import upstream snapshot with attribution

tests/unittests/evaluation/test__path_validation.py

@@ -0,0 +1,52 @@
+# Copyright 2026 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.
+
+from __future__ import annotations
+
+from google.adk.evaluation._path_validation import validate_path_segment
+import pytest
+
+
+@pytest.mark.parametrize(
+    "value", ["eval_set_1", "my-app", "App Name 1", "résumé", "a.b.c"]
+)
+def test_validate_path_segment_accepts_valid_value(value):
+  validate_path_segment(value, "field")
+
+
+def test_validate_path_segment_rejects_empty():
+  with pytest.raises(ValueError, match="must not be empty"):
+    validate_path_segment("", "field")
+
+
+def test_validate_path_segment_rejects_null_byte():
+  with pytest.raises(ValueError, match="must not contain null bytes"):
+    validate_path_segment("foo\x00bar", "field")
+
+
+@pytest.mark.parametrize("value", ["foo/bar", "foo\\bar", "/", "\\"])
+def test_validate_path_segment_rejects_path_separators(value):
+  with pytest.raises(ValueError, match="must not contain path separators"):
+    validate_path_segment(value, "field")
+
+
+@pytest.mark.parametrize("value", [".", ".."])
+def test_validate_path_segment_rejects_traversal_segments(value):
+  with pytest.raises(ValueError, match="must not contain traversal segments"):
+    validate_path_segment(value, "field")
+
+
+def test_validate_path_segment_includes_field_name_in_error():
+  with pytest.raises(ValueError, match="eval_set_id"):
+    validate_path_segment("", "eval_set_id")