Add a test for _find_app_root()

Author: Ickerday

tests/unit/searchcommands/test_environment.py

@@ -0,0 +1,37 @@
+# Copyright © 2011-2026 Splunk, Inc.
+#
+# 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 os
+
+import pytest
+
+from splunklib.searchcommands.environment import (
+    _find_app_root,  # pyright: ignore[reportPrivateUsage]
+)
+
+
+@pytest.mark.parametrize(
+    ("app_file_parts", "expected_app_root_parts"),
+    [
+        (("apps", "my_app", "bin", "command.py"), ("apps", "my_app")),
+        (("apps", "my_app", "bin", "linux_x86_64", "command.py"), ("apps", "my_app")),
+        (("apps", "my_app", "bin", "foo", "bar", "command.py"), ("apps", "my_app")),
+        (("some", "other", "layout", "command.py"), ("some", "other")),
+    ],
+)
+def test_find_app_root(
+    app_file_parts: tuple[str, ...], expected_app_root_parts: tuple[str, ...]
+) -> None:
+    app_file = os.path.join(*app_file_parts)
+    assert _find_app_root(app_file) == os.path.abspath(os.path.join(*expected_app_root_parts))