1 files changed, 31 insertions, 0 deletions
diff --git a/tools/tryselect/test/test_auto.py b/tools/tryselect/test/test_auto.py
new file mode 100644
index 0000000000..63f0fe6bd7
--- /dev/null
+++ b/tools/tryselect/test/test_auto.py
@@ -0,0 +1,31 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import mozunit
+import pytest
+from tryselect.selectors.auto import AutoParser
+
+
+def test_strategy_validation():
+    parser = AutoParser()
+    args = parser.parse_args(["--strategy", "relevant_tests"])
+    assert args.strategy == "gecko_taskgraph.optimize:tryselect.relevant_tests"
+
+    args = parser.parse_args(
+        ["--strategy", "gecko_taskgraph.optimize:experimental.relevant_tests"]
+    )
+    assert args.strategy == "gecko_taskgraph.optimize:experimental.relevant_tests"
+
+    with pytest.raises(SystemExit):
+        parser.parse_args(["--strategy", "gecko_taskgraph.optimize:tryselect"])
+
+    with pytest.raises(SystemExit):
+        parser.parse_args(["--strategy", "foo"])
+
+    with pytest.raises(SystemExit):
+        parser.parse_args(["--strategy", "foo:bar"])
+
+
+if __name__ == "__main__":
+    mozunit.main()