[Metrics] Add --show-hidden-metrics-for-version CLI arg (#13295)

tests/test_version.py

@@ -0,0 +1,36 @@
+# SPDX-License-Identifier: Apache-2.0
+
+from unittest.mock import patch
+
+import pytest
+
+from vllm import version
+
+
+def test_version_is_defined():
+    assert version.__version__ is not None
+
+
+def test_version_tuple():
+    assert len(version.__version_tuple__) in (3, 4, 5)
+
+
+@pytest.mark.parametrize(
+    "version_tuple, version_str, expected",
+    [
+        ((0, 0, "dev"), "0.0", True),
+        ((0, 0, "dev"), "foobar", True),
+        ((0, 7, 4), "0.6", True),
+        ((0, 7, 4), "0.5", False),
+        ((0, 7, 4), "0.7", False),
+        ((1, 2, 3), "1.1", True),
+        ((1, 2, 3), "1.0", False),
+        ((1, 2, 3), "1.2", False),
+        # This won't work as expected
+        ((1, 0, 0), "1.-1", True),
+        ((1, 0, 0), "0.9", False),
+        ((1, 0, 0), "0.17", False),
+    ])
+def test_prev_minor_version_was(version_tuple, version_str, expected):
+    with patch("vllm.version.__version_tuple__", version_tuple):
+        assert version._prev_minor_version_was(version_str) == expected