test: add version test module

tests/unit/starbase/test_init.py

@@ -22,10 +22,6 @@
 from pytest_mock import MockerFixture
 
 
-def test_version():
-    assert starcraft.__version__ is not None
-
-
 def test_hello(mocker: MockerFixture):
     mock_print = mocker.patch("builtins.print")
 

tests/unit/starbase/test_version.py

@@ -0,0 +1,52 @@
+# This file is part of starcraft.
+#
+# Copyright 2026 Canonical Ltd.
+#
+# This program is free software: you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 3, as published
+# by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranties of MERCHANTABILITY,
+# SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""Basic tests for Starbase version attributes."""
+
+import re
+
+import pytest
+import starcraft
+
+
+@pytest.fixture
+def get_major_minor_version():
+    """Fixture function that duplicates version trimming in docs/conf.py."""
+
+    def _trim(version: str) -> str:
+        match = re.match(r"\d+\.\d+", version)
+        assert match is not None
+
+        return match.group()
+
+    return _trim
+
+
+def test_version():
+    """Test that the version attribute is generating."""
+    assert starcraft.__version__ is not None
+
+
+@pytest.mark.parametrize(
+    ("version", "major_minor"),
+    [
+        ("9.0.0", "9.0"),  # Tagged
+        ("9.0.0-23-gc2a9d6349", "9.0"),  # Tagged + new commits
+        ("0.0.post836+g494e37055.d20260612", "0.0"),  # Untagged
+    ],
+)
+def test_version_major_minor(version, major_minor, get_major_minor_version):
+    """Test the version-to-major-minor function."""
+    assert get_major_minor_version(version) == major_minor