Add test to validate version of package

tests/docs/test_version.py

@@ -0,0 +1,27 @@
+# Copyright (c) 2026 Intel Corporation
+# 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 re
+from pathlib import Path
+
+NNCF_VERSION_FILE = "src/nncf/version.py"
+
+
+def test_nncf_version():
+    # Validate format of version
+    # Needed while src/custom_version.py exists
+    version = re.search(r"^__version__ = ['\"](.*)['\"]", Path(NNCF_VERSION_FILE).read_text(), re.M)
+    assert version, f"Cannot find version in {NNCF_VERSION_FILE}"
+    version_str = version.group(1)
+    version_pattern = r"^\d\.\d{1,2}\.\d{1,2}$"  # e.g., "3.0.0"
+    assert re.match(version_pattern, version_str), (
+        f"NNCF version '{version}' in {NNCF_VERSION_FILE} does not match the expected pattern."
+    )