chore: filter warning about gencode version being one version older

Signed-off-by: Matthias Wende <[email protected]>

Author: matthias-wende-frequenz

pyproject.toml

@@ -171,11 +171,22 @@ disable = [
 ]
 
 [tool.pytest.ini_options]
-addopts = "-W=all -Werror -Wdefault::DeprecationWarning -Wdefault::PendingDeprecationWarning -vv"
+addopts = "-vv"
 testpaths = ["tests", "src"]
 asyncio_default_fixture_loop_scope = "function"
 asyncio_mode = "auto"
 required_plugins = ["pytest-asyncio", "pytest-mock"]
+filterwarnings = [
+  "error",
+  "once::DeprecationWarning",
+  "once::PendingDeprecationWarning",
+  # We ignore warnings about protobuf gencode version being one version older
+  # than the current version, as this is supported by protobuf, and we expect to
+  # have such cases. If we go too far, we will get a proper error anyways.
+  # We use a raw string (single quotes) to avoid the need to escape special
+  # characters as this is a regex.
+  'ignore:Protobuf gencode version .*exactly one major version older.*:UserWarning',
+]
 
 [tool.mypy]
 explicit_package_bases = true