auto_save_writes_after_30_seconds intermittently failed under
heavy parallel cargo-test load. Two contributing factors, both
fixable in test fixtures alone:
1. GamePlugin::build() reads dirs::data_dir()/.../game_state.json
before per-test resource overrides apply. If a real
game_state.json exists on the dev machine, it's loaded into
PendingRestoredGame, and auto_save_game_state's pending guard
(`pending.0.is_some()`) silently skips the save. test_app now
resets PendingRestoredGame(None) after plugin build so the
production save state can't leak into per-test world state.
2. Time::delta_secs() on the first MinimalPlugins frame can be
0.0 (nominal) or, under cargo-test parallelism, large enough
to consume the 0.1 s pre-seeded margin past the threshold.
The test now re-arms AutoSaveTimer(AUTO_SAVE_INTERVAL_SECS +
1.0) every iteration in a 16-frame bounded loop, breaking
the moment the file appears. Robust against first-frame Time
variance with no behaviour-contract change.
No production-code change. Verified: 3 back-to-back single-test
runs all pass. Full workspace test suite: 1170 passing / 0 failing.
cargo clippy --workspace --all-targets -- -D warnings clean.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
funman300
91b7605b9f