## Summary `Find_TwoPathfindsOverlappingChunks_PromoteToBuildOnSecondFind` fails intermittently in CI with `second Find through overlapping chunks must promote (got 0 builds)`. **Cause:** `SecondTouchAfterWindow_RestartsTheCount` and `TwoFindsAcrossTheWindow_DoNotPromote` set `StepCache.Instance.MissPromotionWindowMs = 1` and never restore it, and `Clear()` does not reset it. Both classes share the `Sequential Pathfinding Tests` collection, so when a lifecycle test runs first, the promotion test's two Finds have to land within 1 ms of each other. On Linux, `Environment.TickCount` moves in coarse steps of several ms, so even a sub-millisecond test can see the window lapse. The second Find then restarts the miss count instead of promoting. On Windows the ~15.6 ms tick nearly always reads the same value for both Finds, which is why it didn't reproduce locally. **Fix (tests only):** - `StepCacheLifecycleTests` implements `IDisposable` and restores the window after each test. - The promotion test sets the window it depends on (30 s) instead of inheriting it. ## Test plan - [x] Reproduced deterministically: with a temporary 20 ms sleep between the two Finds, the test fails whenever the lifecycle tests run first and passes when run alone - [x] With the sleep still in, the test passes with the Dispose restore alone and with both fixes - [x] All pathfinding tests pass (123/123) with the sleep removed |
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| Application | ||
| BuildTool | ||
| Logger | ||
| Server | ||
| Server.Tests | ||
| UOContent | ||
| UOContent.Tests | ||