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useTestConfigDir isolateProjectRoot

Category: gotcha

Confidence: 1.00

ID: 01a0a06d-067e-7934-9cab-a8603cac10f0

Project ID: 6f4be9ff-ed84-4cca-a9e7-732a0b0b8677

Cross-project: No

Recalled in other projects: 0

Source session: 0IxrNA1DXwHaouNJs

Created: 2026-09-14 14:58:14

Updated: 2026-09-14 14:58:14

Content

Trap: using useTestConfigDir(prefix) looks isolated, but resolveOrg, detectDsn, or findProjectRoot can walk upward from .test-tmp, discover the real repository .git, scan source for Sentry DSNs, and trigger mocked network calls or 5-second timeouts. Fix: always use useTestConfigDir(prefix, { isolateProjectRoot: true }) for such paths; its temporary .git stops upward traversal.