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delta-upgrade CLI_VERSION mocks

Category: gotcha

Confidence: 1.00

ID: 01a0867e-7e00-78cc-9d6c-29f1d8f1dcdf

Project ID: c760f4f9-42b0-4ce0-b36d-6b8c38d770b2

Cross-project: No

Recalled in other projects: 0

Source session: 1W0vc18fUQ99w7CwT

Created: 2026-09-09 14:07:11

Updated: 2026-09-09 14:07:11

Content

Trap: statically mocking CLI_VERSION inside delta-upgrade.test.ts looks simpler, but it reverses that file’s dev-build assumptions and contaminates tests through the module graph. Fix: keep stable-version orchestration tests in a sibling isolated file, or use vi.resetModules() plus vi.doMock() before dynamic import and always doUnmock()/reset afterward.