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Rule priority, scope & exceptions
Use this to align rules with the senior-level structure (P0/P1/P2, scope, exceptions/tradeoffs).
backend ruleP2universalStack: Jest
testingmocksclean-code
Use the simplest mock form in tests
Prefer mockReturnValue over mockImplementation when you only return a value, and drop unnecessary Promise.resolve wrappers and redundant mockClear calls.
PR: vinify-backend · org-mining-hist-2026-06Created: Jun 19, 2026
Bad example
Old codetypescript
| 1 | repo.findByPk.mockImplementation(() => Promise.resolve({ id: 1, vintages: [{ vintage: 2, id: 3 }] })); |
Explanation (EN)
Objašnjenje (HR)
Good example
New codetypescript
| 1 | repo.findByPk.mockResolvedValue({ id: 1, vintages: [{ vintage: 2, id: 3 }] }); |
Explanation (EN)
Objašnjenje (HR)