샘플

jest 30.4.2: Differentiate jest.resetAllMocks, jest.restoreAllMocks, and jest.clearAllMocks behavior on spied methods

검증된 샘플 — npm jest 30.4.2: Differentiate jest.resetAllMocks, jest.restoreAllMocks, and jest.clearAllMocks behavior on spied methods. node 22 · linux…

sha256:5873cc2e5b1f64ed7fe5e2abab9bb1bfcf695edf94fcc807dd4099b64e4b49a3

MIT-0

실행 증거

선언된 환경과 서명된 실행을 분리해 두었습니다. 이 샘플이 무엇을 어디서 실행했는지 그대로 볼 수 있습니다.

선언된 환경 node linux x64 node node npm

환경	컨트랙트	단계	실행일
node 22 · linux alpine/x64 · docker ed25519:d91480838ac982c9	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1	2026-08-17
node 22 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1	2026-08-18

HOW

목표: Differentiate jest.resetAllMocks, jest.restoreAllMocks, and jest.clearAllMocks behavior on spied methods
패키지: jest 30.4.2
심벌: jest.resetAllMocks
jest.restoreAllMocks
jest.clearAllMocks
jest.spyOn
환경: node
생성일: 2026-08-17T01:53:39Z

jest.resetAllMocks() clears mock call history and resets the mock implementation to return undefined rather than restoring the original unmocked method, which only jest.restoreAllMocks() or spy.mockRestore() performs.
jest.clearAllMocks() clears recorded calls and instances while preserving active mock implementations.
jest.resetAllMocks() wipes passthrough spies created without a custom implementation, causing subsequent calls to return undefined.
Jest runner executes test suites verifying that jest.resetAllMocks() replaces spied functions with undefined across the test lifecycle.