시간을 표시하는 React Component의 스냅샷 테스트는 Giithub actions에서만 수행됩니다.

현상.

// 2022/3/8
const date = props.date.toLocaleDateString()
// 18:39:04
const time = props.date.toLocaleTimeString()

  const time: Date = new Date(1647165901000)
  const { asFragment } = render(
    <Component
      time={time}
    />,
  )
  expect(asFragment()).toMatchSnapshot()

    Snapshot name: `時刻を表示させるcomponentのテスト`

    - Snapshot  - 1
    + Received  + 1

    @@ -100,11 +100,11 @@
    -                 2022/3/8 18:39:04   NG
    +                 3/8/2022 09:39:04 AM  NG

대책

// const time: Date = new Date(1647165901000)
const time: Date = new Date(
  1647165901000
  + (new Date().getTimezoneOffset() + 9 * 60) * 60 * 1000)
) 

// 2022/3/8
// const date = props.date.toLocaleDateString()
const date = props.date.toLocaleDateString('ja-JP')
// 18:39:04
// const time = props.date.toLocaleTimeString()
const time = props.date.toLocaleTimeString('ja-JP', {hour12: false})