Function describeResetProp

packages/core/src/SpringValue.test.ts:276–310

()

}

function describeResetProp() {
  describe('when "reset" prop is true', () => {
    it('calls "onRest" before jumping back to its "from" value', async () => {
      const onRest = vi.fn((result: any) => {
        expect(result.value).not.toBe(0)
      })

      const spring = new SpringValue({ from: 0, to: 1, onRest })
      global.mockRaf.step()

      spring.start({ reset: true })

      expect(onRest).toHaveBeenCalled()
      expect(spring.get()).toBe(0)
    })

    it('resolves the "start" promise with (finished: false)', async () => {
      const spring = new SpringValue<number>()
      const promise = spring.start({ from: 0, to: 1 })
      await global.advance(5)
      spring.start({ reset: true })
      const result = await promise
      expect(result.finished).toBe(false)
    })

    it('calls the "onRest" prop with (finished: false)', async () => {
      const onRest = vi.fn()
      const spring = new SpringValue({ from: 0, to: 1, onRest })
      await global.advance(5)
      spring.start({ reset: true })
      expect(onRest).toBeCalledTimes(1)
      expect(onRest.mock.calls[0][0]).toMatchObject({ finished: false })
    })
  })
}

function describeDefaultProp() {
  // The hook API always uses { default: true } for render-driven updates.