prismaMock not mocking the resolved data

[flacial]

I'm trying to use prismaMock to mock the findFirst method resolved data. The resolved data is null even though I choose it to be { id: 1 }.

Update 1: It seems Prisma wasn't mocked and null was being returned because I had the database docker instance running. So, prisma is auto mocked or I should do something specific to mock it?

Test code:

    it('Should redirect to /curriculum when user is found', async () => {
      const user = {
        username: 'fakeUser',
        password: 'fakePassword'
      }
      prismaMock.user.findFirst.mockResolvedValue(user)

      userMiddleware.mockImplementation((req, _res, next) => {
        req.user = null
        next()
      })

      const signInCallback = signIn(req, res)

      const value = await signInCallback({
        account: {
          provider: 'discord'
        },
        user: {
          id: '123'
        }
      })

      expect(value).toBe('/curriculum')
    })

The function being tested:

export const signIn =
  (req: LoggedRequest & Request, res: NextApiResponse & Response) =>
  async ({ account, user }: { account: Account; user: User }) => {
    const { provider } = account

    if (provider === 'discord') {
      const c0d3User = await getUserSession(req, res)
      const { access_token, expires_at, refresh_token } = account

      // Connect to discord
      if (c0d3User?.id) {
        await updateRefreshandAccessTokens(
          c0d3User.id,
          user.id,
          refresh_token!,
          access_token!,
          new Date(expires_at! * 1000)
        )

        // Cancel auth flow. Session won't be created
        return '/discord/success'
      }

      const userInfo = await prisma.user.findFirst({
        where: {
          discordId: user.id
        }
      })

      if (userInfo) {
        req.session.userId = userInfo.id

        // Cancel auth flow. Session won't be created
        return '/curriculum'
      }
      return '/discord/404user'
    }

    return true
  }

[flacial]

prismaMock has to be imported before importing the functions that use prisma.