db.unit.test.js

const dbController = require('../../src/controller/dbController')

describe('DB methohds test', () => {
  it('returns a user from DB by email', async () => {
    const user = await dbController.getUserByEmail('litehon958@whipjoy.com')
    expect(user).not.toBeNull()
  })
  it('returns a null user', async () => {
    const user = await dbController.getUserByEmail('jondoe@nowhere.com') // a non-exist user
    expect(user).toBeNull()
  })

  it("returns a user's email", async () => {
    const email = await dbController.getUserEmailById(1)
    expect(email).not.toBeNull()
  })
  it("returns null instead of a user's email", async () => {
    const email = await dbController.getUserEmailById(1005) // no user has this ID
    expect(email).toBeNull()
  })

  it('returns null from DB by token', async () => {
    const user = await dbController.getUserByToken('12345678') // unvalid token
    expect(user).toBeNull() // for valid token = expect(user).not.toBeNull()
  })

  it("returns a user's verification token, if any", async () => {
    const token = await dbController.getVerificationTokenByUserId(1)
    expect(token).toBeNull()
  })

  it("returns a user's ID, if any", async () => {
    const token = await dbController.getUserIdByVerificationToken('12345678') // unvalid token
    expect(token).toBeNull() // for valid token = expect(user).not.toBeNull()
  })

  it("returns a user's GitLab_ID, if any", async () => {
    const id = await dbController.getGitlabId(1)
    expect(id).not.toBeNull()
  })

  it('checks user email', async () => {
    const user = await dbController.checkUserEmail('litehon958@whipjoy.com')
    expect(user).not.toBeNull()
  })
  it('checks user email and return null', async () => {
    const user = await dbController.checkUserEmail('jondoe@nowhere.com') // a non-exist user
    expect(user).toBeNull()
  })
})