NODE async testing

describe('POST /users', (done) => {
    it('should create a user', async () => {
        const email = 'examplee@example.com'
        const username = 'jpancakee'
        const password = '123mnb!'

        const res = await app
            .post('/users/register')
            .send({ username, email, password })
        expect(res).to.have.status(200)
        expect(res).to.have.header('x-auth')
        expect(res.body._id).to.exist
        expect(res.body.email).to.eql(email)
        try {
            const user = await User.findOne({ email })
            expect(user).exist
            expect(user.password).to.not.eql(password)
        } catch (e) {
            done(e)
        }
    })
})

I'm trying to do some async testing but done is not working correctly? im using mocha chai and chai-http. So the test passes as is but if I emulate an error in the try block lets say to .to.eql(password) it gives me the error

done is not a function. 

What I expect is for the test to catch the error and throw it to done so it can display the error in the console.

any help will be appreciated :) thanks!