import { Scrypt, ScryptParams } from '../src/key-derivation-functions/scrypt'
import { ScryptParamsT } from '../src/key-derivation-functions/_types'

describe('scrypt', () => {
	it('returns underlying error', async done => {
		const scryptParams: ScryptParamsT = ScryptParams.create({})
		const passwordString = 'my super secret password'
		const passwordBuffer = Buffer.from(passwordString)

		await Scrypt.deriveKey({
			password: passwordBuffer,
			kdf: 'scrypt',
			params: {
				...scryptParams,
				costParameterN: 3, // not a multiple of 2, will cause error
			},
		}).match(
			k => done(new Error('Expected error but got none.')),
			e => {
				const expectedError = `Failed to derive data using scrypt, underlying error: 'N must be power of 2'`
				expect(e.message).toBe(expectedError)
				done()
			},
		)
	})
})