sdk-monorepo/test/crypto.test.ts

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import chai from 'chai'
import { solidity } from 'ethereum-waffle'
import { BigNumber } from 'ethers'
import { Primitives } from '@tornado/sdk-crypto'
chai.use(solidity)
const expect = chai.expect
describe('crypto', () => {
describe('namespace Crypto', () => {
describe('namespace Primitives', () => {
it('createDeposit', () => {
const deposit = Primitives.createDeposit()
// @ts-ignore
const limit = BigNumber.from(2).pow(248).sub(1)
expect(deposit.nullifier).to.exist
expect(deposit.secret).to.exist
expect(deposit.preimage).to.exist
expect(deposit.commitment).to.exist
expect(deposit.hexCommitment).to.exist
expect(deposit.hexNullifierHash).to.exist
// From the whitepaper, the nullifier k E B^248
expect(BigNumber.from(deposit.nullifier.toString())).to.be.lte(limit)
// From the whitepaper, the randomness r E B^248
expect(BigNumber.from(deposit.secret.toString())).to.be.lte(limit)
})
it('parseNote', () => {
const deposit = Primitives.createDeposit()
const note = Primitives.createNote(deposit.preimage)
const parsed = Primitives.parseNote(note)
expect(parsed.hexCommitment).to.equal(deposit.hexCommitment)
})
})
})
})