archive-monorepo/@tornado/circomlib/test/mimccircuit.js

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const chai = require("chai");
const path = require("path");
const snarkjs = require("@tornado/snarkjs");
const compiler = require("circom");
const mimcjs = require("../src/mimc7.js");
const assert = chai.assert;
describe("MiMC Circuit test", function () {
let circuit;
this.timeout(100000);
before( async () => {
const cirDef = await compiler(path.join(__dirname, "circuits", "mimc_test.circom"));
circuit = new snarkjs.Circuit(cirDef);
console.log("MiMC constraints: " + circuit.nConstraints);
});
it("Should check constrain", async () => {
const w = circuit.calculateWitness({x_in: 1, k: 2});
const res = w[circuit.getSignalIdx("main.out")];
const res2 = mimcjs.hash(1,2,91);
assert.equal(res.toString(), res2.toString());
assert(circuit.checkWitness(w));
});
});