1const chai = require("chai");
 2const path = require("path");
 3const snarkjs = require("snarkjs");
 4const compiler = require("circom");
 5
 6const assert = chai.assert;
 7
 8const bigInt = snarkjs.bigInt;
 9
10function print(circuit, w, s) {
11    console.log(s + ": " + w[circuit.getSignalIdx(s)]);
12}
13
14function getBits(v, n) {
15    const res = [];
16    for (let i=0; i<n; i++) {
17        if (v.shr(i).isOdd()) {
18            res.push(bigInt.one);
19        } else {
20            res.push(bigInt.zero);
21        }
22    }
23    return res;
24}
25
26const q = bigInt("21888242871839275222246405745257275088548364400416034343698204186575808495617");
27
28describe("Aliascheck test", () => {
29    let circuit;
30    before( async() => {
31        const cirDef = await compiler(path.join(__dirname, "circuits", "aliascheck_test.circom"));
32
33        circuit = new snarkjs.Circuit(cirDef);
34
35        console.log("NConstrains: " + circuit.nConstraints);
36    });
37
38    it("Satisfy the aliastest 0", async () => {
39        const inp = getBits(bigInt.zero, 254);
40        circuit.calculateWitness({in: inp});
41    });
42
43    it("Satisfy the aliastest 3", async () => {
44        const inp = getBits(bigInt(3), 254);
45        circuit.calculateWitness({in: inp});
46    });
47
48    it("Satisfy the aliastest q-1", async () => {
49        const inp = getBits(q.sub(bigInt.one), 254);
50        circuit.calculateWitness({in: inp});
51    });
52
53    it("Nhot not satisfy an input of q", async () => {
54        const inp = getBits(q, 254);
55        try {
56            circuit.calculateWitness({in: inp});
57            assert(false);
58        } catch(err) {
59            assert(/Constraint\sdoesn't\smatch(.*)1\s!=\s0/.test(err.message) );
60        }
61    });
62
63    it("Nhot not satisfy all ones", async () => {
64
65        const inp = getBits(bigInt(1).shl(254).sub(bigInt(1)), 254);
66        try {
67            circuit.calculateWitness({in: inp});
68            assert(false);
69        } catch(err) {
70            assert(/Constraint\sdoesn't\smatch(.*)1\s!=\s0/.test(err.message) );
71        }
72    });
73
74});