1const chai = require("chai");
 2const path = require("path");
 3
 4const Fr = require("ffjavascript").bn128.Fr;
 5const tester = require("circom").tester;
 6
 7const babyJub = require("../src/babyjub.js");
 8
 9const PBASE =
10    [
11        [Fr.e("7688621503272331394947188562469131124099290577812125474996268020905176040083"),Fr.e("6637287939860384587467947982369268811366630904563077767287326262235485629411")],
12        [Fr.e("11549681895645637778324638856880330712650895608496649854094912415387988201330"),Fr.e("5771732722784528537721081267383956005090479808901717812009343940574217488577")],
13        [Fr.e("18790245153471844934157747708238883966079935875787657036767664036124524381945"),Fr.e("18300275459419441151064576487317481499516933849631632883767173501999997278432")],
14        [Fr.e("16301069151422548986850494139112207641738464387919729729324473657161689764196"),Fr.e("8215273507373494014441104012907835625670941526105528197815397741007626226499")],
15        [Fr.e("12597665704678284488008395353749282149622295037737374782196049599390683534185"),Fr.e("4072455241781501621593714139281767473040087753548015968773801065193764079468")]
16    ];
17
18describe("Double Pedersen test", function() {
19    let circuit;
20    this.timeout(100000);
21    before( async() => {
22
23        circuit = await tester(path.join(__dirname, "circuits", "pedersen_test.circom"));
24
25    });
26    it("Should pedersen at zero", async () => {
27
28        let w;
29
30        w = await circuit.calculateWitness({ in: ["0", "0"]}, true);
31
32        await circuit.assertOut(w, {out: [0,1]});
33
34    });
35    it("Should pedersen at one first generator", async () => {
36        let w;
37
38        w = await circuit.calculateWitness({ in: ["1", "0"]}, true);
39
40        await circuit.assertOut(w, {out: PBASE[0]});
41
42    });
43    it("Should pedersen at one second generator", async () => {
44        let w;
45
46        w = await circuit.calculateWitness({ in: ["0", "1"]}, true);
47
48        await circuit.assertOut(w, {out: PBASE[1]});
49
50    });
51    it("Should pedersen at mixed generators", async () => {
52        let w;
53        w = await circuit.calculateWitness({ in: ["3", "7"]}, true);
54
55        const r = babyJub.addPoint(
56            babyJub.mulPointEscalar(PBASE[0], 3),
57            babyJub.mulPointEscalar(PBASE[1], 7)
58        );
59
60        await circuit.assertOut(w, {out: r});
61
62    });
63    it("Should pedersen all ones", async () => {
64        let w;
65
66        const allOnes = Fr.sub(Fr.shl(Fr.e("1"), Fr.e(250)), Fr.e("1"));
67        w = await circuit.calculateWitness({ in: [allOnes, allOnes]}, true);
68
69
70        const r2 = babyJub.addPoint(
71            babyJub.mulPointEscalar(PBASE[0], allOnes),
72            babyJub.mulPointEscalar(PBASE[1], allOnes)
73        );
74
75        await circuit.assertOut(w, {out: r2});
76    });
77});