1const chai = require("chai");
 2const path = require("path");
 3
 4const tester = require("circom").tester;
 5
 6const bigInt = require("big-integer");
 7
 8const assert = chai.assert;
 9
10describe("Binary sum test", function () {
11
12    this.timeout(100000000);
13
14    it("Should create a constant circuit", async () => {
15        const circuit = await tester(path.join(__dirname, "circuits", "constants_test.circom"));
16        await circuit.loadConstraints();
17
18        assert.equal(circuit.nWires, 2);
19
20        const witness = await circuit.calculateWitness({ "in": bigInt("d807aa98", 16)});
21
22        assert(witness[0].equals(bigInt(1)));
23        assert(witness[1].equals(bigInt("d807aa98", 16)));
24    });
25    it("Should create a sum circuit", async () => {
26        const circuit = await tester(path.join(__dirname, "circuits", "sum_test.circom"));
27        await circuit.loadConstraints();
28
29        assert.equal(circuit.nWires, 97);  // 32 (in1) + 32(in2) + 32(out) + 1 (carry)
30
31        const witness = await circuit.calculateWitness({ "a": "111", "b": "222" });
32
33        assert(witness[0].equals(bigInt(1)));
34        assert(witness[1].equals(bigInt("333")));
35    });
36});