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/*
This file is part of GNU Taler
(C) 2021 Taler Systems S.A.
GNU Taler is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* Imports.
*/
import test from "ava";
import { initNodePrng } from "./prng-node.js";
import { ContractTermsUtil } from "./contract-terms.js";
// Since we import nacl-fast directly (and not via index.node.ts), we need to
// init the PRNG manually.
initNodePrng();
test("contract terms canon hashing", (t) => {
const cReq = {
foo: 42,
bar: "hello",
$forgettable: {
foo: true,
},
};
const c1 = ContractTermsUtil.saltForgettable(cReq);
const c2 = ContractTermsUtil.saltForgettable(cReq);
t.assert(typeof cReq.$forgettable.foo === "boolean");
t.assert(typeof c1.$forgettable.foo === "string");
t.assert(c1.$forgettable.foo !== c2.$forgettable.foo);
const h1 = ContractTermsUtil.hashContractTerms(c1);
const c3 = ContractTermsUtil.scrub(JSON.parse(JSON.stringify(c1)));
t.assert(c3.foo === undefined);
t.assert(c3.bar === cReq.bar);
const h2 = ContractTermsUtil.hashContractTerms(c3);
t.deepEqual(h1, h2);
});
test("contract terms canon hashing (nested)", (t) => {
const cReq = {
foo: 42,
bar: {
prop1: "hello, world",
$forgettable: {
prop1: true,
},
},
$forgettable: {
bar: true,
},
};
const c1 = ContractTermsUtil.saltForgettable(cReq);
t.is(typeof c1.$forgettable.bar, "string");
t.is(typeof c1.bar.$forgettable.prop1, "string");
const forgetPath = (x: any, s: string) =>
ContractTermsUtil.forgetAll(x, (p) => p.join(".") === s);
// Forget bar first
const c2 = forgetPath(c1, "bar");
// Forget bar.prop1 first
const c3 = forgetPath(forgetPath(c1, "bar.prop1"), "bar");
// Forget everything
const c4 = ContractTermsUtil.scrub(c1);
const h1 = ContractTermsUtil.hashContractTerms(c1);
const h2 = ContractTermsUtil.hashContractTerms(c2);
const h3 = ContractTermsUtil.hashContractTerms(c3);
const h4 = ContractTermsUtil.hashContractTerms(c4);
t.is(h1, h2);
t.is(h1, h3);
t.is(h1, h4);
// Doesn't contain salt
t.false(ContractTermsUtil.validateForgettable(cReq));
t.true(ContractTermsUtil.validateForgettable(c1));
t.true(ContractTermsUtil.validateForgettable(c2));
t.true(ContractTermsUtil.validateForgettable(c3));
t.true(ContractTermsUtil.validateForgettable(c4));
});
test("contract terms reference vector", (t) => {
const j = {
k1: 1,
$forgettable: {
k1: "SALT",
},
k2: {
n1: true,
$forgettable: {
n1: "salt",
},
},
k3: {
n1: "string",
},
};
const h = ContractTermsUtil.hashContractTerms(j);
t.deepEqual(
h,
"VDE8JPX0AEEE3EX1K8E11RYEWSZQKGGZCV6BWTE4ST1C8711P7H850Z7F2Q2HSSYETX87ERC2JNHWB7GTDWTDWMM716VKPSRBXD7SRR",
);
});
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