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/*
This file is part of GNU Taler
(C) 2020 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/>
*/
import test from "ava";
import { Amounts, AmountJson, amountMaxValue } from "./amounts.js";
const jAmt = (
value: number,
fraction: number,
currency: string,
): AmountJson => ({ value, fraction, currency });
const sAmt = (s: string): AmountJson => Amounts.parseOrThrow(s);
test("amount addition (simple)", (t) => {
const a1 = jAmt(1, 0, "EUR");
const a2 = jAmt(1, 0, "EUR");
const a3 = jAmt(2, 0, "EUR");
t.true(0 === Amounts.cmp(Amounts.add(a1, a2).amount, a3));
t.pass();
});
test("amount addition (saturation)", (t) => {
const a1 = jAmt(1, 0, "EUR");
const res = Amounts.add(jAmt(amountMaxValue, 0, "EUR"), a1);
t.true(res.saturated);
t.pass();
});
test("amount subtraction (simple)", (t) => {
const a1 = jAmt(2, 5, "EUR");
const a2 = jAmt(1, 0, "EUR");
const a3 = jAmt(1, 5, "EUR");
t.true(0 === Amounts.cmp(Amounts.sub(a1, a2).amount, a3));
t.pass();
});
test("amount subtraction (saturation)", (t) => {
const a1 = jAmt(0, 0, "EUR");
const a2 = jAmt(1, 0, "EUR");
let res = Amounts.sub(a1, a2);
t.true(res.saturated);
res = Amounts.sub(a1, a1);
t.true(!res.saturated);
t.pass();
});
test("amount comparison", (t) => {
t.is(Amounts.cmp(jAmt(1, 0, "EUR"), jAmt(1, 0, "EUR")), 0);
t.is(Amounts.cmp(jAmt(1, 1, "EUR"), jAmt(1, 0, "EUR")), 1);
t.is(Amounts.cmp(jAmt(1, 1, "EUR"), jAmt(1, 2, "EUR")), -1);
t.is(Amounts.cmp(jAmt(1, 0, "EUR"), jAmt(0, 0, "EUR")), 1);
t.is(Amounts.cmp(jAmt(0, 0, "EUR"), jAmt(1, 0, "EUR")), -1);
t.is(Amounts.cmp(jAmt(1, 0, "EUR"), jAmt(0, 100000000, "EUR")), 0);
t.throws(() => Amounts.cmp(jAmt(1, 0, "FOO"), jAmt(1, 0, "BAR")));
t.pass();
});
test("amount parsing", (t) => {
t.is(
Amounts.cmp(Amounts.parseOrThrow("TESTKUDOS:0"), jAmt(0, 0, "TESTKUDOS")),
0,
);
t.is(
Amounts.cmp(Amounts.parseOrThrow("TESTKUDOS:10"), jAmt(10, 0, "TESTKUDOS")),
0,
);
t.is(
Amounts.cmp(
Amounts.parseOrThrow("TESTKUDOS:0.1"),
jAmt(0, 10000000, "TESTKUDOS"),
),
0,
);
t.is(
Amounts.cmp(
Amounts.parseOrThrow("TESTKUDOS:0.00000001"),
jAmt(0, 1, "TESTKUDOS"),
),
0,
);
t.is(
Amounts.cmp(
Amounts.parseOrThrow("TESTKUDOS:4503599627370496.99999999"),
jAmt(4503599627370496, 99999999, "TESTKUDOS"),
),
0,
);
t.throws(() => Amounts.parseOrThrow("foo:"));
t.throws(() => Amounts.parseOrThrow("1.0"));
t.throws(() => Amounts.parseOrThrow("42"));
t.throws(() => Amounts.parseOrThrow(":1.0"));
t.throws(() => Amounts.parseOrThrow(":42"));
t.throws(() => Amounts.parseOrThrow("EUR:.42"));
t.throws(() => Amounts.parseOrThrow("EUR:42."));
t.throws(() => Amounts.parseOrThrow("TESTKUDOS:4503599627370497.99999999"));
t.is(
Amounts.cmp(
Amounts.parseOrThrow("TESTKUDOS:0.99999999"),
jAmt(0, 99999999, "TESTKUDOS"),
),
0,
);
t.throws(() => Amounts.parseOrThrow("TESTKUDOS:0.999999991"));
t.pass();
});
test("amount stringification", (t) => {
t.is(Amounts.stringify(jAmt(0, 0, "TESTKUDOS")), "TESTKUDOS:0");
t.is(Amounts.stringify(jAmt(4, 94000000, "TESTKUDOS")), "TESTKUDOS:4.94");
t.is(Amounts.stringify(jAmt(0, 10000000, "TESTKUDOS")), "TESTKUDOS:0.1");
t.is(Amounts.stringify(jAmt(0, 1, "TESTKUDOS")), "TESTKUDOS:0.00000001");
t.is(Amounts.stringify(jAmt(5, 0, "TESTKUDOS")), "TESTKUDOS:5");
// denormalized
t.is(Amounts.stringify(jAmt(1, 100000000, "TESTKUDOS")), "TESTKUDOS:2");
t.pass();
});
test("amount multiplication", (t) => {
t.is(Amounts.stringify(Amounts.mult(sAmt("EUR:1.11"), 0).amount), "EUR:0");
t.is(Amounts.stringify(Amounts.mult(sAmt("EUR:1.11"), 1).amount), "EUR:1.11");
t.is(Amounts.stringify(Amounts.mult(sAmt("EUR:1.11"), 2).amount), "EUR:2.22");
t.is(Amounts.stringify(Amounts.mult(sAmt("EUR:1.11"), 3).amount), "EUR:3.33");
t.is(Amounts.stringify(Amounts.mult(sAmt("EUR:1.11"), 4).amount), "EUR:4.44");
t.is(Amounts.stringify(Amounts.mult(sAmt("EUR:1.11"), 5).amount), "EUR:5.55");
});
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