diff options
author | Florian Dold <florian.dold@gmail.com> | 2020-08-03 13:00:48 +0530 |
---|---|---|
committer | Florian Dold <florian.dold@gmail.com> | 2020-08-03 13:01:05 +0530 |
commit | ffd2a62c3f7df94365980302fef3bc3376b48182 (patch) | |
tree | 270af6f16b4cc7f5da2afdba55c8bc9dbea5eca5 /packages/taler-wallet-core/src/util/amounts-test.ts | |
parent | aa481e42675fb7c4dcbbeec0ba1c61e1953b9596 (diff) | |
download | wallet-core-ffd2a62c3f7df94365980302fef3bc3376b48182.tar.xz |
modularize repo, use pnpm, improve typechecking
Diffstat (limited to 'packages/taler-wallet-core/src/util/amounts-test.ts')
-rw-r--r-- | packages/taler-wallet-core/src/util/amounts-test.ts | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/packages/taler-wallet-core/src/util/amounts-test.ts b/packages/taler-wallet-core/src/util/amounts-test.ts new file mode 100644 index 000000000..afd8caa51 --- /dev/null +++ b/packages/taler-wallet-core/src/util/amounts-test.ts @@ -0,0 +1,140 @@ +/* + 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 } from "../util/amounts"; + +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(Amounts.maxAmountValue, 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"); +}); |