Files
openstapps/packages/collection-utils/test/min.spec.ts
2023-05-31 14:04:03 +02:00

45 lines
1.3 KiB
TypeScript

/*
* Copyright (C) 2022 StApps
* This program 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, version 3.
*
* This program 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
* this program. If not, see <https://www.gnu.org/licenses/>.
*/
import { minBy } from "../src/min.js";
import { expect } from "chai";
describe("minBy", function () {
it("should pick the minimum value based on transform", function () {
expect(
minBy(
[
{ id: 1, name: "A" },
{ id: 2, name: "B" },
{ id: 3, name: "C" },
],
(it) => it.id
)
).to.deep.equal({ id: 1, name: "A" });
});
it("should not return undefined if there are other choices", function () {
expect(
minBy(
[
{ id: undefined, name: "B" },
{ id: 1, name: "A" },
{ id: undefined, name: "C" },
],
(it) => it.id
)
).to.deep.equal({ id: 1, name: "A" });
});
});