import { assertEquals } from "../testing/asserts.ts";import { sortBy } from "./sort_by.ts";
function sortByTest<T>( input: [ Array<T>, | ((el: T) => number) | ((el: T) => string) | ((el: T) => bigint) | ((el: T) => Date), ], expected: Array<T>, message?: string,) { const actual = sortBy(...input); assertEquals(actual, expected, message);}
Deno.test({ name: "[collections/sortBy] no mutation", fn() { const array = ["a", "abc", "ba"]; sortBy(array, (it) => it.length);
assertEquals(array, ["a", "abc", "ba"]); },});
Deno.test({ name: "[collections/sortBy] empty input", fn() { sortByTest( [[], () => 5], [], ); },});
Deno.test({ name: "[collections/sortBy] identity selector", fn() { sortByTest( [ [2, 3, 1], (it) => it, ], [1, 2, 3], ); },});
Deno.test({ name: "[collections/sortBy] stable sort", fn() { sortByTest( [ [ { id: 1, date: "February 1, 2022" }, { id: 2, date: "December 17, 1995" }, { id: 3, date: "June 12, 2012" }, { id: 4, date: "December 17, 1995" }, { id: 5, date: "June 12, 2012" }, ], (it) => new Date(it.date), ], [ { id: 2, date: "December 17, 1995" }, { id: 4, date: "December 17, 1995" }, { id: 3, date: "June 12, 2012" }, { id: 5, date: "June 12, 2012" }, { id: 1, date: "February 1, 2022" }, ], ); sortByTest( [ [ { id: 1, str: "c" }, { id: 2, str: "a" }, { id: 3, str: "b" }, { id: 4, str: "a" }, { id: 5, str: "b" }, ], (it) => it.str, ], [ { id: 2, str: "a" }, { id: 4, str: "a" }, { id: 3, str: "b" }, { id: 5, str: "b" }, { id: 1, str: "c" }, ], ); },});
Deno.test({ name: "[collections/sortBy] special number values", fn() { sortByTest( [ [ 1, Number.POSITIVE_INFINITY, 2, Number.NEGATIVE_INFINITY, 3, Number.NaN, 4, Number.NaN, ], (it) => it, ], [ Number.NEGATIVE_INFINITY, 1, 2, 3, 4, Number.POSITIVE_INFINITY, Number.NaN, Number.NaN, ], ); sortByTest( [ [ Number.NaN, 1, Number.POSITIVE_INFINITY, Number.NaN, 7, Number.NEGATIVE_INFINITY, Number.NaN, 2, 6, 5, 9, ], (it) => it, ], [ Number.NEGATIVE_INFINITY, 1, 2, 5, 6, 7, 9, Number.POSITIVE_INFINITY, Number.NaN, Number.NaN, Number.NaN, ], ); },});
Deno.test({ name: "[collections/sortBy] sortings", fn() { const testArray = [ { name: "benchmark", stage: 3 }, { name: "test", stage: 2 }, { name: "build", stage: 1 }, { name: "deploy", stage: 4 }, ];
sortByTest( [ testArray, (it) => it.stage, ], [ { name: "build", stage: 1 }, { name: "test", stage: 2 }, { name: "benchmark", stage: 3 }, { name: "deploy", stage: 4 }, ], ); sortByTest( [ testArray, (it) => it.name, ], [ { name: "benchmark", stage: 3 }, { name: "build", stage: 1 }, { name: "deploy", stage: 4 }, { name: "test", stage: 2 }, ], ); sortByTest( [ [ "9007199254740999", "9007199254740991", "9007199254740995", ], (it) => BigInt(it), ], [ "9007199254740991", "9007199254740995", "9007199254740999", ], ); sortByTest( [ [ "February 1, 2022", "December 17, 1995", "June 12, 2012", ], (it) => new Date(it), ], [ "December 17, 1995", "June 12, 2012", "February 1, 2022", ], ); },});