deno.land / std@0.166.0 / collections / filter_entries_test.ts

filter_entries_test.ts
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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
import { assertEquals } from "../testing/asserts.ts";import { filterEntries } from "./filter_entries.ts";
function filterEntriesTest<T>( input: [Record<string, T>, (entry: [string, T]) => boolean], expected: Record<string, T>, message?: string,) { const actual = filterEntries(...input); assertEquals(actual, expected, message);}
Deno.test({ name: "[collections/filterEntries] no mutation", fn() { const object = { a: 5, b: true }; filterEntries(object, ([key]) => key !== "a");
assertEquals(object, { a: 5, b: true }); },});
Deno.test({ name: "[collections/filterEntries] empty input", fn() { filterEntriesTest( [{}, () => true], {}, ); },});
Deno.test({ name: "[collections/filterEntries] identity", fn() { filterEntriesTest( [ { foo: true, bar: "lorem", 1: -5, }, () => true, ], { foo: true, bar: "lorem", 1: -5, }, ); },});
Deno.test({ name: "[collections/filterEntries] clean object", fn() { filterEntriesTest( [ { test: "foo", "": [] }, () => false, ], {}, ); },});
Deno.test({ name: "[collections/filterEntries] filters", fn() { filterEntriesTest( [ { "Anna": 22, "Kim": 24, "Karen": 33, "Claudio": 11, "Karl": 45, }, ([name, age]) => name.startsWith("K") && age > 30, ], { "Karen": 33, "Karl": 45, }, ); filterEntriesTest( [ { "A": true, "b": "foo", "C": 5, "d": -2, "": false, }, ([key]) => key.toUpperCase() === key, ], { "A": true, "C": 5, "": false, }, ); },});
std
Deno standard library
GitHub Repositorydenoland/deno_std
GitHub Stars
2458

Version Info

Tagged at
2 months ago