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std/bytes/repeat_test.ts

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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.import { assertEquals, assertThrows } from "../testing/asserts.ts";import { repeat } from "./repeat.ts";
Deno.test("[bytes] repeat", () => { // input / output / count / error message const repeatTestCase = [ ["", "", 0], ["", "", 1], ["", "", 1.1, "bytes: repeat count must be an integer"], ["", "", 2], ["", "", 0], ["-", "", 0], ["-", "-", -1, "bytes: negative repeat count"], ["-", "----------", 10], ["abc ", "abc abc abc ", 3], ]; for (const [input, output, count, errMsg] of repeatTestCase) { if (errMsg) { assertThrows( () => { repeat(new TextEncoder().encode(input as string), count as number); }, Error, errMsg as string, ); } else { const newBytes = repeat( new TextEncoder().encode(input as string), count as number, );
assertEquals(new TextDecoder().decode(newBytes), output); } }});