mirror of
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95 lines
2.4 KiB
TypeScript
95 lines
2.4 KiB
TypeScript
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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import { assertEquals, assertThrows, fail } from "@std/assert";
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import { truncate, truncateSync } from "node:fs";
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Deno.test({
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name: "ASYNC: no callback function results in Error",
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fn() {
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assertThrows(
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() => {
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// @ts-expect-error Argument of type 'number' is not assignable to parameter of type 'NoParamCallback'
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truncate("some/path", 0);
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},
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Error,
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"No callback function supplied",
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);
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},
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});
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Deno.test({
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name: "ASYNC: truncate entire file contents",
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async fn() {
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const file: string = Deno.makeTempFileSync();
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await Deno.writeTextFile(file, "hello world");
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await new Promise<void>((resolve, reject) => {
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truncate(file, (err: Error | null) => {
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if (err !== null) reject();
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else resolve();
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});
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})
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.then(
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() => {
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const fileInfo: Deno.FileInfo = Deno.lstatSync(file);
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assertEquals(fileInfo.size, 0);
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},
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() => {
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fail("No error expected");
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},
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)
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.finally(() => Deno.removeSync(file));
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},
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});
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Deno.test({
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name: "ASYNC: truncate file to a size of precisely len bytes",
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async fn() {
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const file: string = Deno.makeTempFileSync();
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await Deno.writeTextFile(file, "hello world");
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await new Promise<void>((resolve, reject) => {
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truncate(file, 3, (err: Error | null) => {
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if (err !== null) reject();
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else resolve();
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});
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})
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.then(
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() => {
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const fileInfo: Deno.FileInfo = Deno.lstatSync(file);
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assertEquals(fileInfo.size, 3);
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},
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() => {
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fail("No error expected");
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},
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)
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.finally(() => Deno.removeSync(file));
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},
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});
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Deno.test({
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name: "SYNC: truncate entire file contents",
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fn() {
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const file: string = Deno.makeTempFileSync();
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try {
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truncateSync(file);
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const fileInfo: Deno.FileInfo = Deno.lstatSync(file);
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assertEquals(fileInfo.size, 0);
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} finally {
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Deno.removeSync(file);
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}
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},
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});
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Deno.test({
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name: "SYNC: truncate file to a size of precisely len bytes",
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fn() {
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const file: string = Deno.makeTempFileSync();
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try {
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truncateSync(file, 3);
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const fileInfo: Deno.FileInfo = Deno.lstatSync(file);
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assertEquals(fileInfo.size, 3);
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} finally {
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Deno.removeSync(file);
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}
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},
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});
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