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https://github.com/denoland/deno
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c42a9d7370
A major API change was that asserts are imported from testing/asserts.ts now rather than testing/mod.ts and assertEqual as renamed to assertEquals to conform to what is most common in JavaScript.
72 lines
2.2 KiB
TypeScript
72 lines
2.2 KiB
TypeScript
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
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import { testPerm, assertEquals } from "./test_util.ts";
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function readDataSync(name: string): string {
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const data = Deno.readFileSync(name);
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const decoder = new TextDecoder("utf-8");
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const text = decoder.decode(data);
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return text;
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}
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async function readData(name: string): Promise<string> {
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const data = await Deno.readFile(name);
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const decoder = new TextDecoder("utf-8");
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const text = decoder.decode(data);
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return text;
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}
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testPerm({ read: true, write: true }, function truncateSyncSuccess() {
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const enc = new TextEncoder();
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const d = enc.encode("Hello");
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const filename = Deno.makeTempDirSync() + "/test_truncateSync.txt";
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Deno.writeFileSync(filename, d);
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Deno.truncateSync(filename, 20);
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let data = readDataSync(filename);
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assertEquals(data.length, 20);
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Deno.truncateSync(filename, 5);
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data = readDataSync(filename);
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assertEquals(data.length, 5);
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Deno.truncateSync(filename, -5);
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data = readDataSync(filename);
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assertEquals(data.length, 0);
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Deno.removeSync(filename);
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});
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testPerm({ read: true, write: true }, async function truncateSuccess() {
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const enc = new TextEncoder();
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const d = enc.encode("Hello");
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const filename = Deno.makeTempDirSync() + "/test_truncate.txt";
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await Deno.writeFile(filename, d);
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await Deno.truncate(filename, 20);
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let data = await readData(filename);
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assertEquals(data.length, 20);
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await Deno.truncate(filename, 5);
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data = await readData(filename);
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assertEquals(data.length, 5);
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await Deno.truncate(filename, -5);
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data = await readData(filename);
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assertEquals(data.length, 0);
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await Deno.remove(filename);
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});
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testPerm({ write: false }, function truncateSyncPerm() {
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let err;
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try {
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Deno.mkdirSync("/test_truncateSyncPermission.txt");
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} catch (e) {
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err = e;
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}
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assertEquals(err.kind, Deno.ErrorKind.PermissionDenied);
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assertEquals(err.name, "PermissionDenied");
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});
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testPerm({ write: false }, async function truncatePerm() {
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let err;
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try {
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await Deno.mkdir("/test_truncatePermission.txt");
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} catch (e) {
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err = e;
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}
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assertEquals(err.kind, Deno.ErrorKind.PermissionDenied);
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assertEquals(err.name, "PermissionDenied");
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});
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