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denoland-deno/cli/tests/unit/truncate_test.ts
Feng Yu 668b400ff2
feat(runtime): improve error messages of runtime fs (#11984)
This commit annotates errors returned from FS Deno APIs to include
paths that were passed to the API calls.

Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
2021-10-11 15:21:18 +02:00

121 lines
3.5 KiB
TypeScript

// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
import {
assertEquals,
assertRejects,
assertThrows,
unitTest,
} from "./test_util.ts";
unitTest(
{ permissions: { read: true, write: true } },
function ftruncateSyncSuccess() {
const filename = Deno.makeTempDirSync() + "/test_ftruncateSync.txt";
const file = Deno.openSync(filename, {
create: true,
read: true,
write: true,
});
Deno.ftruncateSync(file.rid, 20);
assertEquals(Deno.readFileSync(filename).byteLength, 20);
Deno.ftruncateSync(file.rid, 5);
assertEquals(Deno.readFileSync(filename).byteLength, 5);
Deno.ftruncateSync(file.rid, -5);
assertEquals(Deno.readFileSync(filename).byteLength, 0);
Deno.close(file.rid);
Deno.removeSync(filename);
},
);
unitTest(
{ permissions: { read: true, write: true } },
async function ftruncateSuccess() {
const filename = Deno.makeTempDirSync() + "/test_ftruncate.txt";
const file = await Deno.open(filename, {
create: true,
read: true,
write: true,
});
await Deno.ftruncate(file.rid, 20);
assertEquals((await Deno.readFile(filename)).byteLength, 20);
await Deno.ftruncate(file.rid, 5);
assertEquals((await Deno.readFile(filename)).byteLength, 5);
await Deno.ftruncate(file.rid, -5);
assertEquals((await Deno.readFile(filename)).byteLength, 0);
Deno.close(file.rid);
await Deno.remove(filename);
},
);
unitTest(
{ permissions: { read: true, write: true } },
function truncateSyncSuccess() {
const filename = Deno.makeTempDirSync() + "/test_truncateSync.txt";
Deno.writeFileSync(filename, new Uint8Array(5));
Deno.truncateSync(filename, 20);
assertEquals(Deno.readFileSync(filename).byteLength, 20);
Deno.truncateSync(filename, 5);
assertEquals(Deno.readFileSync(filename).byteLength, 5);
Deno.truncateSync(filename, -5);
assertEquals(Deno.readFileSync(filename).byteLength, 0);
Deno.removeSync(filename);
},
);
unitTest(
{ permissions: { read: true, write: true } },
async function truncateSuccess() {
const filename = Deno.makeTempDirSync() + "/test_truncate.txt";
await Deno.writeFile(filename, new Uint8Array(5));
await Deno.truncate(filename, 20);
assertEquals((await Deno.readFile(filename)).byteLength, 20);
await Deno.truncate(filename, 5);
assertEquals((await Deno.readFile(filename)).byteLength, 5);
await Deno.truncate(filename, -5);
assertEquals((await Deno.readFile(filename)).byteLength, 0);
await Deno.remove(filename);
},
);
unitTest({ permissions: { write: false } }, function truncateSyncPerm() {
assertThrows(() => {
Deno.truncateSync("/test_truncateSyncPermission.txt");
}, Deno.errors.PermissionDenied);
});
unitTest({ permissions: { write: false } }, async function truncatePerm() {
await assertRejects(async () => {
await Deno.truncate("/test_truncatePermission.txt");
}, Deno.errors.PermissionDenied);
});
unitTest(
{ permissions: { read: true, write: true } },
function truncateSyncNotFound() {
const filename = "/badfile.txt";
assertThrows(
() => {
Deno.truncateSync(filename);
},
Deno.errors.NotFound,
`truncate '${filename}'`,
);
},
);
unitTest(
{ permissions: { read: true, write: true } },
async function truncateSyncNotFound() {
const filename = "/badfile.txt";
await assertRejects(
async () => {
await Deno.truncate(filename);
},
Deno.errors.NotFound,
`truncate '${filename}'`,
);
},
);