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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import {
assert,
assertEquals,
assertRejects,
assertThrows,
} from "./test_util.ts";
Deno.test(
{ permissions: { read: true, write: true } },
function linkSyncSuccess() {
const testDir = Deno.makeTempDirSync();
const oldData = "Hardlink";
const oldName = testDir + "/oldname";
const newName = testDir + "/newname";
Deno.writeFileSync(oldName, new TextEncoder().encode(oldData));
// Create the hard link.
Deno.linkSync(oldName, newName);
// We should expect reading the same content.
const newData = Deno.readTextFileSync(newName);
assertEquals(oldData, newData);
// Writing to newname also affects oldname.
const newData2 = "Modified";
Deno.writeFileSync(newName, new TextEncoder().encode(newData2));
assertEquals(
newData2,
Deno.readTextFileSync(oldName),
);
// Writing to oldname also affects newname.
const newData3 = "ModifiedAgain";
Deno.writeFileSync(oldName, new TextEncoder().encode(newData3));
assertEquals(
newData3,
Deno.readTextFileSync(newName),
);
// Remove oldname. File still accessible through newname.
Deno.removeSync(oldName);
const newNameStat = Deno.statSync(newName);
assert(newNameStat.isFile);
assert(!newNameStat.isSymlink); // Not a symlink.
assertEquals(
newData3,
Deno.readTextFileSync(newName),
);
},
);
Deno.test(
{ permissions: { read: true, write: true } },
function linkSyncExists() {
const testDir = Deno.makeTempDirSync();
const oldName = testDir + "/oldname";
const newName = testDir + "/newname";
Deno.writeFileSync(oldName, new TextEncoder().encode("oldName"));
// newname is already created.
Deno.writeFileSync(newName, new TextEncoder().encode("newName"));
assertThrows(
() => {
Deno.linkSync(oldName, newName);
},
Deno.errors.AlreadyExists,
`link '${oldName}' -> '${newName}'`,
);
},
);
Deno.test(
{ permissions: { read: true, write: true } },
function linkSyncNotFound() {
const testDir = Deno.makeTempDirSync();
const oldName = testDir + "/oldname";
const newName = testDir + "/newname";
assertThrows(
() => {
Deno.linkSync(oldName, newName);
},
Deno.errors.NotFound,
`link '${oldName}' -> '${newName}'`,
);
},
);
Deno.test(
{ permissions: { read: false, write: true } },
function linkSyncReadPerm() {
assertThrows(() => {
Deno.linkSync("oldbaddir", "newbaddir");
}, Deno.errors.NotCapable);
},
);
Deno.test(
{ permissions: { read: true, write: false } },
function linkSyncWritePerm() {
assertThrows(() => {
Deno.linkSync("oldbaddir", "newbaddir");
}, Deno.errors.NotCapable);
},
);
Deno.test(
{ permissions: { read: true, write: true } },
async function linkSuccess() {
const testDir = Deno.makeTempDirSync();
const oldData = "Hardlink";
const oldName = testDir + "/oldname";
const newName = testDir + "/newname";
Deno.writeFileSync(oldName, new TextEncoder().encode(oldData));
// Create the hard link.
await Deno.link(oldName, newName);
// We should expect reading the same content.
const newData = Deno.readTextFileSync(newName);
assertEquals(oldData, newData);
// Writing to newname also affects oldname.
const newData2 = "Modified";
Deno.writeFileSync(newName, new TextEncoder().encode(newData2));
assertEquals(
newData2,
Deno.readTextFileSync(oldName),
);
// Writing to oldname also affects newname.
const newData3 = "ModifiedAgain";
Deno.writeFileSync(oldName, new TextEncoder().encode(newData3));
assertEquals(
newData3,
Deno.readTextFileSync(newName),
);
// Remove oldname. File still accessible through newname.
Deno.removeSync(oldName);
const newNameStat = Deno.statSync(newName);
assert(newNameStat.isFile);
assert(!newNameStat.isSymlink); // Not a symlink.
assertEquals(
newData3,
Deno.readTextFileSync(newName),
);
},
);
Deno.test(
{ permissions: { read: true, write: true } },
async function linkExists() {
const testDir = Deno.makeTempDirSync();
const oldName = testDir + "/oldname";
const newName = testDir + "/newname";
Deno.writeFileSync(oldName, new TextEncoder().encode("oldName"));
// newname is already created.
Deno.writeFileSync(newName, new TextEncoder().encode("newName"));
await assertRejects(
async () => {
await Deno.link(oldName, newName);
},
Deno.errors.AlreadyExists,
`link '${oldName}' -> '${newName}'`,
);
},
);
Deno.test(
{ permissions: { read: true, write: true } },
async function linkNotFound() {
const testDir = Deno.makeTempDirSync();
const oldName = testDir + "/oldname";
const newName = testDir + "/newname";
await assertRejects(
async () => {
await Deno.link(oldName, newName);
},
Deno.errors.NotFound,
`link '${oldName}' -> '${newName}'`,
);
},
);
Deno.test(
{ permissions: { read: false, write: true } },
async function linkReadPerm() {
await assertRejects(async () => {
await Deno.link("oldbaddir", "newbaddir");
}, Deno.errors.NotCapable);
},
);
Deno.test(
{ permissions: { read: true, write: false } },
async function linkWritePerm() {
await assertRejects(async () => {
await Deno.link("oldbaddir", "newbaddir");
}, Deno.errors.NotCapable);
},
);
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