mirror of
https://github.com/denoland/deno.git
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147 lines
4.4 KiB
TypeScript
147 lines
4.4 KiB
TypeScript
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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import { unitTest, assert, assertEquals } from "./test_util.ts";
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unitTest(
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{ perms: { read: true, write: true } },
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function linkSyncSuccess(): void {
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const testDir = Deno.makeTempDirSync();
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const oldData = "Hardlink";
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const oldName = testDir + "/oldname";
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const newName = testDir + "/newname";
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Deno.writeFileSync(oldName, new TextEncoder().encode(oldData));
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// Create the hard link.
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Deno.linkSync(oldName, newName);
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// We should expect reading the same content.
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const newData = new TextDecoder().decode(Deno.readFileSync(newName));
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assertEquals(oldData, newData);
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// Writing to newname also affects oldname.
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const newData2 = "Modified";
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Deno.writeFileSync(newName, new TextEncoder().encode(newData2));
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assertEquals(
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newData2,
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new TextDecoder().decode(Deno.readFileSync(oldName))
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);
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// Writing to oldname also affects newname.
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const newData3 = "ModifiedAgain";
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Deno.writeFileSync(oldName, new TextEncoder().encode(newData3));
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assertEquals(
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newData3,
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new TextDecoder().decode(Deno.readFileSync(newName))
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);
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// Remove oldname. File still accessible through newname.
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Deno.removeSync(oldName);
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const newNameStat = Deno.statSync(newName);
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assert(newNameStat.isFile);
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assert(!newNameStat.isSymlink); // Not a symlink.
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assertEquals(
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newData3,
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new TextDecoder().decode(Deno.readFileSync(newName))
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);
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}
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);
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unitTest(
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{ perms: { read: true, write: true } },
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function linkSyncExists(): void {
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const testDir = Deno.makeTempDirSync();
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const oldName = testDir + "/oldname";
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const newName = testDir + "/newname";
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Deno.writeFileSync(oldName, new TextEncoder().encode("oldName"));
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// newname is already created.
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Deno.writeFileSync(newName, new TextEncoder().encode("newName"));
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let err;
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try {
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Deno.linkSync(oldName, newName);
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} catch (e) {
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err = e;
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}
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assert(!!err);
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assert(err instanceof Deno.errors.AlreadyExists);
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}
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);
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unitTest(
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{ perms: { read: true, write: true } },
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function linkSyncNotFound(): void {
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const testDir = Deno.makeTempDirSync();
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const oldName = testDir + "/oldname";
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const newName = testDir + "/newname";
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let err;
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try {
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Deno.linkSync(oldName, newName);
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} catch (e) {
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err = e;
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}
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assert(!!err);
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assert(err instanceof Deno.errors.NotFound);
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}
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);
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unitTest(
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{ perms: { read: false, write: true } },
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function linkSyncReadPerm(): void {
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let err;
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try {
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Deno.linkSync("oldbaddir", "newbaddir");
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} catch (e) {
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err = e;
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}
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assert(err instanceof Deno.errors.PermissionDenied);
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assertEquals(err.name, "PermissionDenied");
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}
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);
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unitTest(
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{ perms: { read: true, write: false } },
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function linkSyncWritePerm(): void {
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let err;
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try {
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Deno.linkSync("oldbaddir", "newbaddir");
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} catch (e) {
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err = e;
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}
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assert(err instanceof Deno.errors.PermissionDenied);
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assertEquals(err.name, "PermissionDenied");
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}
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);
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unitTest(
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{ perms: { read: true, write: true } },
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async function linkSuccess(): Promise<void> {
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const testDir = Deno.makeTempDirSync();
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const oldData = "Hardlink";
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const oldName = testDir + "/oldname";
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const newName = testDir + "/newname";
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Deno.writeFileSync(oldName, new TextEncoder().encode(oldData));
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// Create the hard link.
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await Deno.link(oldName, newName);
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// We should expect reading the same content.
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const newData = new TextDecoder().decode(Deno.readFileSync(newName));
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assertEquals(oldData, newData);
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// Writing to newname also affects oldname.
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const newData2 = "Modified";
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Deno.writeFileSync(newName, new TextEncoder().encode(newData2));
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assertEquals(
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newData2,
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new TextDecoder().decode(Deno.readFileSync(oldName))
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);
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// Writing to oldname also affects newname.
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const newData3 = "ModifiedAgain";
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Deno.writeFileSync(oldName, new TextEncoder().encode(newData3));
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assertEquals(
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newData3,
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new TextDecoder().decode(Deno.readFileSync(newName))
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);
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// Remove oldname. File still accessible through newname.
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Deno.removeSync(oldName);
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const newNameStat = Deno.statSync(newName);
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assert(newNameStat.isFile);
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assert(!newNameStat.isSymlink); // Not a symlink.
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assertEquals(
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newData3,
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new TextDecoder().decode(Deno.readFileSync(newName))
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);
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}
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);
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