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8d96dffa41
Rewrite "testPerm" helper function used for testing of internal runtime code. It's been renamed to "unitTest" and provides API that is extensible in the future by accepting optional "UnitTestOptions" argument. "test" helper was also removed and replaced by overloaded version of "unitTest" that takes only function argument. "UnitTestOptions" currently supports "perms" and "skip" options, where former works exactly as first argument to "testPerm" did, while the latter allows to conditionally skip tests.
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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