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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 writeTextFileSyncSuccess() {
const filename = Deno.makeTempDirSync() + "/test.txt";
Deno.writeTextFileSync(filename, "Hello");
const dataRead = Deno.readTextFileSync(filename);
assertEquals(dataRead, "Hello");
},
);
Deno.test(
{ permissions: { read: true, write: true } },
function writeTextFileSyncByUrl() {
const tempDir = Deno.makeTempDirSync();
const fileUrl = new URL(
`file://${Deno.build.os === "windows" ? "/" : ""}${tempDir}/test.txt`,
);
Deno.writeTextFileSync(fileUrl, "Hello");
const dataRead = Deno.readTextFileSync(fileUrl);
assertEquals(dataRead, "Hello");
Deno.removeSync(fileUrl, { recursive: true });
},
);
Deno.test({ permissions: { write: true } }, function writeTextFileSyncFail() {
const filename = "/baddir/test.txt";
// The following should fail because /baddir doesn't exist (hopefully).
assertThrows(() => {
Deno.writeTextFileSync(filename, "hello");
}, Deno.errors.NotFound);
});
Deno.test({ permissions: { write: false } }, function writeTextFileSyncPerm() {
const filename = "/baddir/test.txt";
// The following should fail due to no write permission
assertThrows(() => {
Deno.writeTextFileSync(filename, "Hello");
}, Deno.errors.NotCapable);
});
Deno.test(
{ permissions: { read: true, write: true } },
function writeTextFileSyncUpdateMode() {
if (Deno.build.os !== "windows") {
const data = "Hello";
const filename = Deno.makeTempDirSync() + "/test.txt";
Deno.writeTextFileSync(filename, data, { mode: 0o755 });
assertEquals(Deno.statSync(filename).mode! & 0o777, 0o755);
Deno.writeTextFileSync(filename, data, { mode: 0o666 });
assertEquals(Deno.statSync(filename).mode! & 0o777, 0o666);
}
},
);
Deno.test(
{ permissions: { read: true, write: true } },
function writeTextFileSyncCreate() {
const data = "Hello";
const filename = Deno.makeTempDirSync() + "/test.txt";
let caughtError = false;
// if create turned off, the file won't be created
try {
Deno.writeTextFileSync(filename, data, { create: false });
} catch (e) {
caughtError = true;
assert(e instanceof Deno.errors.NotFound);
}
assert(caughtError);
// Turn on create, should have no error
Deno.writeTextFileSync(filename, data, { create: true });
Deno.writeTextFileSync(filename, data, { create: false });
assertEquals(Deno.readTextFileSync(filename), "Hello");
},
);
Deno.test(
{ permissions: { read: true, write: true } },
function writeTextFileSyncAppend() {
const data = "Hello";
const filename = Deno.makeTempDirSync() + "/test.txt";
Deno.writeTextFileSync(filename, data);
Deno.writeTextFileSync(filename, data, { append: true });
assertEquals(Deno.readTextFileSync(filename), "HelloHello");
// Now attempt overwrite
Deno.writeTextFileSync(filename, data, { append: false });
assertEquals(Deno.readTextFileSync(filename), "Hello");
// append not set should also overwrite
Deno.writeTextFileSync(filename, data);
assertEquals(Deno.readTextFileSync(filename), "Hello");
},
);
Deno.test(
{ permissions: { read: true, write: true } },
async function writeTextFileSuccess() {
const filename = Deno.makeTempDirSync() + "/test.txt";
await Deno.writeTextFile(filename, "Hello");
const dataRead = Deno.readTextFileSync(filename);
assertEquals(dataRead, "Hello");
},
);
Deno.test(
{ permissions: { read: true, write: true } },
async function writeTextFileByUrl() {
const tempDir = Deno.makeTempDirSync();
const fileUrl = new URL(
`file://${Deno.build.os === "windows" ? "/" : ""}${tempDir}/test.txt`,
);
await Deno.writeTextFile(fileUrl, "Hello");
const dataRead = Deno.readTextFileSync(fileUrl);
assertEquals(dataRead, "Hello");
Deno.removeSync(fileUrl, { recursive: true });
},
);
Deno.test(
{ permissions: { read: true, write: true } },
async function writeTextFileNotFound() {
const filename = "/baddir/test.txt";
// The following should fail because /baddir doesn't exist (hopefully).
await assertRejects(async () => {
await Deno.writeTextFile(filename, "Hello");
}, Deno.errors.NotFound);
},
);
Deno.test(
{ permissions: { write: false } },
async function writeTextFilePerm() {
const filename = "/baddir/test.txt";
// The following should fail due to no write permission
await assertRejects(async () => {
await Deno.writeTextFile(filename, "Hello");
}, Deno.errors.NotCapable);
},
);
Deno.test(
{ permissions: { read: true, write: true } },
async function writeTextFileUpdateMode() {
if (Deno.build.os !== "windows") {
const data = "Hello";
const filename = Deno.makeTempDirSync() + "/test.txt";
await Deno.writeTextFile(filename, data, { mode: 0o755 });
assertEquals(Deno.statSync(filename).mode! & 0o777, 0o755);
await Deno.writeTextFile(filename, data, { mode: 0o666 });
assertEquals(Deno.statSync(filename).mode! & 0o777, 0o666);
}
},
);
Deno.test(
{ permissions: { read: true, write: true } },
async function writeTextFileCreate() {
const data = "Hello";
const filename = Deno.makeTempDirSync() + "/test.txt";
let caughtError = false;
// if create turned off, the file won't be created
try {
await Deno.writeTextFile(filename, data, { create: false });
} catch (e) {
caughtError = true;
assert(e instanceof Deno.errors.NotFound);
}
assert(caughtError);
// Turn on create, should have no error
await Deno.writeTextFile(filename, data, { create: true });
await Deno.writeTextFile(filename, data, { create: false });
assertEquals(Deno.readTextFileSync(filename), "Hello");
},
);
Deno.test(
{ permissions: { read: true, write: true } },
async function writeTextFileAppend() {
const data = "Hello";
const filename = Deno.makeTempDirSync() + "/test.txt";
await Deno.writeTextFile(filename, data);
await Deno.writeTextFile(filename, data, { append: true });
assertEquals(Deno.readTextFileSync(filename), "HelloHello");
// Now attempt overwrite
await Deno.writeTextFile(filename, data, { append: false });
assertEquals(Deno.readTextFileSync(filename), "Hello");
// append not set should also overwrite
await Deno.writeTextFile(filename, data);
assertEquals(Deno.readTextFileSync(filename), "Hello");
},
);
Deno.test(
{ permissions: { read: true, write: true } },
async function writeTextFileStream() {
const stream = new ReadableStream({
pull(controller) {
controller.enqueue("Hello");
controller.enqueue("World");
controller.close();
},
});
const filename = Deno.makeTempDirSync() + "/test.txt";
await Deno.writeTextFile(filename, stream);
assertEquals(Deno.readTextFileSync(filename), "HelloWorld");
},
);
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