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// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import { testPerm, assert, assertEquals } from "./test_util.ts";
testPerm({ read: true, write: true }, function writeFileSyncSuccess(): void {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const filename = Deno.makeTempDirSync() + "/test.txt";
Deno.writeFileSync(filename, data);
const dataRead = Deno.readFileSync(filename);
const dec = new TextDecoder("utf-8");
const actual = dec.decode(dataRead);
assertEquals("Hello", actual);
});
testPerm({ write: true }, function writeFileSyncFail(): void {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const filename = "/baddir/test.txt";
// The following should fail because /baddir doesn't exist (hopefully).
let caughtError = false;
try {
Deno.writeFileSync(filename, data);
} catch (e) {
caughtError = true;
assertEquals(e.kind, Deno.ErrorKind.NotFound);
assertEquals(e.name, "NotFound");
}
assert(caughtError);
});
testPerm({ write: false }, function writeFileSyncPerm(): void {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const filename = "/baddir/test.txt";
// The following should fail due to no write permission
let caughtError = false;
try {
Deno.writeFileSync(filename, data);
} catch (e) {
caughtError = true;
assertEquals(e.kind, Deno.ErrorKind.PermissionDenied);
assertEquals(e.name, "PermissionDenied");
}
assert(caughtError);
});
testPerm({ read: true, write: true }, function writeFileSyncUpdatePerm(): void {
if (Deno.build.os !== "win") {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const filename = Deno.makeTempDirSync() + "/test.txt";
Deno.writeFileSync(filename, data, { perm: 0o755 });
assertEquals(Deno.statSync(filename).mode & 0o777, 0o755);
Deno.writeFileSync(filename, data, { perm: 0o666 });
assertEquals(Deno.statSync(filename).mode & 0o777, 0o666);
}
});
testPerm({ read: true, write: true }, function writeFileSyncCreate(): void {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const filename = Deno.makeTempDirSync() + "/test.txt";
let caughtError = false;
// if create turned off, the file won't be created
try {
Deno.writeFileSync(filename, data, { create: false });
} catch (e) {
caughtError = true;
assertEquals(e.kind, Deno.ErrorKind.NotFound);
assertEquals(e.name, "NotFound");
}
assert(caughtError);
// Turn on create, should have no error
Deno.writeFileSync(filename, data, { create: true });
Deno.writeFileSync(filename, data, { create: false });
const dataRead = Deno.readFileSync(filename);
const dec = new TextDecoder("utf-8");
const actual = dec.decode(dataRead);
assertEquals("Hello", actual);
});
testPerm({ read: true, write: true }, function writeFileSyncAppend(): void {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const filename = Deno.makeTempDirSync() + "/test.txt";
Deno.writeFileSync(filename, data);
Deno.writeFileSync(filename, data, { append: true });
let dataRead = Deno.readFileSync(filename);
const dec = new TextDecoder("utf-8");
let actual = dec.decode(dataRead);
assertEquals("HelloHello", actual);
// Now attempt overwrite
Deno.writeFileSync(filename, data, { append: false });
dataRead = Deno.readFileSync(filename);
actual = dec.decode(dataRead);
assertEquals("Hello", actual);
// append not set should also overwrite
Deno.writeFileSync(filename, data);
dataRead = Deno.readFileSync(filename);
actual = dec.decode(dataRead);
assertEquals("Hello", actual);
});
testPerm(
{ read: true, write: true },
async function writeFileSuccess(): Promise<void> {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const filename = Deno.makeTempDirSync() + "/test.txt";
await Deno.writeFile(filename, data);
const dataRead = Deno.readFileSync(filename);
const dec = new TextDecoder("utf-8");
const actual = dec.decode(dataRead);
assertEquals("Hello", actual);
}
);
testPerm(
{ read: true, write: true },
async function writeFileNotFound(): Promise<void> {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const filename = "/baddir/test.txt";
// The following should fail because /baddir doesn't exist (hopefully).
let caughtError = false;
try {
await Deno.writeFile(filename, data);
} catch (e) {
caughtError = true;
assertEquals(e.kind, Deno.ErrorKind.NotFound);
assertEquals(e.name, "NotFound");
}
assert(caughtError);
}
);
testPerm({ read: true, write: false }, async function writeFilePerm(): Promise<
void
> {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const filename = "/baddir/test.txt";
// The following should fail due to no write permission
let caughtError = false;
try {
await Deno.writeFile(filename, data);
} catch (e) {
caughtError = true;
assertEquals(e.kind, Deno.ErrorKind.PermissionDenied);
assertEquals(e.name, "PermissionDenied");
}
assert(caughtError);
});
testPerm(
{ read: true, write: true },
async function writeFileUpdatePerm(): Promise<void> {
if (Deno.build.os !== "win") {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const filename = Deno.makeTempDirSync() + "/test.txt";
await Deno.writeFile(filename, data, { perm: 0o755 });
assertEquals(Deno.statSync(filename).mode & 0o777, 0o755);
await Deno.writeFile(filename, data, { perm: 0o666 });
assertEquals(Deno.statSync(filename).mode & 0o777, 0o666);
}
}
);
testPerm({ read: true, write: true }, async function writeFileCreate(): Promise<
void
> {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const filename = Deno.makeTempDirSync() + "/test.txt";
let caughtError = false;
// if create turned off, the file won't be created
try {
await Deno.writeFile(filename, data, { create: false });
} catch (e) {
caughtError = true;
assertEquals(e.kind, Deno.ErrorKind.NotFound);
assertEquals(e.name, "NotFound");
}
assert(caughtError);
// Turn on create, should have no error
await Deno.writeFile(filename, data, { create: true });
await Deno.writeFile(filename, data, { create: false });
const dataRead = Deno.readFileSync(filename);
const dec = new TextDecoder("utf-8");
const actual = dec.decode(dataRead);
assertEquals("Hello", actual);
});
testPerm({ read: true, write: true }, async function writeFileAppend(): Promise<
void
> {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const filename = Deno.makeTempDirSync() + "/test.txt";
await Deno.writeFile(filename, data);
await Deno.writeFile(filename, data, { append: true });
let dataRead = Deno.readFileSync(filename);
const dec = new TextDecoder("utf-8");
let actual = dec.decode(dataRead);
assertEquals("HelloHello", actual);
// Now attempt overwrite
await Deno.writeFile(filename, data, { append: false });
dataRead = Deno.readFileSync(filename);
actual = dec.decode(dataRead);
assertEquals("Hello", actual);
// append not set should also overwrite
await Deno.writeFile(filename, data);
dataRead = Deno.readFileSync(filename);
actual = dec.decode(dataRead);
assertEquals("Hello", actual);
});
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