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denoland-deno/cli/js/tests/write_file_test.ts
Ryan Dahl e0ca60e770
BREAKING: Use LLVM target triple for Deno.build (#4948)
Deno.build.os values have changed to correspond to standard LLVM target triples
"win" -> "windows"
"mac" -> "darwin"
2020-04-28 12:35:23 -04:00

228 lines
7.4 KiB
TypeScript

// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
import { unitTest, assert, assertEquals } from "./test_util.ts";
unitTest(
{ perms: { 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);
}
);
unitTest({ perms: { 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;
assert(e instanceof Deno.errors.NotFound);
}
assert(caughtError);
});
unitTest({ perms: { 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;
assert(e instanceof Deno.errors.PermissionDenied);
}
assert(caughtError);
});
unitTest(
{ perms: { read: true, write: true } },
function writeFileSyncUpdateMode(): void {
if (Deno.build.os !== "windows") {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const filename = Deno.makeTempDirSync() + "/test.txt";
Deno.writeFileSync(filename, data, { mode: 0o755 });
assertEquals(Deno.statSync(filename).mode! & 0o777, 0o755);
Deno.writeFileSync(filename, data, { mode: 0o666 });
assertEquals(Deno.statSync(filename).mode! & 0o777, 0o666);
}
}
);
unitTest(
{ perms: { 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;
assert(e instanceof Deno.errors.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);
}
);
unitTest(
{ perms: { 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);
}
);
unitTest(
{ perms: { 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);
}
);
unitTest(
{ perms: { 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;
assert(e instanceof Deno.errors.NotFound);
}
assert(caughtError);
}
);
unitTest(
{ perms: { 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;
assert(e instanceof Deno.errors.PermissionDenied);
}
assert(caughtError);
}
);
unitTest(
{ perms: { read: true, write: true } },
async function writeFileUpdateMode(): Promise<void> {
if (Deno.build.os !== "windows") {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const filename = Deno.makeTempDirSync() + "/test.txt";
await Deno.writeFile(filename, data, { mode: 0o755 });
assertEquals(Deno.statSync(filename).mode! & 0o777, 0o755);
await Deno.writeFile(filename, data, { mode: 0o666 });
assertEquals(Deno.statSync(filename).mode! & 0o777, 0o666);
}
}
);
unitTest(
{ perms: { 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;
assert(e instanceof Deno.errors.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);
}
);
unitTest(
{ perms: { 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);
}
);