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denoland-deno/js/write_file_test.ts
Kitson Kelly a21a5ad2fa Add Deno global namespace (#1748)
Resolves #1705

This PR adds the Deno APIs as a global namespace named `Deno`. For backwards
compatibility, the ability to `import * from "deno"` is preserved. I have tried
to convert every test and internal code the references the module to use the
namespace instead, but because I didn't break compatibility I am not sure.

On the REPL, `deno` no longer exists, replaced only with `Deno` to align with
the regular runtime.

The runtime type library includes both the namespace and module. This means it
duplicates the whole type information. When we remove the functionality from the
runtime, it will be a one line change to the library generator to remove the
module definition from the type library.

I marked a `TODO` in a couple places where to remove the `"deno"` module, but
there are additional places I know I didn't mark.
2019-02-12 10:08:56 -05:00

204 lines
7 KiB
TypeScript

// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import { testPerm, assert, assertEqual } from "./test_util.ts";
testPerm({ read: true, write: true }, function writeFileSyncSuccess() {
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);
assertEqual("Hello", actual);
});
testPerm({ write: true }, function writeFileSyncFail() {
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;
assertEqual(e.kind, Deno.ErrorKind.NotFound);
assertEqual(e.name, "NotFound");
}
assert(caughtError);
});
testPerm({ write: false }, function writeFileSyncPerm() {
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;
assertEqual(e.kind, Deno.ErrorKind.PermissionDenied);
assertEqual(e.name, "PermissionDenied");
}
assert(caughtError);
});
testPerm({ read: true, write: true }, function writeFileSyncUpdatePerm() {
if (Deno.platform.os !== "win") {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const filename = Deno.makeTempDirSync() + "/test.txt";
Deno.writeFileSync(filename, data, { perm: 0o755 });
assertEqual(Deno.statSync(filename).mode & 0o777, 0o755);
Deno.writeFileSync(filename, data, { perm: 0o666 });
assertEqual(Deno.statSync(filename).mode & 0o777, 0o666);
}
});
testPerm({ read: true, write: true }, function writeFileSyncCreate() {
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;
assertEqual(e.kind, Deno.ErrorKind.NotFound);
assertEqual(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);
assertEqual("Hello", actual);
});
testPerm({ read: true, write: true }, function writeFileSyncAppend() {
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);
assertEqual("HelloHello", actual);
// Now attempt overwrite
Deno.writeFileSync(filename, data, { append: false });
dataRead = Deno.readFileSync(filename);
actual = dec.decode(dataRead);
assertEqual("Hello", actual);
// append not set should also overwrite
Deno.writeFileSync(filename, data);
dataRead = Deno.readFileSync(filename);
actual = dec.decode(dataRead);
assertEqual("Hello", actual);
});
testPerm({ read: true, write: true }, async function writeFileSuccess() {
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);
assertEqual("Hello", actual);
});
testPerm({ read: true, write: true }, async function writeFileNotFound() {
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;
assertEqual(e.kind, Deno.ErrorKind.NotFound);
assertEqual(e.name, "NotFound");
}
assert(caughtError);
});
testPerm({ read: true, write: false }, async function writeFilePerm() {
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;
assertEqual(e.kind, Deno.ErrorKind.PermissionDenied);
assertEqual(e.name, "PermissionDenied");
}
assert(caughtError);
});
testPerm({ read: true, write: true }, async function writeFileUpdatePerm() {
if (Deno.platform.os !== "win") {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const filename = Deno.makeTempDirSync() + "/test.txt";
await Deno.writeFile(filename, data, { perm: 0o755 });
assertEqual(Deno.statSync(filename).mode & 0o777, 0o755);
await Deno.writeFile(filename, data, { perm: 0o666 });
assertEqual(Deno.statSync(filename).mode & 0o777, 0o666);
}
});
testPerm({ read: true, write: true }, async function writeFileCreate() {
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;
assertEqual(e.kind, Deno.ErrorKind.NotFound);
assertEqual(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);
assertEqual("Hello", actual);
});
testPerm({ read: true, write: true }, async function writeFileAppend() {
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);
assertEqual("HelloHello", actual);
// Now attempt overwrite
await Deno.writeFile(filename, data, { append: false });
dataRead = Deno.readFileSync(filename);
actual = dec.decode(dataRead);
assertEqual("Hello", actual);
// append not set should also overwrite
await Deno.writeFile(filename, data);
dataRead = Deno.readFileSync(filename);
actual = dec.decode(dataRead);
assertEqual("Hello", actual);
});