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'use strict';
const common = require('../common');
const assert = require('assert');
const fs = require('fs');
const path = require('path');
const tmpdir = require('../common/tmpdir');
const testDir = tmpdir.path;
const files = ['empty', 'files', 'for', 'just', 'testing'];
// Make sure tmp directory is clean
tmpdir.refresh();
// Create the necessary files
files.forEach(function(filename) {
fs.closeSync(fs.openSync(path.join(testDir, filename), 'w'));
});
function assertDirent(dirent) {
assert(dirent instanceof fs.Dirent);
assert.strictEqual(dirent.isFile(), true);
assert.strictEqual(dirent.isDirectory(), false);
assert.strictEqual(dirent.isSocket(), false);
assert.strictEqual(dirent.isBlockDevice(), false);
assert.strictEqual(dirent.isCharacterDevice(), false);
assert.strictEqual(dirent.isFIFO(), false);
assert.strictEqual(dirent.isSymbolicLink(), false);
}
const dirclosedError = {
code: 'ERR_DIR_CLOSED'
};
const invalidCallbackObj = {
code: 'ERR_INVALID_CALLBACK',
name: 'TypeError'
};
// Check the opendir Sync version
{
const dir = fs.opendirSync(testDir);
const entries = files.map(() => {
const dirent = dir.readSync();
assertDirent(dirent);
return dirent.name;
});
assert.deepStrictEqual(files, entries.sort());
// dir.read should return null when no more entries exist
assert.strictEqual(dir.readSync(), null);
// check .path
assert.strictEqual(dir.path, testDir);
dir.closeSync();
assert.throws(() => dir.readSync(), dirclosedError);
assert.throws(() => dir.closeSync(), dirclosedError);
}
// Check the opendir async version
fs.opendir(testDir, common.mustCall(function(err, dir) {
assert.ifError(err);
let sync = true;
dir.read(common.mustCall((err, dirent) => {
assert(!sync);
assert.ifError(err);
// Order is operating / file system dependent
assert(files.includes(dirent.name), `'files' should include ${dirent}`);
assertDirent(dirent);
let syncInner = true;
dir.read(common.mustCall((err, dirent) => {
assert(!syncInner);
assert.ifError(err);
dir.close(common.mustCall(function(err) {
assert.ifError(err);
}));
}));
syncInner = false;
}));
sync = false;
}));
// opendir() on file should throw ENOTDIR
assert.throws(function() {
fs.opendirSync(__filename);
}, /Error: ENOTDIR: not a directory/);
assert.throws(function() {
fs.opendir(__filename);
}, /TypeError \[ERR_INVALID_CALLBACK\]: Callback must be a function/);
fs.opendir(__filename, common.mustCall(function(e) {
assert.strictEqual(e.code, 'ENOTDIR');
}));
[false, 1, [], {}, null, undefined].forEach((i) => {
common.expectsError(
() => fs.opendir(i, common.mustNotCall()),
{
code: 'ERR_INVALID_ARG_TYPE',
type: TypeError
}
);
common.expectsError(
() => fs.opendirSync(i),
{
code: 'ERR_INVALID_ARG_TYPE',
type: TypeError
}
);
});
// Promise-based tests
async function doPromiseTest() {
// Check the opendir Promise version
const dir = await fs.promises.opendir(testDir);
const entries = [];
let i = files.length;
while (i--) {
const dirent = await dir.read();
entries.push(dirent.name);
assertDirent(dirent);
}
assert.deepStrictEqual(files, entries.sort());
// dir.read should return null when no more entries exist
assert.strictEqual(await dir.read(), null);
await dir.close();
}
doPromiseTest().then(common.mustCall());
// Async iterator
async function doAsyncIterTest() {
const entries = [];
for await (const dirent of await fs.promises.opendir(testDir)) {
entries.push(dirent.name);
assertDirent(dirent);
}
assert.deepStrictEqual(files, entries.sort());
// Automatically closed during iterator
}
doAsyncIterTest().then(common.mustCall());
// Async iterators should do automatic cleanup
async function doAsyncIterBreakTest() {
const dir = await fs.promises.opendir(testDir);
for await (const dirent of dir) { // eslint-disable-line no-unused-vars
break;
}
await assert.rejects(async () => dir.read(), dirclosedError);
}
doAsyncIterBreakTest().then(common.mustCall());
async function doAsyncIterReturnTest() {
const dir = await fs.promises.opendir(testDir);
await (async function() {
for await (const dirent of dir) { // eslint-disable-line no-unused-vars
return;
}
})();
await assert.rejects(async () => dir.read(), dirclosedError);
}
doAsyncIterReturnTest().then(common.mustCall());
async function doAsyncIterThrowTest() {
const dir = await fs.promises.opendir(testDir);
try {
for await (const dirent of dir) { // eslint-disable-line no-unused-vars
throw new Error('oh no');
}
} catch (err) {
if (err.message !== 'oh no') {
throw err;
}
}
await assert.rejects(async () => dir.read(), dirclosedError);
}
doAsyncIterThrowTest().then(common.mustCall());
// Check error thrown on invalid values of bufferSize
for (const bufferSize of [-1, 0, 0.5, 1.5, Infinity, NaN]) {
assert.throws(
() => fs.opendirSync(testDir, { bufferSize }),
{
code: 'ERR_OUT_OF_RANGE'
});
}
for (const bufferSize of ['', '1', null]) {
assert.throws(
() => fs.opendirSync(testDir, { bufferSize }),
{
code: 'ERR_INVALID_ARG_TYPE'
});
}
// Check that passing a positive integer as bufferSize works
{
const dir = fs.opendirSync(testDir, { bufferSize: 1024 });
assertDirent(dir.readSync());
dir.close();
}
// Check that when passing a string instead of function - throw an exception
async function doAsyncIterInvalidCallbackTest() {
const dir = await fs.promises.opendir(testDir);
assert.throws(() => dir.close('not function'), invalidCallbackObj);
}
doAsyncIterInvalidCallbackTest().then(common.mustCall());
// Check if directory already closed - throw an exception
async function doAsyncIterDirClosedTest() {
const dir = await fs.promises.opendir(testDir);
await dir.close();
assert.throws(() => dir.close(), dirclosedError);
}
doAsyncIterDirClosedTest().then(common.mustCall());
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