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'use strict';
const common = require('../common');
const assert = require('assert');
const fs = require('fs');
const currentFileData = 'ABCD';
const m = 0o600;
const num = 220;
const tmpdir = require('../common/tmpdir');
const fixtures = require('../common/fixtures');
const data = fixtures.utf8TestText;
tmpdir.refresh();
// Test that empty file will be created and have content added.
const filename = tmpdir.resolve('append-sync.txt');
fs.appendFileSync(filename, data);
const fileData = fs.readFileSync(filename);
assert.strictEqual(Buffer.byteLength(data), fileData.length);
// Test that appends data to a non empty file.
const filename2 = tmpdir.resolve('append-sync2.txt');
fs.writeFileSync(filename2, currentFileData);
fs.appendFileSync(filename2, data);
const fileData2 = fs.readFileSync(filename2);
assert.strictEqual(Buffer.byteLength(data) + currentFileData.length,
fileData2.length);
// Test that appendFileSync accepts buffers.
const filename3 = tmpdir.resolve('append-sync3.txt');
fs.writeFileSync(filename3, currentFileData);
const buf = Buffer.from(data, 'utf8');
fs.appendFileSync(filename3, buf);
const fileData3 = fs.readFileSync(filename3);
assert.strictEqual(buf.length + currentFileData.length, fileData3.length);
const filename4 = tmpdir.resolve('append-sync4.txt');
fs.writeFileSync(filename4, currentFileData, common.mustNotMutateObjectDeep({ mode: m }));
[
true, false, 0, 1, Infinity, () => {}, {}, [], undefined, null,
].forEach((value) => {
assert.throws(
() => fs.appendFileSync(filename4, value, common.mustNotMutateObjectDeep({ mode: m })),
{ message: /data/, code: 'ERR_INVALID_ARG_TYPE' }
);
});
fs.appendFileSync(filename4, `${num}`, common.mustNotMutateObjectDeep({ mode: m }));
// Windows permissions aren't Unix.
if (!common.isWindows) {
const st = fs.statSync(filename4);
assert.strictEqual(st.mode & 0o700, m);
}
const fileData4 = fs.readFileSync(filename4);
assert.strictEqual(Buffer.byteLength(String(num)) + currentFileData.length,
fileData4.length);
// Test that appendFile accepts file descriptors.
const filename5 = tmpdir.resolve('append-sync5.txt');
fs.writeFileSync(filename5, currentFileData);
const filename5fd = fs.openSync(filename5, 'a+', 0o600);
fs.appendFileSync(filename5fd, data);
fs.closeSync(filename5fd);
const fileData5 = fs.readFileSync(filename5);
assert.strictEqual(Buffer.byteLength(data) + currentFileData.length,
fileData5.length);
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