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// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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'use strict';
const common = require('../common');
const assert = require('assert');
const fs = require('fs');
const tmpdir = require('../common/tmpdir');
const currentFileData = 'ABCD';
const fixtures = require('../common/fixtures');
const s = fixtures.utf8TestText;
tmpdir.refresh();
const throwNextTick = (e) => { process.nextTick(() => { throw e; }); };
// Test that empty file will be created and have content added (callback API).
{
const filename = tmpdir.resolve('append.txt');
fs.appendFile(filename, s, common.mustSucceed(() => {
fs.readFile(filename, common.mustSucceed((buffer) => {
assert.strictEqual(Buffer.byteLength(s), buffer.length);
}));
}));
}
// Test that empty file will be created and have content added (promise API).
{
const filename = tmpdir.resolve('append-promise.txt');
fs.promises.appendFile(filename, s)
.then(common.mustCall(() => fs.promises.readFile(filename)))
.then((buffer) => {
assert.strictEqual(Buffer.byteLength(s), buffer.length);
})
.catch(throwNextTick);
}
// Test that appends data to a non-empty file (callback API).
{
const filename = tmpdir.resolve('append-non-empty.txt');
fs.writeFileSync(filename, currentFileData);
fs.appendFile(filename, s, common.mustSucceed(() => {
fs.readFile(filename, common.mustSucceed((buffer) => {
assert.strictEqual(Buffer.byteLength(s) + currentFileData.length,
buffer.length);
}));
}));
}
// Test that appends data to a non-empty file (promise API).
{
const filename = tmpdir.resolve('append-non-empty-promise.txt');
fs.writeFileSync(filename, currentFileData);
fs.promises.appendFile(filename, s)
.then(common.mustCall(() => fs.promises.readFile(filename)))
.then((buffer) => {
assert.strictEqual(Buffer.byteLength(s) + currentFileData.length,
buffer.length);
})
.catch(throwNextTick);
}
// Test that appendFile accepts buffers (callback API).
{
const filename = tmpdir.resolve('append-buffer.txt');
fs.writeFileSync(filename, currentFileData);
const buf = Buffer.from(s, 'utf8');
fs.appendFile(filename, buf, common.mustSucceed(() => {
fs.readFile(filename, common.mustSucceed((buffer) => {
assert.strictEqual(buf.length + currentFileData.length, buffer.length);
}));
}));
}
// Test that appendFile accepts buffers (promises API).
{
const filename = tmpdir.resolve('append-buffer-promises.txt');
fs.writeFileSync(filename, currentFileData);
const buf = Buffer.from(s, 'utf8');
fs.promises.appendFile(filename, buf)
.then(common.mustCall(() => fs.promises.readFile(filename)))
.then((buffer) => {
assert.strictEqual(buf.length + currentFileData.length, buffer.length);
})
.catch(throwNextTick);
}
// Test that appendFile does not accept invalid data type (callback API).
[false, 5, {}, null, undefined].forEach(async (data) => {
const errObj = {
code: 'ERR_INVALID_ARG_TYPE',
message: /"data"|"buffer"/
};
const filename = tmpdir.resolve('append-invalid-data.txt');
assert.throws(
() => fs.appendFile(filename, data, common.mustNotCall()),
errObj
);
assert.throws(
() => fs.appendFileSync(filename, data),
errObj
);
await assert.rejects(
fs.promises.appendFile(filename, data),
errObj
);
// The filename shouldn't exist if throwing error.
assert.throws(
() => fs.statSync(filename),
{
code: 'ENOENT',
message: /no such file or directory/
}
);
});
// Test that appendFile accepts file descriptors (callback API).
{
const filename = tmpdir.resolve('append-descriptors.txt');
fs.writeFileSync(filename, currentFileData);
fs.open(filename, 'a+', common.mustSucceed((fd) => {
fs.appendFile(fd, s, common.mustSucceed(() => {
fs.close(fd, common.mustSucceed(() => {
fs.readFile(filename, common.mustSucceed((buffer) => {
assert.strictEqual(Buffer.byteLength(s) + currentFileData.length,
buffer.length);
}));
}));
}));
}));
}
// Test that appendFile accepts file descriptors (promises API).
{
const filename = tmpdir.resolve('append-descriptors-promises.txt');
fs.writeFileSync(filename, currentFileData);
let fd;
fs.promises.open(filename, 'a+')
.then(common.mustCall((fileDescriptor) => {
fd = fileDescriptor;
return fs.promises.appendFile(fd, s);
}))
.then(common.mustCall(() => fd.close()))
.then(common.mustCall(() => fs.promises.readFile(filename)))
.then(common.mustCall((buffer) => {
assert.strictEqual(Buffer.byteLength(s) + currentFileData.length,
buffer.length);
}))
.catch(throwNextTick);
}
assert.throws(
() => fs.appendFile(tmpdir.resolve('append6.txt'), console.log),
{ code: 'ERR_INVALID_ARG_TYPE' });
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