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Fix Issue #399 - added test cases for appendFile with promises

This commit is contained in:
Josh Mayers 2018-09-18 13:52:24 -04:00 committed by David Humphrey
parent 97a6004091
commit e85880dc8b
1 changed files with 165 additions and 0 deletions
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165
tests/spec/fs.appendFile.spec.js
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@ -125,3 +125,168 @@ describe('fs.appendFile', function() {
});
});
});
describe('fs.promises.appendFile', function() {
beforeEach(function(done) {
util.setup(function() {
var fs = util.fs();
fs.promises.writeFile('/myfile', 'This is a file.', { encoding: 'utf8' })
.then(done())
.catch(function (error)
{
throw error;
});
});
});
afterEach(util.cleanup);
it('should be a function', function() {
var fs = util.fs();
expect(fs.promises.appendFile).to.be.a('function');
});
it('should append a utf8 file without specifying utf8 in appendFile', function(done) {
var fs = util.fs();
var contents = 'This is a file.';
var more = ' Appended.';
fs.promises.appendFile('/myfile', more)
.then(function()
{
fs.readFile('/myfile', 'utf8', function(error, data) {
expect(error).not.to.exist;
expect(data).to.equal(contents + more);
done();
});
})
.catch(function(error)
{
throw error;
});
});
it('should append a utf8 file with "utf8" option to appendFile', function(done) {
var fs = util.fs();
var contents = 'This is a file.';
var more = ' Appended.';
fs.promises.appendFile('/myfile', more, 'utf8')
.then(function() {
fs.readFile('/myfile', 'utf8', function(error, data) {
expect(error).not.to.exist;
expect(data).to.equal(contents + more);
done();
});
})
.catch(function(error) {
throw error;
});
});
it('should append a utf8 file with {encoding: "utf8"} option to appendFile', function(done) {
var fs = util.fs();
var contents = 'This is a file.';
var more = ' Appended.';
fs.promises.appendFile('/myfile', more, { encoding: 'utf8' })
.then(function() {
fs.promises.readFile('/myfile', { encoding: 'utf8' })
.then(function(data, error)
{
expect(error).not.to.exist;
expect(data).to.equal(contents + more);
done();
})
.catch(function(error)
{
throw error;
});
})
.catch(function(error){
throw error;
});
});
it('should append a binary file', function(done) {
var fs = util.fs();
// String and utf8 binary encoded versions of the same thing: 'This is a file.'
var binary = new Buffer([84, 104, 105, 115, 32, 105, 115, 32, 97, 32, 102, 105, 108, 101, 46]);
var binary2 = new Buffer([32, 65, 112, 112, 101, 110, 100, 101, 100, 46]);
var binary3 = new Buffer([84, 104, 105, 115, 32, 105, 115, 32, 97, 32, 102, 105, 108, 101, 46,
32, 65, 112, 112, 101, 110, 100, 101, 100, 46]);
fs.promises.writeFile('/mybinaryfile', binary)
.then(function()
{
fs.promises.appendFile('/mybinaryfile', binary2)
.then(function()
{
fs.promises.readFile('/mybinaryfile', 'ascii')
.then(function(data, error)
{
expect(error).not.to.exist;
expect(data).to.deep.equal(binary3);
done();
});
})
.catch(function(error)
{
throw error;
});
})
.catch(function(error)
{
throw error;
});
});
it('should follow symbolic links', function(done) {
var fs = util.fs();
var contents = 'This is a file.';
var more = ' Appended.';
fs.symlink('/myfile', '/myFileLink', function (error) {
if (error) throw error;
fs.promises.appendFile('/myFileLink', more, 'utf8')
.then(function()
{
fs.promises.readFile('/myFileLink', 'utf8')
.then(function(data, error)
{
expect(error).not.to.exist;
expect(data).to.equal(contents + more);
done();
});
})
.catch(function(error)
{
throw error;
});
});
});
it('should work when file does not exist, and create the file', function(done) {
var fs = util.fs();
var contents = 'This is a file.';
fs.promises.appendFile('/newfile', contents, { encoding: 'utf8' })
.then(function(error)
{
expect(error).not.to.exist;
fs.promises.readFile('/newfile', 'utf8')
.then(function(data)
{
expect(data).to.equal(contents);
done();
})
.catch(function(err)
{
throw err;
});
});
});
});