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fix #556: added tests for fs.ftruncate method (#557) 

* fix #556: added tests for fs.ftruncate method

* Update fs.ftruncate.spec.js
This commit is contained in:
yatsenko-julia 2018-11-28 22:42:17 -05:00 committed by David Humphrey
parent 89cfef0f07
commit f57c7330d3
1 changed files with 59 additions and 0 deletions
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59
tests/spec/fs.ftruncate.spec.js
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@ -130,4 +130,63 @@ describe('fs.ftruncate', function() {
});
});
});
it('should assume a length of 0 if passed undefined', function(done) {
var fs = util.fs();
var buffer = new Buffer([1, 2, 3, 4, 5, 6, 7, 8]);
fs.open('/myfile', 'w', function(error, result) {
if(error) throw error;
var fd = result;
fs.write(fd, buffer, 0, buffer.length, 0, function(error, result) {
if(error) throw error;
expect(result).to.equal(buffer.length);
// Pass undefined to see that it defaults to 0
fs.ftruncate(fd, undefined, function(error) {
expect(error).not.to.exist;
fs.stat('/myfile', function(error, result) {
if(error) throw error;
expect(result.size).to.equal(0);
done();
});
});
// Close file descriptor
fs.close(fd);
});
});
});
it('should update the file size', function(done) {
var fs = util.fs();
var buffer = new Buffer([1, 2, 3, 4, 5, 6, 7, 8]);
fs.open('/myfile', 'w', function(error, result) {
if(error) throw error;
var fd = result;
fs.write(fd, buffer, 0, buffer.length, 0, function(error, result) {
if(error) throw error;
expect(result).to.equal(buffer.length);
fs.ftruncate(fd, 0, function(error) {
expect(error).not.to.exist;
fs.stat('/myfile', function(error, result) {
if(error) throw error;
expect(result.size).to.equal(0);
done();
});
});
// Close file descriptor
fs.close(fd);
});
});
});
});