fs.js
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// if running on older node, ensure that es6-shim is loaded first
if (/^v0.10/.test(process.version)) { require('es6-shim'); }
var assert= require('../assert');
var fs = require('../fs');
var path = require('../path');
var TESTFILE = '/tmp/hello';
describe('fs module', function() {
it('write/read/unlink (callbacks)', function(done) {
fs.exists(TESTFILE, function(exists) {
if (exists) {
return done("Pre-existing file "+TESTFILE+"; aborting test.");
}
fs.writeFile(TESTFILE, 'hello', 'utf-8', function(err) {
if (err) { return done(err); }
fs.exists(TESTFILE, function(exists) {
if (!exists) {
return done(TESTFILE+" not found");
}
fs.readFile(TESTFILE, 'utf-8', function(err, contents) {
if (err) { return done(err); }
if (contents !== 'hello') {
return done("File contents are not right");
}
fs.unlink(TESTFILE, function(err) {
if (err) { return done(err); }
fs.exists(TESTFILE, function(exists) {
if (exists) {
return done("unlink didn't work");
}
done(/*success!*/);
});
});
});
});
});
});
});
it('write/read/unlink (promises)', function() {
return fs.exists(TESTFILE).then(function(exists) {
assert.equal(!!exists, false,
"Pre-existing file "+TESTFILE+"; aborting test.");
}).then(function() {
return fs.writeFile(TESTFILE, 'hello', 'utf-8');
}).then(function() {
return fs.exists(TESTFILE);
}).then(function(exists) {
assert.equal(!!exists, true);
return fs.readFile(TESTFILE, 'utf-8');
}).then(function(contents) {
assert.equal(contents, 'hello');
return fs.unlink(TESTFILE);
}).then(function() {
return fs.exists(TESTFILE);
}).then(function(exists) {
assert.equal(!!exists, false);
});
});
});