diff --git a/tests/spec/fs.read.spec.js b/tests/spec/fs.read.spec.js index 1a57421..4b74bde 100644 --- a/tests/spec/fs.read.spec.js +++ b/tests/spec/fs.read.spec.js @@ -88,3 +88,87 @@ describe('fs.read', function() { }); }); }); + +describe('fs.promises.read', function() { + beforeEach(util.setup); + afterEach(util.cleanup); + + it('should be a function', function() { + var fsPromises = util.fs().promises; + expect(fsPromises.read).to.be.a('function'); + }); + + it('should return a promise', function() { + var fsPromises = util.fs().promises; + expect(fsPromises.read()).to.be.a('Promise'); + }); + it('should read data from a file', function() { + var fsPromises = util.fs().promises; + var wbuffer = new Filer.Buffer([1, 2, 3, 4, 5, 6, 7, 8]); + var rbuffer = new Filer.Buffer(wbuffer.length); + var fdesc; + rbuffer.fill(0); + + return fsPromises.open('/myfile', 'w+') + .then((fd)=>{ + fdesc=fd; + return fsPromises.write(fd, wbuffer, 0, wbuffer.length, 0); + }) + .then((result)=>{ + expect(result).to.equal(wbuffer.length); + return fsPromises.read(fdesc, rbuffer,0,rbuffer.length,0); + }) + .then((result)=>{ + expect(result).to.equal(rbuffer.length); + expect(wbuffer).to.deep.equal(rbuffer); + }) + ; + }); + + it('should update the current file position', function() { + var fsPromises = util.fs().promises; + var wbuffer = new Filer.Buffer([1, 2, 3, 4, 5, 6, 7, 8]); + var rbuffer = new Filer.Buffer(wbuffer.length); + rbuffer.fill(0); + var _result = 0; + var fdesc; + + return fsPromises.open('/myfile', 'w+') + .then((fd)=>{ + fdesc=fd; + return fsPromises.write(fd, wbuffer, 0, wbuffer.length, 0 ); + }) + .then((result)=>{ + expect(result).to.equal(wbuffer.length); + return fsPromises.read(fdesc, rbuffer, 0, rbuffer.length / 2, undefined); + }) + .then((result)=>{ + _result += result; + return fsPromises.read(fdesc,rbuffer,rbuffer.length / 2, rbuffer.length, undefined); + }) + .then((result)=>{ + _result+=result; + expect(_result).to.equal(rbuffer.length); + expect(wbuffer).to.deep.equal(rbuffer); + }) + ; + }); + + it('should fail to read a directory', function() { + var fsPromises = util.fs().promises; + var buf = new Filer.Buffer(20); + var buf2 = new Filer.Buffer(20); + buf.fill(0); + buf2.fill(0); + + return fsPromises.mkdir('/mydir') + .then(()=>fsPromises.open('/mydir', 'r')) + .then(fd=>fsPromises.read(fd, buf, 0, buf.length, 0)) + .catch((error)=>{ + expect(error).to.exist; + expect(error.code).to.equal('EISDIR'); + expect(buf).to.deep.equal(buf2); + }) + ; + }); +});