define(["IDBFS"], function(IDBFS) { describe('fs.lseek', function() { beforeEach(function() { this.db_name = mk_db_name(); this.fs = new IDBFS.FileSystem({ name: this.db_name, flags: 'FORMAT' }); }); afterEach(function() { indexedDB.deleteDatabase(this.db_name); delete this.fs; }); it('should be a function', function() { expect(typeof this.fs.lseek).toEqual('function'); }); it('should not follow symbolic links', function () { var complete = false; var _error, _stats; var that = this; that.fs.open('/myfile', 'w', function (error, result) { if (error) throw error; var fd = result; that.fs.close(fd, function (error) { if (error) throw error; that.fs.symlink('/myfile', '/myFileLink', function (error) { if (error) throw error; that.fs.rename('/myFileLink', '/myOtherFileLink', function (error) { if (error) throw error; that.fs.stat('/myfile', function (error, result) { _error1 = error; that.fs.lstat('/myFileLink', function (error, result) { _error2 = error; that.fs.stat('/myOtherFileLink', function (error, result) { if (error) throw error; _stats = result; complete = true; }); }); }); }); }); }); }); waitsFor(function () { return complete; }, 'test to complete', DEFAULT_TIMEOUT); runs(function () { expect(_error1).toEqual(null); expect(_error2).toBeDefined(); expect(_stats.nlinks).toEqual(1); }); }); it('should set the current position if whence is SET', function() { var complete = false; var _error, _result, _stats; var that = this; var offset = 3; var buffer = new Uint8Array([1, 2, 3, 4, 5, 6, 7, 8]); var result_buffer = new Uint8Array(buffer.length + offset); that.fs.open('/myfile', 'w+', function(error, result) { if(error) throw error; var fd = result; that.fs.write(fd, buffer, 0, buffer.length, undefined, function(error, result) { if(error) throw error; that.fs.lseek(fd, offset, 'SET', function(error, result) { _error = error; _result = result; that.fs.write(fd, buffer, 0, buffer.length, undefined, function(error, result) { if(error) throw error; that.fs.read(fd, result_buffer, 0, result_buffer.length, 0, function(error, result) { if(error) throw error; that.fs.stat('/myfile', function(error, result) { if(error) throw error; _stats = result; complete = true; }); }); }); }); }); }); waitsFor(function() { return complete; }, 'test to complete', DEFAULT_TIMEOUT); runs(function() { expect(_error).toEqual(null); expect(_result).toEqual(offset); expect(_stats.size).toEqual(offset + buffer.length); var expected = new Uint8Array([1, 2, 3, 1, 2, 3, 4, 5, 6, 7, 8]); expect(typed_array_equal(result_buffer, expected)).toEqual(true); }); }); it('should update the current position if whence is CUR', function() { var complete = false; var _error, _result, _stats; var that = this; var offset = -2; var buffer = new Uint8Array([1, 2, 3, 4, 5, 6, 7, 8]); var result_buffer = new Uint8Array(2 * buffer.length + offset); that.fs.open('/myfile', 'w+', function(error, result) { if(error) throw error; var fd = result; that.fs.write(fd, buffer, 0, buffer.length, undefined, function(error, result) { if(error) throw error; that.fs.lseek(fd, offset, 'CUR', function(error, result) { _error = error; _result = result; that.fs.write(fd, buffer, 0, buffer.length, undefined, function(error, result) { if(error) throw error; that.fs.read(fd, result_buffer, 0, result_buffer.length, 0, function(error, result) { if(error) throw error; that.fs.stat('/myfile', function(error, result) { if(error) throw error; _stats = result; complete = true; }); }); }); }); }); }); waitsFor(function() { return complete; }, 'test to complete', DEFAULT_TIMEOUT); runs(function() { expect(_error).toEqual(null); expect(_result).toEqual(offset + buffer.length); expect(_stats.size).toEqual(offset + 2 * buffer.length); var expected = new Uint8Array([1, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6, 7, 8]); expect(typed_array_equal(result_buffer, expected)).toEqual(true); }); }); it('should update the current position if whence is END', function() { var complete = false; var _error, _result, _stats; var that = this; var offset = 5; var buffer = new Uint8Array([1, 2, 3, 4, 5, 6, 7, 8]); var result_buffer; that.fs.open('/myfile', 'w+', function(error, result) { if(error) throw error; var fd1 = result; that.fs.write(fd1, buffer, 0, buffer.length, undefined, function(error, result) { if(error) throw error; that.fs.open('/myfile', 'w+', function(error, result) { if(error) throw error; var fd2 = result; that.fs.lseek(fd2, offset, 'END', function(error, result) { _error = error; _result = result; that.fs.write(fd2, buffer, 0, buffer.length, undefined, function(error, result) { if(error) throw error; that.fs.stat('/myfile', function(error, result) { if(error) throw error; _stats = result; result_buffer = new Uint8Array(_stats.size); that.fs.read(fd2, result_buffer, 0, result_buffer.length, 0, function(error, result) { if(error) throw error; complete = true; }); }); }); }); }); }); }); waitsFor(function() { return complete; }, 'test to complete', DEFAULT_TIMEOUT); runs(function() { expect(_error).toEqual(null); expect(_result).toEqual(offset + buffer.length); expect(_stats.size).toEqual(offset + 2 * buffer.length); var expected = new Uint8Array([1, 2, 3, 4, 5, 6, 7, 8, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8]); expect(typed_array_equal(result_buffer, expected)).toEqual(true); }); }); }); });