descargar pdf y fotos
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+533
@@ -0,0 +1,533 @@
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const {VersionedStruct, String:StringT, Pointer, uint8, DecodeStream, EncodeStream} = require('../');
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const should = require('chai').should();
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const concat = require('concat-stream');
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describe('VersionedStruct', function() {
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describe('decode', function() {
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it('should get version from number type', function() {
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const struct = new VersionedStruct(uint8, {
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0: {
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name: new StringT(uint8, 'ascii'),
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age: uint8
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},
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1: {
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name: new StringT(uint8, 'utf8'),
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age: uint8,
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gender: uint8
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}
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}
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);
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let stream = new DecodeStream(Buffer.from('\x00\x05devon\x15'));
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struct.decode(stream).should.deep.equal({
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version: 0,
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name: 'devon',
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age: 21
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});
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stream = new DecodeStream(Buffer.from('\x01\x0adevon 👍\x15\x00', 'utf8'));
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return struct.decode(stream).should.deep.equal({
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version: 1,
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name: 'devon 👍',
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age: 21,
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gender: 0
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});
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});
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it('should throw for unknown version', function() {
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const struct = new VersionedStruct(uint8, {
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0: {
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name: new StringT(uint8, 'ascii'),
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age: uint8
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},
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1: {
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name: new StringT(uint8, 'utf8'),
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age: uint8,
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gender: uint8
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}
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}
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);
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const stream = new DecodeStream(Buffer.from('\x05\x05devon\x15'));
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return should.throw(() => struct.decode(stream));
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});
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it('should support common header block', function() {
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const struct = new VersionedStruct(uint8, {
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header: {
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age: uint8,
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alive: uint8
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},
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0: {
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name: new StringT(uint8, 'ascii')
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},
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1: {
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name: new StringT(uint8, 'utf8'),
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gender: uint8
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}
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}
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);
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let stream = new DecodeStream(Buffer.from('\x00\x15\x01\x05devon'));
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struct.decode(stream).should.deep.equal({
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version: 0,
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age: 21,
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alive: 1,
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name: 'devon'
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});
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stream = new DecodeStream(Buffer.from('\x01\x15\x01\x0adevon 👍\x00', 'utf8'));
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return struct.decode(stream).should.deep.equal({
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version: 1,
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age: 21,
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alive: 1,
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name: 'devon 👍',
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gender: 0
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});
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});
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it('should support parent version key', function() {
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const struct = new VersionedStruct('version', {
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0: {
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name: new StringT(uint8, 'ascii'),
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age: uint8
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},
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1: {
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name: new StringT(uint8, 'utf8'),
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age: uint8,
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gender: uint8
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}
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}
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);
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let stream = new DecodeStream(Buffer.from('\x05devon\x15'));
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struct.decode(stream, {version: 0}).should.deep.equal({
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version: 0,
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name: 'devon',
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age: 21
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});
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stream = new DecodeStream(Buffer.from('\x0adevon 👍\x15\x00', 'utf8'));
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return struct.decode(stream, {version: 1}).should.deep.equal({
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version: 1,
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name: 'devon 👍',
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age: 21,
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gender: 0
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});
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});
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it('should support parent version nested key', function() {
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const struct = new VersionedStruct('obj.version', {
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0: {
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name: new StringT(uint8, 'ascii'),
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age: uint8
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},
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1: {
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name: new StringT(uint8, 'utf8'),
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age: uint8,
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gender: uint8
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}
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}
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);
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let stream = new DecodeStream(Buffer.from('\x05devon\x15'));
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struct.decode(stream, {obj: {version: 0}}).should.deep.equal({
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version: 0,
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name: 'devon',
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age: 21
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});
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stream = new DecodeStream(Buffer.from('\x0adevon 👍\x15\x00', 'utf8'));
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return struct.decode(stream, {obj: {version: 1}}).should.deep.equal({
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version: 1,
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name: 'devon 👍',
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age: 21,
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gender: 0
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});
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});
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it('should support sub versioned structs', function() {
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const struct = new VersionedStruct(uint8, {
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0: {
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name: new StringT(uint8, 'ascii'),
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age: uint8
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},
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1: new VersionedStruct(uint8, {
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0: {
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name: new StringT(uint8)
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},
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1: {
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name: new StringT(uint8),
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isDesert: uint8
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}
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}
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)
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}
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);
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let stream = new DecodeStream(Buffer.from('\x00\x05devon\x15'));
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struct.decode(stream, {version: 0}).should.deep.equal({
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version: 0,
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name: 'devon',
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age: 21
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});
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stream = new DecodeStream(Buffer.from('\x01\x00\x05pasta'));
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struct.decode(stream, {version: 0}).should.deep.equal({
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version: 0,
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name: 'pasta'
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});
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stream = new DecodeStream(Buffer.from('\x01\x01\x09ice cream\x01'));
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return struct.decode(stream, {version: 0}).should.deep.equal({
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version: 1,
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name: 'ice cream',
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isDesert: 1
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});
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});
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return it('should support process hook', function() {
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const struct = new VersionedStruct(uint8, {
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0: {
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name: new StringT(uint8, 'ascii'),
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age: uint8
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},
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1: {
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name: new StringT(uint8, 'utf8'),
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age: uint8,
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gender: uint8
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}
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}
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);
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struct.process = function() {
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return this.processed = true;
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};
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const stream = new DecodeStream(Buffer.from('\x00\x05devon\x15'));
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return struct.decode(stream).should.deep.equal({
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version: 0,
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name: 'devon',
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age: 21,
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processed: true
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});
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});
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});
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describe('size', function() {
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it('should compute the correct size', function() {
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const struct = new VersionedStruct(uint8, {
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0: {
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name: new StringT(uint8, 'ascii'),
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age: uint8
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},
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1: {
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name: new StringT(uint8, 'utf8'),
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age: uint8,
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gender: uint8
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}
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}
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);
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let size = struct.size({
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version: 0,
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name: 'devon',
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age: 21
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});
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size.should.equal(8);
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size = struct.size({
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version: 1,
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name: 'devon 👍',
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age: 21,
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gender: 0
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});
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return size.should.equal(14);
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});
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it('should throw for unknown version', function() {
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const struct = new VersionedStruct(uint8, {
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0: {
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name: new StringT(uint8, 'ascii'),
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age: uint8
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},
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1: {
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name: new StringT(uint8, 'utf8'),
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age: uint8,
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gender: uint8
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}
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}
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);
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return should.throw(() =>
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struct.size({
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version: 5,
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name: 'devon',
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age: 21
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})
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);
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});
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it('should support common header block', function() {
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const struct = new VersionedStruct(uint8, {
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header: {
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age: uint8,
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alive: uint8
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},
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0: {
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name: new StringT(uint8, 'ascii')
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},
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1: {
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name: new StringT(uint8, 'utf8'),
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gender: uint8
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}
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}
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);
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let size = struct.size({
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version: 0,
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age: 21,
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alive: 1,
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name: 'devon'
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});
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size.should.equal(9);
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size = struct.size({
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version: 1,
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age: 21,
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alive: 1,
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name: 'devon 👍',
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gender: 0
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});
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return size.should.equal(15);
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});
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it('should compute the correct size with pointers', function() {
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const struct = new VersionedStruct(uint8, {
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0: {
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name: new StringT(uint8, 'ascii'),
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age: uint8
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},
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1: {
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name: new StringT(uint8, 'utf8'),
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age: uint8,
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ptr: new Pointer(uint8, new StringT(uint8))
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}
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}
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);
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const size = struct.size({
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version: 1,
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name: 'devon',
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age: 21,
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ptr: 'hello'
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});
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return size.should.equal(15);
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});
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return it('should throw if no value is given', function() {
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const struct = new VersionedStruct(uint8, {
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0: {
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name: new StringT(4, 'ascii'),
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age: uint8
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},
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1: {
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name: new StringT(4, 'utf8'),
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age: uint8,
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gender: uint8
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}
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}
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);
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return should.throw(() => struct.size()
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, /not a fixed size/i);
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});
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});
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return describe('encode', function() {
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it('should encode objects to buffers', function(done) {
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const struct = new VersionedStruct(uint8, {
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0: {
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name: new StringT(uint8, 'ascii'),
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age: uint8
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},
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1: {
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name: new StringT(uint8, 'utf8'),
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age: uint8,
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gender: uint8
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}
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}
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);
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const stream = new EncodeStream;
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stream.pipe(concat(function(buf) {
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buf.should.deep.equal(Buffer.from('\x00\x05devon\x15\x01\x0adevon 👍\x15\x00', 'utf8'));
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return done();
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})
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);
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struct.encode(stream, {
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version: 0,
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name: 'devon',
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age: 21
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}
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);
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struct.encode(stream, {
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version: 1,
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name: 'devon 👍',
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age: 21,
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gender: 0
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}
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);
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return stream.end();
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});
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it('should throw for unknown version', function() {
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const struct = new VersionedStruct(uint8, {
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0: {
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name: new StringT(uint8, 'ascii'),
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age: uint8
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},
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1: {
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name: new StringT(uint8, 'utf8'),
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age: uint8,
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gender: uint8
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}
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}
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);
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const stream = new EncodeStream;
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return should.throw(() =>
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struct.encode(stream, {
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version: 5,
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name: 'devon',
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age: 21
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}
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)
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);
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});
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it('should support common header block', function(done) {
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const struct = new VersionedStruct(uint8, {
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header: {
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age: uint8,
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alive: uint8
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},
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0: {
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name: new StringT(uint8, 'ascii')
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},
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1: {
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name: new StringT(uint8, 'utf8'),
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gender: uint8
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}
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}
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);
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const stream = new EncodeStream;
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stream.pipe(concat(function(buf) {
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buf.should.deep.equal(Buffer.from('\x00\x15\x01\x05devon\x01\x15\x01\x0adevon 👍\x00', 'utf8'));
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return done();
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})
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);
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struct.encode(stream, {
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version: 0,
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age: 21,
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alive: 1,
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name: 'devon'
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}
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);
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struct.encode(stream, {
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version: 1,
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age: 21,
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alive: 1,
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name: 'devon 👍',
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gender: 0
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}
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);
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return stream.end();
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});
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it('should encode pointer data after structure', function(done) {
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const struct = new VersionedStruct(uint8, {
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0: {
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name: new StringT(uint8, 'ascii'),
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age: uint8
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},
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1: {
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name: new StringT(uint8, 'utf8'),
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age: uint8,
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ptr: new Pointer(uint8, new StringT(uint8))
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}
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}
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);
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const stream = new EncodeStream;
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stream.pipe(concat(function(buf) {
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buf.should.deep.equal(Buffer.from('\x01\x05devon\x15\x09\x05hello', 'utf8'));
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return done();
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})
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);
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struct.encode(stream, {
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version: 1,
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name: 'devon',
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age: 21,
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ptr: 'hello'
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}
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);
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return stream.end();
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});
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return it('should support preEncode hook', function(done) {
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const struct = new VersionedStruct(uint8, {
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0: {
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name: new StringT(uint8, 'ascii'),
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age: uint8
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},
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1: {
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name: new StringT(uint8, 'utf8'),
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age: uint8,
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gender: uint8
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}
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}
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);
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struct.preEncode = function() {
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return this.version = (this.gender != null) ? 1 : 0;
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};
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const stream = new EncodeStream;
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stream.pipe(concat(function(buf) {
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buf.should.deep.equal(Buffer.from('\x00\x05devon\x15\x01\x0adevon 👍\x15\x00', 'utf8'));
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return done();
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})
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);
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struct.encode(stream, {
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name: 'devon',
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age: 21
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}
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);
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struct.encode(stream, {
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name: 'devon 👍',
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age: 21,
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gender: 0
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}
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);
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return stream.end();
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});
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||||
});
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||||
});
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Block a user