import * as assert from 'assert' import { checkEncoded } from './helpers' import * as Automerge from '../src' import { encodeChange, decodeChange } from '../src' describe('change encoding', () => { it('should encode text edits', () => { /* const change1 = {actor: 'aaaa', seq: 1, startOp: 1, time: 9, message: '', deps: [], ops: [ {action: 'makeText', obj: '_root', key: 'text', insert: false, pred: []}, {action: 'set', obj: '1@aaaa', elemId: '_head', insert: true, value: 'h', pred: []}, {action: 'del', obj: '1@aaaa', elemId: '2@aaaa', insert: false, pred: ['2@aaaa']}, {action: 'set', obj: '1@aaaa', elemId: '_head', insert: true, value: 'H', pred: []}, {action: 'set', obj: '1@aaaa', elemId: '4@aaaa', insert: true, value: 'i', pred: []} ]} */ const change1 = {actor: 'aaaa', seq: 1, startOp: 1, time: 9, message: null, deps: [], ops: [ {action: 'makeText', obj: '_root', key: 'text', pred: []}, {action: 'set', obj: '1@aaaa', elemId: '_head', insert: true, value: 'h', pred: []}, {action: 'del', obj: '1@aaaa', elemId: '2@aaaa', pred: ['2@aaaa']}, {action: 'set', obj: '1@aaaa', elemId: '_head', insert: true, value: 'H', pred: []}, {action: 'set', obj: '1@aaaa', elemId: '4@aaaa', insert: true, value: 'i', pred: []} ]} checkEncoded(encodeChange(change1), [ 0x85, 0x6f, 0x4a, 0x83, // magic bytes 0xe2, 0xbd, 0xfb, 0xf5, // checksum 1, 94, 0, 2, 0xaa, 0xaa, // chunkType: change, length, deps, actor 'aaaa' 1, 1, 9, 0, 0, // seq, startOp, time, message, actor list 12, 0x01, 4, 0x02, 4, // column count, objActor, objCtr 0x11, 8, 0x13, 7, 0x15, 8, // keyActor, keyCtr, keyStr 0x34, 4, 0x42, 6, // insert, action 0x56, 6, 0x57, 3, // valLen, valRaw 0x70, 6, 0x71, 2, 0x73, 2, // predNum, predActor, predCtr 0, 1, 4, 0, // objActor column: null, 0, 0, 0, 0 0, 1, 4, 1, // objCtr column: null, 1, 1, 1, 1 0, 2, 0x7f, 0, 0, 1, 0x7f, 0, // keyActor column: null, null, 0, null, 0 0, 1, 0x7c, 0, 2, 0x7e, 4, // keyCtr column: null, 0, 2, 0, 4 0x7f, 4, 0x74, 0x65, 0x78, 0x74, 0, 4, // keyStr column: 'text', null, null, null, null 1, 1, 1, 2, // insert column: false, true, false, true, true 0x7d, 4, 1, 3, 2, 1, // action column: makeText, set, del, set, set 0x7d, 0, 0x16, 0, 2, 0x16, // valLen column: 0, 0x16, 0, 0x16, 0x16 0x68, 0x48, 0x69, // valRaw column: 'h', 'H', 'i' 2, 0, 0x7f, 1, 2, 0, // predNum column: 0, 0, 1, 0, 0 0x7f, 0, // predActor column: 0 0x7f, 2 // predCtr column: 2 ]) const decoded = decodeChange(encodeChange(change1)) assert.deepStrictEqual(decoded, Object.assign({hash: decoded.hash}, change1)) }) // FIXME - skipping this b/c it was never implemented in the rust impl and isnt trivial /* it.skip('should require strict ordering of preds', () => { const change = new Uint8Array([ 133, 111, 74, 131, 31, 229, 112, 44, 1, 105, 1, 58, 30, 190, 100, 253, 180, 180, 66, 49, 126, 81, 142, 10, 3, 35, 140, 189, 231, 34, 145, 57, 66, 23, 224, 149, 64, 97, 88, 140, 168, 194, 229, 4, 244, 209, 58, 138, 67, 140, 1, 152, 236, 250, 2, 0, 1, 4, 55, 234, 66, 242, 8, 21, 11, 52, 1, 66, 2, 86, 3, 87, 10, 112, 2, 113, 3, 115, 4, 127, 9, 99, 111, 109, 109, 111, 110, 86, 97, 114, 1, 127, 1, 127, 166, 1, 52, 48, 57, 49, 52, 57, 52, 53, 56, 50, 127, 2, 126, 0, 1, 126, 139, 1, 0 ]) assert.throws(() => { decodeChange(change) }, /operation IDs are not in ascending order/) }) */ describe('with trailing bytes', () => { let change = new Uint8Array([ 0x85, 0x6f, 0x4a, 0x83, // magic bytes 0xb2, 0x98, 0x9e, 0xa9, // checksum 1, 61, 0, 2, 0x12, 0x34, // chunkType: change, length, deps, actor '1234' 1, 1, 252, 250, 220, 255, 5, // seq, startOp, time 14, 73, 110, 105, 116, 105, 97, 108, 105, 122, 97, 116, 105, 111, 110, // message: 'Initialization' 0, 6, // actor list, column count 0x15, 3, 0x34, 1, 0x42, 2, // keyStr, insert, action 0x56, 2, 0x57, 1, 0x70, 2, // valLen, valRaw, predNum 0x7f, 1, 0x78, // keyStr: 'x' 1, // insert: false 0x7f, 1, // action: set 0x7f, 19, // valLen: 1 byte of type uint 1, // valRaw: 1 0x7f, 0, // predNum: 0 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 // 10 trailing bytes ]) it('should allow decoding and re-encoding', () => { // NOTE: This calls the JavaScript encoding and decoding functions, even when the WebAssembly // backend is loaded. Should the wasm backend export its own functions for testing? checkEncoded(change, encodeChange(decodeChange(change))) }) it('should be preserved in document encoding', () => { const [doc] = Automerge.applyChanges(Automerge.init(), [change]) const [reconstructed] = Automerge.getAllChanges(Automerge.load(Automerge.save(doc))) checkEncoded(change, reconstructed) }) }) })