core-graphics/lib/event-sourcing/event-sourcing.spec.js

A core library for creating shape-based graphic editors

'use strict';

var _tap = require('tap');

var _eventSourcing = require('./event-sourcing');

var ALICE = 'Alice';
var BOB = 'Bob';
var EVE = 'Eve';

var TEST_HISTORY = [{ id: '0', author: ALICE, applied: true, payload: { some: 'payload' } }, { id: '1', author: BOB, applied: false, payload: { some: 'payload' } }, { id: '2', author: BOB, applied: false, payload: { some: 'payload' } }, { id: '3', author: ALICE, applied: true, payload: { some: 'payload' } }, { id: '4', author: ALICE, applied: false, payload: { some: 'payload' } }, { id: '5', author: EVE, applied: true, payload: { some: 'payload' } }, { id: '6', author: EVE, applied: true, payload: { some: 'payload' } }, { id: '7', author: ALICE, applied: false, payload: { some: 'payload' } }];

// GET UNDO

(0, _tap.test)('getUndoEvent 0', function (t) {
  t.equal((0, _eventSourcing.getUndoEvent)([], ALICE), null);
  t.end();
});

(0, _tap.test)('getUndoEvent 1', function (t) {
  var expected = TEST_HISTORY[3]; // .id === '3'

  t.deepEqual((0, _eventSourcing.getUndoEvent)(TEST_HISTORY, ALICE), expected);
  t.end();
});

(0, _tap.test)('getUndoEvent 2', function (t) {
  var expected = null;

  t.deepEqual((0, _eventSourcing.getUndoEvent)(TEST_HISTORY, BOB), expected);
  t.end();
});

(0, _tap.test)('getUndoEvent 3', function (t) {
  var expected = TEST_HISTORY[6];

  t.deepEqual((0, _eventSourcing.getUndoEvent)(TEST_HISTORY, EVE), expected);
  t.end();
});

// GET REDO

(0, _tap.test)('getRedoEvent 0', function (t) {
  t.deepEqual((0, _eventSourcing.getRedoEvent)([], ALICE), null);
  t.end();
});

(0, _tap.test)('getRedoEvent 1', function (t) {
  var expected = TEST_HISTORY[4];

  t.deepEqual((0, _eventSourcing.getRedoEvent)(TEST_HISTORY, ALICE), expected);
  t.end();
});

(0, _tap.test)('getRedoEvent 2', function (t) {
  var expected = TEST_HISTORY[1];

  t.deepEqual((0, _eventSourcing.getRedoEvent)(TEST_HISTORY, BOB), expected);
  t.end();
});

(0, _tap.test)('getRedoEvent 3', function (t) {
  var expected = null;

  t.deepEqual((0, _eventSourcing.getRedoEvent)(TEST_HISTORY, EVE), expected);
  t.end();
});