dependencySet.js

// Sudoku Solver
// Copyright (C) 2020  Christoph (Sheogorath) Kern
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

const Cell = require("../lib/cell");
const DependencySet = require("../lib/dependencySet");
const assert = require('assert');

describe('DependencySet', function () {
  let cellSet;
  // disable debug output
  console.debug = function(){};
  beforeEach(() => {
    cellSet = [new Cell(), new Cell(), new Cell(), new Cell(), new Cell(), new Cell(), new Cell(), new Cell(), new Cell()];
  });

  describe('#constructor(cells)', function () {
    it('should create a DependencySet', function () {
      const dependencySet = new DependencySet(cellSet);
      assert.deepEqual(dependencySet.cells, cellSet);
    });

    it('should throw an error when more than 9 cells are added', function () {
      assert.throws(() => {
        new DependencySet(cellSet.concat([new Cell()]));
      }, Error);
    });

    it('should listen to changed events from cells', function () {
      const count = cellSet[0].listenerCount("changed");
      new DependencySet(cellSet);

      assert.equal(cellSet[0].listenerCount("changed"), count + 1);
    });
  });
});