veil-objects/tests/test-cases/1.test.js

The JS/TS implementation of Veil objects approach from EO oriented programming

import Veil from '../../src/veil.js';
import Project from '../mocks/simpleTargetClass.js';
import assert from 'assert';

var mockPresetsData = {
  name: 'project-1',
  author: 'Alex'
};

var project = new Project('123');
var veiledProject = new Veil(project, mockPresetsData);

describe('Veiled object', function () {
  it(
    'If non pierced: calling preseted target object methods invokes presets data',
    function () {
      assert.equal(
        veiledProject.name(),
        mockPresetsData.name
      );
      assert.equal(
        veiledProject.author(),
        mockPresetsData.author
      );
    }
  );

  it(
    'If pierced: calling non-preseted target object methods pierces the veil and invokes native target methods',
    function () {
      assert.equal(
        veiledProject.description(),
        'description'
      );
      assert.equal(
        veiledProject.name(),
        project.name()
      );
    }
  );

  it(
    'The target object is an instance of a origin object or class',
    function () {
      assert.equal(
        veiledProject.isTargetInstanceOf(project),
        true
      );
      assert.equal(
        veiledProject.isTargetInstanceOf(Project),
        true
      );
    }
  );
});