parro-it/private-class

import test from 'ava';
import priv from './main';

const Person = priv(class Person {
    constructor(name, age) {
        this._name = name;
        this._age = age;
    }

    get age() {
        return this._age;
    }

    set age(value) {
        this._age = value;
    }

    name() {
        return this._name;
    }
});

test('classes could be instantiated', t => {
    const p = new Person('Andrea', 40);
    t.is(typeof p, 'object');
    t.false(p === null);
});

test('public function are visible', t => {
    const p = new Person('Andrea', 40);
    t.is(typeof p.name, 'function');
});

test('public getter are visible', t => {
    const p = new Person('Andrea', 40);
    t.is(p.age, 40);
});

test('public setter are visible', t => {
    const p = new Person('Andrea', 40);
    p.age = 41;
    t.is(p.age, 41);
});

test('public function can read private fields', t => {
    const p = new Person('Andrea', 40);
    t.is(p.name(), 'Andrea');
});

test('extern code can not read private fields', t => {
    const p = new Person('Andrea', 40);
    t.is(p._name, undefined);
});

test('public function names are preserved', t => {
    const p = new Person('Andrea', 40);
    t.is(p.name.name, 'name');
});

test('Class name is preserved', t => {
    t.is(Person.name, 'Person');
});

test('constructor is preserved', t => {
    t.is(Person.prototype.constructor, Person);
});