joii/test/Reflection/ReflectionTest.js

Javascript Object Inheritance Implementation

/* Javascript Object Inheritance Implementation                ______  ________
 * (c) 2016 <harold@iedema.me>                             __ / / __ \/  _/  _/
 * Licensed under MIT.                                    / // / /_/ // /_/ /
 * ------------------------------------------------------ \___/\____/___/__*/
var JOII = require('../../dist/joii').JOII;

/**
 * Test the behavior of the Reflection mechanism which retrieves metadata from
 * a defined JOII-class, its properties and methods.
 */
test('Reflection:ReflectionTest', function(assert) {

    var BaseClass = JOII.ClassBuilder({}, {
        'final protected nullable number a_number' : 1
    });

    var ChildClass = JOII.ClassBuilder({ 'extends' : BaseClass }, {
        'protected nullable string a_string' : 'Hello World'
    });

    var EndClass = JOII.ClassBuilder({ 'extends' : ChildClass }, {
        'public setNumber' : function(i) {
            this.a_number = i + 10;
        }
    });

    var base_reflector  = new JOII.Reflection.Class(BaseClass),
        child_reflector = new JOII.Reflection.Class(ChildClass),
        end_reflector   = new JOII.Reflection.Class(EndClass);

    assert.equal(base_reflector.getProperties().length, 1, 'Amount of properties in BaseClass is 1.');
    assert.equal(child_reflector.getProperties().length, 2, 'Amount of properties in ChildClass is 2.');
    assert.equal(end_reflector.getProperties().length, 2, 'Amount of properties in EndClass is 2.');
    assert.equal(base_reflector.getMethods().length, 2, 'Amount of methods in BaseClass is 3.');
    assert.equal(child_reflector.getMethods().length, 4, 'Amount of methods in ChildClass is 5.');
    assert.equal(end_reflector.getMethods().length, 5, 'Amount of methods in EndClass is 6.');

    assert.equal(base_reflector.hasParent(), false, 'BaseClass does not have a parent.');
    assert.equal(child_reflector.hasParent(), true, 'ChildClass has a parent.');
    assert.equal(end_reflector.hasParent(), true, 'EndClass has have a parent.');

    assert.equal(base_reflector.getProperty('a_number').getName(), 'a_number', 'a_number reflects name OK from BaseClass.');
    assert.equal(child_reflector.getProperty('a_string').getName(), 'a_string', 'a_string reflects name OK from ChildClass.');
    assert.equal(end_reflector.getProperty('a_number').getName(), 'a_number', 'a_number reflects name OK from EndClass.');

    var prop_a = base_reflector.getProperty('a_number'),
        prop_b = child_reflector.getProperty('a_string'),
        method = end_reflector.getMethod('setNumber');

    assert.equal(prop_a.isType('number'), true, 'prop_a is a number.');
    assert.equal(prop_a.isAbstract(), false, 'prop_a is not abstract.');
    assert.equal(prop_a.isFinal(), true, 'prop_a is final.');
    assert.equal(prop_a.isProtected(), true, 'prop_a is protected.');
    assert.equal(prop_a.isPublic(), false, 'prop_a is not public.');
    assert.equal(prop_a.isNullable(), true, 'prop_a is nullable.');

    assert.equal(prop_b.isType('string'), true, 'prop_b is a string.');
    assert.equal(prop_b.isAbstract(), false, 'prop_b is not abstract.');
    assert.equal(prop_b.isFinal(), false, 'prop_b is not final.');
    assert.equal(prop_b.isProtected(), true, 'prop_b is protected.');
    assert.equal(prop_b.isPublic(), false, 'prop_b is not public.');
    assert.equal(prop_b.isNullable(), true, 'prop_b is nullable.');

    assert.equal(method.isType('function'), true, 'method is a function.');
    assert.equal(method.isAbstract(), false, 'method is not abstract.');
    assert.equal(method.isFinal(), false, 'method is not final.');
    assert.equal(method.isProtected(), false, 'method is not protected.');
    assert.equal(method.isPublic(), true, 'method is public.');
    assert.equal(method.isNullable(), false, 'method is not nullable.');

    // Test parent reflectors.
    var parent_base = child_reflector.getParent(),
        child_base  = end_reflector.getParent();

    assert.equal(parent_base.getProperties().length, 1, 'Amount of properties in BaseClass (via Child.parent) is 1.');
    assert.equal(child_base.getProperties().length, 2, 'Amount of properties in ChildClass (via End.parent) is 2.');
    assert.equal(parent_base.getMethods().length, 2, 'Amount of methods in BaseClass (via Child.parent) is 2.');
    assert.equal(child_base.getMethods().length, 4, 'Amount of methods in ChildClass (via End.parent) is 4.');

});