IoC in a tweet

c.php

<?php // php -dallow_url_include=1 c.php

// Compressed 122 bytes
// class C extends ArrayObject { function __get($i) { $s = $this[$i]; $s instanceof Closure && $s = $s($this); return $s; } }

class C extends ArrayObject {
  function __get($i) {
    $s = $this[$i];
    $s instanceof Closure && $s = $s($this);
    return $s;
  }
}

// Include testing framework
include 'https://gist.github.com/mathiasverraes/9046427/raw/9c990407c4b5337e6df8a8ae8e044fadedbf6858/TestFrameworkInATweet.php';

// {{{ Fixtures
  class A { public $v; public function __construct($val) { $this->v = $val; } }
  class B { public $a; public function __construct(A $a) { $this->a = $a; } }
// }}}

$container = new C;

it('should be an array-like', $container instanceof ArrayAccess);
it('should return zero for count()', count($container) === 0);

$container['parameter'] = 'parameter-value';

it('should return one for count()', count($container) === 1);
it('should return true isset() in existing parameter', isset($container['parameter']) === true);
it('should return parameter value', $container['parameter'] === 'parameter-value');

$create_a = function($c) {
  return new A($c['parameter']);
};

$container['service_a'] = $create_a;

it('should return two for count()', count($container) === 2);
it('should return the raw creator', $container['service_a'] === $create_a);

$container['service_b'] = function($c) {
  return new B($c->service_a);
};

$service_b = $container->service_b;

it('should return service b', $service_b instanceof B);
it('should be injected with A', $service_b->a instanceof A);
it('should be injected with the parameter value', $service_b->a->v === 'parameter-value');

unset($container['service_b']);

it('should return two for count()', count($container) === 2);
it('should return false for isset() of service_b', isset($container['service_b']) === false);

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