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简单代理，用于访问受保护/私有类成员。

其目的是在不重新发明轮子的前提下，让单元测试能够访问私有成员。

此助手使用闭包来访问类的私有成员，而不是使用反射。

安装

composer require hakito/publisher

使用方法

假设你有一个带有私有成员的类

class Target
{
    private $foo = 'secret';
    private function bar($arg) { return $arg . 'Bar'; }

    private static $sFoo = 'staticSecret';
}

创建代理以访问这些成员

$target = new Target();
$published = new hakito\Publisher\Published($target);

// Get private property
$property = $published->foo;
// $property = 'secret';

// Set private property
$published->foo = 'outsider';
// $target->foo = 'outsider';

// call private method
$name = $published->bar('Saloon');
// $name = 'SaloonBar';


// Optional you can provide a base class in the constructor
class Derived extends Target {
    private $foo = 'derived';
}

$derived = new Derived();
$published = new hakito\Publisher\Published($derived, Target::class);
$property = $published->foo; // Gets property from Target
// $property = 'secret';

访问静态成员

如果你想要访问静态字段或方法，你必须使用类 StaticPublished

$published = new StaticPublished(Target::class);

$property = $published->sFoo;
// $property = 'staticSecret'

设置字段和调用方法与实例相同。

限制

发布的方法调用无法设置引用参数。

class Target
{
    private function methodWithReferenceArgument(&$arg) { $arg = 'hi'; }
}

$target = new Target();
$published = new hakito\Publisher\Published($target);
$val = 'initial';
$published->methodWithReferenceArgument($val);
// $val is still 'initial'

方法调用的返回值不能是引用

class Target
{
    private $_member = [];
    private function &methodWithReferenceReturnValue($arg) { return $this->_member; }
}

$target = new Target();
$published = new hakito\Publisher\Published($target);
$val = 'initial';
$published->methodWithReferenceReturnValue($val)['new'] = 'value';
// Target::_member is still []