PHPUnit テストのためのプライベート プロパティとメソッドの機能分析

class Sample
{
  private $a = 0;
  private function run()
  {
    echo $a;
  }
}

class testSample()
{
    $method = new ReflectionMethod('Sample', 'run');
    $method->setAccessible(true); //将run方法从private变成类似于public的权限
    $method->invoke(new Sample()); //调用run方法
}

private static function run()
{
  echo 'run is a private static function';
}

$method->invoke(null); //只有静态方法可以不必传类的实例化

private function run($x, $y)
{
  return $x + $y;
}

$method->invokeArgs(new Sample(), array(1, 2));
//array中依次写入要传的参数。执行结果返回3

public function testPrivateProperty()
{
  $reflectedClass = new ReflectionClass('Sample');
  $reflectedProperty = $reflectedClass->getProperty('a');
  $reflectedProperty->setAccessible(true);
  $reflectedProperty->getValue(); //获取$a的值
  $reflectedProperty->setValue(123); //给$a赋值:$a = 123;
}

<?php
class Foo
{
  private $bar = &#39;baz&#39;;
  public function doSomething()
  {
    return $this->bar = $this->doSomethingPrivate();
  }
  private function doSomethingPrivate()
  {
    return &#39;blah&#39;;
  }
}
?>

<?php
class FooTest extends PHPUnit_Framework_TestCase
{
  /**
   * @covers Foo::doSomething
   * @covers Foo::doSomethingPrivate
   */
  public function testDoSomething()
  {
    $foo = new Foo;
    $this->assertEquals(&#39;blah&#39;, $foo->doSomething());
  }
}
?>

<?php
class FooTest extends PHPUnit_Framework_TestCase
{
  public function testPrivateAttribute()
  {
    $this->assertAttributeEquals(
     &#39;baz&#39;, /* expected value */
     &#39;bar&#39;, /* attribute name */
     new Foo /* object     */
    );
  }
}
?>

<?php
class FooTest extends PHPUnit_Framework_TestCase
{
  /**
   * @covers Foo::doSomethingPrivate
   */
  public function testPrivateMethod()
  {
    $method = new ReflectionMethod(
     &#39;Foo&#39;, &#39;doSomethingPrivate&#39;
    );
    $method->setAccessible(TRUE);
    $this->assertEquals(
     &#39;blah&#39;, $method->invoke(new Foo)
    );
  }
}
?>