How to use reflection to test private and protected methods

$class = new \ReflectionClass('MyNamespace\MyClass');

 $myProtectedMethod = $class->getMethod('myProtectedMethod');

$myProtectedMethod->setAccessible(true);

$myInstance = new MyClass();

$result = $myProtectedMethod->invokeArgs($myInstance, [$argument1, $argument2]);

$class = new \ReflectionClass('MyNamespace\MyClass');

$myProtectedProperty = $class->getProperty(myProtectedProperty);

$myProtectedProperty->setAccessible(true);

$myInstance = new MyClass();

$myProtectedProperty->setValue($myInstance, 'value');