public function oneTagAttributeIsRenderedCorrectly()
{
$mockTagBuilder = $this->getMockBuilder(TagBuilder::class)->setMethods(array('addAttribute'))->disableOriginalConstructor()->getMock();
$mockTagBuilder->expects($this->once())->method('addAttribute')->with('foo', 'bar');
$this->viewHelper->injectTagBuilder($mockTagBuilder);
$this->viewHelper->_call('registerTagAttribute', 'foo', 'string', 'Description', false);
$arguments = array('foo' => 'bar');
$this->viewHelper->setArguments($arguments);
$this->viewHelper->initialize();
}