public function testPrependUsingExistingSegmentOverwrites()
{
$this->_response->prepend('some', "some content\n");
$this->_response->prepend('some', "more content\n");
$content = $this->_response->getBody(true);
$this->assertTrue(is_array($content));
$expected = array('some' => "more content\n");
$this->assertEquals($expected, $content);
}