public function testCreateRssXml()
{
$dataProvider = $this->getMock('Magento\\Framework\\App\\Rss\\DataProviderInterface');
$dataProvider->expects($this->any())->method('getCacheKey')->will($this->returnValue('cache_key'));
$dataProvider->expects($this->any())->method('getCacheLifetime')->will($this->returnValue(100));
$dataProvider->expects($this->any())->method('getRssData')->will($this->returnValue($this->feedData));
$this->rss->setDataProvider($dataProvider);
$result = $this->rss->createRssXml();
$this->assertContains('<?xml version="1.0" encoding="UTF-8"?>', $result);
$this->assertContains('<title><![CDATA[Feed Title]]></title>', $result);
$this->assertContains('<title><![CDATA[Feed 1 Title]]></title>', $result);
$this->assertContains('<link>http://magento.com/rss/link</link>', $result);
$this->assertContains('<link>http://magento.com/rss/link/id/1</link>', $result);
$this->assertContains('<description><![CDATA[Feed Description]]></description>', $result);
$this->assertContains('<description><![CDATA[Feed 1 Description]]></description>', $result);
}
public function testCreateRssXmlError()
{
$this->model->_addHeader(['test']);
$this->assertEquals('Error in processing xml. title key is missing', $this->model->createRssXml());
}