Symfony\Component\DomCrawler\Tests\CrawlerTest::testPreviousAll PHP Method

    public function testPreviousAll()
    {
        $crawler = $this->createTestCrawler()->filterXPath('//li')->eq(2);
        $this->assertNotSame($crawler, $crawler->previousAll(), '->previousAll() returns a new instance of a crawler');
        $this->assertInstanceOf('Symfony\\Component\\DomCrawler\\Crawler', $crawler, '->previousAll() returns a new instance of a crawler');

        $nodes = $crawler->previousAll();
        $this->assertEquals(2, $nodes->count());
        $this->assertEquals('Two', $nodes->eq(0)->text());

        try {
            $this->createTestCrawler()->filterXPath('//ol')->previousAll();
            $this->fail('->previousAll() throws an \InvalidArgumentException if the node list is empty');
        } catch (\InvalidArgumentException $e) {
            $this->assertTrue(true, '->previousAll() throws an \InvalidArgumentException if the node list is empty');
        }
    }