public function testCustomizeColumnLabelsIndex()
{
$report = $this->generate(TestUtil::createCollection([[]]), ['labels' => ['Column one', 'Column two', 'params' => 'Parameters']]);
$this->assertXPathCount($report, 14, '//col');
$this->assertXPathEval($report, 'Column one', 'string(//table/cols/col[1]/@label)');
$this->assertXPathEval($report, 'Column two', 'string(//table/cols/col[2]/@label)');
$this->assertXPathEval($report, 'groups', 'string(//table/cols/col[3]/@label)');
$this->assertXPathEval($report, 'Parameters', 'string(//table/cols/col[4]/@label)');
}