Test extended query tagging "has all of these tags" functionality.
function testExtenderHasAllTags() {
$query = db_select('test')
->extend('SelectQueryExtender');
$query
->addField('test', 'name');
$query
->addField('test', 'age', 'age');
$query
->addTag('test');
$query
->addTag('other');
$this
->assertTrue($query
->hasAllTags('test', 'other'), 'hasAllTags() returned true.');
$this
->assertFalse($query
->hasAllTags('test', 'stuff'), 'hasAllTags() returned false.');
}