Test query tagging "has at least one of these tags" functionality.
function testHasAnyTag() {
$query = db_select('test');
$query
->addField('test', 'name');
$query
->addField('test', 'age', 'age');
$query
->addTag('test');
$this
->assertTrue($query
->hasAnyTag('test', 'other'), 'hasAnyTag() returned true.');
$this
->assertFalse($query
->hasAnyTag('other', 'stuff'), 'hasAnyTag() returned false.');
}