public function testLiteralCreatesLiteralPredicate()
{
$predicate = new Predicate();
$predicate->literal('foo.bar = ?', 'bar');
$parts = $predicate->getExpressionData();
$this->assertEquals(1, count($parts));
$this->assertContains('foo.bar = %s', $parts[0]);
$this->assertContains(array('bar'), $parts[0]);
}
