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