/**
* Deletes all current Slope One data.
*/
protected function reset()
{
sfSlopeOnePeer::doDeleteAll();
}
$users = array();
for ($i = 0; $i < 3; $i++) {
$users[$i] = new sfGuardUser();
$users[$i]->setUsername(rand());
$users[$i]->save();
}
$items = ItemPeer::doSelect(new Criteria());
$items[0]->setRating(5, $users[0]->getId());
$items[1]->setRating(3, $users[0]->getId());
$items[2]->setRating(2, $users[0]->getId());
$items[0]->setRating(3, $users[1]->getId());
$items[1]->setRating(4, $users[1]->getId());
$items[1]->setRating(2, $users[2]->getId());
$items[2]->setRating(5, $users[2]->getId());
$t = new lime_test(10, new lime_output_color());
//Build slope one tables
foreach (array('sfPropelSlopeOnePhpBuilder', 'sfPropelSlopeOneMySqlBuilder') as $builder) {
$builder = new $builder(new sfPropelSlopeOneSqlParser());
$builder->build();
$t->is(sfSlopeOnePeer::doCount(new Criteria()), sizeof($items) * (sizeof($items) - 1), 'Correct number of slope one values generated using ' . get_class($builder));
}
$t->is(sizeof($items[0]->getRecommendations()), sizeof($items) - 1, 'Correct number of recommendations retrieved for item');
$t->is(sizeof($items[0]->getRecommendations(1)), 1, 'Correct number of recommendations retrieved with limit');
$t->is(sizeof($users[0]->getRecommendations('Item')), 0, 'Users should only be recommended items which they have not already rated');
$recommendations = $users[2]->getRecommendations('Item');
$t->is(sizeof($recommendations), 1, 'Users should only be recommended items which they have not already rated');
$t->isa_ok($recommendations[0], 'sfSlopeOneRecommendation', 'Behaviors should return recommendation objects');
$t->is($recommendations[0]->getTitle(), $items[0]->getTitle(), 'Recommendation object should match original object');
$t->is($recommendations[0]->getRecommendationRating(), 4.33333333, 'Recommendation score matches expected value');
//Matches example from http://en.wikipedia.org/wiki/Slope_One
$t->is(sizeof($users[2]->getRecommendations('Item', 0)), 0, 'Correct number of recommendations retrieved with limit');