<?php

namespace Parse\Test;

use Parse\ParseObject;

use Parse\ParseQuery;

class ParseRelationTest extends \PHPUnit_Framework_TestCase

{

public static function setUpBeforeClass()

{

Helper::setUp();

}

public function tearDown()

{

Helper::tearDown();

}

/**

* This function used as a helper function in test functions to save objects.

*

* @param int $numberOfObjects Number of objects you want to save.

* @param callable $callback Function which takes int as a parameter.

* and should return ParseObject.

*/

public function saveObjects($numberOfObjects, $callback)

{

$allObjects = [];

for ($i = 0; $i < $numberOfObjects; $i++) {

$allObjects[] = $callback($i);

}

ParseObject::saveAll($allObjects);

}

public function testParseRelations()

{

$children = [];

$this->saveObjects(

10,

function ($i) use (&$children) {

$child = ParseObject::create('ChildObject');

$child->set('x', $i);

$children[] = $child;

return $child;

}

);

$parent = ParseObject::create('ParentObject');

$relation = $parent->getRelation('children');

$relation->add($children[0]);

$parent->set('foo', 1);

$parent->save();

$results = $relation->getQuery()->find();

$this->assertEquals(1, count($results));

$this->assertEquals($children[0]->getObjectId(), $results[0]->getObjectId());

$this->assertFalse($parent->isDirty());

$parentAgain = (new ParseQuery('ParentObject'))->get($parent->getObjectId());

$relationAgain = $parentAgain->get('children');

$this->assertNotNull($relationAgain, 'Error');

$results = $relation->getQuery()->find();

$this->assertEquals(1, count($results));

$this->assertEquals($children[0]->getObjectId(), $results[0]->getObjectId());

$relation->remove($children[0]);

$relation->add([$children[4], $children[5]]);

$parent->set('bar', 3);

$parent->save();

$results = $relation->getQuery()->find();

$this->assertEquals(2, count($results));

$this->assertFalse($parent->isDirty());

$relation->remove($children[5]);

$relation->add(

[

$children[5],

$children[6],

$children[7],

$children[8],

]

);

$parent->save();

$results = $relation->getQuery()->find();

$this->assertEquals(5, count($results));

$this->assertFalse($parent->isDirty());

$relation->remove($children[8]);

$parent->save();

$results = $relation->getQuery()->find();

$this->assertEquals(4, count($results));

$this->assertFalse($parent->isDirty());

$query = $relation->getQuery();

$query->lessThan('x', 5);

$results = $query->find();

$this->assertEquals(1, count($results));

$this->assertEquals($children[4]->getObjectId(), $results[0]->getObjectId());

}

public function testQueriesOnRelationFields()

{

$children = [];

$this->saveObjects(

10,

function ($i) use (&$children) {

$child = ParseObject::create('ChildObject');

$child->set('x', $i);

$children[] = $child;

return $child;

}

);

$parent = ParseObject::create('ParentObject');

$parent->set('x', 4);

$relation = $parent->getRelation('children');

$relation->add(

[

$children[0],

$children[1],

$children[2],

]

);

$parent->save();

$parent2 = ParseObject::create('ParentObject');

$parent2->set('x', 3);

$relation2 = $parent2->getRelation('children');

$relation2->add(

[

$children[4],

$children[5],

$children[6],

]

);

$parent2->save();

$query = new ParseQuery('ParentObject');

$query->containedIn('children', [$children[4], $children[9]]);

$results = $query->find();

$this->assertEquals(1, count($results));

$this->assertEquals($results[0]->getObjectId(), $parent2->getObjectId());

}

}