silverstripe-framework/tests/php/ORM/ComponentSetTest.php

<?php

namespace SilverStripe\ORM\Tests;

use SilverStripe\Dev\SapphireTest;

class ComponentSetTest extends SapphireTest {

	protected static $fixture_file = 'ComponentSetTest.yml';

	protected $extraDataObjects = array(
		ComponentSetTest\Player::class,
		ComponentSetTest\Team::class,
	);

	public function testSetByIDListManyMany() {
		$team1 = $this->objFromFixture(ComponentSetTest\Team::class, 'team1');
		$player1_team1 = $this->objFromFixture(ComponentSetTest\Player::class, 'player1_team1');
		$player2 = $this->objFromFixture(ComponentSetTest\Player::class, 'player2');

		$team1->Players()->setByIdList(array(
			$player1_team1->ID,
			$player2->ID
		));
		$team1->flushCache();
		$this->assertContains(
			$player2->ID,
			$team1->Players()->column('ID'),
			'Can add new entry'
		);
		$this->assertContains(
			$player1_team1->ID,
			$team1->Players()->column('ID'),
			'Can retain existing entry'
		);

		$team1->Players()->setByIdList(array(
			$player1_team1->ID
		));
		$team1->flushCache();
		$this->assertNotContains(
			$player2->ID,
			$team1->Players()->column('ID'),
			'Can remove existing entry'
		);
		$this->assertContains(
			$player1_team1->ID,
			$team1->Players()->column('ID'),
			'Can retain existing entry'
		);

		$team1->Players()->setByIdList(array());
		$team1->flushCache();
		$this->assertEquals(0, $team1->Players()->Count(),
			'Can remove all entries by passing an empty array'
		);
	}
}