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

<?php

namespace SilverStripe\ORM\Tests;

use SilverStripe\Dev\SapphireTest;
use SilverStripe\ORM\Tests\DataObjectTest\Team;

class HasManyListTest extends SapphireTest
{

    // Borrow the model from DataObjectTest
    protected static $fixture_file = 'DataObjectTest.yml';

    public static function getExtraDataObjects()
    {
        return array_merge(
            DataObjectTest::$extra_data_objects,
            ManyManyListTest::$extra_data_objects
        );
    }

    public function testRelationshipEmptyOnNewRecords()
    {
        // Relies on the fact that (unrelated) comments exist in the fixture file already
        $newTeam = new Team(); // has_many Comments
        $this->assertEquals(array(), $newTeam->Comments()->column('ID'));
    }

    /**
     * Test that related objects can be removed from a relation
     */
    public function testRemoveRelation()
    {

        // Check that expected teams exist
        $list = Team::get();
        $this->assertEquals(
            array('Subteam 1', 'Subteam 2', 'Subteam 3', 'Team 1', 'Team 2', 'Team 3'),
            $list->sort('Title')->column('Title')
        );

        // Test that each team has the correct fans
        $team1 = $this->objFromFixture(DataObjectTest\Team::class, 'team1');
        $team2 = $this->objFromFixture(DataObjectTest\Team::class, 'team2');
        $this->assertEquals(array('Bob', 'Joe'), $team1->Comments()->sort('Name')->column('Name'));
        $this->assertEquals(array('Phil'), $team2->Comments()->sort('Name')->column('Name'));

        // Test that removing comments from unrelated team has no effect
        $team1comment = $this->objFromFixture(DataObjectTest\TeamComment::class, 'comment1');
        $team2comment = $this->objFromFixture(DataObjectTest\TeamComment::class, 'comment3');
        $team1->Comments()->remove($team2comment);
        $team2->Comments()->remove($team1comment);
        $this->assertEquals(array('Bob', 'Joe'), $team1->Comments()->sort('Name')->column('Name'));
        $this->assertEquals(array('Phil'), $team2->Comments()->sort('Name')->column('Name'));
        $this->assertEquals($team1->ID, $team1comment->TeamID);
        $this->assertEquals($team2->ID, $team2comment->TeamID);

        // Test that removing items from the related team resets the has_one relations on the fan
        $team1comment = $this->objFromFixture(DataObjectTest\TeamComment::class, 'comment1');
        $team2comment = $this->objFromFixture(DataObjectTest\TeamComment::class, 'comment3');
        $team1->Comments()->remove($team1comment);
        $team2->Comments()->remove($team2comment);
        $this->assertEquals(array('Bob'), $team1->Comments()->sort('Name')->column('Name'));
        $this->assertEquals(array(), $team2->Comments()->sort('Name')->column('Name'));
        $this->assertEmpty($team1comment->TeamID);
        $this->assertEmpty($team2comment->TeamID);
    }
}