public function testRemoveClassmates()
{
$john = new DBStudent();
$john->setName('john');
$jean = new DBStudent();
$jean->setName('jean');
$phil = new DBStudent();
$phil->setName('phil');
$john->setClassmates(array($jean, $phil));
$john->save();
$this->assertEquals(3, DBStudentQuery::create()->count());
$this->assertTrue($john->hasClassmate($jean));
$this->assertTrue($john->hasClassmate($phil));
$this->assertTrue($phil->hasClassmate($john));
$this->assertTrue($jean->hasClassmate($john));
$john->removeClassmates();
$this->assertEquals(0, count($john->getClassmates()));
$this->assertEquals(3, DBStudentQuery::create()->count());
$this->assertFalse($john->hasClassmate($phil));
$this->assertFalse($john->hasClassmate($jean));
$this->assertFalse($phil->hasClassmate($john));
$this->assertFalse($jean->hasClassmate($john));
$john->save();
$this->assertEquals(3, DBStudentQuery::create()->count());
$this->assertEquals(0, DBClassmateQuery::create()->count());
$this->assertEquals(0, count($john->getClassmates()));
$this->assertFalse($john->hasClassmate($phil));
$this->assertFalse($john->hasClassmate($jean));
$this->assertFalse($phil->hasClassmate($john));
$this->assertFalse($jean->hasClassmate($john));
}
