/**
* @covers ::getChanges
*/
public function testGetChanges()
{
$object = new City(['id' => 10, 'name' => 'test1']);
$this->assertEmpty($object->getChanges());
$object->name = 'new val';
$expected = ['name' => 'new val'];
$this->assertEquals($expected, $object->getChanges());
$object->id = 20;
$expected = ['name' => 'new val', 'id' => 20];
$this->assertEquals($expected, $object->getChanges());
$object->name = 'test1';
$object->id = 10;
$this->assertEmpty($object->getChanges());
}