public function testIteratorAggregateInterface()
{
$list = VolunteerList::create([$this->createVolunteer('Peter'), $this->createVolunteer('Ferdi'), $this->createVolunteer('Neil')]);
$this->assertInstanceOf(VolunteerList::class, $list);
$names = [];
foreach ($list as $volunteer) {
$names[] = $volunteer->getName();
}
$this->assertEquals(['Peter', 'Ferdi', 'Neil'], $names);
}
public function loadVolunteers() : VolunteerList
{
if ($this->team === null) {
$teamData = file_get_contents(self::TEAM_DATA_DIRECTORY . $this->teamDataFile);
$this->team = VolunteerList::create(json_decode($teamData, true));
}
return $this->team;
}
