function test_deleteAll()
{
//Arrange
$name = "flamingo";
$fur = 0;
$wings = 1;
$legs = 2;
$test_species = new Species($name, $fur, $wings, $legs);
$test_species->save();
//Act
Species::deleteAll();
$result = Species::getAll();
//Assert
$this->assertEquals([], $result);
}
