From phpunit-book.pdf:
- `assertEquals(mixed $expected, mixed $actual[, string $message = ''])`
- `Reports an error identified by $message if the two variables $expected and $actual are not equal.`

Since `2` will never equal to `humaneTime`, therefore `$time` is displayed.  But `$time` is an object which also doesn't implement the `__toString()`.  Its parent `Symfony\Component\Console\Helper\Helper` doesn't implement it either.