It looks like there's a misunderstanding between what the code is doing and what the test is expecting. The way max_count is implemented in the original code makes sense—it represents the number of Fibonacci numbers to generate. So, if max_count=1, it should yield [0], not [0, 1]. This aligns with how iterators typically work: they produce a specific number of items, not items up to a certain index.

If the test is expecting [0, 1] for max_count=1, then the test is likely wrong, or the assignment requirements might be unclear. If the requirements explicitly say [0, 1] is the expected output, you'd need to change the logic so that max_count represents the index of the last Fibonacci number instead of the count. But honestly, the original code seems correct based on standard iterator behavior, so it might be worth double-checking the assignment instructions.