It's been done in a new fork.

Should this be done in a new fork?

• Makes reference solution private and gives it a better name,
• Swaps actual and expected (fixes this issue).

Please rename _gp to ref_get_password ( or something similar ).

• Fixes the order of actual and expected (fixes this issue).
• Changes assertEqual to assertSame to prevent return true; abuse.

Swaps actual and expected (addresses this issue).

Addresses this issue:

• Swaps actual and expected in assertions,
• Adds missing $ to the argument name in the solution setup.

• Swaps actual and expected in assertions (fixes this issue).
• Updates tests to PHP 8.
• Removes reference solution from preloaded.

• Fixes order of actual and expected (addresses this issue).
• Updates tests to PHP 8.

Fixes this issue:

• Fixes order of actual and expected,
• Extends range of inputs to 1e9 (probably invalidates range-based solutions).

Swaps actual and expected (partially addresses this issue).

Swaps actual and expected (fixes this issue).

Corrected Here

Corrected Here

Corrected Here