Define the application rule first
This workflow is for an application that owns two kinds of field policy: password requirements and color-code constraints. Before testing, write the allowed password length and character rules, the color notations the product accepts, any channel or alpha ranges, and the behavior for blanks, trimming, and case. A policy record should also say what happens when a value is malformed, valid but disallowed, borderline, or ready for manual review.
Use synthetic fixtures and the matching path
Build a small matrix with clear pass, boundary, and fail examples. Send password candidates to strong-password-validator and review its reported length, requirements, strength, score, warnings, and suggestions. Send color candidates to color-code-validator and review its validity and detected format. Keep the raw fixture beside each observation so an unexpected decision can be reproduced without exposing a real secret.
Separate generic validity from product acceptance
The validator output is evidence about the input, not the application's complete policy. Compare it with the product allowlist and ranges yourself. A syntactically valid color can still be disallowed by the product, and a password that meets common checks can still be unsuitable for a broader credential design. Record accepted, rejected, and manual-review decisions with reasons instead of collapsing them into a single valid flag.
Review UX and boundaries separately
Investigate false positives, false negatives, normalization surprises, and confusing error messages with additional synthetic cases. Review keyboard use, screen-reader wording, non-color cues, contrast, password help, recovery, and other accessibility or security concerns through their appropriate processes. These two checks alone do not establish authentication security, regulatory compliance, or design accessibility.