fix(isRgbColor): Fix validation of rgb(a)ColorPercentage strings

[pano9000]

Fix validation of "rgb(a)ColorPercent" strings, see #2113
The current RegExp is missing the "end of string" anchor, so it will also match values with additional string content after the actual rgb color part, kindly check the issue above for examples.

This fixes #2113

Checklist

• PR contains only changes related; no stray files, etc.
• [ ] README updated (where applicable)
• Tests written (where applicable)

[codecov]

Codecov Report

Base: 100.00% // Head: 100.00% // No change to project coverage 👍

Coverage data is based on head (67ba926) compared to base (f97e8d4).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff            @@
##            master     #2114   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files          105       105           
  Lines         2335      2335           
  Branches       586       586           
=========================================
  Hits          2335      2335           

Impacted Files	Coverage Δ
src/lib/isRgbColor.js	100.00% <100.00%> (ø)

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[braaar]

Are we concerned that this is a breaking change or do we see this more as a fix? Could there be someone out there who genuinely wants to permit some kind of trailing text, such as rgb(25, 25, 25);?

[pano9000]

I want to say no, that trailing semicolon would rather be part of CSS syntax, instead of the rgb color itself, don't you think?

on another note:
Generally speaking, I think isRgbColor could also be extended to also accept/validate rgb values, which do not have the rgb prefix, or e.g. also accept spaces between the values, but again - this is out of the scope of this PR and something for the future.

EDIT: Seems like the work has already been done or at least started here: #2029

[WikiRik]

I think that people should sanitize the input enough so there is no trailing text. Just like text added to the beginning.

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Btw; we should do the same for isHSL as well right? I think we have the same issue there

[pano9000]

Btw; we should do the same for isHSL as well right? I think we have the same issue there

which issue exactly do you mean? if it is about trailing strings: That issue is not present in isHSL
Or is this about "extending" isHSL to allow spaces etc.?

[WikiRik]

Yeah, I was looking at the isHSL tests and didn't see any with trailing strings. I assumed that would mean it was also not implemented in the RegExp but I didn't check. But it seems that we only need to add additional tests for that.