[tor-bugs] #27195 [Core Tor/Tor]: Rust: add tests for protover edge cases

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#27195: Rust: add tests for protover edge cases
-------------------------------------------------+-------------------------
 Reporter:  teor                                 |          Owner:  (none)
     Type:  enhancement                          |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.3.5.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  033-backport, 034-backport, rust,    |  Actual Points:
  tor-test                                       |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by chelseakomlo):

 These extra test cases look good to me. Ideally we would write some kind
 of fuzzer test for this kind of string-parsing/handling code, but for this
 particular change it looks good to merge in.

 Setting this as merge-ready so Nick can take a look.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27195#comment:2>
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