Change test to have parse_url failed on negative port number

[rancoud]

Description

In PHP 7.14 parse_url behavior has changed. When showing port number at 0, it will not failed -> https://bugs.php.net/bug.php?id=80266
But this library still raising error when checking port manually

Changelist

• Change unit test for using negative port number

[codecov]

Codecov Report

Merging #14 (92f52a3) into master (248a8b1) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #14   +/-   ##
=========================================
  Coverage     98.62%   98.62%           
  Complexity      371      371           
=========================================
  Files            11       11           
  Lines           870      870           
=========================================
  Hits            858      858           
  Misses           12       12           

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