PHPUnit 9.3 released a new schema for the phpunit.xml configuration file. I had to migrate the file to the new format in order to avoid the warning. PHPUnit Versions older than 9.3 have to use the phpunit.xml.legacy configuration file, because the new format is unknown for them.
I also had to update some tests, because the at() matcher deprecated in PHPUnit 9.3 and will be removed in PHPUnit 10.
The code needs some minor changes to run with PHP 8, I will look into this in an upcoming pull request.
PHPUnit 9.3 released a new schema for the
phpunit.xmlconfiguration file. I had to migrate the file to the new format in order to avoid the warning. PHPUnit Versions older than 9.3 have to use thephpunit.xml.legacyconfiguration file, because the new format is unknown for them. I also had to update some tests, because theat()matcher deprecated in PHPUnit 9.3 and will be removed in PHPUnit 10.The code needs some minor changes to run with PHP 8, I will look into this in an upcoming pull request.
For further details concerning this pull request look into graphp/graphviz #46. This pull request builds on top of reactphp/socket #239.