increase test coverage #2544

Job	Run time
PHP 8, Solr 7 cloud	2m 36s
PHP 8, Solr 7 server	1m 39s
PHP 8, Solr 8 cloud	5m 36s
PHP 8, Solr 8 server	4m 53s
PHP 8, Solr 9 cloud	5m 41s
PHP 8, Solr 9 server	4m 57s
PHP 8.1, Solr 7 cloud	2m 58s
PHP 8.1, Solr 7 server	1m 45s
PHP 8.1, Solr 8 cloud	5m 46s
PHP 8.1, Solr 8 server	4m 56s
PHP 8.1, Solr 9 cloud	5m 46s
PHP 8.1, Solr 9 server	4m 54s
PHP 8.2, Solr 7 cloud	2m 34s
PHP 8.2, Solr 7 server	1m 34s
PHP 8.2, Solr 8 cloud	5m 39s
PHP 8.2, Solr 8 server	4m 40s
PHP 8.2, Solr 9 cloud	5m 44s
PHP 8.2, Solr 9 server	4m 51s
PHP 8.3, Solr 7 cloud	2m 39s
PHP 8.3, Solr 7 server	1m 40s
PHP 8.3, Solr 8 cloud	4m 13s
PHP 8.3, Solr 8 server	3m 5s
PHP 8.3, Solr 9 cloud	4m 7s
PHP 8.3, Solr 9 server	3m 14s
Upload coverage to codecov.io	14s
	1h 35m 41s

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