Add some more assertions based on specifications #1155

Job	Run time
Quality control	30s
Security checks	18s
PHP-Linter (8.1) / linter	18s
PHP-Linter (8.2) / linter	20s
PHP-Linter (8.3) / linter	14s
PHP-Linter (8.4) / linter	10s
Linter / yaml-linter	4s
Linter / json-linter	22s
Linter / ecmascript-linter	0s
Linter / style-linter	0s
Unit tests, PHP 8.4, ubuntu-latest	22s
Unit tests, PHP 8.1, windows-latest	38s
Unit tests, PHP 8.3, ubuntu-latest	15s
Unit tests, PHP 8.4, windows-latest	38s
Unit tests, PHP 8.2, ubuntu-latest	23s
Unit tests, PHP 8.2, windows-latest	49s
Unit tests, PHP 8.3, windows-latest	52s
Unit tests, PHP 8.1, ubuntu-latest	21s
Code coverage	10s
Cleanup artifacts	5s
	6m 49s

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