What are best practices for implementing Infrastructure testing?

        // Example of an Infrastructure test using PHP
        function testInfrastructure() {
            $expected = 'up';
            $actual = checkServerStatus(); // Function that checks server status
            assert($actual === $expected, 'The server is down!');
        }

        function checkServerStatus() {
            // Simulating a server status check
            return 'up'; 
        }

        testInfrastructure();