How do you test code that uses arrays?

Testing code that uses arrays can be approached in several ways. Generally, you should focus on ensuring proper handling of edge cases, such as empty arrays, and validating the output against expected results. Here’s a basic example of how to test functions that manipulate arrays in PHP.


        <?php
        function sumArray($arr) {
            return array_sum($arr);
        }

        // Example test cases
        $test1 = [1, 2, 3, 4];
        $test2 = [];
        
        echo sumArray($test1); // Outputs: 10
        echo sumArray($test2); // Outputs: 0
        ?>