PHP code example of texthtml / doctest

1. Go to this page and download the library: Download texthtml/doctest library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php.

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

texthtml / doctest example snippets


/**
 * Compute the factorial of a non-negative $n
 *
 *


self::assertEq(factorial(0), 1);
self::assertEq(factorial(5), 120);


// @throws InvalidArgumentException unexpected negative integer: -10
factorial(-10);


echo factorial(6); // @prints 720
echo factorial(10);
// the @prints annotations can be anywhere, only their order is important, not their exact positions
// @prints 3628800


 */
function factorial(int $n): int {
    if ($n === 0) {
        return 1;
    }

    if ($n < 0) {
        throw new \InvalidArgumentException("unexpected negative integer: $n");
    }

    return $n * factorial($n - 1);
}


$ ./bin/doctest examples/factorial.php
 [OK] factorial#1 (examples/factorial.php:7)
 [OK] factorial#2 (examples/factorial.php:14)
 [ERROR] factorial#3 (examples/factorial.php:20)
         Expected output to be "". Got: "720"
 [OK] factorial#4 (examples/factorial.php:25)
 [ERROR] factorial#5 (examples/factorial.php:30)
         unexpected negative integer: -10
 [OK] factorial#6 (examples/factorial.php:35)
 [ERROR] factorial#7 (examples/factorial.php:43)
         Expected a value equal to 3628890. Got: 3628800
 [OK] Number of success: 4
 [ERROR] Number of failures: 3