Return to str_shuffle_basic.phpt CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / php / ext / standard / tests / strings

Annotation of embedaddon/php/ext/standard/tests/strings/str_shuffle_basic.phpt, revision 1.1.1.1

1.1       misho       1: --TEST--
                      2: Test str_shuffle() function : basic functionality 
                      3: --FILE--
                      4: <?php
                      5: /* Prototype  : string str_shuffle  ( string $str  )
                      6:  * Description: Randomly shuffles a string
                      7:  * Source code: ext/standard/string.c
                      8: */
                      9: 
                     10: /*
                     11:  * Testing str_shuffle() : basic functionality
                     12: */
                     13: 
                     14: echo "*** Testing str_shuffle() : basic functionality ***\n";
                     15: 
                     16: // Initialize all required variables
                     17: $str = 'This testcase tests the str_shuffle() function.';
                     18: var_dump(str_shuffle($str));
                     19: 
                     20: 
                     21: // For a given i/p string ensure that all combinations are
                     22: // generated given a reasonable sample of calls 
                     23: $a = array();
                     24: $trys = 1000;
                     25: $ip = 'abcd';
                     26: $len_ip = strlen($ip);
                     27: 
                     28: for ($i = 0; $i < $trys; $i++) {
                     29:     $op = str_shuffle($ip);
                     30:     
                     31:     if (!is_string($op) || strlen($op) != $len_ip) {
                     32:        echo "TEST FAILED\n"; 
                     33:     }   
                     34:     
                     35:     // Combination already hit ?
                     36:     if (empty($a[$op])) {
                     37:        // No first time init 
                     38:        $a[$op] = 0;
                     39:     }
                     40:        
                     41:     // Increment count for this combination
                     42:     $a[$op]++;
                     43: }
                     44: 
                     45: $combinations = count($a);
                     46: 
                     47: if ($combinations != 24) {
                     48:        echo "TEST FAILED.. Only $combinations out of a possible 24 combinations used\n";
                     49: } else {
                     50:        echo "TEST PASSED\n";
                     51: }
                     52: 
                     53: ?>
                     54: ===DONE===
                     55: --EXPECTF--
                     56: *** Testing str_shuffle() : basic functionality ***
                     57: string(47) "%s"
                     58: TEST PASSED
                     59: ===DONE===