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59 lines
1.2 KiB
Plaintext
59 lines
1.2 KiB
Plaintext
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--TEST--
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Test str_shuffle() function : basic functionality
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--FILE--
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<?php
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/* Prototype : string str_shuffle ( string $str )
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* Description: Randomly shuffles a string
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* Source code: ext/standard/string.c
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*/
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/*
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* Testing str_shuffle() : basic functionality
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*/
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echo "*** Testing str_shuffle() : basic functionality ***\n";
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// Initialize all required variables
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$str = 'This testcase tests the str_shuffle() function.';
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var_dump(str_shuffle($str));
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// For a given i/p string ensure that all combinations are
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// generated given a reasonable sample of calls
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$a = array();
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$trys = 1000;
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$ip = 'abcd';
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$len_ip = strlen($ip);
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for ($i = 0; $i < $trys; $i++) {
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$op = str_shuffle($ip);
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if (!is_string($op) || strlen($op) != $len_ip) {
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echo "TEST FAILED\n";
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}
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// Combination already hit ?
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if (empty($a[$op])) {
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// No first time init
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$a[$op] = 0;
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}
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// Increment count for this combination
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$a[$op]++;
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}
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$combinations = count($a);
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if ($combinations != 24) {
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echo "TEST FAILED.. Only $combinations out of a possible 24 combinations used\n";
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} else {
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echo "TEST PASSED\n";
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}
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?>
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===DONE===
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--EXPECTF--
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*** Testing str_shuffle() : basic functionality ***
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string(47) "%s"
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TEST PASSED
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===DONE===
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