--TEST--
Test array_rand() function : usage variation - invalid values for 'req_num' parameter
--FILE--
<?php
/*
* Test behaviour of array_rand() function when associative array and
* various invalid values are passed to the 'input' and 'req_num'
* parameters respectively
*/

echo "*** Testing array_rand() : with invalid values for 'req_num' ***\n";

// initialise associative arrays
$input = array(
  1 => 'one',
  0xabc => 2748, 0x12f => '303', 0xff => "255",
  0123 => 83, 012 => 10, 010 => "8"
);

// Testing array_rand() function with various invalid 'req_num' values
// with valid num_req values
echo"\n-- With default num_req value --\n";
var_dump( array_rand($input) );  // with default $num_req value
echo"\n-- With num_req = 1 --\n";
var_dump( array_rand($input, 1) );  // with valid $num_req value

// with invalid num_req value
echo"\n-- With num_req = 0 --\n";
try {
    var_dump( array_rand($input, 0) );  // with $num_req=0
} catch (\ValueError $e) {
    echo $e->getMessage() . "\n";
}

echo"\n-- With num_req = -1 --\n";
try {
    var_dump( array_rand($input, -1) );  // with $num_req=-1
} catch (\ValueError $e) {
    echo $e->getMessage() . "\n";
}

echo"\n-- With num_req = -2 --\n";
try {
    var_dump( array_rand($input, -2) );  // with $num_req=-2
} catch (\ValueError $e) {
    echo $e->getMessage() . "\n";
}

echo"\n-- With num_req more than number of members in 'input' array --\n";
try {
    var_dump( array_rand($input, 13) );  // with $num_req=13
} catch (\ValueError $e) {
    echo $e->getMessage() . "\n";
}

?>
--EXPECTF--
*** Testing array_rand() : with invalid values for 'req_num' ***

-- With default num_req value --
int(%d)

-- With num_req = 1 --
int(%d)

-- With num_req = 0 --
array_rand(): Argument #2 ($num) must be between 1 and the number of elements in argument #1 ($array)

-- With num_req = -1 --
array_rand(): Argument #2 ($num) must be between 1 and the number of elements in argument #1 ($array)

-- With num_req = -2 --
array_rand(): Argument #2 ($num) must be between 1 and the number of elements in argument #1 ($array)

-- With num_req more than number of members in 'input' array --
array_rand(): Argument #2 ($num) must be between 1 and the number of elements in argument #1 ($array)