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<?php
class RandomIntTest extends PHPUnit\Framework\TestCase
{
const NO_BASEDIR = 'There is no suitable CSPRNG installed on your system';
public function testFuncExists()
{
$this->assertTrue(function_exists('random_int'));
}
public function testOutput()
{
try {
$half_neg_max = (~PHP_INT_MAX / 2);
$integers = array(
random_int(0, 1000),
random_int(1001,2000),
random_int(-100, -10),
random_int(-1000, 1000),
random_int(~PHP_INT_MAX, PHP_INT_MAX),
random_int("0", "1"),
random_int(0.11111, 0.99999),
random_int($half_neg_max, PHP_INT_MAX),
random_int(0.0, 255.0),
random_int(-4.5, -4.5),
random_int("1337e3","1337e3")
);
$this->assertFalse($integers[0] === $integers[1]);
$this->assertTrue($integers[0] >= 0 && $integers[0] <= 1000);
$this->assertTrue($integers[1] >= 1001 && $integers[1] <= 2000);
$this->assertTrue($integers[2] >= -100 && $integers[2] <= -10);
$this->assertTrue($integers[3] >= -1000 && $integers[3] <= 1000);
$this->assertTrue($integers[4] >= ~PHP_INT_MAX && $integers[4] <= PHP_INT_MAX);
$this->assertTrue($integers[5] >= 0 && $integers[5] <= 1);
$this->assertTrue($integers[6] === 0);
$this->assertTrue($integers[7] >= $half_neg_max && $integers[7] <= PHP_INT_MAX);
$this->assertTrue($integers[8] >= 0 && $integers[8] <= 255);
$this->assertTrue($integers[9] === -4);
$this->assertTrue($integers[10] === 1337000);
} catch (Exception $ex) {
$this->assertEquals(
$ex->getMessage(),
self::NO_BASEDIR
);
return;
}
try {
$h = random_int("2147483648", "2147483647");
$i = random_int("9223372036854775808", "9223372036854775807");
$this->assertFalse(is_int($i));
$h = random_int("-2147483648", "2147483647");
$i = random_int("-9223372036854775808", "9223372036854775807");
$this->fail("One of these options should have thrown an exception.");
} catch (Error $ex) {
$this->assertTrue($ex instanceof Error);
} catch (Exception $ex) {
$this->assertTrue($ex instanceof Exception);
}
}
public function testRandomRange()
{
try {
$try = 64;
$maxLen = strlen(~PHP_INT_MAX);
do {
$rand = random_int(~PHP_INT_MAX, PHP_INT_MAX);
} while (strlen($rand) !== $maxLen && $try--);
$this->assertGreaterThan(0, $try);
} catch (Exception $ex) {
$this->assertEquals(
$ex->getMessage(),
self::NO_BASEDIR
);
return;
}
}
}
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