<?php
class RandomBytesTest extends PHPUnit_Framework_TestCase
{
const NO_BASEDIR = 'There is no suitable CSPRNG installed on your system';
public function testFuncExists()
{
$this->assertTrue(function_exists('random_bytes'));
}
public function testInvalidParams()
{
try {
$bytes = random_bytes('good morning');
$this->fail("random_bytes() should accept only an integer");
} catch (TypeError $ex) {
$this->assertTrue(true);
} catch (Error $ex) {
$this->assertTrue(true);
} catch (Exception $ex) {
$this->assertTrue(true);
if ($ex->getMessage() === self::NO_BASEDIR) {
return;
}
}
try {
$bytes = random_bytes(array(12));
$this->fail("random_bytes() should accept only an integer");
} catch (TypeError $ex) {
$this->assertTrue(true);
} catch (Error $ex) {
$this->assertTrue(true);
} catch (Exception $ex) {
$this->assertTrue(true);
}
// This should succeed:
try {
$bytes = random_bytes('123456');
} catch (Exception $ex) {
$this->assertEquals(
$ex->getMessage(),
self::NO_BASEDIR
);
}
}
public function testOutput()
{
try {
$bytes = array(
random_bytes(12),
random_bytes(64),
random_bytes(64),
random_bytes(1.5)
);
} catch (Exception $ex) {
$this->assertEquals(
$ex->getMessage(),
self::NO_BASEDIR
);
return;
}
$this->assertTrue(
strlen(bin2hex($bytes[0])) === 24
);
$this->assertTrue(
strlen(bin2hex($bytes[3])) === 2
);
// This should never generate identical byte strings
$this->assertFalse(
$bytes[1] === $bytes[2]
);
try {
$x = random_bytes(~PHP_INT_MAX - 1000000000);
$this->fail("Integer overflow (~PHP_INT_MAX - 1000000000).");
} catch (TypeError $ex) {
$this->assertTrue(true);
} catch (Error $ex) {
$this->assertTrue(true);
} catch (Exception $ex) {
$this->assertTrue(true);
}
try {
$x = random_bytes(PHP_INT_MAX + 1000000000);
$this->fail("Requesting too many bytes should fail.");
} catch (TypeError $ex) {
$this->assertTrue(true);
} catch (Error $ex) {
$this->assertTrue(true);
} catch (Exception $ex) {
$this->assertTrue(true);
}
}
}
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