public function testIsSupportedAndCache()
{
Hash::clearLastAlgorithmCache();
$this->assertAttributeEquals(null, 'lastAlgorithmSupported', 'Zend\\Crypt\\Hash');
$algorithm = 'sha512';
// cache value must be exactly equal to the original input
$this->assertTrue(Hash::isSupported($algorithm));
$this->assertAttributeEquals($algorithm, 'lastAlgorithmSupported', 'Zend\\Crypt\\Hash');
$this->assertAttributeNotEquals('sHa512', 'lastAlgorithmSupported', 'Zend\\Crypt\\Hash');
// cache value must be exactly equal to the first input (cache hit)
Hash::isSupported('sha512');
$this->assertAttributeEquals($algorithm, 'lastAlgorithmSupported', 'Zend\\Crypt\\Hash');
// cache changes with a new algorithm
$this->assertTrue(Hash::isSupported('sha1'));
$this->assertAttributeEquals('sha1', 'lastAlgorithmSupported', 'Zend\\Crypt\\Hash');
// cache don't change due wrong algorithm
$this->assertFalse(Hash::isSupported('wrong'));
$this->assertAttributeEquals('sha1', 'lastAlgorithmSupported', 'Zend\\Crypt\\Hash');
Hash::clearLastAlgorithmCache();
$this->assertAttributeEquals(null, 'lastAlgorithmSupported', 'Zend\\Crypt\\Hash');
}
/**
* Set the hash algorithm for HMAC authentication
*
* @param string $hash
* @return BlockCipher
* @throws Exception\InvalidArgumentException
*/
public function setHashAlgorithm($hash)
{
if (!Hash::isSupported($hash)) {
throw new Exception\InvalidArgumentException("The specified hash algorithm '{$hash}' is not supported by Zend\\Crypt\\Hash");
}
$this->hash = $hash;
return $this;
}